camptix.php

<?php
/*
 * Plugin Name: CampTix Event Ticketing
 * Plugin URI:  http://wordcamp.org
 * Description: Simple and flexible event ticketing for WordPress.
 * Version:     1.6.0
 * Text Domain: camptix
 * Domain Path: /languages/
 *
 * Author:      Automattic
 * Author URI:  http://wordcamp.org
 * License:     GPLv2
 */

class CampTix_Plugin {
	protected $options;
	protected $notices;
	protected $errors;
	protected $infos;
	protected $admin_notices;

	protected $tmp;

	public $debug;
	public $beta_features_enabled;
	public $version     = 20140325;
	public $css_version = 20150311;
	public $js_version  = 20161128;
	public $caps;

	public $addons = array();
	public $addons_loaded = array();

	protected $tickets;
	protected $tickets_selected;
	protected $tickets_selected_count;
	protected $form_data;
	protected $reservation;
	protected $coupon;
	protected $error_flags;
	protected $error_data;
	protected $did_template_redirect;
	protected $did_checkout;
	protected $shortcode_contents;

	// Allow others to use this.
	public $filter_post_meta = false;

	const PAYMENT_STATUS_CANCELLED = 1;
	const PAYMENT_STATUS_COMPLETED = 2;
	const PAYMENT_STATUS_PENDING = 3;
	const PAYMENT_STATUS_FAILED = 4;
	const PAYMENT_STATUS_TIMEOUT = 5;
	const PAYMENT_STATUS_REFUNDED = 6;
	const PAYMENT_STATUS_REFUND_FAILED = 7;

	/**
	 * Fired as soon as this file is loaded, don't do anything
	 * but filters and actions here.
	 */
	function __construct() {
		do_action( 'camptix_pre_init' );

		// Debug
		// $this->js_version = rand( 1, 100000 );

		require( dirname( __FILE__ ) . '/inc/class-camptix-addon.php' );
		require( dirname( __FILE__ ) . '/inc/class-camptix-payment-method.php' );

		if ( defined( 'WP_CLI' ) && WP_CLI ) {
			require_once( dirname( __FILE__ ) . '/inc/class-wp-cli-commands.php' );
		}

		// Addons
		add_action( 'init', array( $this, 'load_addons' ), 8 );
		add_action( 'camptix_load_addons', array( $this, 'load_default_addons' ) );

		add_action( 'init', array( $this, 'init' ) );
		add_action( 'init', array( $this, 'schedule_events' ), 9 );
		add_action( 'shutdown', array( $this, 'shutdown' ) );

		// Load a text domain
		add_action( 'plugins_loaded', array( $this, 'load_textdomain' ) );
	}

	/**
	 * Fired during init, doh!
	 */
	function init() {
		$this->options = $this->get_options();
		$this->debug = (bool) apply_filters( 'camptix_debug', false );
		$this->beta_features_enabled = (bool) apply_filters( 'camptix_beta_features_enabled', false );
		$this->tmp = array();

		// Capability mapping.
		$this->caps = apply_filters( 'camptix_capabilities', array(
			'manage_tickets'   => 'manage_options',
			'manage_attendees' => 'manage_options',
			'manage_coupons'   => 'manage_options',
			'manage_tools'     => 'manage_options',
			'manage_options'   => 'manage_options',
			'delete_attendees' => 'manage_options',
			'refund_all'       => 'manage_options',
		) );

		// Explicitly disable all beta features if beta features is off.
		if ( ! $this->beta_features_enabled )
			foreach ( $this->get_beta_features() as $beta_feature )
				$this->options[$beta_feature] = false;

		// The following three are just different kinds (colors) of user feedback.
		// Don't use directly, instead use $this->notice / error / info methods.
		$this->infos = array();
		$this->notices = array();
		$this->errors = array();

		// Our main shortcode
		add_shortcode( 'camptix', array( $this, 'shortcode_callback' ) );

		// Hack to avoid object caching, see revenue report.
		add_filter( 'get_post_metadata', array( $this, 'get_post_metadata' ), 10, 4 );

		// Stuff that might need to redirect, thus not in [camptix] shortcode.
		add_action( 'template_redirect', array( $this, 'template_redirect' ), 9 ); // earlier than the others.

		add_action( 'admin_init', array( $this, 'admin_init' ) );
		add_action( 'admin_menu', array( $this, 'admin_menu' ) );
		add_action( 'admin_head', array( $this, 'admin_menu_fix' ) );
		add_action( 'add_meta_boxes', array( $this, 'add_meta_boxes' ) );

		// Handle meta for our post types.
		add_action( 'save_post', array( $this, 'save_ticket_post' ) );
		add_action( 'save_post', array( $this, 'save_attendee_post' ) );
		add_action( 'save_post', array( $this, 'save_coupon_post' ) );

		// Handle query extras for attendees, tickets, etc.
		add_action( 'pre_get_posts', array( $this, 'pre_get_posts' ) );

		// Used to update stats
		add_action( 'transition_post_status', array( $this, 'transition_post_status' ), 10, 3 );
		add_action( 'wp_ajax_camptix_client_stats', array( $this, 'process_client_stats' ) );
		add_action( 'wp_ajax_nopriv_camptix_client_stats', array( $this, 'process_client_stats' ) );

		// Notices, errors and infos, all in one.
		add_action( 'camptix_notices', array( $this, 'do_notices' ) );
		add_action( 'admin_notices', array( $this, 'do_admin_notices' ) );

		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'admin_enqueue_scripts' ) );

		// Sort of admin_init but on the Tickets > Tools page only.
		add_action( 'load-tix_ticket_page_camptix_tools', array( $this, 'summarize_extra_fields' ) );
		add_action( 'load-tix_ticket_page_camptix_tools', array( $this, 'summarize_admin_init' ) ); // marked as admin init but not really
		add_action( 'load-tix_ticket_page_camptix_tools', array( $this, 'export_admin_init' ) ); // same here, but close
		add_action( 'load-tix_ticket_page_camptix_tools', array( $this, 'menu_tools_refund_admin_init' ) );

		add_action( 'camptix_question_fields_init', array( $this, 'question_fields_init' ) );
		add_action( 'camptix_init_notify_shortcodes', array( $this, 'init_notify_shortcodes' ), 9 );
		add_action( 'camptix_init_email_templates_shortcodes', array( $this, 'init_email_templates_shortcodes' ), 9 );

		add_filter( 'dashboard_glance_items', array( $this, 'dashboard_glance_items' ) );

		// Other things required during init.
		$this->custom_columns();
		$this->register_post_types();
		$this->register_post_statuses();

		do_action( 'camptix_init' );
	}

	/**
	 * Scheduled events, mainly around e-mail jobs, runs during file load.
	 */
	function schedule_events() {
		add_filter( 'cron_schedules', array( $this, 'cron_schedules' ) );

		add_action( 'tix_scheduled_every_ten_minutes', array( $this, 'send_emails_batch' ) );
		add_action( 'tix_scheduled_every_ten_minutes', array( $this, 'process_refund_all' ) );

		add_action( 'tix_scheduled_daily', array( $this, 'review_timeout_payments' ) );

		if ( ! wp_next_scheduled( 'tix_scheduled_every_ten_minutes' ) )
			wp_schedule_event( time(), '10-mins', 'tix_scheduled_every_ten_minutes' );

		// wp_clear_scheduled_hook( 'tix_scheduled_hourly' );
		if ( ! wp_next_scheduled( 'tix_scheduled_daily' ) )
			wp_schedule_event( time(), 'daily', 'tix_scheduled_daily' );
	}

	/**
	 * Load Textdomain
	 */
	function load_textdomain() {
		load_plugin_textdomain( 'camptix', false, plugin_basename( dirname( __FILE__ ) ) . '/languages/' );
	}

	/**
	 * Filters cron_schedules
	 */
	function cron_schedules( $schedules ) {
		$schedules['10-mins'] = array(
			'interval' => 60 * 10,
			'display' => __( 'Once every 10 minutes', 'camptix' ),
		);
		return $schedules;
	}

	/**
	 * Runs during the tix_email_schedule scheduled event, processes e-mail jobs.
	 */
	function send_emails_batch() {
		global $wpdb, $shortcode_tags;

		// Sometimes Cron can run before $this->init()
		if ( ! did_action( 'camptix_init' ) )
			$this->init();

		// Grab only one e-mail job at a time.
		$email = get_posts( array(
			'post_type' => 'tix_email',
			'post_status' => 'pending',
			'order' => 'ASC',
			'posts_per_page' => 1,
			'cache_results' => false,
		) );

		if ( ! $email )
			return;

		$email = array_shift( $email );
		$this->log( 'Executing e-mail job.', $email->ID, null, 'notify' );
		$max = apply_filters( 'camptix_notify_recipients_batch_count', 200 ); // plugins can change this.

		$recipients_data = $wpdb->get_results( $wpdb->prepare( "SELECT SQL_CALC_FOUND_ROWS meta_id, meta_value FROM $wpdb->postmeta WHERE $wpdb->postmeta.post_id = %d AND $wpdb->postmeta.meta_key = %s LIMIT %d;", $email->ID, 'tix_email_recipient_id', $max ) );
		$total = $wpdb->get_var( "SELECT FOUND_ROWS();" );
		$processed = 0;

		$recipients = array();
		foreach ( $recipients_data as $recipient )
			$recipients[$recipient->meta_value] = $recipient->meta_id;

		unset( $recipients_data, $recipient );

		if ( $recipients && is_array( $recipients ) && count( $recipients ) > 0 ) {

			// Remove all shortcodes before sending the e-mails, but bring them back later.
			$this->removed_shortcodes = $shortcode_tags;
			remove_all_shortcodes();

			do_action( 'camptix_init_notify_shortcodes' );

			$paged = 1;
			while ( $attendees = get_posts( array(
					'post_type' => 'tix_attendee',
					'post_status' => 'any',
					'post__in' => array_keys( $recipients ),
					'fields' => 'ids', // ! no post objects
					'orderby' => 'ID',
					'order' => 'ASC',
					'paged' => $paged++,
					'posts_per_page' => min( 100, $max ),
					'cache_results' => false, // no caching
			) ) ) {

				// Prepare post metadata, disable object cache.
				$this->filter_post_meta = $this->prepare_metadata_for( $attendees );

				foreach ( $attendees as $attendee_id ) {
					$attendee_email = get_post_meta( $attendee_id, 'tix_email', true );
					$count = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE post_id = %d AND meta_id = %d LIMIT 1;", $email->ID, $recipients[$attendee_id] ) );

					if ( $count > 0 ) {

						$data = array(
							'email_id' => $email->ID,
							'email_title' => $email->post_title,
							'attendee_id' => $attendee_id,
							'attendee_email' => $attendee_email,
						);

						if ( ! is_email( $attendee_email ) ) {
							$this->log( sprintf( '%s is not a valid e-mail, removing from queue.', $attendee_email ), $email->ID, $data, 'notify' );
						} else {

							$this->tmp( 'attendee_id', $attendee_id );
							$email_content = do_shortcode( $email->post_content );
							$email_title = do_shortcode( $email->post_title );

							// Decode entities since the e-mails sent is a plain/text, not html.
							$email_title = html_entity_decode( $email_title );
							$email_content = html_entity_decode( $email_content );

							// Attempt to send an e-mail.
							if ( $this->wp_mail( $attendee_email, $email_title, $email_content ) ) {
								$this->log( sprintf( 'E-mail successfully sent to %s', $attendee_email ), $email->ID, $data, 'notify' );
							} else {
								$this->log( sprintf( 'Could not send e-mail to %s, removing from queue.', $attendee_email ), $email->ID, $data, 'notify' );
							}
						}

						$processed++;
					}
				}

				// Clean post meta cache.
				$this->filter_post_meta = false;
				$this->tmp( 'attendee_id', false );
			}

			// Bring back the original shortcodes.
			$shortcode_tags = $this->removed_shortcodes;
			$this->removed_shortcodes = array();
		}

		//update_post_meta( $email->ID, 'tix_email_recipients', $recipients );
		$this->log( sprintf( 'Processed %d recipients. %d recipients remaining.', $processed, $total - $processed ), $email->ID, null, 'notify' );

		// Let's see if there's anything left.
		if ( $total - $processed < 1 ) {

			// Published tix_email posts means completed jobs.
			wp_update_post( array(
				'ID' => $email->ID,
				'post_status' => 'publish',
			) );

			$this->log( 'Email job complete and published.', $email->ID, null, 'notify' );
		}
	}

	function init_email_templates_shortcodes() {
		// Use the same ones as the notify shortcode
		add_shortcode( 'first_name', array( $this, 'notify_shortcode_first_name' ) );
		add_shortcode( 'last_name', array( $this, 'notify_shortcode_last_name' ) );
		add_shortcode( 'email', array( $this, 'notify_shortcode_email' ) );

		add_shortcode( 'event_name', array( $this, 'email_template_shortcode_event_name' ) );
		add_shortcode( 'ticket_url', array( $this, 'email_template_shortcode_ticket_url' ) );
		add_shortcode( 'receipt', array( $this, 'email_template_shortcode_receipt' ) );
		add_shortcode( 'buyer_full_name', array( $this, 'email_template_shortcode_buyer_full_name' ) );
	}

	/**
	 * Returns the event name.
	 */
	function email_template_shortcode_event_name( $atts ) {
		return $this->options['event_name'];
	}

	/**
	 * Returns the ticket access/edit URL.
	 *
	 * @uses $this->tmp() to retrieve the ticket url
	 */
	function email_template_shortcode_ticket_url( $atts ) {
		return $this->tmp( 'ticket_url' );
	}

	/**
	 * Returns the e-mail receipt content.
	 *
	 * @uses $this->tmp() to retrieve receipt content.
	 */
	function email_template_shortcode_receipt( $atts ) {
		return $this->tmp( 'receipt' );
	}

	function email_template_shortcode_buyer_full_name( $atts ) {
		return $this->tmp( 'buyer_full_name' );
	}

	/**
	 * Creates some shortcodes
	 * to be used with CampTix Notify.
	 */
	function init_notify_shortcodes() {
		add_shortcode( 'first_name', array( $this, 'notify_shortcode_first_name' ) );
		add_shortcode( 'last_name', array( $this, 'notify_shortcode_last_name' ) );
		add_shortcode( 'email', array( $this, 'notify_shortcode_email' ) );
		add_shortcode( 'ticket_url', array( $this, 'notify_shortcode_ticket_url' ) );
	}

	/**
	 * Notify shortcode: returns the attendee first name.
	 */
	function notify_shortcode_first_name( $atts ) {
		if ( $this->tmp( 'attendee_id' ) )
			return get_post_meta( $this->tmp( 'attendee_id' ), 'tix_first_name', true );
	}

	/**
	 * Notify shortcode: returns the attendee last name.
	 */
	function notify_shortcode_last_name( $atts ) {
		if ( $this->tmp( 'attendee_id' ) )
			return get_post_meta( $this->tmp( 'attendee_id' ), 'tix_last_name', true );
	}

	/**
	 * Notify shortcode: returns the attendee e-mail address.
	 */
	function notify_shortcode_email( $atts ) {
		if ( $this->tmp( 'attendee_id' ) )
			return get_post_meta( $this->tmp( 'attendee_id' ), 'tix_email', true );
	}

	/**
	 * Notify shortcode: returns the attendee edit url
	 */
	function notify_shortcode_ticket_url( $atts ) {
		if ( ! $this->tmp( 'attendee_id' ) )
			return;

		$edit_token = get_post_meta( $this->tmp( 'attendee_id' ), 'tix_edit_token', true );
		return $this->get_edit_attendee_link( $this->tmp( 'attendee_id' ), $edit_token );
	}

	/**
	 * This is taken out here to illustrate how a third-party plugin or
	 * theme can hook into CampTix to add their own Summarize fields. This method
	 * grabs all the available tickets questions and adds them to Summarize.
	 */
	function summarize_extra_fields() {
		if ( 'summarize' != $this->get_tools_section() )
			return;

		// Adds all questions to Summarize and register the callback that counts all the things.
		add_filter( 'camptix_summary_fields', array( $this, 'camptix_summary_fields_extras' ) );
		add_action( 'camptix_summarize_by_field', array( $this, 'camptix_summarize_by_field_extras' ), 10, 3 );
	}

	/**
	 * Filters camptix_summary_fields to add user-defined
	 * questions to the Summarize list.
	 */
	function camptix_summary_fields_extras( $fields ) {
		$questions = $this->get_all_questions();
		foreach ( $questions as $question )
			$fields[ 'tix_q_' . $question->ID ] = apply_filters( 'the_title', $question->post_title );

		return $fields;
	}

	/**
	 * Runs during camptix_summarize_by_field, fetches answers from
	 * attendee objects and increments summary.
	 */
	function camptix_summarize_by_field_extras( $summarize_by, &$summary, $attendee ) {
		if ( 'tix_q_' != substr( $summarize_by, 0, 6 ) )
			return;

		$key = substr( $summarize_by, 6 );
		$answers = (array) get_post_meta( $attendee->ID, 'tix_questions', true );

		if ( isset( $answers[ $key ] ) && ! empty( $answers[ $key ] ) )
			$this->increment_summary( $summary, $answers[ $key ] );
		else
			$this->increment_summary( $summary, __( 'None', 'camptix' ) );
	}

	/**
	 * Get a CSS file, @todo make it removable through an option.
	 */
	function enqueue_scripts() {

		wp_register_style( 'camptix', plugins_url( 'camptix.css', __FILE__ ), array(), $this->css_version );
		wp_register_script( 'camptix', plugins_url( 'camptix.js', __FILE__ ), array( 'jquery' ), $this->js_version );

		wp_localize_script( 'camptix', 'camptix_l10n', array(
			'enterEmail' => __( 'Please enter the e-mail addresses in the forms above.', 'camptix' ),
			'ajaxURL'    => admin_url( 'admin-ajax.php' ),
		) );

		// Let's play by the rules and print this in the <head> section.
		wp_enqueue_style( 'camptix' );
	}

	function admin_enqueue_scripts() {
		global $wp_query;

		if ( ! $wp_query->query_vars ) { // only on singular admin pages
			if ( 'tix_ticket' == get_post_type() || 'tix_coupon' == get_post_type() ) {
			}
		}

		// Let's see whether to include admin.css and admin.js
		if ( is_admin() ) {
			$screen = get_current_screen();
			$post_types = array( 'tix_ticket', 'tix_coupon', 'tix_email', 'tix_attendee' );
			$pages = array( 'camptix_options', 'camptix_tools' );
			$screen_ids = array( 'dashboard' );
			if (
				( in_array( get_post_type(), $post_types ) ) ||
				( in_array( $screen->id, $screen_ids ) ) ||
				( isset( $_REQUEST['post_type'] ) && in_array( $_REQUEST['post_type'], $post_types ) ) ||
				( isset( $_REQUEST['page'] ) && in_array( $_REQUEST['page'], $pages ) )
			) {
				wp_enqueue_script( 'jquery-ui-datepicker' );
				wp_enqueue_style( 'jquery-ui', plugins_url( '/external/jquery-ui.css', __FILE__ ), array(), $this->version );

				wp_enqueue_style( 'camptix-admin', plugins_url( '/admin.css', __FILE__ ), array(), $this->css_version );
				wp_enqueue_script( 'camptix-admin', plugins_url( '/admin.js', __FILE__ ), array( 'jquery', 'jquery-ui-datepicker', 'backbone' ), $this->js_version );
				wp_dequeue_script( 'autosave' );
			}
		}

		$screen = get_current_screen();
		if ( 'tix_ticket_page_camptix_options' == $screen->id ) {
			wp_enqueue_script( 'jquery-ui-datepicker' );
			wp_enqueue_style( 'jquery-ui', plugins_url( '/external/jquery-ui.css', __FILE__ ), array(), $this->version );
		}
	}

	/**
	 * Filters column fields for our new post types, adds extra columns
	 * and registers callback actions to render column callback.
	 */
	function custom_columns() {
		// Ticket columns
		add_filter( 'manage_edit-tix_ticket_columns', array( $this, 'manage_columns_ticket_filter' ) );
		add_action( 'manage_tix_ticket_posts_custom_column', array( $this, 'manage_columns_ticket_action' ), 10, 2 );

		// Attendee columns
		add_filter( 'manage_edit-tix_attendee_columns', array( $this, 'manage_columns_attendee_filter' ) );
		add_filter( 'manage_edit-tix_attendee_sortable_columns', array( $this, 'manage_columns_attendee_sortable' ) );
		add_action( 'manage_tix_attendee_posts_custom_column', array( $this, 'manage_columns_attendee_action' ), 10, 2 );

		// Coupon columns
		add_filter( 'manage_edit-tix_coupon_columns', array( $this, 'manage_columns_coupon_filter' ) );
		add_action( 'manage_tix_coupon_posts_custom_column', array( $this, 'manage_columns_coupon_action' ), 10, 2 );

		// E-mail columns
		add_filter( 'manage_edit-tix_email_columns', array( $this, 'manage_columns_email_filter' ) );
		add_action( 'manage_tix_email_posts_custom_column', array( $this, 'manage_columns_email_action' ), 10, 2 );

		// Maybe hide some columns.
		add_action( 'load-edit.php', array( $this, 'update_hidden_columns' ) );
	}

	/**
	 * Manage columns filter for ticket post type.
	 */
	function manage_columns_ticket_filter( $columns ) {
		$columns['tix_price'] = __( 'Price', 'camptix' );
		$columns['tix_quantity'] = __( 'Quantity', 'camptix' );
		$columns['tix_purchase_count'] = __( 'Purchased', 'camptix' );
		$columns['tix_remaining'] = __( 'Remaining', 'camptix' );
		$columns['tix_availability'] = __( 'Availability', 'camptix' );
		$date = $columns['date'];
		unset( $columns['date'] );
		$columns['date'] = $date;
		return $columns;
	}

	/**
	 * Manage columns action for ticket post type.
	 */
	function manage_columns_ticket_action( $column, $post_id ) {
		switch ( $column ) {
			case 'tix_price':
				echo esc_html( $this->append_currency( get_post_meta( $post_id, 'tix_price', true ) ) );
				break;
			case 'tix_quantity':
				echo intval( get_post_meta( $post_id, 'tix_quantity', true ) );
				break;
			case 'tix_purchase_count':
				$attendees_url = get_admin_url( 0, '/edit.php?post_type=tix_attendee' );
				$attendees_url = add_query_arg( 's', 'tix_ticket_id:' . intval( $post_id ), $attendees_url );
				printf( '<a href="%s">%d</a>', esc_url( $attendees_url ), intval( $this->get_purchased_tickets_count( $post_id ) ) );
				break;
			case 'tix_remaining':
				echo absint( $this->get_remaining_tickets( $post_id ) );

				if ( $this->options['reservations_enabled'] ) {
					$reserved = 0;
					$reservations = $this->get_reservations( $post_id );
					foreach ( $reservations as $reservation_token => $reservation )
						$reserved += $reservation['quantity'] - $this->get_purchased_tickets_count( $post_id, $reservation_token );

					if ( $reserved > 0 )
						printf( ' ' . __( '(%d reserved)', 'camptix' ), absint( $reserved ) );
				}

				break;
			case 'tix_availability':
				$start = get_post_meta( $post_id, 'tix_start', true );
				$end = get_post_meta( $post_id, 'tix_end', true );

				if ( ! $start && ! $end ) {
					echo __( 'Auto', 'camptix' );
				} else {
					// translators: 1: "from" date, 2: "to" date
					printf( __( '%1$s &mdash; %2$s', 'camptix' ), esc_html( $start ), esc_html( $end ) );
				}

				break;
		}
	}

	/**
	 * Manage columns filter for attendee post type.
	 */
	function manage_columns_attendee_filter( $columns ) {
		$columns['tix_email'] = __( 'E-mail', 'camptix' );
		$columns['tix_ticket'] = __( 'Ticket', 'camptix' );
		$columns['tix_coupon'] = __( 'Coupon', 'camptix' );

		if ( $this->options['reservations_enabled'] )
			$columns['tix_reservation'] = __( 'Reservation', 'camptix' );

		$columns['tix_ticket_price'] = __( 'Ticket Price', 'camptix' );
		$columns['tix_order_total'] = __( 'Order Total', 'camptix' );

		$date = $columns['date'];
		unset( $columns['date'] );

		$columns['date'] = $date;
		return $columns;
	}

	/**
	 * Sortable columns for the Attendees screen.
	 *
	 * @param array $columns An array of sortable columns, key => orderby value.
	 *
	 * @return array The result with additional sortable columns.
	 */
	public function manage_columns_attendee_sortable( $columns ) {
		$columns['tix_ticket'] = 'tix_ticket_id';
		return $columns;
	}

	/**
	 * Manage columns action for attendee post type.
	 */
	function manage_columns_attendee_action( $column, $post_id ) {
		switch ( $column ) {
			case 'tix_ticket':
				$ticket_id = intval( get_post_meta( $post_id, 'tix_ticket_id', true ) );
				$ticket = get_post( $ticket_id );
				if ( $ticket ) {
					$attendees_url = get_admin_url( 0, '/edit.php?post_type=tix_attendee' );
					$attendees_url = add_query_arg( 's', 'tix_ticket_id:' . intval( $ticket->ID ), $attendees_url );

					// Don't drop the post_status query variable.
					if ( get_query_var('post_status') ) {
						$attendees_url = add_query_arg( 'post_status', get_query_var('post_status'), $attendees_url );
					}

					printf( '<a href="%s">%s</a>', esc_url( $attendees_url ), esc_html( $ticket->post_title ) );
				}
				break;
			case 'tix_email':
				echo esc_html( get_post_meta( $post_id, 'tix_email', true ) );
				break;
			case 'tix_coupon':
				$coupon_id = get_post_meta( $post_id, 'tix_coupon_id', true );
				if ( $coupon_id ) {
					$coupon = get_post_meta( $post_id, 'tix_coupon', true );
					$attendees_url = get_admin_url( 0, '/edit.php?post_type=tix_attendee' );
					$attendees_url = add_query_arg( 's', 'tix_coupon_id:' . intval( $coupon_id ), $attendees_url );
					printf( '<a href="%s">%s</a>', esc_url( $attendees_url ), esc_html( $coupon ) );
				}
				break;
			case 'tix_reservation':
				$reservation_id = get_post_meta( $post_id, 'tix_reservation_id', true );
				echo esc_html( $reservation_id );
				break;
			case 'tix_order_total':
				$order_total = (float) get_post_meta( $post_id, 'tix_order_total', true );
				echo esc_html( $this->append_currency( $order_total ) );
				break;
			case 'tix_ticket_price':
				$ticket_price = (float) get_post_meta( $post_id, 'tix_ticket_price', true );
				echo esc_html( $this->append_currency( $ticket_price ) );
				break;
		}
	}

	/**
	 * Manage columns filter for coupon post type.
	 */
	function manage_columns_coupon_filter( $columns ) {
		$columns['tix_quantity'] = __( 'Quantity', 'camptix' );
		$columns['tix_used'] = __( 'Used', 'camptix' );
		$columns['tix_remaining'] = __( 'Remaining', 'camptix' );
		$columns['tix_discount'] = __( 'Discount', 'camptix' );
		$columns['tix_availability'] = __( 'Availability', 'camptix' );
		$columns['tix_tickets'] = __( 'Tickets', 'camptix' );

		$date = $columns['date'];
		unset( $columns['date'] );
		$columns['date'] = $date;
		return $columns;
	}

	/**
	 * Manage columns action for coupon post type.
	 */
	function manage_columns_coupon_action( $column, $post_id ) {
		switch ( $column ) {
			case 'tix_quantity':
				echo intval( get_post_meta( $post_id, 'tix_coupon_quantity', true ) );
				break;
			case 'tix_used':
				$attendees_url = get_admin_url( 0, '/edit.php?post_type=tix_attendee' );
				$attendees_url = add_query_arg( 's', 'tix_coupon_id:' . intval( $post_id ), $attendees_url );
				printf( '<a href="%s">%d</a>', esc_url( $attendees_url ), absint( $this->get_used_coupons_count( $post_id ) ) );
				break;
			case 'tix_remaining':
				echo (int) $this->get_remaining_coupons( $post_id );
				break;
			case 'tix_discount':
				$discount_price = (float) get_post_meta( $post_id, 'tix_discount_price', true );
				$discount_percent = (int) get_post_meta( $post_id, 'tix_discount_percent', true );
				if ( $discount_price > 0 ) {
					echo esc_html( $this->append_currency( $discount_price ) );
				} elseif ( $discount_percent > 0 ) {
					echo esc_html( $discount_percent . '%' );
				}
				break;
			case 'tix_tickets':
				$tickets = array();
				$applies_to = get_post_meta( $post_id, 'tix_applies_to' );
				foreach ( $applies_to as $ticket_id )
					if ( $this->is_ticket_valid_for_display( $ticket_id ) )
						edit_post_link( esc_html( $this->get_ticket_title( $ticket_id ) ), '', '<br />', $ticket_id );
				break;
			case 'tix_availability':
				$start = get_post_meta( $post_id, 'tix_coupon_start', true );
				$end = get_post_meta( $post_id, 'tix_coupon_end', true );

				if ( ! $start && ! $end ) {
					echo __( 'Auto', 'camptix' );
				} else {
					// translators: 1: "from" date, 2: "to" date
					printf( __( '%1$s &mdash; %2$s', 'camptix' ), esc_html( $start ), esc_html( $end ) );
				}

				break;
		}
	}

	/**
	 * Manage columns filter for email post type.
	 */
	function manage_columns_email_filter( $columns ) {
		$columns['tix_sent'] = __( 'Sent', 'camptix' );
		$columns['tix_remaining'] = __( 'Remaining', 'camptix' );
		$columns['tix_total'] = __( 'Total', 'camptix' );
		$date = $columns['date'];
		unset( $columns['date'] );
		$columns['date'] = $date;
		return $columns;
	}

	/**
	 * Manage columns action for email post type.
	 */
	function manage_columns_email_action( $column, $post_id ) {
		switch ( $column ) {
			case 'tix_sent':
				$recipients_backup = get_post_meta( $post_id, 'tix_email_recipients_backup', true );
				$recipients_remaining = (array) get_post_meta( $post_id, 'tix_email_recipient_id' );
				echo count( $recipients_backup ) - count( $recipients_remaining );
				break;
			case 'tix_remaining':
				$recipients_remaining = (array) get_post_meta( $post_id, 'tix_email_recipient_id' );
				echo count( $recipients_remaining );
				break;
			case 'tix_total':
				$recipients_backup = get_post_meta( $post_id, 'tix_email_recipients_backup', true );
				echo count( $recipients_backup );
				break;
		}
	}

	/**
	 * Hooked to load-edit.php, adds user options for hidden columns if absent.
	 */
	function update_hidden_columns() {
		if ( ! empty( $_REQUEST['post_type' ] ) && ! in_array( $_REQUEST['post_type'], array( 'tix_attendee', 'tix_ticket' ) ) )
			return;

		// If first time editing, disable advanced items by default.
		if ( false === $this->get_user_option( 'manageedit-tix_attendeecolumnshidden' ) ) {
			$this->update_user_option( get_current_user_id(), 'manageedit-tix_attendeecolumnshidden', array(
				'tix_order_total',
				'tix_ticket_price',
				'tix_reservation',
				'tix_coupon',
			), true );
		}

		if ( false === $this->get_user_option( 'manageedit-tix_ticketcolumnshidden' ) ) {
			$this->update_user_option( get_current_user_id(), 'manageedit-tix_ticketcolumnshidden', array(
				'tix_purchase_count',
				'tix_reserved',
			), true );
		}
	}

	/**
	 * Support for custom sorting and other campthings.
	 *
	 * @param object $query A WP_Query object.
	 */
	public function pre_get_posts( $query ) {
		if ( ! $query->is_main_query() )
			return;

		// Allow ordering by the purchased ticket id.
		if ( $query->get('orderby') == 'tix_ticket_id' && $query->get('post_type') == 'tix_attendee' ) {
			$meta_query = array(
				'relation' => 'OR',
				array(
					'key' => 'tix_ticket_id',
					'compare' => 'EXISTS',
				),
				array(
					'key' => 'tix_ticket_id',
					'compare' => 'NOT EXISTS',
				),
			);

			// Merge the meta query if one's already been provided.
			if ( $query->get('meta_query') ) {
				$meta_query = array(
					'relation' => 'AND',
					$query->get('meta_query'),
					$meta_query,
				);
			}

			$query->set( 'meta_query', $meta_query );
		}
	}

	/**
	 * Filterable call to get_user_option
	 */
	function get_user_option( $option_name, $user_id = 0 ) {
		if ( empty( $user_id ) )
			$user_id = get_current_user_id();

		$value = apply_filters( 'camptix_get_user_option', null, $option_name, $user_id );

		if ( is_null( $value ) )
			$value = get_user_option( $option_name, $user_id );

		return $value;
	}

	/**
	 * Filterable call to update_user_option
	 */
	function update_user_option( $user_id, $option_name, $option_value, $global = false ) {
		$value = apply_filters( 'camptix_update_user_option', null, $user_id, $option_name, $option_value, $global );

		if ( is_null( $value ) )
			$value = update_user_option( $user_id, $option_name, $option_value, $global );

		return $value;
	}

	/**
	 * Get all questions. Returns an assoc array where the key is a
	 * sanitized questions (as stored in the database) and the value is
	 * the question array.
	 */
	function get_all_questions() {
		$questions = get_posts( array(
			'post_type' => 'tix_question',
			'post_status' => 'publish',
			'posts_per_page' => 100,
		) );

		return $questions;
	}

	/**
	 * Takes a ticket id and returns a sorted array of questions.
	 *
	 * @param int $ticket_id
	 *
	 * @return array
	 */
	function get_sorted_questions( $ticket_id ) {
		$question_ids = (array) get_post_meta( $ticket_id, 'tix_question_id' );
		$order = (array) get_post_meta( $ticket_id, 'tix_questions_order', true );

		// Make sure we have at least some questions
		if ( empty( $question_ids ) )
			return array();

		$questions = get_posts( array(
			'post_type' => 'tix_question',
			'post_status' => 'publish',
			'posts_per_page' => -1,
			'post__in' => $question_ids,
		) );

		$questions_with_keys = array();

		foreach ( $questions as $question )
			$questions_with_keys[ $question->ID ] = $question;

		$questions = $questions_with_keys;
		unset( $questions_with_keys );

		$questions_sorted = array();
		foreach ( $order as $question_id )
			if ( isset( $questions[ $question_id ] ) )
				$questions_sorted[] = $questions[ $question_id ];

		unset( $questions );

		return $questions_sorted;
	}

	/**
	 * Fired during init, registers our new post types. $supports depends
	 * on $this->debug, which if true, renders things like custom fields.
	 */
	function register_post_types() {
		$supports = array( 'title', 'excerpt' );
		if ( $this->debug && current_user_can( $this->caps['manage_options'] ) )
			$supports[] = 'custom-fields';

		register_post_type( 'tix_ticket', array(
			'labels' => array(
				'name' => __( 'Tickets', 'camptix' ),
				'singular_name' => __( 'Ticket', 'camptix' ),
				'add_new' => __( 'New Ticket', 'camptix' ),
				'add_new_item' => __( 'Add New Ticket', 'camptix' ),
				'edit_item' => __( 'Edit Ticket', 'camptix' ),
				'new_item' => __( 'New Ticket', 'camptix' ),
				'all_items' => __( 'Tickets', 'camptix' ),
				'view_item' => __( 'View Ticket', 'camptix' ),
				'search_items' => __( 'Search Tickets', 'camptix' ),
				'not_found' => __( 'No tickets found', 'camptix' ),
				'not_found_in_trash' => __( 'No tickets found in trash', 'camptix' ),
				'menu_name' => __( 'Tickets', 'camptix' ),
			),
			'public' => false,
			'query_var' => false,
			'publicly_queryable' => false,
			'show_ui' => true,
			'show_in_menu' => true,
			'supports' => $supports,
			'capability_type' => 'tix_ticket',
			'capabilities' => array(
				'publish_posts' => $this->caps['manage_tickets'],
				'edit_posts' => $this->caps['manage_tickets'],
				'edit_others_posts' => $this->caps['manage_tickets'],
				'delete_posts' => $this->caps['manage_tickets'],
				'delete_others_posts' => $this->caps['manage_tickets'],
				'read_private_posts' => $this->caps['manage_tickets'],
				'edit_post' => $this->caps['manage_tickets'],
				'delete_post' => $this->caps['manage_tickets'],
				'read_post' => $this->caps['manage_tickets'],
			),
			'menu_icon' => 'dashicons-tickets',
		) );

		register_post_type( 'tix_question', array(
			'labels' => array(
				'name' => __( 'Questions', 'camptix' ),
				'singular_name' => __( 'Question', 'camptix' ),
				'add_new' => __( 'New Question', 'camptix' ),
				'add_new_item' => __( 'Add New Question', 'camptix' ),
				'edit_item' => __( 'Edit Question', 'camptix' ),
				'new_item' => __( 'New Question', 'camptix' ),
				'all_items' => __( 'Questions', 'camptix' ),
				'view_item' => __( 'View Question', 'camptix' ),
				'search_items' => __( 'Search Questions', 'camptix' ),
				'not_found' => __( 'No questions found', 'camptix' ),
				'not_found_in_trash' => __( 'No questions found in trash', 'camptix' ),
				'menu_name' => __( 'Questions', 'camptix' ),
			),
			'public' => false,
			'query_var' => false,
			'publicly_queryable' => false,
			'show_ui' => ( $this->debug && current_user_can( $this->caps['manage_options'] ) ),
			'show_in_menu' => ( $this->debug && current_user_can( $this->caps['manage_options'] ) ) ? 'edit.php?post_type=tix_ticket' : false,
			'supports' => array( 'title', 'custom-fields' ),
		) );

		$supports = array( 'title' );
		if ( $this->debug && current_user_can( $this->caps['manage_options'] ) ) {
			$supports[] = 'custom-fields';
			$supports[] = 'editor';
		}

		register_post_type( 'tix_attendee', array(
			'labels' => array(
				'name' => __( 'Attendees', 'camptix' ),
				'singular_name' => __( 'Attendee', 'camptix' ),
				'add_new' => __( 'New Attendee', 'camptix' ),
				'add_new_item' => __( 'Add New Attendee', 'camptix' ),
				'edit_item' => __( 'Edit Attendee', 'camptix' ),
				'new_item' => __( 'Add Attendee', 'camptix' ),
				'all_items' => __( 'Attendees', 'camptix' ),
				'view_item' => __( 'View Attendee', 'camptix' ),
				'search_items' => __( 'Search Attendees', 'camptix' ),
				'not_found' => __( 'No attendees found', 'camptix' ),
				'not_found_in_trash' => __( 'No attendees found in trash', 'camptix' ),
				'menu_name' => __( 'Attendees', 'camptix' ),
			),
			'public' => false,
			'query_var' => false,
			'publicly_queryable' => false,
			'show_ui' => true,
			'show_in_menu' => 'edit.php?post_type=tix_ticket',
			'supports' => $supports,
			'capability_type' => 'tix_attendee',
			'capabilities' => array(
				'publish_posts' => $this->caps['manage_attendees'],
				'edit_posts' => $this->caps['manage_attendees'],
				'edit_others_posts' => $this->caps['manage_attendees'],
				'delete_posts' => $this->caps['delete_attendees'],
				'delete_others_posts' => $this->caps['delete_attendees'],
				'read_private_posts' => $this->caps['manage_attendees'],
				'edit_post' => $this->caps['manage_attendees'],
				'delete_post' => $this->caps['delete_attendees'],
				'read_post' => $this->caps['manage_attendees'],
				'create_posts' => 'do_not_allow',
			),
		) );

		$supports = array( 'title' );
		if ( $this->debug && current_user_can( $this->caps['manage_options'] ) )
			$supports[] = 'custom-fields';

		register_post_type( 'tix_coupon', array(
			'labels' => array(
				'name' => __( 'Coupons', 'camptix' ),
				'singular_name' => __( 'Coupon', 'camptix' ),
				'add_new' => __( 'New Coupon', 'camptix' ),
				'add_new_item' => __( 'Add New Coupon', 'camptix' ),
				'edit_item' => __( 'Edit Coupon', 'camptix' ),
				'new_item' => __( 'New Coupon', 'camptix' ),
				'all_items' => __( 'Coupons', 'camptix' ),
				'view_item' => __( 'View Coupon', 'camptix' ),
				'search_items' => __( 'Search Coupons', 'camptix' ),
				'not_found' => __( 'No coupons found', 'camptix' ),
				'not_found_in_trash' => __( 'No coupons found in trash', 'camptix' ),
				'menu_name' => __( 'Coupons', 'camptix' ),
			),
			'public' => false,
			'query_var' => false,
			'publicly_queryable' => false,
			'show_ui' => true,
			'show_in_menu' => 'edit.php?post_type=tix_ticket',
			'supports' => $supports,
			'capability_type' => 'tix_coupon',
			'capabilities' => array(
				'publish_posts' => $this->caps['manage_coupons'],
				'edit_posts' => $this->caps['manage_coupons'],
				'edit_others_posts' => $this->caps['manage_coupons'],
				'delete_posts' => $this->caps['manage_coupons'],
				'delete_others_posts' => $this->caps['manage_coupons'],
				'read_private_posts' => $this->caps['manage_coupons'],
				'edit_post' => $this->caps['manage_coupons'],
				'delete_post' => $this->caps['manage_coupons'],
				'read_post' => $this->caps['manage_coupons'],
			),
		) );

		// tix_email will store e-mail jobs.
		register_post_type( 'tix_email', array(
			'labels' => array(
				'name' => __( 'E-mails', 'camptix' ),
				'singular_name' => __( 'E-mail', 'camptix' ),
				'add_new' => __( 'New E-mail', 'camptix' ),
				'add_new_item' => __( 'Add New E-mail', 'camptix' ),
				'edit_item' => __( 'Edit E-mail', 'camptix' ),
				'new_item' => __( 'New E-mail', 'camptix' ),
				'all_items' => __( 'E-mails', 'camptix' ),
				'view_item' => __( 'View E-mail', 'camptix' ),
				'search_items' => __( 'Search E-mails', 'camptix' ),
				'not_found' => __( 'No e-mails found', 'camptix' ),
				'not_found_in_trash' => __( 'No e-mails found in trash', 'camptix' ),
				'menu_name' => __( 'E-mails (debug)', 'camptix' ),
			),
			'public' => false,
			'query_var' => false,
			'publicly_queryable' => false,
			'show_ui' => ( $this->debug && current_user_can( $this->caps['manage_options'] ) ),
			'show_in_menu' => ( $this->debug && current_user_can( $this->caps['manage_options'] ) ) ? 'edit.php?post_type=tix_ticket' : false,
			'supports' => array( 'title', 'editor', 'custom-fields' ),
		) );
	}

	function register_post_statuses() {
		register_post_status( 'cancel', array(
			'label'                     => _x( 'Cancelled', 'post', 'camptix' ),
			'label_count'               => _nx_noop( 'Cancelled <span class="count">(%s)</span>', 'Cancelled <span class="count">(%s)</span>', 'camptix' ),
			'public' => false,
			'protected' => true,
			'show_in_admin_all_list' => true,
			'show_in_admin_status_list' => true,
		) );

		register_post_status( 'failed', array(
			'label'                     => _x( 'Failed', 'post', 'camptix' ),
			'label_count'               => _nx_noop( 'Failed <span class="count">(%s)</span>', 'Failed <span class="count">(%s)</span>', 'camptix' ),
			'public' => false,
			'protected' => true,
			'show_in_admin_all_list' => true,
			'show_in_admin_status_list' => true,
		) );

		register_post_status( 'timeout', array(
			'label'                     => _x( 'Timeout', 'post', 'camptix' ),
			'label_count'               => _nx_noop( 'Timeout <span class="count">(%s)</span>', 'Timeout <span class="count">(%s)</span>', 'camptix' ),
			'public' => false,
			'protected' => true,
			'show_in_admin_all_list' => true,
			'show_in_admin_status_list' => true,
		) );

		register_post_status( 'refund', array(
			'label'                     => _x( 'Refunded', 'post', 'camptix' ),
			'label_count'               => _nx_noop( 'Refunded <span class="count">(%s)</span>', 'Refunded <span class="count">(%s)</span>', 'camptix' ),
			'public' => false,
			'protected' => true,
			'show_in_admin_all_list' => true,
			'show_in_admin_status_list' => true,
		) );

		add_filter( 'display_post_states', array( $this, 'display_post_states' ) );
	}

	function display_post_states( $states ) {
		global $post;

		if ( $post->post_status == 'timeout' && get_query_var( 'post_status' ) != 'timeout' )
			$states['timeout'] = __( 'Timeout', 'camptix' );

		if ( $post->post_status == 'failed' && get_query_var( 'post_status' ) != 'failed' )
			$states['failed'] = __( 'Failed', 'camptix' );

		if ( $post->post_status == 'cancel' && get_query_var( 'post_status' ) != 'cancel' )
			$states['cancelled'] = __( 'Cancelled', 'camptix' );

		if ( $post->post_status == 'refund' && get_query_var( 'post_status' ) != 'refund' )
			$states['cancelled'] = __( 'Refunded', 'camptix' );

		return $states;
	}

	function get_default_options() {
		return apply_filters( 'camptix_default_options', array(
			'currency' => 'USD',
			'event_name' => get_bloginfo( 'name' ),
			'version' => 0,
			'reservations_enabled' => false,
			'refunds_enabled' => false,
			'refund_all_enabled' => false,
			'archived' => false,
			'payment_methods' => array(),

			'email_template_single_purchase' => __( "Hi there!\n\nYou have purchased the following ticket:\n\n[receipt]\n\nYou can edit the information for the purchased ticket at any time before the event, by visiting the following link:\n\n[ticket_url]\n\nLet us know if you have any questions!", 'camptix' ),
			'email_template_multiple_purchase' => __( "Hi there!\n\nThank you so much for purchasing a ticket and hope to see you soon at our event. You can edit your information at any time before the event, by visiting the following link:\n\n[ticket_url]\n\nLet us know if you have any questions!", 'camptix' ),
			'email_template_multiple_purchase_receipt' => __( "Hi there!\n\nYou have purchased the following tickets:\n\n[receipt]\n\nYou can edit the information for all the purchased tickets at any time before the event, by visiting the following link:\n\n[ticket_url]\n\nLet us know if you have any questions!", 'camptix' ),
			'email_template_pending_succeeded' => __( "Hey there!\n\nYour payment for [event_name] has been completed, looking forward to seeing you at the event! You can access and change your tickets information by visiting the following link:\n\n[ticket_url]\n\nLet us know if you need any help!", 'camptix' ),
			'email_template_pending_failed' => __( "Hey there!\n\nWe're so sorry, but it looks like your payment for [event_name] has failed! Please check your payment transactions for more details. If you still wish to attend the event, feel free to purchase a new ticket using the following link:\n\n[ticket_url]\n\nLet us know if you need any help!", 'camptix' ),
			'email_template_single_refund' => __( "Hey there!\n\nYour refund for [event_name] has been completed. If you change your mind and still wish to attend the event, feel free to purchase a new ticket using the following link:\n\n[ticket_url]\n\nLet us know if you need any help!", 'camptix' ),
			'email_template_multiple_refund' => __( "Hey there!\n\nYour ticket for [event_name] has been refunded. If you change your mind and still wish to attend the event, feel free to purchase a new ticket using the following link:\n\n[ticket_url]\n\nLet us know if you need any help!", 'camptix' ),
	) );
	}

	/**
	 * Returns an array of options stored in the database, or a set of defaults.
	 */
	function get_options() {

		// Allow other plugins to get CampTix options.
		if ( isset( $this->options ) && is_array( $this->options ) && ! empty( $this->options ) )
			return $this->options;

		$default_options = $this->get_default_options();
		$options = array_merge( $default_options, get_option( 'camptix_options', array() ) );

		// Allow plugins to hi-jack or read the options.
		$options = apply_filters( 'camptix_options', $options );

		// Fresh installs require no upgrades.
		if ( $options['version'] == 0 ) {
			$options['version'] = $this->version;
			update_option( 'camptix_options', $options );
		}

		// Let's see if we need to run an upgrade scenario.
		if ( apply_filters( 'camptix_enable_automatic_upgrades', true ) && $options['version'] < $this->version ) {
			$this->upgrade( $options['version'] );
		}

		return $options;
	}

	/*
	 * Controls the application logic of running an upgrade
	 */
	function upgrade( $db_version ) {
		$status = false;
		$doing_upgrade = get_option( 'camptix_doing_upgrade', false );

		if ( $doing_upgrade ) {
			$this->log( 'Upgrade already in progress, aborting concurrent attempt.', 0, null, 'upgrade' );
		} else {
			// Lock to prevent concurrent upgrades.
			update_option( 'camptix_doing_upgrade', true );

			$new_version = $this->run_upgrade_parts( $db_version );
			$options = array_merge( $this->get_default_options(), get_option( 'camptix_options', array() ) );
			$options['version'] = $new_version;
			update_option( 'camptix_options', $options );
			$status = true;

			delete_option( 'camptix_doing_upgrade' );
		}

		return $status;
	}

	/**
	 * Processes the business logic of an upgrade
	 */
	protected function run_upgrade_parts( $from ) {
		set_time_limit( 60*60 ); // Give it an hour to update.
		$this->log( 'Running upgrade script.', 0, null, 'upgrade' );

		// Because these run after get_options.
		$this->register_post_types();
		$this->register_post_statuses();

		/**
		 * Payment Methods Upgrade Routine
		 */
		if ( $from < 20120831 ) {
			$start_20120831 = microtime( true );
			$this->log( sprintf( 'Upgrading from %s to %s.', $from, 20120620 ), 0, null, 'upgrade' );

			/**
			 * Update options.
			 */
			$default_options = $this->get_default_options();
			$options = array_merge( $default_options, get_option( 'camptix_options', array() ) );

			if ( ! isset( $options['payment_options_paypal'] ) )
				$options['payment_options_paypal'] = array();

			if ( isset( $options['paypal_api_username'] ) )
				$options['payment_options_paypal']['api_username'] = $options['paypal_api_username'];

			if ( isset( $options['paypal_api_password'] ) )
				$options['payment_options_paypal']['api_password'] = $options['paypal_api_password'];

			if ( isset( $options['paypal_api_signature'] ) )
				$options['payment_options_paypal']['api_signature'] = $options['paypal_api_signature'];

			if ( isset( $options['paypal_currency'] ) )
				$options['currency'] = $options['paypal_currency'];

			if ( isset( $options['paypal_statement_subject'] ) )
				$options['event_name'] = $options['paypal_statement_subject'];

			if ( isset( $options['paypal_sandbox'] ) )
				$options['payment_options_paypal']['sandbox'] = (bool) $options['paypal_sandbox'];

			// Enable PayPal payment method by default.
			$options['payment_methods'] = array( 'paypal' => 1 );

			// Disable refunds (beta).
			$options['refunds_enabled'] = false;
			$options['refund_all_enabled'] = false;

			$this->log( 'Going to update options', null, $options, 'upgrade' );

			// Delete old options.
			/*unset( $options['paypal_api_username'] );
			unset( $options['paypal_api_password'] );
			unset( $options['paypal_api_signature'] );
			unset( $options['paypal_currency'] );
			unset( $options['paypal_statement_subject'] );
			unset( $options['paypal_sandbox'] );*/

			update_option( 'camptix_options', $options );

			/**
			 * Since we're going to wp_update_post attendees, we need the save post handler,
			 * which is loaded during init after the upgrade. Don't forget to remove the action
			 * after updating is complete, to avoid multiple actions.
			 */
			add_action( 'save_post', array( $this, 'save_attendee_post' ) );

			$paged = 1; $count = 0;
			while ( $attendees = get_posts( array(
				'post_type' => 'tix_attendee',
				'posts_per_page' => 200,
				'post_status' => array( 'publish', 'pending', 'failed', 'refund' ),
				'paged' => $paged++,
				'orderby' => 'ID',
			) ) ) {

				foreach ( $attendees as $attendee ) {
					$attendee_id = $attendee->ID;

					$transaction_id = get_post_meta( $attendee_id, 'tix_paypal_transaction_id', true );
					update_post_meta( $attendee_id, 'tix_transaction_id', $transaction_id );

					$transaction_details = get_post_meta( $attendee_id, 'tix_paypal_transaction_details', true );
					update_post_meta( $attendee_id, 'tix_transaction_details', array(
						'raw' => $transaction_details,
					) );

					// A dummy payment token. No need for rands because we don't want to mess up payment tokens in the same purchase.
					$access_token = get_post_meta( $attendee_id, 'tix_access_token', true );
					$payment_token = md5( 'payment-token-from-access-' . $access_token );
					update_post_meta( $attendee_id, 'tix_payment_token', $payment_token );

					// Delete old meta keys
					/*delete_post_meta( $attendee_id, 'tix_paypal_transaction_id' );
					delete_post_meta( $attendee_id, 'tix_paypal_transaction_details' );*/

					// Update post for other actions to kick in (and generate searchable content, etc.)
					wp_update_post( $attendee );

					// Delete caches individually rather than clean_post_cache( $attendee_id ),
					// prevents querying for children posts, saves a bunch of queries :)
					wp_cache_delete( $attendee_id, 'posts' );
					wp_cache_delete( $attendee_id, 'post_meta' );

					$count++;
				}

			}

			// Remove save_post action since we finished with wp_update_post.
			remove_action( 'save_post', array( $this, 'save_attendee_post' ) );

			$end_20120831 = microtime( true );
			$this->log( sprintf( 'Updated %d attendees data in %f seconds.', $count, $end_20120831 - $start_20120831 ), null, null, 'upgrade' );
			$from = 20120831;
		}

		/**
		 * Questions post types
		 */
		if ( $from < 20121227 ) {
			$start_20121227 = microtime( true );
			$this->log( sprintf( 'Upgrading from %s to %s.', $from, 20121227 ), 0, null, 'upgrade' );

			// Grab all tickets
			$tickets = get_posts( array(
				'post_type' => 'tix_ticket',
				'post_status' => 'any',
				'posts_per_page' => -1, // assume we don't have a bazillion tickets
			) );

			// Use this to store a map of old question-key => new question id
			$questions_map = array();

			// Grab existing questions (there shouldn't be any)
			$questions = get_posts( array(
				'post_type' => 'tix_question',
				'post_status' => 'publish',
				'posts_per_page' => -1,
			) );

			// See if any of these questions were already converted, add them to the map.
			foreach ( $questions as $question ) {
				$key = get_post_meta( $question->ID, 'tix_key', true );
				if ( $key )
					$questions_map[ $key ] = $question->ID;
			}

			// Loop through tickets and update questions to cpt.
			foreach ( $tickets as $ticket ) {
				$ticket_questions = (array) get_post_meta( $ticket->ID, 'tix_question' );
				usort( $ticket_questions, array( $this, 'usort_by_order' ) );
				$order = array();

				// In case the upgrade script ran more than once.
				delete_post_meta( $ticket->ID, 'tix_question_id' );

				foreach ( $ticket_questions as $question ) {
					$key = sanitize_title_with_dashes( $question['field'] );

					// Create the question CPT if it does not exist.
					if ( empty( $questions_map[ $key ] ) ) {
						$question_id = wp_insert_post( array(
							'post_type' => 'tix_question',
							'post_status' => 'publish',
							'post_title' => $question['field'],
						) );

						// Save attributes, including the key for future use.
						update_post_meta( $question_id, 'tix_values', $question['values'] );
						update_post_meta( $question_id, 'tix_required', $question['required'] );
						update_post_meta( $question_id, 'tix_type', $question['type'] );
						update_post_meta( $question_id, 'tix_key', $key );

						// Add new question to the map.
						$questions_map[ $key ] = $question_id;
					}

					$question_id = $questions_map[ $key ];

					// Add the new question ID to the ticket meta and order.
					add_post_meta( $ticket->ID, 'tix_question_id', $question_id );
					$order[] = $question_id;
				}

				// Add the questions order.
				update_post_meta( $ticket->ID, 'tix_questions_order', $order );
			}

			// Attendees will be updated, add the save_post hook and remove afterwards.
			add_action( 'save_post', array( $this, 'save_attendee_post' ) );

			// Loop through all attendees and convert answers to cpt.
			$paged = 1; $count = 0;
			while ( $attendees = get_posts( array(
				'post_type' => 'tix_attendee',
				'posts_per_page' => 200,
				'post_status' => 'any',
				'paged' => $paged++,
				'orderby' => 'ID',
			) ) ) {
				foreach ( $attendees as $attendee ) {
					$new_answers = array();
					$answers = (array) get_post_meta( $attendee->ID, 'tix_questions', true );

					// Just in case the upgrade script runs more than once
					$answers_backup = (array) get_post_meta( $attendee->ID, 'tix_questions_backup', true );
					if ( ! empty( $answers_backup ) )
						$answers = $answers_backup;

					foreach ( $answers as $key => $value )
						if ( ! empty( $questions_map[ $key ] ) )
							$new_answers[ $questions_map[ $key ] ] = $value;

					// Update to new answers and don't nuke old ones.
					update_post_meta( $attendee->ID, 'tix_questions', $new_answers );
					update_post_meta( $attendee->ID, 'tix_questions_backup', $answers );

					// Update post for other actions to kick in (and generate searchable content, etc.)
					wp_update_post( $attendee );

					// Delete caches.
					wp_cache_delete( $attendee->ID, 'posts' );
					wp_cache_delete( $attendee->ID, 'post_meta' );
					$count++;
				}
			}

			// Remove save_post action since we finished with wp_update_post.
			remove_action( 'save_post', array( $this, 'save_attendee_post' ) );

			$end_20121227 = microtime( true );
			$this->log( sprintf( 'Updated %d attendees data in %f seconds.', $count, $end_20121227 - $start_20121227 ), null, null, 'upgrade' );
			$from = 20121227;
		}

		$this->log( sprintf( 'Upgrade complete, current version: %s.', $this->version ), 0, null, 'upgrade' );
		return $this->version;
	}

	/**
	 * Runs during admin_init, mainly for Settings API things.
	 */
	function admin_init() {
		register_setting( 'camptix_options', 'camptix_options', array( $this, 'validate_options' ) );

		// Add settings fields
		$this->menu_setup_controls();

		// Let's add some help tabs.
		require_once dirname( __FILE__ ) . '/help.php';
	}

	function menu_setup_controls() {
		wp_enqueue_script( 'jquery-ui' );
		$section = $this->get_setup_section();

		switch ( $section ) {
			case 'general':
				add_settings_section( 'general', __( 'General Configuration', 'camptix' ), array( $this, 'menu_setup_section_general' ), 'camptix_options' );
				$this->add_settings_field_helper( 'event_name', __( 'Event Name', 'camptix' ), 'field_text' );
				$this->add_settings_field_helper( 'currency', __( 'Currency', 'camptix' ), 'field_currency' );

				$this->add_settings_field_helper( 'refunds_enabled', __( 'Enable Refunds', 'camptix' ), 'field_enable_refunds', false,
					__( "This will allows your customers to refund their tickets purchase by filling out a simple refund form.", 'camptix' )
				);

				break;
			case 'payment':
				foreach ( $this->get_available_payment_methods() as $key => $payment_method ) {
					$payment_method_obj = $this->get_payment_method_by_id( $key );

					add_settings_section( 'payment_' . $key, $payment_method_obj->name, array( $payment_method_obj, '_camptix_settings_section_callback' ), 'camptix_options' );
					add_settings_field( 'payment_method_' . $key . '_enabled', __( 'Enabled', 'camptix' ), array( $payment_method_obj, '_camptix_settings_enabled_callback' ), 'camptix_options', 'payment_' . $key, array(
						'name' => "camptix_options[payment_methods][{$key}]",
						'value' => isset( $this->options['payment_methods'][$key] ) ? (bool) $this->options['payment_methods'][ $key ] : false,
					) );

					$payment_method_obj->payment_settings_fields();
				}
				break;
			case 'email-templates':
				add_settings_section( 'general', __( 'E-mail Templates', 'camptix' ), array( $this, 'menu_setup_section_email_templates' ), 'camptix_options' );
				$this->add_settings_field_helper( 'email_template_single_purchase', __( 'Single purchase', 'camptix' ), 'field_textarea' );
				$this->add_settings_field_helper( 'email_template_multiple_purchase', __( 'Multiple purchase', 'camptix' ), 'field_textarea' );
				$this->add_settings_field_helper( 'email_template_multiple_purchase_receipt', __( 'Multiple purchase (receipt)', 'camptix' ), 'field_textarea' );
				$this->add_settings_field_helper( 'email_template_pending_succeeded', __( 'Pending Payment Succeeded', 'camptix' ), 'field_textarea' );
				$this->add_settings_field_helper( 'email_template_pending_failed', __( 'Pending Payment Failed', 'camptix' ), 'field_textarea' );
				$this->add_settings_field_helper( 'email_template_single_refund', __( 'Single Refund', 'camptix' ), 'field_textarea' );
				$this->add_settings_field_helper( 'email_template_multiple_refund', __( 'Multiple Refund', 'camptix' ), 'field_textarea' );

				foreach ( apply_filters( 'camptix_custom_email_templates', array() ) as $key => $template ) {
					$this->add_settings_field_helper( $key, $template['title'], $template['callback_method'] );
				}

				// Add a reset templates button
				add_action( 'camptix_setup_buttons', array( $this, 'setup_buttons_reset_templates' ) );
				break;
			case 'beta':

				if ( ! $this->beta_features_enabled )
					break;

				add_settings_section( 'general', __( 'Beta Features', 'camptix' ), array( $this, 'menu_setup_section_beta' ), 'camptix_options' );

				$this->add_settings_field_helper( 'reservations_enabled', __( 'Enable Reservations', 'camptix' ), 'field_yesno', false,
					__( "Reservations is a way to make sure that a certain group of people, can always purchase their tickets, even if you sell out fast.", 'camptix' )
				);

				if ( current_user_can( $this->caps['refund_all'] ) ) {
					$this->add_settings_field_helper( 'refund_all_enabled', __( 'Enable Refund All', 'camptix' ), 'field_yesno', false,
						__( "Allows to refund all purchased tickets by an admin via the Tools menu.", 'camptix' )
					);
				}

				$this->add_settings_field_helper( 'archived', __( 'Archived Event', 'camptix' ), 'field_yesno', false,
					__( "Archived events are read-only.", 'camptix' )
				);
				break;
			default:
				do_action( 'camptix_menu_setup_controls', $section );
				break;
		}
	}

	function menu_setup_section_beta() {
		echo '<p>' . __( 'Beta features are things that are being worked on in CampTix, but are not quite finished yet. You can try them out, but we do not recommend doing that in a live environment on a real event. If you have any kind of feedback on any of the beta features, please let us know.', 'camptix' ) . '</p>';
	}

	function menu_setup_section_email_templates() {
		?>

		<p><?php _e( 'Customize your confirmation e-mail templates.', 'camptix' ); ?></p>

		<p>
			<?php _e( 'You can use the following shortcodes inside the message: [event_name], [ticket_url], [receipt], and [buyer_full_name].', 'camptix' ); ?>
		</p>

		<?php if ( self::html_mail_enabled() ) : ?>
			<p>
				<?php printf(
					__( 'You can use the following HTML tags inside the message: %s.', 'camptix' ),
					esc_html( self::get_allowed_html_mail_tags( 'display' ) )
				); ?>
			</p>
		<?php endif; ?>

		<?php
	}

	function menu_setup_section_general() {
		echo '<p>' . __( 'General configuration.', 'camptix' ) . '</p>';
	}

	/**
	 * I don't like repeating code, so here's a helper for simple fields.
	 */
	function add_settings_field_helper( $key, $title, $callback_method, $section = false, $description = false ) {
		if ( ! $section )
			$section = 'general';

		$args = array(
			'name' => sprintf( 'camptix_options[%s]', $key ),
			'value' => ( ! empty( $this->options[ $key ] ) ) ? $this->options[ $key ] : null,
		);

		if ( $description )
			$args['description'] = $description;

		add_settings_field( $key, $title, array( $this, $callback_method ), 'camptix_options', $section, $args );
	}

	function setup_buttons_reset_templates() {
		submit_button( __( 'Reset Default', 'camptix' ), 'secondary', 'tix-reset-templates', false );
	}

	/**
	 * Validates options in Tickets > Setup.
	 */
	function validate_options( $input ) {
		$output = $this->options;

		// General
		if ( isset( $input['event_name'] ) )
			$output['event_name'] = sanitize_text_field( strip_tags( $input['event_name'] ) );

		if ( isset( $input['currency'] ) && array_key_exists( $input['currency'], $this->get_currencies() ) )
			$output['currency'] = $input['currency'];

		if ( isset( $input['refunds_date_end'], $input['refunds_enabled'] ) && (bool) $input['refunds_enabled'] && strtotime( $input['refunds_date_end'] ) )
			$output['refunds_date_end'] = $input['refunds_date_end'];

		$yesno_fields = array( 'refunds_enabled' );

		// Beta features checkboxes
		if ( $this->beta_features_enabled )
			$yesno_fields = array_merge( $yesno_fields, $this->get_beta_features() );

		foreach ( $yesno_fields as $field )
			if ( isset( $input[ $field ] ) )
				$output[ $field ] = (bool) $input[ $field ];

		if ( isset( $input['version'] ) )
			$output['version'] = $input['version'];

		// Enabled payment methods.
		if ( isset( $input['payment_methods'] ) ) {
			foreach ( $this->get_available_payment_methods() as $key => $method )
				if ( isset( $input['payment_methods'][ $key ] ) )
					$output['payment_methods'][ $key ] = (bool) $input['payment_methods'][ $key ];
		}

		// E-mail templates
		$email_templates = array_merge(
			array(
				'email_template_single_purchase',
				'email_template_multiple_purchase',
				'email_template_multiple_purchase_receipt',
				'email_template_pending_succeeded',
				'email_template_pending_failed',
				'email_template_single_refund',
				'email_template_multiple_refund',
			),
			array_keys( apply_filters( 'camptix_custom_email_templates', array() ) )
		);

		foreach ( $email_templates as $template ) {
			if ( isset( $input[ $template ] ) ) {
				$output[ $template ] = wp_kses( $input[ $template ], self::get_allowed_html_mail_tags() );
			}
		}

		// If the Reset Defaults button was hit
		if ( isset( $_POST['tix-reset-templates'] ) ) {
			foreach ( $email_templates as $template ) {
				unset( $output[ $template ] );
			}
		}

		$output = apply_filters( 'camptix_validate_options', $output, $input );

		$current_user = wp_get_current_user();
		$log_data = array(
			'old'      => $this->options,
			'new'      => $output,
			'username' => $current_user->user_login,
		);
		$this->log( 'Options updated.', 0, $log_data );

		return $output;
	}

	function get_beta_features() {
		return array(
			'reservations_enabled',
			'refund_all_enabled',
			'archived',
		);
	}

	/**
	 * A text input for the Settings API, name and value attributes
	 * should be specified in $args. Same goes for the rest.
	 */
	function field_text( $args ) {
		?>
		<input type="text" name="<?php echo esc_attr( $args['name'] ); ?>" value="<?php echo esc_attr( $args['value'] ); ?>" class="regular-text" />
		<?php
	}

	function field_textarea( $args ) {
		?>
		<textarea class="large-text" rows="5" name="<?php echo esc_attr( $args['name'] ); ?>"><?php echo esc_textarea( $args['value'] ); ?></textarea>
		<?php
	}

	/**
	 * A checkbox field for the Settings API.
	 */
	function field_checkbox( $args ) {
		$args = array_merge(
			array(
				'id'    => '',
				'name'  => '',
				'class' => '',
				'value' => ''
			),
			$args
		)

		?>

		<input
			type="checkbox"
			id="<?php echo esc_attr( $args['name'] ); ?>"
			name="<?php echo esc_attr( $args['name'] ); ?>"
			class="<?php echo sanitize_html_class( $args['class'] ); ?>"
			value="1"
			<?php checked( $args['value'] ); ?> />

		<?php
	}

	/**
	 * A yes-no field for the Settings API.
	 */
	function field_yesno( $args ) {
		?>
		<label class="tix-yes-no description"><input type="radio" name="<?php echo esc_attr( $args['name'] ); ?>" value="1" <?php checked( $args['value'], true ); ?>> <?php _e( 'Yes', 'camptix' ); ?></label>
		<label class="tix-yes-no description"><input type="radio" name="<?php echo esc_attr( $args['name'] ); ?>" value="0" <?php checked( $args['value'], false ); ?>> <?php _e( 'No', 'camptix' ); ?></label>

		<?php if ( isset( $args['description'] ) ) : ?>
		<p class="description"><?php echo esc_html( $args['description'] ); ?></p>
		<?php endif; ?>
		<?php
	}

	function field_enable_refunds( $args ) {
		$refunds_enabled = (bool) $this->options['refunds_enabled'];
		$refunds_date_end = isset( $this->options['refunds_date_end'] ) && strtotime( $this->options['refunds_date_end'] ) ? $this->options['refunds_date_end'] : date( 'Y-m-d' );
		?>
		<div id="tix-refunds-enabled-radios">
			<label class="tix-yes-no description"><input type="radio" name="<?php echo esc_attr( $args['name'] ); ?>" value="1" <?php checked( $args['value'], true ); ?>> <?php _e( 'Yes', 'camptix' ); ?></label>
			<label class="tix-yes-no description"><input type="radio" name="<?php echo esc_attr( $args['name'] ); ?>" value="0" <?php checked( $args['value'], false ); ?>> <?php _e( 'No', 'camptix' ); ?></label>
		</div>

		<div id="tix-refunds-date" class="<?php if ( ! $refunds_enabled ) echo 'hide-if-js'; ?>" style="margin: 20px 0;">
			<label><?php _e( 'Allow refunds until:', 'camptix' ); ?></label>
			<input type="text" name="camptix_options[refunds_date_end]" value="<?php echo esc_attr( $refunds_date_end ); ?>" class="tix-date-field" />
		</div>

		<?php if ( isset( $args['description'] ) ) : ?>
		<p class="description"><?php echo wp_kses_post( $args['description'] ); ?></p>
		<?php endif; ?>
		<?php
	}

	/**
	 * The currency field for the Settings API.
	 */
	function field_currency( $args ) {
		?>
		<select name="<?php echo esc_attr( $args['name'] ); ?>">
			<?php foreach ( $this->get_currencies() as $key => $currency ) : ?>
				<option value="<?php echo esc_attr( $key ); ?>" <?php selected( $key, $args['value'] ); ?>><?php
					echo esc_html( $currency['label'] );
					echo " (" . esc_html( $this->append_currency( 10000, true, $key ) ) . ")";
				?></option>
			<?php endforeach; ?>
		</select>
		<p class="description"><?php _e( 'Make sure you select a currency that is supported by all the payment methods you plan to use.', 'camptix' ); ?></p>
		<?php
	}

	/**
	 * Get available currencies. Returns an assoc array of currencies
	 * where the key is the 3-character ISO-4217 currency code, and the
	 * value is an assoc array with a currency label and format.
	 * @link http://goo.gl/Gp0ri (paypal currency codes)
	 */
	function get_currencies() {
		return apply_filters( 'camptix_currencies', array(
			'AUD' => array(
				'label' => __( 'Australian Dollar', 'camptix' ),
				'locale' => 'en_AU.UTF-8',
			),
			'CAD' => array(
				'label' => __( 'Canadian Dollar', 'camptix' ),
				'locale' => 'en_CA.UTF-8',
			),
			'EUR' => array(
				'label' => __( 'Euro', 'camptix' ),
				'format' => '€ %s',
			),
			'GBP' => array(
				'label' => __( 'Pound Sterling', 'camptix' ),
				'locale' => 'en_GB.UTF-8',
			),
			'JPY' => array(
				'label' => __( 'Japanese Yen', 'camptix' ),
				'locale' => 'ja_JP.UTF-8',
			),
			'USD' => array(
				'label' => __( 'U.S. Dollar', 'camptix' ),
				'locale' => 'en_US.UTF-8',
			),
			'NZD' => array(
				'label' => __( 'N.Z. Dollar', 'camptix' ),
				'locale' => 'en_NZ.UTF-8',
			),
			'CHF' => array(
				'label' => __( 'Swiss Franc', 'camptix' ),
				'locale' => 'fr_CH.UTF-8',
			),
			'HKD' => array(
				'label' => __( 'Hong Kong Dollar', 'camptix' ),
				'locale' => 'zh_HK.UTF-8',
			),
			'SGD' => array(
				'label' => __( 'Singapore Dollar', 'camptix' ),
				'format' => '$ %s',
			),
			'SEK' => array(
				'label' => __( 'Swedish Krona', 'camptix' ),
				'locale' => 'sv_SE.UTF-8',
			),
			'DKK' => array(
				'label' => __( 'Danish Krone', 'camptix' ),
				'locale' => 'da_DK.UTF-8',
			),
			'PLN' => array(
				'label' => __( 'Polish Zloty', 'camptix' ),
				'locale' => 'pl_PL.UTF-8',
			),
			'NOK' => array(
				'label' => __( 'Norwegian Krone', 'camptix' ),
				'locale' => 'no_NO.UTF-8',
			),
			'HUF' => array(
				'label' => __( 'Hungarian Forint', 'camptix' ),
				'locale' => 'hu_HU.UTF-8',
			),
			'CZK' => array(
				'label' => __( 'Czech Koruna', 'camptix' ),
				'locale' => 'hcs_CZ.UTF-8',
			),
			'ILS' => array(
				'label' => __( 'Israeli New Sheqel', 'camptix' ),
				'locale' => 'he_IL.UTF-8',
			),
			'MXN' => array(
				'label' => __( 'Mexican Peso', 'camptix' ),
				'format' => '$ %s',
			),
			'BRL' => array(
				'label' => __( 'Brazilian Real', 'camptix' ),
				'locale' => 'pt_BR.UTF-8',
			),
			'MYR' => array(
				'label' => __( 'Malaysian Ringgit', 'camptix' ),
				'format' => 'RM %s',
			),
			'PHP' => array(
				'label' => __( 'Philippine Peso', 'camptix' ),
				'format' => '₱ %s',
			),
			'TWD' => array(
				'label' => __( 'New Taiwan Dollar', 'camptix' ),
				'locale' => 'zh_TW.UTF-8',
			),
			'THB' => array(
				'label' => __( 'Thai Baht', 'camptix' ),
				'format' => '฿ %s',
			),
			'TRY' => array(
				'label' => __( 'Turkish Lira', 'camptix' ),
				'locale' => 'tr_TR.UTF-8',
			),
		) );
	}

	/**
	 * Give me a price and I'll format it according to the set currency for
	 * display. Don't send my output anywhere but the screen, because I will
	 * print &nbsp; and other things.
	 */
	function append_currency( $price, $nbsp = true, $currency_key = false ) {
		$currencies = $this->get_currencies();
		$currency = $currencies[ $this->options['currency'] ];
		if ( $currency_key )
			$currency = $currencies[ $currency_key ];

		if ( ! $currency )
			$currency = array( 'label' => __( 'U.S. Dollar', 'camptix' ), 'locale' => 'en_US.UTF-8' );

		if ( isset( $currency['locale'] ) ) {
			setlocale( LC_MONETARY, $currency['locale'] );
		}

		$with_currency = money_format( '%n', $price );

		if ( isset( $currency['format'] ) && $currency['format'] ) {
			$with_currency = sprintf( $currency['format'], number_format( (float) $price, 2 ) );
		}

		if ( $nbsp )
			$with_currency = str_replace( ' ', '&nbsp;', $with_currency );

		return $with_currency;
	}

	/*
	 * Formats a string containing a first and/or last name, based on the specified name ordering scheme
	 * @param string $name_string A string containing placeholders for the given and surnames. e.g., "Hello %first% %last%"
	 * @param string given_name
	 * @param string $surname
	 * @return string
	 */
	function format_name_string( $name_string, $given_name, $surname ) {
		switch( apply_filters( 'camptix_name_order', 'western' ) ) {
			case 'eastern':
				$name_string = str_replace( '%first%', $surname, $name_string );
				$name_string = str_replace( '%last%', $given_name, $name_string );
			break;

			case 'western-reverse':
				$name_string = str_replace( '%first%', $surname . ',', $name_string );
				$name_string = str_replace( '%last%', $given_name, $name_string );
			break;

			case 'western':
			default:
				$name_string = str_replace( '%first%', $given_name, $name_string );
				$name_string = str_replace( '%last%', $surname, $name_string );
			break;
		}

		return $name_string;
	}

	/**
	 * Oh the holy admin menu!
	 */
	function admin_menu() {
		add_submenu_page( 'edit.php?post_type=tix_ticket', __( 'Tools', 'camptix' ), __( 'Tools', 'camptix' ), $this->caps['manage_tools'], 'camptix_tools', array( $this, 'menu_tools' ) );
		add_submenu_page( 'edit.php?post_type=tix_ticket', __( 'Setup', 'camptix' ), __( 'Setup', 'camptix' ), $this->caps['manage_options'], 'camptix_options', array( $this, 'menu_setup' ) );
		remove_submenu_page( 'edit.php?post_type=tix_ticket', 'post-new.php?post_type=tix_ticket' );
	}

	/**
	 * When squeezing several custom post types under one top-level menu item, WordPress
	 * tends to get confused which menu item is currently active, especially around post-new.php.
	 * This function runs during admin_head and hacks into some of the global variables that are
	 * used to construct the menu.
	 */
	function admin_menu_fix() {
		global $self, $parent_file, $submenu_file, $plugin_page, $pagenow, $typenow;

		// Make sure Coupons is selected when adding a new coupon
		if ( 'post-new.php' == $pagenow && 'tix_coupon' == $typenow )
			$submenu_file = 'edit.php?post_type=tix_coupon';

		// Make sure Attendees is selected when adding a new attendee
		if ( 'post-new.php' == $pagenow && 'tix_attendee' == $typenow )
			$submenu_file = 'edit.php?post_type=tix_attendee';

		// Make sure Tickets is selected when creating a new ticket
		if ( 'post-new.php' == $pagenow && 'tix_ticket' == $typenow )
			$submenu_file = 'edit.php?post_type=tix_ticket';
	}

	/**
	 * The Tickets > Setup screen, uses the Settings API.
	 */
	function menu_setup() {
		?>
		<div class="wrap">
			<h1><?php _e( 'CampTix Setup', 'camptix' ); ?></h1>
			<?php settings_errors(); ?>
			<h3 class="nav-tab-wrapper"><?php $this->menu_setup_tabs(); ?></h3>
			<form method="post" action="options.php" class="tix-setup-form">
				<?php
					settings_fields( 'camptix_options' );
					do_settings_sections( 'camptix_options' );
				?>
				<p class="submit">
					<?php submit_button( '', 'primary', 'submit', false ); ?>
					<?php do_action( 'camptix_setup_buttons' ); ?>
				</p>
			</form>
		</div>
		<?php
	}

	/**
	 * Remember the tabs in Tickets > Tools? This tells
	 * us which tab is currently active.
	 */
	function get_setup_section() {
		if ( isset( $_REQUEST['tix_section'] ) )
			return strtolower( $_REQUEST['tix_section'] );

		return 'general';
	}

	/**
	 * Tabs for Tickets > Tools, outputs the markup.
	 */
	function menu_setup_tabs() {
		$current_section = $this->get_setup_section();
		$sections = array(
			'general' => __( 'General', 'camptix' ),
			'payment' => __( 'Payment', 'camptix' ),
			'email-templates' => __( 'E-mail Templates', 'camptix' ),
		);

		if ( $this->beta_features_enabled )
			$sections['beta'] = __( 'Beta', 'camptix' );

		$sections = apply_filters( 'camptix_setup_sections', $sections );

		foreach ( $sections as $section_key => $section_caption ) {
			$active = $current_section === $section_key ? 'nav-tab-active' : '';
			$url = add_query_arg( 'tix_section', $section_key );
			echo '<a class="nav-tab ' . esc_attr( $active ) . '" href="' . esc_url( $url ) . '">' . esc_html( $section_caption ) . '</a>';
		}
	}

	/**
	 * The Tickets > Tools screen, doesn't use the settings API, but does use tabs.
	 */
	function menu_tools() {
		?>
		<div class="wrap">
			<h1><?php _e( 'CampTix Tools', 'camptix' ); ?></h1>
			<?php settings_errors(); ?>
			<h3 class="nav-tab-wrapper"><?php $this->menu_tools_tabs(); ?></h3>
			<?php
				$section = $this->get_tools_section();
				if ( $section == 'summarize' )
					$this->menu_tools_summarize();
				elseif ( $section == 'revenue' )
					$this->menu_tools_revenue();
				elseif ( $section == 'export' )
					$this->menu_tools_export();
				elseif ( $section == 'notify' )
					$this->menu_tools_notify();
				elseif ( $section == 'refund' && ! $this->options['archived'] )
					$this->menu_tools_refund();
				else
					do_action( 'camptix_menu_tools_' . $section );
			?>
		</div>
		<?php
	}

	/**
	 * Remember the tabs in Tickets > Tools? This tells
	 * us which tab is currently active.
	 */
	function get_tools_section() {
		if ( isset( $_REQUEST['tix_section'] ) )
			return strtolower( $_REQUEST['tix_section'] );

		return 'summarize';
	}

	/**
	 * Tabs for Tickets > Tools, outputs the markup.
	 */
	function menu_tools_tabs() {
		$current_section = $this->get_tools_section();
		$sections = apply_filters( 'camptix_menu_tools_tabs', array(
			'summarize' => __( 'Summarize', 'camptix' ),
			'revenue' => __( 'Revenue', 'camptix' ),
			'export' => __( 'Export', 'camptix' ),
			'notify' => __( 'Notify', 'camptix' ),
		) );

		if ( current_user_can( $this->caps['refund_all'] ) && ! $this->options['archived'] && $this->options['refund_all_enabled'] )
			$sections['refund'] = __( 'Refund', 'camptix' );

		foreach ( $sections as $section_key => $section_caption ) {
			$active = $current_section === $section_key ? 'nav-tab-active' : '';
			$url = add_query_arg( 'tix_section', $section_key );
			echo '<a class="nav-tab ' . esc_attr( $active ) . '" href="' . esc_url( $url ) . '">' . esc_html( $section_caption ) . '</a>';
		}
	}

	/**
	 * Tools > Summarize, the screen that outputs the summary tables,
	 * provides an export option, powered by the summarize_admin_init method,
	 * hooked (almost) at admin_init, because of additional headers. Doesn't use
	 * the Settings API so check for nonces/referrers and caps.
	 * @see summarize_admin_init()
	 */
	function menu_tools_summarize() {
		$summarize_by = isset( $_POST['tix_summarize_by'] ) ? $_POST['tix_summarize_by'] : 'ticket';
		?>
		<form method="post" action="<?php echo esc_url( add_query_arg( 'tix_summarize', 1 ) ); ?>">
			<table class="form-table">
				<tbody>
					<tr>
						<th scope="row"><?php _e( 'Summarize by', 'camptix' ); ?></th>
						<td>
							<select name="tix_summarize_by">
								<?php foreach ( $this->get_available_summary_fields() as $value => $caption ) : ?>
									<?php
										if ( function_exists( 'mb_strlen' ) && function_exists( 'mb_substr' ) )
											$caption = mb_strlen( $caption ) > 30 ? mb_substr( $caption, 0, 30 ) . '...' : $caption;
										else
											$caption = strlen( $caption ) > 30 ? substr( $caption, 0, 30 ) . '...' : $caption;
									?>
									<option value="<?php echo esc_attr( $value ); ?>" <?php selected( $value, $summarize_by ); ?>><?php echo esc_html( $caption ); ?></option>
								<?php endforeach; ?>
							</select>
						</td>
					</tr>
				</tbody>
			</table>
			<p class="submit">
				<?php wp_nonce_field( 'tix_summarize' ); ?>
				<input type="hidden" name="tix_summarize_submit" value="1" />
				<input type="submit" class="button-primary" value="<?php esc_attr_e( 'Show Summary', 'camptix' ); ?>" />
				<input type="submit" name="tix_export_summary" value="<?php esc_attr_e( 'Export Summary to CSV', 'camptix' ); ?>" class="button" />
			</p>
		</form>

		<?php if ( isset( $_POST['tix_summarize_submit'] ) && check_admin_referer( 'tix_summarize' ) && array_key_exists( $summarize_by, $this->get_available_summary_fields() ) ) : ?>
		<?php
			$fields = $this->get_available_summary_fields();
			$summary = $this->get_summary( $summarize_by );
			$summary_title = $fields[ $summarize_by ];
			$alt = '';

			$rows = array();
			foreach ( $summary as $entry )
				$rows[] = array(
					esc_html( $summary_title ) => esc_html( $entry['label'] ),
					__( 'Count', 'camptix' ) => esc_html( $entry['count'] )
				);

			// Render the widefat table.
			$this->table( $rows, 'widefat tix-summarize' );
		?>

		<?php endif; // summarize_submit ?>
		<?php
	}

	/**
	 * Hooked at (almost) admin_init, fired if one requested a
	 * Summarize export. Serves the download file.
	 * @see menu_tools_summarize()
	 */
	function summarize_admin_init() {
		if ( ! current_user_can( $this->caps['manage_tools'] ) || 'summarize' != $this->get_tools_section() )
			return;

		if ( isset( $_POST['tix_export_summary'], $_POST['tix_summarize_by'] ) && check_admin_referer( 'tix_summarize' ) ) {
			$summarize_by = $_POST['tix_summarize_by'];
			if ( ! array_key_exists( $summarize_by, $this->get_available_summary_fields() ) )
				return;

			$fields = $this->get_available_summary_fields();
			$summary = $this->get_summary( $summarize_by );
			$summary_title = $fields[ $summarize_by ];
			$filename = sprintf( 'camptix-summary-%s-%s.csv', sanitize_title_with_dashes( $summary_title ), date( 'Y-m-d' ) );

			header( 'Content-Type: text/csv' );
			header( 'Content-Disposition: attachment; filename="' . $filename . '"' );
			header( "Cache-control: private" );
			header( 'Pragma: private' );
			header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" );

			$stream = fopen( "php://output", 'w' );

			$headers = array( $summary_title, __( 'Count', 'camptix' ) );
			fputcsv( $stream, self::esc_csv( $headers ) );
			foreach ( $summary as $entry ) {
				fputcsv( $stream, self::esc_csv( $entry ), ',', '"' );
			}

			fclose( $stream );
			die();
		}
	}

	/**
	 * Returns a summary of all attendees. A lot of @magic here and
	 * watch out for actions and filters.
	 * @see increment_summary(), get_available_summary_fields()
	 */
	function get_summary( $summarize_by = 'ticket' ) {
		global $post;

		$summary = array();
		if ( ! array_key_exists( $summarize_by, $this->get_available_summary_fields() ) )
			return $summary;

		$paged = 1;
		while ( $attendees = get_posts( array(
			'post_type' => 'tix_attendee',
			'post_status' => array( 'publish', 'pending' ),
			'posts_per_page' => 200,
			'paged' => $paged++,
			'orderby' => 'ID',
			'order' => 'ASC',
			'cache_results' => false, // no caching
		) ) ) {

			$attendee_ids = array();
			foreach ( $attendees as $attendee )
				$attendee_ids[] = $attendee->ID;

			/**
			 * Magic here, to by-pass object caching. See Revenue report for more info.
			 */
			$this->filter_post_meta = $this->prepare_metadata_for( $attendee_ids );
			unset( $attendee_ids, $attendee );

			foreach ( $attendees as $attendee ) {

				if ( $summarize_by == 'ticket' ) {
					$ticket_id = get_post_meta( $attendee->ID, 'tix_ticket_id', true );
					if ( $this->is_ticket_valid_for_display( $ticket_id ) ) {
						$ticket = get_post( $ticket_id );
						$this->increment_summary( $summary, $ticket->post_title );
					} else {
						$this->increment_summary( $summary, 'None' );
					}
				} elseif ( $summarize_by == 'purchase_date' ) {
					$date = mysql2date( 'F, jS Y', $attendee->post_date );
					$this->increment_summary( $summary, $date );
				} elseif ( $summarize_by == 'purchase_time' ) {
					$date = mysql2date( 'H:00', $attendee->post_date );
					$this->increment_summary( $summary, $date );
				} elseif ( $summarize_by == 'purchase_datetime' ) {
					$date = mysql2date( 'F, jS Y \a\t H:00', $attendee->post_date );
					$this->increment_summary( $summary, $date );
				} elseif ( $summarize_by == 'purchase_dayofweek' ) {
					$date = mysql2date( 'l', $attendee->post_date );
					$this->increment_summary( $summary, $date );
				} elseif ( $summarize_by == 'coupon' ) {
					$coupon = get_post_meta( $attendee->ID, 'tix_coupon', true );
					if ( ! $coupon )
						$coupon = __( 'None', 'camptix' );
					$this->increment_summary( $summary, $coupon );
				} else {

					// Let other folks summarize too.
					do_action_ref_array( 'camptix_summarize_by_' . $summarize_by, array( &$summary, $attendee ) );
					do_action_ref_array( 'camptix_summarize_by_field', array( $summarize_by, &$summary, $attendee ) );
				}
			}
		}

		// Sort the summary by count.
		uasort( $summary, array( $this, 'usort_by_count' ) );
		return $summary;
	}

	/**
	 * Returns an array of available Summarize reports.
	 */
	function get_available_summary_fields() {
		return apply_filters( 'camptix_summary_fields', array(
			'ticket' => __( 'Ticket type', 'camptix' ),
			'coupon' => __( 'Coupon code', 'camptix' ),
			'purchase_date' => __( 'Purchase date', 'camptix' ),
			'purchase_time' => __( 'Purchase time', 'camptix' ),
			'purchase_datetime' => __( 'Purchase date and time', 'camptix' ),
			'purchase_dayofweek' => __( 'Purchase day of week', 'camptix' ),
		) );
	}

	/**
	 * Increment summary label.
	 *
	 * @see get_summary
	 * @param $summary array The main summary array, passed by ref.
	 * @param $label string|array The label to increment in the summary.
	 */
	function increment_summary( &$summary, $label ) {

		// For checkboxes
		if ( is_array( $label ) )
			$label = implode( ', ', (array) $label );

		$key = 'tix_' . md5( $label );
		if ( isset( $summary[ $key ] ) )
			$summary[ $key ]['count']++;
		else
			$summary[ $key ] = array( 'label' => $label, 'count' => 1 );
	}

	/**
	 * Updates a stats value.
	 */
	function update_stats( $key, $value ) {
		$stats = get_option( 'camptix_stats', array() );
		$stats[ $key ] = $value;
		update_option( 'camptix_stats', $stats );
		return;
	}

	/**
	 * Increments a stats value.
	 */
	function increment_stats( $key, $step = 1 ) {
		$stats = get_option( 'camptix_stats', array() );
		if ( ! isset( $stats[ $key ] ) )
			$stats[ $key ] = 0;

		$stats[ $key ] += $step;
		update_option( 'camptix_stats', $stats );
		return;
	}

	/**
	 * Returns an existing stats value or zero.
	 */
	function get_stats( $key ) {
		$stats = get_option( 'camptix_stats', array() );
		if ( isset( $stats[ $key ] ) )
			return $stats[ $key ];

		return 0;
	}

	/**
	 * Runs during any post status transition. Mainly used to increment
	 * stats for better network reporting.
	 */
	function transition_post_status( $new, $old, $post ) {

		// Just in case.
		if ( $new == $old )
			return;

		if ( 'publish' == $new && 'tix_event' != $post->post_type && 'tix_' == substr( $post->post_type, 0, 4 ) )
			$this->log( 'New '. $post->post_type .' created.', $post->ID, array( $post ) );

		if ( $post->post_type == 'tix_attendee' ) {

			$multiplier = 0;

			// Publish or pending was set
			if ( $new == 'publish' || $new == 'pending' )
				if ( $old != 'publish' && $old != 'pending' )
					$multiplier = 1;

			// Publish or pending was removed
			if ( $old == 'publish' || $old == 'pending' )
				if ( $new != 'publish' && $new != 'pending' )
					$multiplier = -1;

			if ( $multiplier != 0 ) {
				$this->increment_stats( 'sold', 1 * $multiplier );
				$this->increment_stats( 'remaining', -1 * $multiplier );

				$price = (float) get_post_meta( $post->ID, 'tix_ticket_price', true );
				$discounted_price = (float) get_post_meta( $post->ID, 'tix_ticket_discounted_price', true );
				$discounted = $price - $discounted_price;

				$this->increment_stats( 'subtotal', $price * $multiplier );
				$this->increment_stats( 'discounted', $discounted * $multiplier );
				$this->increment_stats( 'revenue', $discounted_price * $multiplier );

				// Bust page/object cache to get accurate remaining counts
				$this->flush_tickets_page();
			}
		}
	}

	/**
	 * Handle AJAX requests for client-side stats
	 *
	 * This doesn't use nonces to verify the request because they'd be cached in the static page cache and
	 * therefore invalid.
	 */
	public function process_client_stats() {
		$valid_stats = array( 'tickets_form_unique_visitors' );

		if ( empty( $_REQUEST['command'] ) || empty( $_REQUEST['stat'] ) ) {
			wp_send_json_error();
		}

		$this->maybe_set_reservation();

		if ( ! in_array( $_REQUEST['stat'], $valid_stats ) || 0 == $this->number_available_tickets() ) {
			wp_send_json_error();
		}

		switch ( $_REQUEST['command'] ) {
			case 'increment':
				$this->increment_stats( $_REQUEST['stat'] );
				wp_send_json_success();
				break;
		}

		wp_send_json_error();
	}

	/**
	 * Count the number of tickets that are available for purchase
	 *
	 * @return int
	 */
	protected function number_available_tickets() {
		$available_tickets = 0;
		$tickets = get_posts( array(
			'post_type'      => 'tix_ticket',
			'post_status'    => 'publish',
			'posts_per_page' => -1,
		) );

		foreach ( $tickets as $ticket ) {
			if ( $this->is_ticket_valid_for_purchase( $ticket ) ) {
				$available_tickets++;
			}
		}

		return $available_tickets;
	}

	/**
	 * Returns a (huge) array of metadata for passed in object IDs. Use with caution.
	 */
	function prepare_metadata_for( $ids_array ) {
		global $wpdb;

		$object_ids = array_map( 'intval', $ids_array );
		$id_list = join( ',', $object_ids );
		$table = _get_meta_table( 'post' );
		$meta_list = $wpdb->get_results( "SELECT post_id, meta_key, meta_value FROM $table WHERE post_id IN ( $id_list )" );
		$metadata = array();
		foreach ( $meta_list as $row )
			$metadata[$row->post_id][$row->meta_key][] = $row->meta_value;

		unset( $meta_list, $id_list, $object_ids, $ids_array );
		return $metadata;
	}

	/**
	 * Filters on get_post_metadata, checks $this->filter_post_meta for object ID and if
	 * it exists will serve the result from the array (or false) to by-pass object caching.
	 */
	function get_post_metadata( $return, $object_id, $meta_key, $single ) {
		if ( isset( $this->filter_post_meta ) && isset( $this->filter_post_meta[$object_id] ) ) {
			$meta = $this->filter_post_meta[$object_id];
			if ( isset( $meta[$meta_key] ) ) {
				$meta = $meta[$meta_key];

				if ( $single )
					return array( 0 => maybe_unserialize( $meta[0] ) );
				else
					return array_map( 'maybe_unserialize', $meta );
			}
			return false;
		}
		return $return;
	}

	function menu_tools_revenue() {
		$results = $this->generate_revenue_report_data();

		if ( $results['totals']->revenue != $results['actual_total'] ) {
			printf(
				'<div class="updated settings-error below-h2"><p>%s</p></div>',
				sprintf(
					__( '<strong>Woah!</strong> The revenue total does not match with the transactions total. The actual total is: <strong>%s</strong>. Something somewhere has gone wrong, please report this.', 'camptix' ),
					esc_html( $this->append_currency( $results['actual_total'] ) )
				)
			);
		}

		$this->table( $results['rows'], 'widefat tix-revenue-summary' );
		printf( '<p><span class="description">' . __( 'Revenue report generated in %s seconds.', 'camptix' ) . '</span></p>', $results['run_time'] );
	}

	function generate_revenue_report_data() {
		global $post;
		$start_time = microtime( true );

		$tickets = array();
		$totals = new stdClass;
		$totals->sold = 0;
		$totals->remaining = 0;
		$totals->sub_total = 0;
		$totals->discounted = 0;
		$totals->revenue = 0;

		// This will hold all our transactions.
		$transactions = array();

		$tickets_query = new WP_Query( array(
			'post_type' => 'tix_ticket',
			'posts_per_page' => -1,
			'post_status' => 'any',
		) );

		while ( $tickets_query->have_posts() ) {
			$tickets_query->the_post();
			$post->tix_price = get_post_meta( $post->ID, 'tix_price', true );
			$post->tix_remaining = $this->get_remaining_tickets( $post->ID );
			$post->tix_sold_count = 0;
			$post->tix_discounted = 0;
			$tickets[$post->ID] = $post;
		}

		$paged = 1;
		while ( $attendees = get_posts( array(
			'post_type' => 'tix_attendee',
			'posts_per_page' => 200,
			'post_status' => array( 'publish' ),
			'paged' => $paged++,
			'fields' => 'ids', // ! no post objects
			'orderby' => 'ID',
			'order' => 'ASC',
			'cache_results' => false, // no caching
		) ) ) {

			/**
			 * TL;DR: Use prepare_metadata_for to preload meta, set $this->filter_post_meta = false; when done.
			 *
			 * Let's talk about performance. As seen from the get_posts query above, we definitely
			 * don't want to cache any of our attendees for this loop, nor do we want to put them into
			 * object cache and delete them soon afterwards, which works, but not when a persistent
			 * object caching plugin is active. We don't want to waste 5000 memcached puts and 5000
			 * memcached deletes. So, wanna see a magic trick? If $this->filter_post_meta is set to an
			 * array, it'll activate the get_post_metadata filter which will look for the requested metadata
			 * in that array and never touch the database or object cache. We use $this->prepare_metadata_for( $attendees )
			 * to preload that data from the database with an SQL query, again, by-passing any sort of object caching.
			 * Future calls to get_post_meta with a post ID that is present in $this->filter_post_meta will use that
			 * short circuit. Don't forget to clean up with $this->filter_post_meta = false; when you're done.
			 */
			$this->filter_post_meta = $this->prepare_metadata_for( $attendees );

			foreach ( $attendees as $attendee_id ) {

				$ticket_id = get_post_meta( $attendee_id, 'tix_ticket_id', true );
				if ( isset( $tickets[$ticket_id] ) ) {
					$tickets[$ticket_id]->tix_sold_count++;

					$order_total = (float) get_post_meta( $attendee_id, 'tix_order_total', true );
					$txn = get_post_meta( $attendee_id, 'tix_transaction_id', true );
					if ( ! empty( $txn ) && ! isset( $transactions[$txn] ) )
						$transactions[$txn] = $order_total;

					$coupon_id = get_post_meta( $attendee_id, 'tix_coupon_id', true );
					if ( $coupon_id ) {
						$discount_price = get_post_meta( $coupon_id, 'tix_discount_price', true );
						$discount_percent = get_post_meta( $coupon_id, 'tix_discount_percent', true );
						if ( $discount_price > 0 ) {
							if ( $discount_price > $tickets[$ticket_id]->tix_price )
								$discount_price = $tickets[$ticket_id]->tix_price;

							$tickets[$ticket_id]->tix_discounted += $discount_price;
						} elseif ( $discount_percent > 0 ) {
							$original = $tickets[$ticket_id]->tix_price;
							$discounted = $tickets[$ticket_id]->tix_price - ( $tickets[$ticket_id]->tix_price * $discount_percent / 100 );
							$discounted = $original - $discounted;
							$tickets[$ticket_id]->tix_discounted += $discounted;
						}
					}
				}

				// Commented out because we're not doing any caching.
				// Delete caches individually rather than clean_post_cache( $attendee_id ),
				// prevents querying for children posts, saves a bunch of queries :)
				// wp_cache_delete( $attendee_id, 'posts' );
				// wp_cache_delete( $attendee_id, 'post_meta' );
			}

			// Clear prepared metadata.
			$this->filter_post_meta = false;
		}

		$actual_total = array_sum( $transactions );
		unset( $transactions, $attendees );

		$rows = array();
		foreach ( $tickets as $ticket ) {
			$totals->sold += $ticket->tix_sold_count;
			$totals->discounted += $ticket->tix_discounted;
			$totals->sub_total += $ticket->tix_sold_count * $ticket->tix_price;
			$totals->revenue += $ticket->tix_sold_count * $ticket->tix_price - $ticket->tix_discounted;
			$totals->remaining += $ticket->tix_remaining;

			$rows[] = array(
				__( 'Ticket type', 'camptix' ) => esc_html( $ticket->post_title ),
				__( 'Sold', 'camptix' ) => $ticket->tix_sold_count,
				__( 'Remaining', 'camptix' ) => $ticket->tix_remaining,
				__( 'Sub-Total', 'camptix' ) => $this->append_currency( $ticket->tix_sold_count * $ticket->tix_price ),
				__( 'Discounted', 'camptix' ) => $this->append_currency( $ticket->tix_discounted ),
				__( 'Revenue', 'camptix' ) => $this->append_currency( $ticket->tix_sold_count * $ticket->tix_price - $ticket->tix_discounted ),
			);
		}
		$rows[] = array(
			__( 'Ticket type', 'camptix' ) => 'Total',
			__( 'Sold', 'camptix' ) => $totals->sold,
			__( 'Remaining', 'camptix' ) => $totals->remaining,
			__( 'Sub-Total', 'camptix' ) => $this->append_currency( $totals->sub_total ),
			__( 'Discounted', 'camptix' ) => $this->append_currency( $totals->discounted ),
			__( 'Revenue', 'camptix' ) => $this->append_currency( $totals->revenue ),
		);

		// Update stats
		$this->update_stats( 'sold', $totals->sold );
		$this->update_stats( 'remaining', $totals->remaining );
		$this->update_stats( 'subtotal', $totals->sub_total );
		$this->update_stats( 'discounted', $totals->discounted );
		$this->update_stats( 'revenue', $totals->revenue );

		$results = array(
			'totals' => $totals,
			'actual_total' => $actual_total,
			'rows' => $rows,
			'run_time' => number_format( microtime( true ) - $start_time, 3 ),
		);

		$this->log( sprintf( 'Revenue report data generated in %s seconds', $results['run_time'] ) );
		return $results;
	}

	/**
	 * Export tools menu, nothing funky here.
	 * @see export_admin_init()
	 */
	function menu_tools_export() {
		?>
		<form method="post" action="<?php echo esc_url( add_query_arg( 'tix_export', 1 ) ); ?>">
			<table class="form-table">
				<tbody>
					<tr>
						<th scope="row"><?php _e( 'Export all attendees data to', 'camptix' ); ?></th>
						<td>
							<select name="tix_export_to">
								<option value="csv">CSV</option>
								<option value="xml">XML</option>
								<option disabled="disabled" value="pdf">PDF <?php _e( '(coming soon)', 'camptix' ); ?></option>
							</select>
						</td>
					</tr>
				</tbody>
			</table>
			<p class="submit">
				<?php wp_nonce_field( 'tix_export' ); ?>
				<input type="hidden" name="tix_export_submit" value="1" />
				<input type="submit" class="button-primary" value="<?php esc_attr_e( 'Export', 'camptix' ); ?>" />
			</p>
		</form>
		<?php
	}

	/**
	 * Fired at almost admin_init, used to serve the export download file.
	 * @see menu_tools_export()
	 */
	function export_admin_init() {
		global $post;

		if ( ! current_user_can( $this->caps['manage_tools'] ) || 'export' != $this->get_tools_section() )
			return;

		if ( isset( $_POST['tix_export_submit'], $_POST['tix_export_to'] ) && check_admin_referer( 'tix_export' ) ) {

			$format = strtolower( trim( $_POST['tix_export_to'] ) );
			if ( ! in_array( $format, array( 'xml', 'csv' ) ) ) {
				add_settings_error( 'tix', 'error', __( 'Format not supported.', 'camptix' ), 'error' );
				return;
			}

			$content_types = array(
				'xml' => 'text/xml',
				'csv' => 'text/csv',
			);

			$filename = sprintf( 'camptix-export-%s.%s', date( 'Y-m-d' ), $format );

			header( 'Content-Type: ' . $content_types[$format] );
			header( 'Content-Disposition: attachment; filename="' . $filename . '"' );
			header( "Cache-control: private" );
			header( 'Pragma: private' );
			header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" );

			echo $this->generate_attendee_report( $format );
			die();
		}
	}

	/*
	 * Generate and return the raw attendee report contents
	 */
	function generate_attendee_report( $format ) {
		$time_start = microtime( true );
		$questions = $this->get_all_questions();

		$columns = array(
			'id' => __( 'Attendee ID', 'camptix' ),
			'ticket' => __( 'Ticket Type', 'camptix' ),
			'first_name' => __( 'First Name', 'camptix' ),
			'last_name' => __( 'Last Name', 'camptix' ),
			'email' => __( 'E-mail Address', 'camptix' ),
			'date' => __( 'Purchase date', 'camptix' ),
			'modified_date' => __( 'Last Modified date', 'camptix' ),
			'status' => __( 'Status', 'camptix' ),
			'txn_id' => __( 'Transaction ID', 'camptix' ),
			'coupon' => __( 'Coupon', 'camptix' ),
			'buyer_name' => __( 'Ticket Buyer Name', 'camptix' ),
			'buyer_email' => __( 'Ticket Buyer E-mail Address', 'camptix' ),
			'payment_method' => __( 'Payment Method', 'camptix' ),
		);
		foreach ( $questions as $question )
			$columns[ 'tix_q_' . $question->ID ] = apply_filters( 'the_title', $question->post_title );

		$extra_columns = apply_filters( 'camptix_attendee_report_extra_columns', array() );
		$columns = array_merge( $columns, $extra_columns );

		if ( 'csv' == $format ) {
			ob_start();
			$report = fopen( "php://output", 'w' );
			fputcsv( $report, self::esc_csv( $columns ) );
		}

		if ( 'xml' == $format )
			$report = '<?xml version="1.0" encoding="UTF-8"?>' . PHP_EOL . '<attendees>' . PHP_EOL;

		$paged = 1;
		while ( $attendees = get_posts( array(
			'post_type' => 'tix_attendee',
			'post_status' => array( 'publish', 'pending' ),
			'posts_per_page' => 200,
			'paged' => $paged++,
			'orderby' => 'ID',
			'order' => 'ASC',
			'cache_results' => false,
		) ) ) {

			$attendee_ids = array();
			foreach ( $attendees as $attendee )
				$attendee_ids[] = $attendee->ID;

			/**
			 * Magic here, to by-pass object caching. See Revenue report for more info.
			 */
			$this->filter_post_meta = $this->prepare_metadata_for( $attendee_ids );
			unset( $attendee_ids, $attendee );

			foreach ( $attendees as $attendee ) {
				$attendee_id = $attendee->ID;

				$buyer = get_posts( array(
					'post_type'      => 'tix_attendee',
					'post_status'    => array( 'publish', 'pending' ),
					'posts_per_page' => 1,
					'orderby'        => 'ID',
					'order'          => 'ASC',

					'meta_query'     => array(
						array(
							'key'    => 'tix_access_token',
							'value'  => get_post_meta( $attendee->ID, 'tix_access_token', true ),
						),
					),
				) );

				$line = array(
					'id' => $attendee_id,
					'ticket' => $this->get_ticket_title( intval( get_post_meta( $attendee_id, 'tix_ticket_id', true ) ) ),
					'first_name' => get_post_meta( $attendee_id, 'tix_first_name', true ),
					'last_name' => get_post_meta( $attendee_id, 'tix_last_name', true ),
					'email' => get_post_meta( $attendee_id, 'tix_email', true ),
					'date' => mysql2date( 'Y-m-d g:ia', $attendee->post_date ),
					'modified_date' => mysql2date( 'Y-m-d g:ia', $attendee->post_modified ),
					'status' => ucfirst( $attendee->post_status ),
					'txn_id' => get_post_meta( $attendee_id, 'tix_transaction_id', true ),
					'coupon' => get_post_meta( $attendee_id, 'tix_coupon', true ),
					'buyer_name' => empty( $buyer[0]->post_title ) ? '' : $buyer[0]->post_title,
					'buyer_email' => get_post_meta( $attendee_id, 'tix_receipt_email', true ),
					'payment_method' => $this->get_payment_method_name_by_attendee_id( $attendee_id ),
				);

				$answers = (array) get_post_meta( $attendee_id, 'tix_questions', true );

				foreach ( $questions as $question ) {

					// For multiple checkboxes
					if ( isset( $answers[ $question->ID ] ) && is_array( $answers[ $question->ID ] ) )
						$answers[ $question->ID ] = implode( ', ', (array) $answers[ $question->ID ] );

					$line[ 'tix_q_' . $question->ID ] = ( isset( $answers[ $question->ID ] ) ) ? $answers[ $question->ID ] : '';
				}

				foreach ( $extra_columns as $index => $label ) {
					$line[ $index ] = apply_filters( 'camptix_attendee_report_column_value_' . $index, '', $attendee );
					$line[ $index ] = apply_filters( 'camptix_attendee_report_column_value', $line[ $index ], $index, $attendee );
				}

				// Make sure every column is printed.
				$clean_line = array();
				foreach ( $columns as $key => $caption )
					$clean_line[$key] = isset( $line[$key] ) ? $line[$key] : '';

				if ( 'csv' == $format ) {
					fputcsv( $report, self::esc_csv( $clean_line ) );
				}

				if ( 'xml' == $format ) {
					$report .= "\t<attendee>" . PHP_EOL;
					foreach ( $clean_line as $tag => $value ) {
						$report .= sprintf( "\t\t<%s>%s</%s>" . PHP_EOL, $tag, esc_html( $value ), $tag );
					}
					$report .= "\t</attendee>" . PHP_EOL;
				}

				// The following was commented out because object caching was disabled with filter_post_meta.
				// Delete caches individually rather than clean_post_cache( $attendee_id ),
				// prevents querying for children posts, saves a bunch of queries :)
				// wp_cache_delete( $attendee_id, 'posts' );
				// wp_cache_delete( $attendee_id, 'post_meta' );
			}

			/**
			 * Don't forget to clear up the used meta sort-of cache.
			 */
			$this->filter_post_meta = false;
		}

		if ( 'csv' == $format ) {
			fclose( $report );
			$report = ob_get_clean();
		}

		if ( 'xml' == $format )
			$report .= '</attendees>';

		$this->log( sprintf( 'Finished %s data export in %s seconds.', $format, microtime(true) - $time_start ) );
		return $report;
	}

	/**
	 * Escape a string to be used in a CSV context
	 *
	 * Malicious input can inject formulas into CSV files, opening up the possibility for phishing attacks,
	 * information disclosure, and arbitrary command execution.
	 *
	 * @see http://www.contextis.com/resources/blog/comma-separated-vulnerabilities/
	 * @see https://hackerone.com/reports/72785
	 *
	 * @param array $fields
	 *
	 * @return array
	 */
	public static function esc_csv( $fields ) {
		$active_content_triggers = array( '=', '+', '-', '@' );

		/*
		 * Formulas that follow all common delimiters need to be escaped, because the user may choose any delimiter
		 * when importing a file into their spreadsheet program. Different delimiters are also used as the default
		 * in different locales. For example, Windows + Russian uses `;` as the delimiter, rather than a `,`.
		 *
		 * The file encoding can also effect the behavior; e.g., opening/importing as UTF-8 will enable newline
		 * characters as delimiters.
		 */
		$delimiters = array(
			',', ';', ':', '|', '^',
			"\n", "\t", " "
		);

		foreach( $fields as $index => $field ) {
			// Escape trigger characters at the start of a new field
			$first_cell_character = mb_substr( $field, 0, 1 );
			$is_trigger_character = in_array( $first_cell_character, $active_content_triggers, true );
			$is_delimiter         = in_array( $first_cell_character, $delimiters,              true );

			if ( $is_trigger_character || $is_delimiter ) {
				$field = "'" . $field;
			}

			// Escape trigger characters that follow delimiters
			foreach ( $delimiters as $delimiter ) {
				foreach ( $active_content_triggers as $trigger ) {
					$field = str_replace( $delimiter . $trigger, $delimiter . "'" . $trigger, $field );
				}
			}

			$fields[ $index ] = $field;
		}

		return $fields;
	}

	/**
	 * Notify tools menu, allows to create, preview and send an e-mail
	 * to all attendees. See also: notify shortcodes.
	 */
	function menu_tools_notify() {
		global $post, $shortcode_tags;

		// Use this array to store existing form data.
		$form_data = array(
			'subject' => '',
			'body' => '',
			'tickets' => array(),
		);

		if ( isset( $_POST['tix_notify_attendees'] ) && check_admin_referer( 'tix_notify_attendees' ) ) {
			$errors = array();
			$_POST = wp_unslash( $_POST );

			// Error handling.
			if ( empty( $_POST['tix_notify_subject'] ) )
				$errors[] = __( 'Please enter a subject line.', 'camptix' );

			if ( empty( $_POST['tix_notify_body'] ) )
				$errors[] = __( 'Please enter the e-mail body.', 'camptix' );

			if ( empty( $_POST['tix-notify-segment-query'] ) )
				$errors[] = __( 'At least one segment condition must be defined.', 'camptix' );

			if ( empty( $_POST['tix-notify-segment-match'] ) )
				$error[] = __( 'Please select a segment match mode' );

			$conditions = json_decode( $_POST['tix-notify-segment-query'], true );
			if ( ! is_array( $conditions ) || count( $conditions ) < 1 )
				$errors[] = __( 'At least one segment condition must be defined.', 'camptix' );

			$recipients = $this->get_segment( $_POST['tix-notify-segment-match'], $conditions );

			if ( count( $recipients ) < 1 ) {
				$errors[] = __( 'The selected segment does not match any recipients. Please try a again.', 'camptix' );
			}

			// If everything went well.
			if ( count( $errors ) == 0 && isset( $_POST['tix_notify_submit'] ) && $_POST['tix_notify_submit'] ) {
				$subject = sanitize_text_field( wp_kses_post( $_POST['tix_notify_subject'] ) );
				$body = wp_kses_post( $_POST['tix_notify_body'] );

				// Create a new e-mail job.
				$email_id = wp_insert_post( array(
					'post_type' => 'tix_email',
					'post_status' => 'pending',
					'post_title' => $subject,
					'post_content' => $body,
				) );

				// Add recipients as post meta.
				if ( $email_id ) {
					add_settings_error( 'camptix', 'none', sprintf( __( 'Your e-mail job has been queued for %s recipients.', 'camptix' ), count( $recipients ) ), 'updated' );
					$this->log( sprintf( 'Created e-mail job with %s recipients.', count( $recipients ) ), $email_id, null, 'notify' );

					foreach ( $recipients as $recipient_id )
						add_post_meta( $email_id, 'tix_email_recipient_id', $recipient_id );

					update_post_meta( $email_id, 'tix_email_recipients_backup', $recipients ); // for logging purposes
					unset( $recipients );
				}
			} else { // errors or preview

				if ( count( $errors ) > 0 ) {
					foreach ( $errors as $error ) {
						add_settings_error( 'camptix', false, $error );
					}
				} elseif ( ! empty( $_POST['tix_notify_preview'] ) ) {
					$notify_overview = apply_filters( 'camptix_notify_overview', sprintf( __( 'Your segment matched %s recipients.', 'camptix' ), count( $recipients ) ), $recipients, $conditions);

					add_settings_error( 'camptix', 'none', $notify_overview, 'updated' );
				}

				// Keep form data.
				$form_data['subject'] = wp_kses_post( $_POST['tix_notify_subject'] );
				$form_data['body'] = wp_kses_post( $_POST['tix_notify_body'] );
				if ( isset( $_POST['tix_notify_tickets'] ) )
					$form_data['tickets'] = array_map( 'absint', (array) $_POST['tix_notify_tickets'] );
			}
		}

		// Remove all standard shortcodes.
		$this->removed_shortcodes = $shortcode_tags;
		remove_all_shortcodes();

		$tickets_query = new WP_Query( array(
			'post_type' => 'tix_ticket',
			'post_status' => 'any',
			'posts_per_page' => -1,
		) );

		do_action( 'camptix_init_notify_shortcodes' );
		?>
		<?php settings_errors( 'camptix' ); ?>

		<form method="post" action="<?php echo esc_url( add_query_arg( 'tix_notify_attendees', 1 ) ); ?>">
			<table class="form-table">
				<tbody>
					<tr>
						<th scope="row"><?php _e( 'To', 'camptix' ); ?></th>
						<td>
							<div class="tix-notify-segment">
								<input type="hidden" id="tix-notify-segment-query" name="tix-notify-segment-query" value="" />

								<div class="tix-match">
									<?php
										$match = ! empty( $_POST['tix-notify-segment-match'] ) ? $_POST['tix-notify-segment-match'] : 'OR';
									?>
									<?php printf( _x( 'Attendees matching %s of the following:', 'Placeholder is all/any', 'camptix' ),
										'<select name="tix-notify-segment-match">
											<option value="AND" ' . selected( $match, 'AND', false ) . '>' .
												_x( 'all', 'Attendees matching X of the following', 'camptix' ) . '</option>
											<option value="OR" ' . selected( $match, 'OR', false ) . '>' .
												_x( 'any', 'Attendees matching X of the following', 'camptix' ) . '</option>
										</select>' ); ?>
								</div>

								<div class="tix-segments">
								</div>

								<div class="tix-add-segment-condition">
									<a href="#"><?php _e( 'Add Condition &rarr;', 'camptix' ); ?></a>
								</div>

								<!--<p><a href="#" class="button"><?php _e( 'Test Segment' ); ?></a></p>-->
							</div>
						</td>
					</tr>
					<tr>
						<th scope="row"><?php _e( 'Subject', 'camptix' ); ?></th>
						<td>
							<input type="text" name="tix_notify_subject" value="<?php echo esc_attr( $form_data['subject'] ); ?>" class="large-text" />
						</td>
					</tr>
					<tr>
						<th scope="row"><?php _e( 'Message', 'camptix' ); ?></th>
						<td>
							<textarea rows="10" name="tix_notify_body" id="tix-notify-body" class="large-text"><?php echo esc_textarea( $form_data['body'] ); ?></textarea><br />
							<?php if ( ! empty( $shortcode_tags ) ) : ?>
							<p class=""><?php _e( 'You can use the following shortcodes:', 'camptix' ); ?>
								<?php foreach ( $shortcode_tags as $key => $tag ) : ?>
								<a href="#" class="tix-notify-shortcode"><code>[<?php echo esc_html( $key ); ?>]</code></a>
								<?php endforeach; ?>
							</p>
							<?php endif; ?>

							<?php if ( self::html_mail_enabled() ) : ?>
								<p>
									<?php _e( 'You can use the following HTML tags:', 'camptix' ); ?>
									<?php echo esc_html( self::get_allowed_html_mail_tags( 'display' ) ); ?>
								</p>
							<?php endif; ?>
						</td>
					</tr>
					<?php if ( isset( $_POST['tix_notify_preview'], $form_data ) ) : ?>
					<?php
						$attendees_ids = get_posts( array(
							'post_type' => 'tix_attendee',
							'post_status' => array( 'publish' ),
							'posts_per_page' => 1,
							'orderby' => 'rand',
							'fields' => 'ids',
						) );

						if ( $attendees_ids )
							$this->tmp( 'attendee_id', array_shift( $attendees_ids ) );

						$subject = do_shortcode( $form_data['subject'] );
						$content = do_shortcode( $form_data['body'] );

						$this->tmp( 'attendee_id', false );
					?>
					<tr>
						<th scope="row">Preview</th>
						<td>
							<div id="tix-notify-preview">
								<p><strong><?php echo esc_html( $subject ); ?></strong></p>
								<div>
									<?php
										if ( $this->html_mail_enabled() ) {
											echo self::sanitize_format_html_message( $content );
										} else {
											echo nl2br( esc_html( $content ) );
										}
									?>
								</div>
							</div>
						</td>
					</tr>
					<?php endif; ?>
				</tbody>
			</table>
			<p class="submit">
				<?php wp_nonce_field( 'tix_notify_attendees' ); ?>
				<input type="hidden" name="tix_notify_attendees" value="1" />

				<div style="position: absolute; left: -9999px;">
					<?php /* Hit Preview, not Send, if the form is submitted with Enter. */ ?>
					<?php submit_button( __( 'Preview', 'camptix' ), 'button', 'tix_notify_preview', false ); ?>
				</div>
				<?php submit_button( __( 'Send E-mails', 'camptix' ), 'primary', 'tix_notify_submit', false ); ?>
				<?php submit_button( __( 'Preview', 'camptix' ), 'button', 'tix_notify_preview', false ); ?>
			</p>
		</form>

		<!-- Notify Segment Item -->
		<script type="text/template" id="camptix-tmpl-notify-segment-item">
			<div class="tix-segment">
				<a href="#" class="dashicons dashicons-dismiss tix-delete-segment-condition"></a>
				<div class="segment-field-wrap">
					<select class="segment-field">
						<# _.each( data.fields, function( field ) { #>
							<# var selected = field.option_value == data.model.field ? 'selected' : ''; #>
							<option value="{{ field.option_value }}" {{ selected }}>{{ field.caption }}</option>
						<# }); #>
					</select>
				</div>

				<div class="segment-op-wrap">
					<select class="segment-op">
						<# _.each( data.ops, function( op ) { #>
							<# var selected = op == data.model.op ? 'selected' : ''; #>
							<option value="{{ op }}" {{ selected }} >{{ op }}</option>
						<# }); #>
					</select>
				</div>

				<div class="segment-value-wrap">
					<# if ( data.type == 'select' ) { #>
					<select class="segment-value">
						<# _.each( data.values, function( value ) { #>
							<# var selected = value.value == data.model.value ? 'selected' : ''; #>
							<option value="{{ value.value }}" {{ selected }} >{{ value.caption }}</option>
						<# }); #>
					</select>
					<# } else if ( data.type == 'text' ) { #>
					<input type="text" class="segment-value regular-text" value="{{ data.model.value }}" />
					<# } #>
				</div>

				<div class="clear"></div>
			</div>
		</script>

		<script>
		(function($){
			$(document).trigger( 'load-notify-segments.camptix' );

			camptix.collections.segmentFields.add( new camptix.models.SegmentField({
				caption: 'Purchased ticket',
				option_value: 'ticket',
				type: 'select',
				ops: [ 'is', 'is not' ],
				values: <?php
					$values = array();
					while ( $tickets_query->have_posts() ) {
						$tickets_query->the_post();
						$values[] = array(
							'caption' => html_entity_decode( get_the_title() ),
							'value' => (string) get_the_ID(),
						);
					}

					echo json_encode( $values );
				?>
			}));

			camptix.collections.segmentFields.add( new camptix.models.SegmentField({
				caption: 'Purchase date',
				option_value: 'date',
				type: 'text',
				ops: [ 'before', 'after' ]
			}));

			<?php foreach ( $this->get_all_questions() as $question ) : ?>

				<?php
					// Segmenting supported by these types. only
					if ( ! in_array( get_post_meta( $question->ID, 'tix_type', true ), array( 'select', 'radio', 'checkbox', 'text' ) ) )
						continue;
				?>

				camptix.collections.segmentFields.add( new camptix.models.SegmentField({
					caption: '<?php echo esc_js( $question->post_title ); ?>',
					option_value: '<?php echo esc_js( sprintf( 'tix-question-%d', $question->ID ) ); ?>',

					<?php $type = get_post_meta( $question->ID, 'tix_type', true ); ?>
					<?php if ( in_array( $type, array( 'select', 'radio' ) ) ) : ?>

						type: 'select',
						ops: [ 'is', 'is not' ],
						values: <?php
							$values = array();
							foreach ( (array) get_post_meta( $question->ID, 'tix_values', true ) as $value ) {
								$values[] = array(
									'caption' => html_entity_decode( $value ),
									'value' => $value,
								);
							}

							echo json_encode( $values );
						?>,

					<?php elseif ( $type == 'checkbox' ) : ?>

						type: 'select',
						ops: [ 'is', 'is not' ],
						values: <?php
							$values = array( array( 'caption' => 'None', 'value' => -1 ) );
							$question_values = (array) get_post_meta( $question->ID, 'tix_values', true );

							if ( ! empty( $question_values ) ) {
								foreach ( (array) get_post_meta( $question->ID, 'tix_values', true ) as $value ) {
									$values[] = array(
										'caption' => html_entity_decode( $value ),
										'value' => $value,
									);
								}
							} else {
								$values[] = array(
									'caption' => __( 'Yes', 'camptix' ),
									'value' => 'Yes',
								);
							}

							echo json_encode( $values );
						?>,

					<?php elseif ( $type == 'text' ) : ?>

						type: 'text',
						ops: [ 'is', 'is not', 'contains', 'does not contain', 'starts with', 'does not start with' ],

					<?php endif; ?>

					noop: null
				}));

			<?php endforeach; ?>

			camptix.collections.segmentFields.add( new camptix.models.SegmentField({
				caption: 'Coupon code used',
				option_value: 'coupon',
				type: 'select',
				ops: [ 'is', 'is not' ],
				values: <?php
					$values = array();
					foreach ( $this->get_all_coupons() as $coupon ) {
						$values[] = array(
							'caption' => $coupon->post_title,
							'value' => (string) $coupon->ID,
						);
					}

					echo json_encode( $values );
				?>
			}));


			// Add POST'ed conditions.
			<?php if ( ! empty( $conditions ) ) : ?>
				<?php foreach ( $conditions as $condition ) : ?>
					camptix.collections.segments.add(
						new camptix.models.Segment(<?php echo json_encode( $condition ); ?>)
					);
				<?php endforeach; ?>
			<?php else : ?>
				camptix.collections.segments.add( new camptix.models.Segment() );
			<?php endif; ?>

		}(jQuery));
		</script>

		<?php

		// Bring back the original shortcodes.
		$shortcode_tags = $this->removed_shortcodes;
		$this->removed_shortcodes = array();

		$history_query = new WP_Query( array(
			'post_type' => 'tix_email',
			'post_status' => 'any',
			'posts_per_page' => -1,
			'order' => 'ASC',
		) );

		if ( $history_query->have_posts() ) {
			echo '<h3>' . __( 'History', 'camptix' ) . '</h3>';
			$rows = array();
			while ( $history_query->have_posts() ) {
				$history_query->the_post();
				$rows[] = array(
					__( 'Subject', 'camptix' ) => get_the_title(),
					__( 'Updated', 'camptix' ) => sprintf( __( '%1$s at %2$s', 'camptix' ), get_the_date(), get_the_time() ),
					__( 'Author', 'camptix' ) => get_the_author(),
					__( 'Status', 'camptix' ) => $post->post_status,
				);
			}
			$this->table( $rows, 'widefat tix-email-history' );
		}
	}

	/**
	 * Get a Segment of Attendee IDs based on $conditions.
	 *
	 * @param string $relation AND or OR.
	 * @param array $conditions An array of conditions, where each condition is also an array.
	 *
	 * @return array A list of attendee IDs.
	 */
	public function get_segment( $relation, $conditions ) {
		$segment = array();
		$empty_query = true;
		$post_query_segment = array();
		$post_query_conditions = array();

		$relation = strtolower( $relation );
		if ( ! in_array( $relation, array( 'and', 'or' ) ) )
			return $segment;

		$query = array(
			'post_type' => 'tix_attendee',
			'posts_per_page' => -1,
			'post_status' => array( 'publish' ),
			'fields' => 'ids',
			'orderby' => 'ID',
			'order' => 'ASC',
			'cache_results' => false,
			'meta_query' => array(
				'relation' => $relation,
			),
			'date_query' => array(),
		);

		foreach ( $conditions as $condition ) {
			if ( empty( $condition['field'] ) || empty( $condition['op'] ) || ! isset( $condition['value'] ) )
				continue;

			// Purchased ticket.
			if ( 'ticket' == $condition['field'] ) {
				$meta_query = array(
					'key' => 'tix_ticket_id',
					'value' => $condition['value'],
				);

				switch ( $condition['op'] ) {
					case 'is not':
						$meta_query['compare'] = '!=';
						break;

					case 'is':
					default:
						$meta_query['compare'] = '=';
						break;
				}

				$query['meta_query'][] = $meta_query;
				$empty_query = false;
				continue;
			}

			// Purchase date.
			if ( 'date' == $condition['field'] ) {
				switch ( $condition['op'] ) {
					case 'before':
						$query['date_query'][] = array( 'before' => $condition['value'] );
						break;
					case 'after':
						$query['date_query'][] = array( 'after' => $condition['value'] );
						break;
				}

				$empty_query = false;
				continue;
			}

			// Coupon code.
			if ( 'coupon' == $condition['field'] ) {
				$meta_query = array(
					'key' => 'tix_coupon_id',
					'value' => $condition['value'],
				);

				switch ( $condition['op'] ) {
					case 'is not':
						$meta_query['compare'] = '!=';
						break;

					case 'is':
					default:
						$meta_query['compare'] = '=';
						break;

				}

				$empty_query = false;
				$query['meta_query'][] = $meta_query;
				continue;
			}

			// Conditions to be applied after the query has executed.
			if ( preg_match( '#^tix-question-\d+$#', $condition['field'] ) ) {
				$post_query_conditions[] = $condition;
				continue;
			}
		}

		$post_query_segment = get_posts( $query );

		// If the initial query was not a generic "empty" query, and we have an "or" relation,
		// Then we can safely include anything that we got in the first results set, but should
		// also query all the remaining attendees to try and match additional post_query_conditions.

		if ( $relation == 'or' && ! $empty_query && ! empty( $post_query_conditions ) ) {
			unset( $query['meta_query'] );
			unset( $query['date_query'] );
			$query['post__not_in'] = $post_query_segment;

			$segment = $post_query_segment;
			$post_query_segment = get_posts( $query );
		}

		unset( $conditions );
		unset( $query );

		foreach ( $post_query_segment as $key => $attendee_id ) {
			$include = empty( $post_query_conditions );

			// These conditions further filter the query.
			foreach ( $post_query_conditions as $condition ) {
				if ( preg_match( '#^tix-question-(\d+)$#', $condition['field'], $matches ) ) {
					$question_id = $matches[1];
					$answers = get_post_meta( $attendee_id, 'tix_questions', true );
					$question = get_post( $question_id );
					$question_type = get_post_meta( $question->ID, 'tix_type', true );

					// Make sure the question is valid.
					if ( $question->post_type != 'tix_question' || $question->post_status != 'publish' ) {
						continue;
					}

					// Looking at a checkbox that's not checked.
					if ( $question_type == 'checkbox' && $condition['value'] == -1 && empty( $answers[ $question->ID ] ) ) {
						$answers[ $question->ID ] = array(-1);
					}

					// If the attendee was not asked this question, then they're not part of the segment.
					if ( ! isset( $answers[ $question->ID ] ) )
						continue 2;

					$answer = $answers[ $question->ID ];
					$maybe_include = false;

					if ( in_array( $question_type, array( 'select', 'checkbox', 'radio' ) ) ) {
						if ( ! is_array( $answer ) )
							$answer = array( $answer );

						$in_array = in_array( $condition['value'], $answer );
						$maybe_include = ( $condition['op'] == 'is' ) ? $in_array : ! $in_array;
					} elseif ( $question_type == 'text' ) {

						// Lowercase comparison.
						if ( function_exists( 'mb_strtolower' ) ) {
							$condition['value'] = mb_strtolower( $condition['value'] );
							$answer = mb_strtolower( $answer );
						} else {
							$condition['value'] = strtolower( $condition['value'] );
							$answer = strtolower( $answer );
						}

						switch ( $condition['op'] ) {
							case 'is':
								$maybe_include = $condition['value'] == $answer;
								break;
							case 'is not':
								$maybe_include = $condition['value'] != $answer;
								break;
							case 'contains':
								$maybe_include = ! empty( $condition['value'] ) && strpos( $answer, $condition['value'] ) !== false;
								break;
							case 'does not contain':
								$maybe_include = ! empty( $condition['value'] ) && strpos( $answer, $condition['value'] ) === false;
								break;
							case 'starts with':
								$maybe_include = ! empty( $condition['value'] ) && strpos( $answer, $condition['value'] ) === 0;
								break;
							case 'does not start with':
								$maybe_include = ! empty( $condition['value'] ) && strpos( $answer, $condition['value'] ) !== 0;
								break;
							default:
						}
					}

					// For 'or' relations a single 'true' is enough to
					// include the attendee in the segment.
					if ( $relation == 'or' && $maybe_include ) {
						$include = true;
						break;
					}

					// For 'and' relations a single 'false' is enough to
					// exclude the attendee, no need to look further.
					if ( $relation == 'and' && ! $maybe_include ) {
						$include = false;
						break;
					}

					if ( $relation == 'and' && $maybe_include ) {
						$include = true;
						continue;
					}
				}
			}

			if ( $include )
				$segment[] = $attendee_id;
		}

		return $segment;
	}

	function menu_tools_refund() {
		if ( ! current_user_can( $this->caps['refund_all'] ) || ! $this->options['refund_all_enabled'] )
			return;

		if ( get_option( 'camptix_doing_refunds', false ) )
			return $this->menu_tools_refund_busy();

		if ( ! $this->payment_modules_support_refund_all() )
			return $this->menu_tools_refund_unavailable();

		?>
		<form method="post" action="<?php echo esc_url( add_query_arg( 'tix_refund_all', 1 ) ); ?>">
			<table class="form-table">
				<tbody>
					<tr>
						<th scope="row"><?php _e( 'Refund all transactions', 'camptix' ); ?></th>
						<td>
							<label><input name="tix_refund_checkbox_1" value="1" type="checkbox" /> <?php _e( 'Refund all transactions', 'camptix' ); ?></label><br />
							<label><input name="tix_refund_checkbox_2" value="1" type="checkbox" /> <?php _e( 'Seriously, refund them all', 'camptix' ); ?></label><br />
							<label><input name="tix_refund_checkbox_3" value="1" type="checkbox" /> <?php _e( "I know what I'm doing, please refund", 'camptix' ); ?></label><br />
							<label><input name="tix_refund_checkbox_4" value="1" type="checkbox" /> <?php _e( 'I know this may result in money loss, refund anyway', 'camptix' ); ?></label><br />
							<label><input name="tix_refund_checkbox_5" value="1" type="checkbox" /> <?php _e( 'I will not blame Konstantin if something goes wrong', 'camptix' ); ?></label><br />
						</td>
					</tr>
				</tbody>
			</table>
			<p class="submit">
				<?php wp_nonce_field( 'tix_refund_all' ); ?>
				<input type="hidden" name="tix_refund_all_submit" value="1" />
				<input type="submit" class="button-primary" value="<?php esc_attr_e( 'Refund Transactions', 'camptix' ); ?>" />
			</p>
		</form>
		<?php
	}

	/**
	 * Runs before the page markup is printed so can add settings errors.
	 */
	function menu_tools_refund_admin_init() {
		if ( ! current_user_can( $this->caps['refund_all'] ) || 'refund' != $this->get_tools_section() )
			return;

		// Display results of completed refund-all job
		$total_results = get_option( 'camptix_refund_all_results' );
		if ( isset( $total_results['status'] ) && 'completed' == $total_results['status'] ) {
			add_settings_error(
				'camptix',
				'none',
				sprintf(
					__( 'CampTix has finished attempting to refund all transactions. The results were:<br /><br /> &bull;Succeeded: %s<br /> &bull;Failed: %s', 'camptix' ),
					$total_results['succeeded'],
					$total_results['failed']
				),
				'updated'
			);	// not using proper <p> and <ul> markup because settings_errors() forces the entire message inside a <p>, which would be invalid
			delete_option( 'camptix_refund_all_results' );
		}

		// Process form submission
		if ( ! isset( $_POST['tix_refund_all_submit'] ) )
			return;

		check_admin_referer( 'tix_refund_all' );

		$checkboxes = array(
			'tix_refund_checkbox_1',
			'tix_refund_checkbox_2',
			'tix_refund_checkbox_3',
			'tix_refund_checkbox_4',
			'tix_refund_checkbox_5',
		);

		foreach ( $checkboxes as $checkbox ) {
			if ( ! isset( $_POST[ $checkbox ] ) || $_POST[ $checkbox ] != '1' ) {
				add_settings_error( 'camptix', 'none', __( 'Looks like you have missed a checkbox or two. Try again!', 'camptix' ), 'error' );
				return;
			}
		}

		$current_user = wp_get_current_user();
		$this->log( sprintf( 'Setting all transactions to refund, thanks %s.', $current_user->user_login ), 0, null, 'refund' );
		update_option( 'camptix_doing_refunds', true );
		update_option( 'camptix_refund_all_results', array( 'status' => 'pending', 'succeeded' => 0, 'failed' => 0 ) );

		$count = 0;
		$paged = 1;
		while ( $attendees = get_posts( array(
			'post_type' => 'tix_attendee',
			'posts_per_page' => 200,
			'post_status' => array( 'publish' ),
			'paged' => $paged++,
			'orderby' => 'ID',
			'fields' => 'ids',
			'order' => 'ASC',
			'cache_results' => 'false',
		) ) ) {

			// Mark attendee for refund
			foreach ( $attendees as $attendee_id ) {
				update_post_meta( $attendee_id, 'tix_pending_refund', 1 );
				$this->log( sprintf( 'Attendee set to refund by %s', $current_user->user_login ), $attendee_id, null, 'refund' );
				$count++;
			}
		}

		add_settings_error( 'camptix', 'none', sprintf( __( 'A refund job has been queued for %d attendees.', 'camptix' ), $count ), 'updated' );
	}

	/**
	 * Runs on Refund tab if a refund job is in progress.
	 */
	function menu_tools_refund_busy() {
		$query = new WP_Query( array(
			'post_type' => 'tix_attendee',
			'posts_per_page' => 1,
			'post_status' => array( 'publish' ),
			'orderby' => 'ID',
			'order' => 'ASC',
			'meta_query' => array(
				array(
					'key' => 'tix_pending_refund',
					'compare' => '=',
					'value' => 1,
				),
			),
		) );
		$found_posts = $query->found_posts;
		?>
		<p><?php printf( __( 'A refund job is in progress, with %d attendees left in the queue. Next run in %d seconds.', 'camptix' ), $found_posts, wp_next_scheduled( 'tix_scheduled_every_ten_minutes' ) - time() ); ?></p>
		<?php
		// @todo sometimes the time returned is a negative value, then fixes next load
		// @todo still says refund job in progress every with 0 attendees left. then clears next run. probably b/c last batch doesn't check to see if it's the last one
	}

	/*
	 * Returns true if at least one of the enabled payment modules supports refunding all tickets
	 */
	function payment_modules_support_refund_all() {
		$supported = false;
		$payment_methods = $this->get_enabled_payment_methods();

		if ( $payment_methods ) {
			foreach ( $payment_methods as $key => $name ) {
				$method = $this->get_payment_method_by_id( $key );

				if ( $method && $method->supports_feature( 'refund-all' ) ) {
					$supported = true;
					break;
				}
			}
		}

		return $supported;
	}

	/**
	 * Runs on Refund tab if none of the current payment modules support refunding all tickets
	 */
	function menu_tools_refund_unavailable() {
		?>
		<p><?php echo __( 'None of the enabled payment modules support refunding all tickets.', 'camptix' ); ?></p>
		<?php
	}

	/**
	 * Runs by WP_Cron, refunds attendees set to refund.
	 */
	function process_refund_all() {
		if ( $this->options['archived'] )
			return;

		if ( ! get_option( 'camptix_doing_refunds', false ) )
			return;

		$total_results = get_option( 'camptix_refund_all_results' );
		$attendees = get_posts( array(
			'post_type' => 'tix_attendee',
			'posts_per_page' => 50,
			'post_status' => array( 'publish' ),
			'orderby' => 'ID',
			'order' => 'DESC',
			'meta_query' => array(
				array(
					'key' => 'tix_pending_refund',
					'compare' => '=',
					'value' => 1,
				),
			),
		) );

		if ( ! $attendees ) {
			$this->log( 'Refund all job complete.', 0, null, 'refund' );
			$total_results['status'] = 'completed';
			delete_option( 'camptix_doing_refunds' );
		}

		foreach ( $attendees as $attendee ) {
			// If another cron instance has this, or same txn has been refunded.
			if ( ! get_post_meta( $attendee->ID, 'tix_pending_refund', true ) )
				continue;
			delete_post_meta( $attendee->ID, 'tix_pending_refund' );
			$transaction_id = get_post_meta( $attendee->ID, 'tix_transaction_id', true );
			if ( $transaction_id && ! empty( $transaction_id ) && trim( $transaction_id ) ) {
				// Related attendees have the same transaction id, we'll use this query to find them.
				$rel_attendees_query = array(
					'post_type' => 'tix_attendee',
					'posts_per_page' => 50,
					'post_status' => array( 'publish' ),
					'orderby' => 'ID',
					'order' => 'DESC',
					'post__not_in' => array( $attendee->ID ),
					'meta_query' => array(
						array(
							'key' => 'tix_pending_refund',
							'compare' => '=',
							'value' => 1,
						),
						array(
							'key' => 'tix_transaction_id',
							'compare' => '=',
							'value' => $transaction_id,
						),
					),
				);

				$payment_method = get_post_meta( $attendee->ID, 'tix_payment_method', true );
				$payment_method_obj = $this->get_payment_method_by_id( $payment_method );
				// Bail if a payment method does not exist.
				if ( ! $payment_method_obj ) {
					$this->log( "Couldn't instantiate payment module for attendee during refund-all batch.", $attendee->ID, null, 'refund' );
					$total_results['failed']++;
					continue;
				}

				// Attempt to process the refund transaction
				$payment_token = get_post_meta( $attendee->ID, 'tix_payment_token', true );
				if ( ! $payment_token ) {
					$this->log( "Invalid payment token for attendee during refund-all batch.", $attendee->ID, $payment_token, 'refund' );
					$total_results['failed']++;
					continue;
				}

				$result = $payment_method_obj->send_refund_request( $payment_token );

				if ( CampTix_Plugin::PAYMENT_STATUS_REFUNDED == $result['status'] ) {
					$this->log( sprintf( 'Refunded transaction %s.', $transaction_id ), $attendee->ID, $result, 'refund' );
					$attendee->post_status = 'refund';
					wp_update_post( $attendee );
					update_post_meta( $attendee->ID, 'tix_refund_transaction_id', $result['refund_transaction_id'] );
					update_post_meta( $attendee->ID, 'tix_refund_transaction_details', $result['refund_transaction_details'] );
					$total_results['succeeded']++;

					// Remove refund flag and set status to refunded for related attendees.
					while ( $rel_attendees = get_posts( $rel_attendees_query ) ) {
						foreach ( $rel_attendees as $rel_attendee ) {
							$this->log( sprintf( 'Refunded transaction %s.', $transaction_id ), $rel_attendee->ID, $result, 'refund' );
							delete_post_meta( $rel_attendee->ID, 'tix_pending_refund' );
							$rel_attendee->post_status = 'refund';
							wp_update_post( $rel_attendee );
							update_post_meta( $attendee->ID, 'tix_refund_transaction_id', $result['refund_transaction_id'] );
							update_post_meta( $attendee->ID, 'tix_refund_transaction_details', $result['refund_transaction_details'] );
							clean_post_cache( $rel_attendee->ID );
						}
					}
				} else {
					$this->log( sprintf( 'Could not refund %s.', $transaction_id ), $attendee->ID, $result, 'refund' );
					$total_results['failed']++;

					// Let other attendees know they can not be refunded too.
					while ( $rel_attendees = get_posts( $rel_attendees_query ) ) {
						foreach ( $rel_attendees as $rel_attendee ) {
							$this->log( sprintf( 'Could not refund %s.', $transaction_id ), $rel_attendee->ID, $result, 'refund' );
							delete_post_meta( $rel_attendee->ID, 'tix_pending_refund' );
							clean_post_cache( $rel_attendee->ID );
						}
					}
				}
			} else {
				$this->log( 'No transaction id for this attendee, not refunding.', $attendee->ID, null, 'refund' );
				$total_results['failed']++;
			}
		}

		update_option( 'camptix_refund_all_results', $total_results );
	}

	/**
	 * Adds various new metaboxes around the new post types.
	 */
	function add_meta_boxes() {
		add_meta_box( 'tix_ticket_options', __( 'Ticket Options', 'camptix' ), array( $this, 'metabox_ticket_options' ), 'tix_ticket', 'side' );
		add_meta_box( 'tix_ticket_availability', __( 'Availability', 'camptix' ), array( $this, 'metabox_ticket_availability' ), 'tix_ticket', 'side' );
		add_meta_box( 'tix_ticket_questions', __( 'Questions', 'camptix' ), array( $this, 'metabox_ticket_questions' ), 'tix_ticket' );

		if ( $this->options['reservations_enabled'] )
			add_meta_box( 'tix_ticket_reservations', __( 'Reservations', 'camptix' ), array( $this, 'metabox_ticket_reservations' ), 'tix_ticket' );

		add_meta_box( 'tix_coupon_options', __( 'Coupon Options', 'camptix' ), array( $this, 'metabox_coupon_options' ), 'tix_coupon', 'side' );
		add_meta_box( 'tix_coupon_availability', __( 'Availability', 'camptix' ), array( $this, 'metabox_coupon_availability' ), 'tix_coupon', 'side' );

		add_meta_box( 'tix_attendee_info', __( 'Attendee Information', 'camptix' ), array( $this, 'metabox_attendee_info' ), 'tix_attendee', 'normal' );

		add_meta_box( 'tix_attendee_submitdiv', __( 'Publish', 'camptix' ), array( $this, 'metabox_attendee_submitdiv' ), 'tix_attendee', 'side' );
		remove_meta_box( 'submitdiv', 'tix_attendee', 'side' );

		do_action( 'camptix_add_meta_boxes' );
	}

	function metabox_attendee_submitdiv() {
			global $action, $post;

			$post_type = $post->post_type;
			$post_type_object = get_post_type_object( $post_type );
			$post_status_object = get_post_status_object( $post->post_status );
			$can_publish = current_user_can( $post_type_object->cap->publish_posts );
			$email = get_post_meta( $post->ID, 'tix_email', true );
		?>
		<div class="submitbox" id="submitpost">

			<div id="minor-publishing">
				<div style="display:none;">
				<?php submit_button( __( 'Save', 'camptix' ), 'button', 'save' ); ?>
				</div>

				<div id="misc-publishing-actions">
					<div class="misc-pub-section">
						<div style="text-align: center;">
						<?php echo get_avatar( $email, 100 ); ?>
						</div>
					</div>

					<div class="misc-pub-section">
						<label for="post_status"><?php _e('Status:') ?></label>
						<span id="post-status-display">
							<?php if ( $post_status_object ) : ?>
							<?php echo esc_html( $post_status_object->label ); ?>
							<?php else: ?>
								<?php _e( 'Unknown status', 'camptix' ); ?>
							<?php endif; ?>
						</span>
					</div>

					<?php
					$datef = __( 'M j, Y @ G:i' );
					if ( 0 != $post->ID ) {
						$stamp = __( 'Created: <b>%1$s</b>', 'camptix' );
						$date = date_i18n( $datef, strtotime( $post->post_date ) );
					} else {
						$stamp = __( 'Publish <b>immediately</b>', 'camptix' );
						$date = date_i18n( $datef, strtotime( current_time('mysql') ) );
					}
					?>

					<?php if ( $can_publish ) : ?>
					<div class="misc-pub-section curtime">
						<span id="timestamp"><?php printf( $stamp, $date ); ?></span>
					</div>
					<?php endif; // $can_publish ?>

					<div class="misc-pub-section">
						<?php
							$edit_token = get_post_meta( $post->ID, 'tix_edit_token', true );
							$edit_link = $this->get_edit_attendee_link( $post->ID, $edit_token );
						?>
						<span><a href="<?php echo esc_url( $edit_link ); ?>"><?php _e( 'Edit Attendee Info', 'camptix' ); ?></a></span>
					</div>

					<div class="misc-pub-section">
						<div class="tix-pub-section-item">
							<input id="tix_privacy_<?php esc_attr( $post->ID ); ?>" name="tix_privacy" type="checkbox" <?php checked( get_post_meta( $post->ID, 'tix_privacy', true ), 'private' ); ?> />
							<label for="tix_privacy_<?php esc_attr( $post->ID ); ?>"><?php _e( 'Hide from public attendees list', 'camptix' ); ?></label>
						</div>

						<?php do_action( 'camptix_attendee_submitdiv_misc', $post ); ?>
					</div>

				</div><!-- #misc-publishing-actions -->
				<div class="clear"></div>
			</div><!-- #minor-publishing -->

			<div id="major-publishing-actions">
				<div id="delete-action">
				<?php
				if ( current_user_can( 'delete_post', $post->ID ) ) {
					if ( !EMPTY_TRASH_DAYS )
						$delete_text = __( 'Delete Permanently', 'camptix' );
					else
						$delete_text = __( 'Move to Trash', 'camptix' );
					?>
				<a class="submitdelete deletion" href="<?php echo get_delete_post_link( $post->ID ); ?>"><?php echo esc_html( $delete_text ); ?></a><?php
				} ?>
				</div>

				<div id="publishing-action">
					<?php submit_button( __( 'Save Attendee', 'camptix' ), 'primary', 'save', false, array( 'tabindex' => '5', 'accesskey' => 'p' ) ); ?>
				</div>
				<div class="clear"></div>
			</div>
		</div><!-- #submitpost -->
		<?php
	}

	/**
	 * Metabox callback for ticket options.
	 */
	function metabox_ticket_options() {
		$reserved = 0;
		$reservations = $this->get_reservations( get_the_ID() );
		foreach ( $reservations as $reservation_token => $reservation )
			$reserved += $reservation['quantity'] - $this->get_purchased_tickets_count( get_the_ID(), $reservation_token );

		$purchased = $this->get_purchased_tickets_count( get_the_ID() );
		$min_quantity = $reserved + $purchased;
		?>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'Price:', 'camptix' ); ?></span>
			<?php if ( $purchased <= 0 ) : ?>
			<input type="text" name="tix_price" class="small-text" value="<?php echo esc_attr( number_format( (float) get_post_meta( get_the_ID(), 'tix_price', true ), 2, '.', '' ) ); ?>" autocomplete="off" /> <?php echo esc_html( $this->options['currency'] ); ?>
			<?php else: ?>
			<span><?php echo esc_html( $this->append_currency( get_post_meta( get_the_ID(), 'tix_price', true ) ) ); ?></span><br />
			<p class="description" style="margin-top: 10px;"><?php _e( 'You can not change the price because one or more tickets have already been purchased.', 'camptix' ); ?></p>
			<?php endif; ?>
		</div>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'Quantity:', 'camptix' ); ?></span>
			<input type="number" min="<?php echo intval( $min_quantity ); ?>" name="tix_quantity" class="small-text" value="<?php echo esc_attr( intval( get_post_meta( get_the_ID(), 'tix_quantity', true ) ) ); ?>" autocomplete="off" />
			<?php if ( $purchased > 0 ) : ?>
			<p class="description" style="margin-top: 10px;"><?php _e( 'You can not set the quantity to less than the number of purchased tickets.', 'camptix' ); ?></p>
			<?php endif; ?>
		</div>
		<div class="clear"></div>
		<?php
	}

	/**
	 * Metabox callback for ticket availability.
	 */
	function metabox_ticket_availability() {
		$start = get_post_meta( get_the_ID(), 'tix_start', true );
		$end = get_post_meta( get_the_ID(), 'tix_end', true );
		?>
		<div class="misc-pub-section curtime">
			<span id="timestamp"><?php _e( 'Leave blank for auto-availability', 'camptix' ); ?></span>
		</div>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'Start:', 'camptix' ); ?></span>
			<input type="text" name="tix_start" id="tix-date-from" class="regular-text date" value="<?php echo esc_attr( $start ); ?>" />
		</div>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'End:', 'camptix' ); ?></span>
			<input type="text" name="tix_end" id="tix-date-to" class="regular-text date" value="<?php echo esc_attr( $end ); ?>" />
		</div>
		<div class="clear"></div>
		<?php
	}

	/**
	 * Returns all reservations for all available (published) tickets.
	 */
	function get_all_reservations() {
		$reservations = array();

		if ( ! $this->options['reservations_enabled'] )
			return $reservations;

		$tickets = get_posts( array(
			'post_type' => 'tix_ticket',
			'post_status' => 'publish',
			'posts_per_page' => -1,
		) );

		foreach ( $tickets as $ticket ) {
			$reservations = array_merge( $reservations, $this->get_reservations( $ticket->ID ) );
		}

		return $reservations;
	}

	/**
	 * Returns reservations for one single ticket by id.
	 */
	function get_reservations( $ticket_id ) {
		$reservations = array();

		if ( ! $this->options['reservations_enabled'] )
			return $reservations;

		$meta = (array) get_post_meta( $ticket_id, 'tix_reservation' );
		foreach ( $meta as $reservation )
			if ( isset( $reservation['token'] ) )
				$reservations[$reservation['token']] = $reservation;

		return $reservations;
	}

	/**
	 * Returns one single reservation by token.
	 */
	function get_reservation( $token ) {

		if ( ! $this->options['reservations_enabled'] )
			return false;

		$reservations = $this->get_all_reservations();
		if ( isset( $reservations[$token] ) )
			return $reservations[$token];

		return false;
	}

	/**
	 * Returns a URL, visiting which, one could use a reservation to purchase a ticket.
	 */
	function get_reservation_link( $id, $token ) {
		if ( ! $this->options['reservations_enabled'] )
			return;

		return add_query_arg( array(
			'tix_reservation_id' => urlencode( $id ),
			'tix_reservation_token' => $token,
		), $this->get_tickets_url() ) . '#tix';
	}

	/**
	 * Returns true, if a reservation is valid, and can be used to purchase a ticket.
	 */
	function is_reservation_valid_for_use( $token ) {
		$reservation = $this->get_reservation( $token );
		if ( ! $reservation )
			return false;

		$count = $this->get_purchased_tickets_count( $reservation['ticket_id'], $reservation['token'] );
		if ( $count < $reservation['quantity'] )
			return true;

		return false;
	}

	/**
	 * Renders the Reservations section in the edit ticket screen.
	 */
	function metabox_ticket_reservations() {
		$reservations = $this->get_reservations( get_the_ID() );
		?>

		<?php if ( $reservations ) : ?>
			<div id="postcustomstuff" class="tix-ticket-reservations">
			<table>
				<thead>
				<tr>
					<th><?php _e( 'Name', 'camptix' ); ?></th>
					<th><?php _e( 'Quantity', 'camptix' ); ?></th>
					<th><?php _e( 'Used', 'camptix' ); ?></th>
					<th><?php _e( 'Token', 'camptix' ); ?></th>
					<th><?php _e( 'Actions', 'camptix' ); ?></th>
				</tr>
				</thead>
				<tbody>
			<?php foreach ( $reservations as $reservation ) : ?>
				<tr>
					<td><span><?php echo esc_html( isset( $reservation['name'] ) ? $reservation['name'] : urldecode( $reservation['id'] ) ); ?></span></td>
					<td class="column-quantity"><span><?php echo intval( $reservation['quantity'] ); ?></span></td>
					<td class="column-used"><span><?php echo absint( $this->get_purchased_tickets_count( get_the_ID(), $reservation['token'] ) ); ?></span></td>
					<td class="column-token"><span><a href="<?php echo esc_url( $this->get_reservation_link( $reservation['id'], $reservation['token'] ) ); ?>">
						<?php echo esc_html( $reservation['token'] ); ?>
					</a></span></td>
					<td class="column-actions"><span>
						<input type="submit" class="button" name="tix_reservation_release[<?php echo esc_attr( $reservation['token'] ); ?>]" value="<?php esc_attr_e( 'Release', 'camptix' ); ?>" />
						<input type="submit" class="button" name="tix_reservation_cancel[<?php echo esc_attr( $reservation['token'] ); ?>]" value="<?php esc_attr_e( 'Cancel', 'camptix' ); ?>" />
					</span></td>
				</tr>
			<?php endforeach; ?>
				</tbody>
			</table>
			</div>
		<?php endif; ?>

		<p><strong><?php _e( 'Create a New Reservation:', 'camptix' ); ?></strong></p>
		<p>
			<input type="hidden" name="tix_doing_reservations" value="1" />
			<label><?php _e( 'Reservation Name', 'camptix' ); ?></label>
			<input type="text" name="tix_reservation_name" autocomplete="off" />
			<label><?php _e( 'Quantity', 'camptix' ); ?></label>
			<input type="text" name="tix_reservation_quantity" autocomplete="off" />
			<input type="submit" class="button-primary" value="<?php esc_attr_e( 'Create Reservation', 'camptix' ); ?>" />
		</p>
		<p class="description"><?php _e( "If you create a reservation with more quantity than available by the total ticket quantity, we'll bump the ticket quantity for you.", 'camptix' ); ?></p>
		<?php
	}

	/**
	 * Returns all available ticket types, you can
	 * extend this with filters and actions.
	 */
	function get_question_field_types() {
		return apply_filters( 'camptix_question_field_types', array(
			'text' => __( 'Text input', 'camptix' ),
			'textarea' => __( 'Text area', 'camptix' ),
			'select' => __( 'Dropdown select', 'camptix' ),
			'radio' => __( 'Radio select', 'camptix' ),
			'checkbox' => __( 'Checkbox', 'camptix' ),
		) );
	}

	/**
	 * Runs before question fields are printed, initialize controls actions here.
	 */
	function question_fields_init() {
		add_action( 'camptix_question_field_text', array( $this, 'question_field_text' ), 10, 2 );
		add_action( 'camptix_question_field_select', array( $this, 'question_field_select' ), 10, 3 );
		add_action( 'camptix_question_field_checkbox', array( $this, 'question_field_checkbox' ), 10, 3 );
		add_action( 'camptix_question_field_textarea', array( $this, 'question_field_textarea' ), 10, 2 );
		add_action( 'camptix_question_field_radio', array( $this, 'question_field_radio' ), 10, 3 );
	}

	/**
	 * A text input for a question.
	 */
	function question_field_text( $name, $value ) {
		?>
		<input name="<?php echo esc_attr( $name ); ?>" type="text" value="<?php echo esc_attr( $value ); ?>" />
		<?php
	}

	/**
	 * A drop-down select for a question.
	 */
	function question_field_select( $name, $user_value, $question ) {
		$values = get_post_meta( $question->ID, 'tix_values', true );
		?>
		<select name="<?php echo esc_attr( $name ); ?>" />
			<?php foreach ( (array) $values as $question_value ) : ?>
				<option <?php selected( $question_value, $user_value ); ?> value="<?php echo esc_attr( $question_value ); ?>"><?php echo esc_html( $question_value ); ?></option>
			<?php endforeach; ?>
		</select>
		<?php
	}

	/**
	 * A single or multiple checkbox for a question.
	 */
	function question_field_checkbox( $name, $user_value, $question ) {
		$values = get_post_meta( $question->ID, 'tix_values', true );
		$user_value_esc = array_map( 'esc_attr', (array) $user_value );
		?>
		<?php if ( $values ) : ?>
			<?php foreach ( (array) $values as $question_value ) : ?>
				<label>
					<input
						<?php checked( in_array( $question_value, array_merge( (array) $user_value, array_values( $user_value_esc ) ) ) ); ?>
						name="<?php echo esc_attr( $name ); ?>[<?php echo esc_attr( sanitize_title_with_dashes( $question_value ) ); ?>]"
						type="checkbox"
						value="<?php echo esc_attr( $question_value ); ?>"
					/>
					<?php echo esc_html( $question_value ); ?>
				</label><br />
			<?php endforeach; ?>
		<?php else : ?>
			<label><input <?php checked( $user_value, 'Yes' ); ?> name="<?php echo esc_attr( $name ); ?>" type="checkbox" value="Yes" /> <?php _e( 'Yes', 'camptix' ); ?></label>
		<?php endif; ?>
		<?php
	}

	/**
	 * A textarea input for questions.
	 */
	function question_field_textarea( $name, $value ) {
		?>
		<textarea name="<?php echo esc_attr( $name ); ?>"><?php echo esc_textarea( $value ); ?></textarea>
		<?php
	}

	/**
	 * A radio input for questions.
	 */
	function question_field_radio( $name, $user_value, $question ) {
		$values = get_post_meta( $question->ID, 'tix_values', true );
		?>
		<?php foreach ( (array) $values as $question_value ) : ?>
			<label><input <?php checked( $question_value, $user_value ); ?> name="<?php echo esc_attr( $name ); ?>" type="radio" value="<?php echo esc_attr( $question_value ); ?>" /> <?php echo esc_html( $question_value ); ?></label><br />
		<?php endforeach; ?>
		<?php
	}

	/**
	 * Metabox callback for ticket questions.
	 */
	function metabox_ticket_questions() {
		$types = $this->get_question_field_types();
		?>
		<div class="tix-ticket-questions">
			<div class="tix-ui-sortable" id="tix-questions-container">
				<div class="tix-item tix-item-required">
					<div>
						<input type="hidden" class="tix-field-order" value="0" />

						<div class="tix-item-inner-left">
							<span class="tix-field-type"><?php _e( 'Default', 'camptix' ); ?></span>
						</div>
						<div class="tix-item-inner-middle">
							<span class="tix-field-name"><?php _e( 'First name, last name and e-mail address', 'camptix' ); ?></span>
							<span class="tix-field-required-star">*</span>
							<span class="tix-field-values"></span>
						</div>
					</div>
				</div>
				<?php
					$questions = $this->get_sorted_questions( get_the_ID() );
					$i = 0;
				?>
			</div>

			<div class="tix-add-question" style="border-top: solid 1px white; background: #f9f9f9;">
				<span id="tix-add-question-action">
					<?php printf( __( 'Add a %1$s or an %2$s.', 'camptix' ),
									sprintf( '<a id="tix-add-question-new" style="font-weight: bold;" href="#">%s</a>', __( 'new question', 'camptix' ) ),
									sprintf( '<a id="tix-add-question-existing" style="font-weight: bold;" href="#">%s</a>', __( 'existing one', 'camptix' ) )
								);
					?>
				</span>

				<!-- Forms will go here -->
				<div id="tix-question-form">
				</div>
			</div>

			<script type="text/template" id="camptix-tmpl-new-question-form">
				<h4 class="title"><?php _e( 'Add a new question:', 'camptix' ); ?></h4>

				<table class="form-table">
					<tr valign="top">
						<th scope="row">
							<label><?php _e( 'Type', 'camptix' ); ?></label>
						</th>
						<td>
							<select id="tix-add-question-type" data-model-attribute="type">
								<?php foreach ( $types as $key => $label ) : ?>
								<option value="<?php echo esc_attr( $key ); ?>"><?php echo esc_html( $label ); ?></option>
								<?php endforeach; ?>
							</select>
						</td>
					</tr>
					<tr valign="top">
						<th scope="row">
							<label><?php _e( 'Question', 'camptix' ); ?></label>
						</th>
						<td>
							<input data-model-attribute="question" id="tix-add-question-name" class="regular-text" type="text" />
						</td>
					</tr>
					<tr valign="top" class="tix-add-question-values-row">
						<th scope="row">
							<label><?php _e( 'Values', 'camptix' ); ?></label>
						</th>
						<td>
							<input data-model-attribute="values" id="tix-add-question-values" class="regular-text" type="text" />
							<p class="description"><?php _e( 'Separate multiple values with a comma.', 'camptix' ); ?></p>
						</td>
					</tr>
					<tr valign="top">
						<th scope="row">
							<label><?php _e( 'Required', 'camptix' ); ?></label>
						</th>
						<td>
							<label><input data-model-attribute="required" data-model-attribute-type="checkbox" id="tix-add-question-required" type="checkbox" value="1" /> <?php _e( 'This field is required', 'camptix' ); ?></label>
						</td>
					</tr>
				</table>
				<p class="submit">
					<a href="#" class="button tix-add"><?php _e( 'Add Question', 'camptix' ); ?></a>
					<a href="#" class="button tix-cancel"><?php _e( 'Close', 'camptix' ); ?></a>
					<span class="description"><?php _e( 'Do not forget to update the ticket post to save changes.', 'camptix' ); ?></span>
				</p>
			</script>

			<!-- Add Existing Question Form Template -->
			<script type="text/template" id="camptix-tmpl-existing-question-form">
				<h4 class="title"><?php _e( 'Add an existing question:', 'camptix' ); ?></h4>

				<div class="categorydiv" id="tix-add-question-existing-list">
						<ul id="category-tabs" class="category-tabs">
							<li class="tabs"><?php _e( 'Available Questions', 'camptix' ); ?></li>
						</ul>

						<div class="tabs-panel">
							<ul id="categorychecklist" class="categorychecklist form-no-clear">
								<?php foreach ( $this->get_all_questions() as $question ) : ?>
								<li class="tix-existing-question" data-tix-question-id="<?php echo absint( $question->ID ); ?>">
									<label class="selectit">
										<input type="checkbox" class="tix-existing-checkbox" />
										<?php echo esc_html( apply_filters( 'the_title', $question->post_title ) ); ?>

										<input type="hidden" data-model-attribute="post_id" value="<?php echo absint( $question->ID ); ?>" />
										<input type="hidden" data-model-attribute="type" value="<?php echo esc_attr( get_post_meta( $question->ID, 'tix_type', true ) ); ?>" />
										<input type="hidden" data-model-attribute="question" value="<?php echo esc_attr( $question->post_title ); ?>" />
										<input type="hidden" data-model-attribute="required" value="<?php echo intval( get_post_meta( $question->ID, 'tix_required', true ) ); ?>" />
										<input type="hidden" data-model-attribute="values" value="<?php echo esc_attr( implode( ', ', (array) get_post_meta( $question->ID, 'tix_values', true ) ) ); ?>" />
									</label>
								</li>
								<?php endforeach; ?>
							</ul>
						</div>

				</div>

				<p class="submit">
					<a href="#" class="button tix-add"><?php _e( 'Add Selected', 'camptix' ); ?></a>
					<a href="#" class="button tix-cancel"><?php _e( 'Close', 'camptix' ); ?></a>
					<span class="description"><?php _e( 'Do not forget to update the ticket post to save changes.', 'camptix' ); ?></span>
				</p>
			</script>

			<!-- Question View Template -->
			<script type="text/template" id="camptix-tmpl-question">
				<div class="tix-item-inner-left">
					<span class="tix-field-type">{{ data.type }}</span>
				</div>
				<div class="tix-item-inner-right">
					<a href="#" class="tix-item-sort-handle" title="<?php esc_attr_e( 'Move', 'camptix' ); ?>" style="font-size: 8px; position: relative; top: 3px;"><?php esc_html_e( 'Move', 'camptix' ); ?></a>
					<a href="#tix-question-form" class="tix-item-edit" title="<?php esc_attr_e( 'Edit', 'camptix' ); ?>" style="font-size: 8px; position: relative; top: 3px;"><?php esc_html_e( 'Edit', 'camptix' ); ?></a>
					<a href="#" class="tix-item-delete" title="<?php esc_attr_e( 'Remove', 'camptix' ); ?>" style="font-size: 8px; position: relative; top: 3px;"><?php esc_attr_e( 'Remove', 'camptix' ); ?></a>
				</div>
				<div class="tix-item-inner-middle">
					<input type="hidden" name="tix_questions[]" value="{{ data.json }}" />

					<span class="tix-field-name">{{ data.question }}</span>
					<span class="tix-field-required-star">*</span>
					<span class="tix-field-values">{{ data.values }}</span>
				</div>
				</div>
			</script>

			<!-- Add Questions to the List -->
			<script>
			(function($){
			$(document).trigger( 'load-questions.camptix' );
			<?php foreach ( $questions as $question ) : ?>
				camptix.questions.add( new camptix.models.Question( {
					post_id: <?php echo esc_js( $question->ID ); ?>,
					type: '<?php echo esc_js( get_post_meta( $question->ID, 'tix_type', true ) ); ?>',
					question: '<?php echo esc_js( apply_filters( 'the_title', $question->post_title ) ); ?>',
					required: <?php echo esc_js( (int) (bool) get_post_meta( $question->ID, 'tix_required', true ) ); ?>,
					values: '<?php echo esc_js( implode( ', ', (array) get_post_meta( $question->ID, 'tix_values', true ) ) ); ?>'
				} ) );
			<?php endforeach; ?>
			}(jQuery));
			</script>
		</div>
		<?php
	}

	/**
	 * Metabox callback for coupon options.
	 */
	function metabox_coupon_options() {
		global $post, $wp_query;

		// We'll use this to restore post data.
		$original_post = $post;

		$discount_price = number_format( (float) get_post_meta( $post->ID, 'tix_discount_price', true ), 2, '.', '' );
		if ( $discount_price == 0 )
			$discount_price = '';

		$discount_percent = (int) get_post_meta( $post->ID, 'tix_discount_percent', true );
		if ( $discount_percent == 0 )
			$discount_percent = '';

		$quantity = intval( get_post_meta( $post->ID, 'tix_coupon_quantity', true ) );
		$used = intval( $this->get_used_coupons_count( $post->ID ) );
		$applies_to = (array) get_post_meta( $post->ID, 'tix_applies_to' );
		?>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'Discount:', 'camptix' ); ?></span>
			<?php if ( $used <= 0 ) : ?>
				<input type="text" name="tix_discount_price" class="small-text" style="width: 57px;" value="<?php echo esc_attr( $discount_price ); ?>" autocomplete="off" /> <?php echo esc_html( $this->options['currency'] ); ?><br />
				<span class="left">&nbsp;</span>
				<input type="number" min="0" name="tix_discount_percent" style="margin-top: 2px;" class="small-text" value="<?php echo esc_attr( $discount_percent ); ?>" autocomplete="off" /> %
			<?php else: ?>
				<span>
				<?php if ( $discount_price ) : ?>
					<?php echo esc_html( $this->append_currency( $discount_price ) ); ?>
				<?php else : ?>
					<?php echo esc_html( $discount_percent ); ?>%
				<?php endif; ?>
				</span>
				<p class="description" style="margin-top: 10px;"><?php _e( 'You can not change the discount because one or more tickets have already been purchased using this coupon.', 'camptix' ); ?></p>
			<?php endif; ?>
		</div>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'Quantity:', 'camptix' ); ?></span>
			<input type="number" min="<?php echo intval( $used ); ?>" name="tix_coupon_quantity" class="small-text" value="<?php echo esc_attr( $quantity ); ?>" autocomplete="off" />
			<?php if ( $used > 0 ) : ?>
				<p class="description" style="margin-top: 10px;"><?php _e( 'The quantity can not be less than the number of coupons already used.', 'camptix' ); ?></p>
			<?php endif; ?>
		</div>
		<div class="misc-pub-section tix-applies-to">
			<span class="left"><?php _e( 'Applies to:', 'camptix' ); ?></span>
			<div class="tix-checkbox-group">
				<label style="margin-bottom: 8px;"><a id="tix-applies-to-all" href="#"><?php _e( 'All', 'camptix' ); ?></a> / <a id="tix-applies-to-none" href="#"><?php _e( 'None', 'camptix' ); ?></a></label>
				<?php
					$q = new WP_Query( array(
						'post_type' => 'tix_ticket',
						'posts_per_page' => -1,
					) );
				?>
				<?php while ( $q->have_posts() ) : $q->the_post(); ?>
				<label><input <?php checked( in_array( $post->ID, $applies_to ) ); ?> type="checkbox" class="tix-applies-to-checkbox" name="tix_applies_to[]" value="<?php the_ID(); ?>" /> <?php echo sanitize_text_field( get_the_title() ); ?></label>
				<?php endwhile; ?>
				<input type="hidden" name="tix_applies_to_submit" value="1" />
			</div>
		</div>
		<div class="clear"></div>
		<?php

		// Restore the original post.
		$post = $original_post;
	}

	/**
	 * Metabox callback for coupon availability.
	 */
	function metabox_coupon_availability() {
		$start = get_post_meta( get_the_ID(), 'tix_coupon_start', true );
		$end = get_post_meta( get_the_ID(), 'tix_coupon_end', true );
		?>
		<div class="misc-pub-section curtime">
			<span id="timestamp"><?php _e( 'Leave blank for auto-availability', 'camptix' ); ?></span>
		</div>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'Start:', 'camptix' ); ?></span>
			<input type="text" name="tix_coupon_start" id="tix-date-from" class="regular-text date" value="<?php echo esc_attr( $start ); ?>" />
		</div>
		<div class="misc-pub-section">
			<span class="left"><?php _e( 'End:', 'camptix' ); ?></span>
			<input type="text" name="tix_coupon_end" id="tix-date-to" class="regular-text date" value="<?php echo esc_attr( $end ); ?>" />
		</div>
		<div class="clear"></div>
		<?php
	}

	/**
	 * Generates an attendee info table.
	 */
	function metabox_attendee_info() {
		global $post;
		$ticket_id = get_post_meta( $post->ID, 'tix_ticket_id', true );
		$ticket = get_post( $ticket_id );
		if ( ! $ticket ) return;

		$access_token   = get_post_meta( $post->ID, 'tix_access_token', true );
		$edit_token     = get_post_meta( $post->ID, 'tix_edit_token', true );
		$payment_method = $this->get_payment_method_name_by_attendee_id( $post->ID );

		$rows = array();

		// General
		$rows[] = array( __( 'General', 'camptix' ), '' );
		$rows[] = array( __( 'Status', 'camptix' ), esc_html( ucwords( $post->post_status ) ) );
		$rows[] = array( __( 'First Name', 'camptix' ), esc_html( get_post_meta( $post->ID, 'tix_first_name', true ) ) );
		$rows[] = array( __( 'Last Name', 'camptix' ), esc_html( get_post_meta( $post->ID, 'tix_last_name', true ) ) );
		$rows[] = array( __( 'E-mail', 'camptix' ), esc_html( get_post_meta( $post->ID, 'tix_email', true ) ) );
		$rows[] = array( __( 'Ticket', 'camptix' ), sprintf( '<a href="%s">%s</a>', get_edit_post_link( $ticket->ID ), $ticket->post_title ) );

		$rows = apply_filters( 'camptix_metabox_attendee_info_additional_rows', $rows, $post );

		$rows[] = array( __( 'Edit Token', 'camptix' ), sprintf( '<a href="%s">%s</a>', $this->get_edit_attendee_link( $post->ID, $edit_token ), $edit_token ) );
		$rows[] = array( __( 'Access Token', 'camptix' ), sprintf( '<a href="%s">%s</a>', $this->get_access_tickets_link( $access_token ), $access_token ) );

		// Transaction
		$rows[] = array( __( 'Transaction', 'camptix' ), '' );
		$rows[] = array( __( 'Payment Method', 'camptix' ), $payment_method );
		$txn_id = get_post_meta( $post->ID, 'tix_transaction_id', true );
		if ( $txn_id ) {
			$txn = get_post_meta( $post->ID, 'tix_transaction_details', true );
			$txn_url = get_admin_url( 0, '/edit.php?post_type=tix_attendee' );
			$txn_url = add_query_arg( 's', $txn_id, $txn_url );

			$rows[] = array( __( 'Transaction ID', 'camptix' ), sprintf( '<a href="%s">%s</a>', $txn_url, $txn_id ) );

			/*if ( isset( $txn['PAYMENTINFO_0_PENDINGREASON'] ) && $status == 'Pending' )
				$rows[] = array( __( 'Pending Reason', 'camptix' ), $txn['PAYMENTINFO_0_PENDINGREASON'] );
			if ( isset( $txn['PENDINGREASON'] ) && $status == 'Pending' )
				$rows[] = array( __( 'Pending Reason', 'camptix' ), $txn['PENDINGREASON'] );

			if ( isset( $txn['EMAIL'] ) )
				$rows[] = array( __( 'Buyer E-mail', 'camptix' ), esc_html( $txn['EMAIL'] ) );
			*/
		}

		$coupon_id = get_post_meta( $post->ID, 'tix_coupon_id', true );
		if ( $coupon_id ) {
			$coupon = get_post( $coupon_id );
			$rows[] = array( __( 'Coupon', 'camptix' ), sprintf( '<a href="%s">%s</a>', get_edit_post_link( $coupon->ID ), $coupon->post_title ) );
		}

		$rows[] = array( __( 'Order Total', 'camptix' ), $this->append_currency( get_post_meta( $post->ID, 'tix_order_total', true ) ) );

		// Reservation
		if ( $this->options['reservations_enabled'] ) {
			$reservation_id = get_post_meta( $post->ID, 'tix_reservation_id', true );
			$reservation_token = get_post_meta( $post->ID, 'tix_reservation_token', true );
			$reservation_url = get_admin_url( 0, '/edit.php?post_type=tix_attendee' );
			$reservation_url = add_query_arg( 's', urlencode( 'tix_reservation_id:' . $reservation_id ), $reservation_url );
			if ( $reservation_id && $reservation_token )
				$rows[] = array( __( 'Reservation', 'camptix' ), sprintf( '<a href="%s">%s</a>', esc_url( $reservation_url ), esc_html( $reservation_id ) ) );
		}

		// Questions
		$rows[] = array( __( 'Questions', 'camptix' ), '' );
		$questions = $this->get_sorted_questions( $ticket_id );
		$answers = get_post_meta( $post->ID, 'tix_questions', true );

		foreach ( $questions as $question ) {
			if ( isset( $answers[ $question->ID ] ) ) {
				$answer = $answers[ $question->ID ];
				if ( is_array( $answer ) )
					$answer = implode( ', ', $answer );
				$rows[] = array( esc_html( apply_filters( 'the_title', $question->post_title ) ), nl2br( esc_html( $answer ) ) );
			}
		}
		$this->table( $rows, 'tix-attendees-info' );
	}

	function create_reservation( $post_id, $name, $quantity ) {
		$id = sanitize_title_with_dashes( $name );
		$name = sanitize_text_field( $name );
		$quantity = intval( $quantity );
		$token = wp_generate_password( 16, $special_characters = false );
		$reservation = array(
			'id' => $id,
			'name' => $name,
			'quantity' => $quantity,
			'token' => $token,
			'ticket_id' => $post_id,
		);

		// Bump the ticket quantity if remaining less than we want to reserve.
		$remaining = $this->get_remaining_tickets( $post_id );
		if ( $remaining < $quantity ) {
			$ticket_quantity = intval( get_post_meta( $post_id, 'tix_quantity', true ) );
			$ticket_quantity += $quantity - $remaining;
			update_post_meta( $post_id, 'tix_quantity', $ticket_quantity );
		}

		add_post_meta( $post_id, 'tix_reservation', $reservation );
		$this->log( 'Created a new reservation.', $post_id, $reservation );
	}

	/**
	 * Saves ticket post meta, runs during save_post, which runs whenever
	 * the post type is saved, and not necessarily from the admin, which is why the nonce check.
	 */
	function save_ticket_post( $post_id ) {

		if ( ! is_admin() )
			return;

		if ( wp_is_post_revision( $post_id ) || 'tix_ticket' != get_post_type( $post_id ) )
			return;

		// Stuff here is submittable via POST only.
		if ( ! isset( $_POST['action'] ) || 'editpost' != $_POST['action'] )
			return;

		// Security check.
		$nonce_action = 'update-post_' . $post_id; // http://core.trac.wordpress.org/changeset/21504
		check_admin_referer( $nonce_action );

		if ( isset( $_POST['tix_price'] ) )
			update_post_meta( $post_id, 'tix_price', floatval( $_POST['tix_price'] ) );

		if ( isset( $_POST['tix_quantity'] ) )
			update_post_meta( $post_id, 'tix_quantity', intval( $_POST['tix_quantity'] ) );

		if ( isset( $_POST['tix_start'] ) ) {
			$_POST['tix_start'] = preg_match( '/^\d{4}\-\d{2}\-\d{2}$/', $_POST['tix_start'] ) ? $_POST['tix_start'] : '';
			update_post_meta( $post_id, 'tix_start', $_POST['tix_start'] );
		}

		if ( isset( $_POST['tix_end'] ) ) {
			$_POST['tix_end'] = preg_match( '/^\d{4}\-\d{2}\-\d{2}$/', $_POST['tix_end'] ) ? $_POST['tix_end'] : '';
			update_post_meta( $post_id, 'tix_end', $_POST['tix_end'] );
		}

		// Questions
		if ( isset( $_POST['tix_questions'] ) ) {

			// Convert from JSON
			$questions = stripslashes_deep( $_POST['tix_questions'] ) ;
			foreach ( $questions as $key => $question ) {
				$questions[ $key ] = (array) json_decode( $question );
			}

			usort( $questions, array( $this, 'usort_by_order' ) );

			delete_post_meta( $post_id, 'tix_question_id' );
			$order = array();

			foreach ( $questions as $question ) {
				if ( empty( $question['question'] ) || strlen( trim( $question['question'] ) ) < 1 )
					continue;

				if ( ! array_key_exists( $question['type'], $this->get_question_field_types() ) )
					continue;

				if ( ! empty( $question['values'] ) )
					$question_values = array_map( 'strip_tags', array_map( 'trim', explode( ',', $question['values'] ) ) );
				else
					$question_values = array();

				$clean_question = array(
					'post_id' => ( isset( $question['post_id'] ) ) ? absint( $question['post_id'] ) : false,
					'question' => wp_kses_post( $question['question'] ),
					'type' => $question['type'],
					'values' => $question_values,
					'required' => isset( $question['required'] ),
				);

				$clean_question['required'] = (bool) $question['required'];
				$question = $clean_question;
				unset( $clean_question );

				if ( ! $question['post_id'] ) {

					// Create a new question
					$question_id = wp_insert_post( array(
						'post_type' => 'tix_question',
						'post_status' => 'publish',
						'post_title' => $question['question'],
					) );

				} else {

					// Update question here
					$question_id = $question['post_id'];

					// Make sure we're editing a question.
					$question_post = get_post( $question_id );
					if ( $question_post->post_type != 'tix_question' || ! current_user_can( 'edit_post', $question_id ) )
						wp_die( 'Cheating?' );

					wp_update_post( array(
						'ID' => $question_id,
						'post_title' => $question['question'],
					) );
				}

				// Question meta
				update_post_meta( $question_id, 'tix_values', $question['values'] );
				update_post_meta( $question_id, 'tix_required', $question['required'] );
				update_post_meta( $question_id, 'tix_type', $question['type'] );

				// Don't add duplicate questions to the ticket/order.
				if ( in_array( $question_id, $order ) )
					continue;

				// Add question to this ticket
				add_post_meta( $post_id, 'tix_question_id', $question_id );

				// Add question to the order queue.
				$order[] = $question_id;
			}

			// Update with the order array.
			update_post_meta( $post_id, 'tix_questions_order', $order );
		}

		// Reservations
		if ( isset( $_POST['tix_doing_reservations'] ) && $this->options['reservations_enabled'] ) {

			// Make a new reservation
			if ( isset( $_POST['tix_reservation_name'], $_POST['tix_reservation_quantity'] )
				&& ! empty( $_POST['tix_reservation_name'] ) && intval( $_POST['tix_reservation_quantity'] ) > 0 ) {

				$this->create_reservation( $post_id, $_POST['tix_reservation_name'], $_POST['tix_reservation_quantity'] );
			}

			// Release a reservation.
			if ( isset( $_POST['tix_reservation_release'] ) && is_array( $_POST['tix_reservation_release'] ) ) {
				$release = $_POST['tix_reservation_release'];
				$release_token = array_shift( array_keys( $release ) );

				$reservations = $this->get_reservations( $post_id );
				if ( isset( $reservations[$release_token] ) ) {
					delete_post_meta( $post_id, 'tix_reservation', $reservations[$release_token] );
					$this->log( 'Released a reservation.', $post_id, $reservations[$release_token] );
				}
			}

			// Cancel a reservation: same as release, but decreases quantity.
			if ( isset( $_POST['tix_reservation_cancel'] ) && is_array( $_POST['tix_reservation_cancel'] ) ) {
				$cancel = $_POST['tix_reservation_cancel'];
				$cancel_token = array_shift( array_keys( $cancel ) );

				$reservations = $this->get_reservations( $post_id );
				if ( isset( $reservations[$cancel_token] ) ) {
					$reservation = $reservations[$cancel_token];
					$reservation_quantity = intval( $reservation['quantity'] );
					$reservation_used = $this->get_purchased_tickets_count( $post_id, $reservation['token'] );

					$ticket_quantity = intval( get_post_meta( $post_id, 'tix_quantity', true ) );
					$ticket_quantity -= ( $reservation_quantity - $reservation_used );
					update_post_meta( $post_id, 'tix_quantity', $ticket_quantity );

					delete_post_meta( $post_id, 'tix_reservation', $reservations[$cancel_token] );
					$this->log( 'Cancelled a reservation.', $post_id, $reservations[$cancel_token] );
				}
			}
		}

		$this->log( 'Saved ticket post with form data.', $post_id, $_POST );

		// Purge tickets page cache.
		$this->flush_tickets_page();
	}

	/**
	 * Saves attendee post meta, runs during save_post, also
	 * populates the attendee content field with data for search.
	 */
	function save_attendee_post( $post_id ) {
		if ( wp_is_post_revision( $post_id ) || 'tix_attendee' != get_post_type( $post_id ) )
			return;

		$nonce_action = 'update-post_' . $post_id;

		if ( ! empty( $_POST['_wpnonce'] ) && wp_verify_nonce( $_POST['_wpnonce'], $nonce_action ) ) {
			if ( isset( $_POST['tix_privacy'] ) && 'on' == $_POST['tix_privacy'] ) {
				update_post_meta( $post_id, 'tix_privacy', 'private' );
			} else {
				delete_post_meta( $post_id, 'tix_privacy' );
			}
		}

		$search_meta_fields = apply_filters( 'camptix_save_attendee_post_add_search_meta', array(
			'tix_first_name',
			'tix_last_name',
			'tix_email',
			'tix_transaction_id',
			'tix_questions',
			'tix_coupon',
			'tix_coupon_id',
			'tix_reservation_id',
			'tix_ticket_id',
			'tix_access_token',
			'tix_edit_token',
			'tix_payment_token',
			'tix_payment_method',
			'tix_privacy',
		) );

		$data = array( 'timestamp' => time() );

		foreach ( $search_meta_fields as $key )
			if ( get_post_meta( $post_id, $key, true ) )
				$data[ $key ] = sprintf( "%s:%s", $key, maybe_serialize( get_post_meta( $post_id, $key, true ) ) );

		$first_name = get_post_meta( $post_id, 'tix_first_name', true );
		$last_name = get_post_meta( $post_id, 'tix_last_name', true );

		// No infinite loops please.
		remove_action( 'save_post', array( $this, __FUNCTION__ ) );

		wp_update_post( array(
			'ID' => $post_id,
			'post_content' => maybe_serialize( $data ),
			'post_title' => $this->format_name_string( "%first% %last%", $first_name, $last_name ),
		) );

		// There might be others in need of processing.
		add_action( 'save_post', array( $this, __FUNCTION__ ) );

		if ( ! empty( $_POST['_wpnonce'] ) && wp_verify_nonce( $_POST['_wpnonce'], $nonce_action ) ) {
			$this->log( 'Saved attendee post with post data.', $post_id, $_POST );
		}
	}

	/**
	 * Saves coupon post meta, runs during save_post and not always in/by the admin.
	 */
	function save_coupon_post( $post_id ) {
		if ( ! is_admin() )
			return;

		if ( wp_is_post_revision( $post_id ) || 'tix_coupon' != get_post_type( $post_id ) )
			return;

		// Stuff here is submittable via POST only.
		if ( ! isset( $_POST['action'] ) || 'editpost' != $_POST['action'] )
			return;

		// Security check.
		$nonce_action = 'update-post_' . $post_id; // http://core.trac.wordpress.org/changeset/21504
		check_admin_referer( $nonce_action );

		if ( isset( $_POST['tix_discount_price'], $_POST['tix_discount_percent'] ) ) {
			$price = floatval( $_POST['tix_discount_price'] );
			$percent = intval( $_POST['tix_discount_percent'] );
			if ( $price > 0 ) { // a price discount has priority over % discount.
				update_post_meta( $post_id, 'tix_discount_price', $price );
				delete_post_meta( $post_id, 'tix_discount_percent' );
			} elseif ( $percent > 0 ) {
				update_post_meta( $post_id, 'tix_discount_percent', $percent );
				delete_post_meta( $post_id, 'tix_discount_price' );
			} else {
				delete_post_meta( $post_id, 'tix_discount_percent' );
				delete_post_meta( $post_id, 'tix_discount_price' );
			}
		}

		if ( isset( $_POST['tix_coupon_quantity'] ) ) {
			update_post_meta( $post_id, 'tix_coupon_quantity', intval( $_POST['tix_coupon_quantity'] ) );
		}

		if ( isset( $_POST['tix_applies_to_submit'] ) ) {
			delete_post_meta( $post_id, 'tix_applies_to' );

			if ( isset( $_POST['tix_applies_to'] ) )
				foreach ( (array) $_POST['tix_applies_to'] as $ticket_id )
					if ( $this->is_ticket_valid_for_display( $ticket_id ) )
						add_post_meta( $post_id, 'tix_applies_to', $ticket_id );
		}

		if ( isset( $_POST['tix_coupon_start'] ) ) {
			$_POST['tix_coupon_start'] = preg_match( '/^\d{4}\-\d{2}\-\d{2}$/', $_POST['tix_coupon_start'] ) ? $_POST['tix_coupon_start'] : '';
			update_post_meta( $post_id, 'tix_coupon_start', $_POST['tix_coupon_start'] );
		}

		if ( isset( $_POST['tix_coupon_end'] ) ) {
			$_POST['tix_coupon_end'] = preg_match( '/^\d{4}\-\d{2}\-\d{2}$/', $_POST['tix_coupon_end'] ) ? $_POST['tix_coupon_end'] : '';
			update_post_meta( $post_id, 'tix_coupon_end', $_POST['tix_coupon_end'] );
		}

		$this->log( 'Saved coupon post with form data.', $post_id, $_POST );
	}

	/**
	 * A bunch of magic is happening here.
	 */
	function template_redirect() {
		global $post;
		if ( ! is_page() || ! stristr( $post->post_content, '[camptix' ) )
			return;

		// Allow [camptix attr="value"] but not [camptix_attendees] etc.
		if ( ! preg_match( "#\\[camptix(\s[^\\]]+)?\\]#", $post->post_content, $matches ) )
			return;

		// Keep this in the case where we'd like to remove things around the shortcode.
		$this->shortcode_str = $matches[0];

		$this->error_flags = array();

		// Allow third-party forms to initiate a ticket purchase.
		if ( isset( $_REQUEST['tix_single_ticket_purchase'] ) ) {
			$_REQUEST['tix_tickets_selected'] = array( $_REQUEST['tix_single_ticket_purchase'] => 1 );
		}

		if ( isset( $_POST ) && ! empty( $_POST ) )
			$this->form_data = stripslashes_deep( $_POST );

		$this->tickets = array();
		$this->tickets_selected = array();
		$coupon_used_count = 0;
		$via_reservation = false;
		$max_tickets_per_order = apply_filters( 'camptix_max_tickets_per_order', 10 );

		if ( count( $this->get_enabled_payment_methods() ) < 1 )
			$this->error_flags['no_payment_methods'] = true;

		// Find the coupon.
		if ( isset( $_REQUEST['tix_coupon'] ) && ! empty( $_REQUEST['tix_coupon'] ) ) {
			$coupon = $this->get_coupon_by_code( $_REQUEST['tix_coupon'] );
			if ( $coupon && $this->is_coupon_valid_for_use( $coupon->ID ) ) {
				$coupon->tix_coupon_remaining = $this->get_remaining_coupons( $coupon->ID );
				$coupon->tix_discount_price = (float) get_post_meta( $coupon->ID, 'tix_discount_price', true );
				$coupon->tix_discount_percent = (int) get_post_meta( $coupon->ID, 'tix_discount_percent', true );
				$coupon->tix_applies_to = (array) get_post_meta( $coupon->ID, 'tix_applies_to' );
				$this->coupon = $coupon;
			} else {
				$this->error_flags['invalid_coupon'] = true;
			}
			unset( $coupon );
		}

		// Have we got a reservation?
		$this->maybe_set_reservation();
		if ( ! empty( $this->reservation['token'] ) ) {
			$via_reservation = $this->reservation['token'];
		}

		if ( ! $this->options['archived'] ) {
			$tickets = get_posts( array(
				'post_type' => 'tix_ticket',
				'post_status' => 'publish',
				'posts_per_page' => -1,
			) );
		} else {
			// No tickets for archived events.
			$tickets = array();
		}

		// Get the tickets.
		foreach ( $tickets as $ticket ) {
			$ticket->tix_price = (float) get_post_meta( $ticket->ID, 'tix_price', true );
			$ticket->tix_remaining = $this->get_remaining_tickets( $ticket->ID, $via_reservation );
			$ticket->tix_coupon_applied = false;
			$ticket->tix_discounted_price = $ticket->tix_price;

			// Check each ticket against coupon.
			if ( $this->coupon && in_array( $ticket->ID, $this->coupon->tix_applies_to ) ) {
				$ticket->tix_coupon_applied = true;
				$ticket->tix_discounted_text = '';

				if ( $this->coupon->tix_discount_price > 0 ) {
					$ticket->tix_discounted_price = number_format( $ticket->tix_price - $this->coupon->tix_discount_price, 2, '.', '' );
					$ticket->tix_discounted_text = sprintf( __( 'Discounted %s', 'camptix' ), $this->append_currency( $this->coupon->tix_discount_price ) );
				} elseif ( $this->coupon->tix_discount_percent > 0 ) {
					$ticket->tix_discounted_price = number_format( $ticket->tix_price - ( $ticket->tix_price * $this->coupon->tix_discount_percent / 100 ), 2, '.', '' );
					$ticket->tix_discounted_text = sprintf( __( 'Discounted %s%%', 'camptix' ), $this->coupon->tix_discount_percent );
				}

				if ( $ticket->tix_discounted_price < 0 )
					$ticket->tix_discounted_price = 0;
			}

			$this->tickets[$ticket->ID] = $ticket;
		}

		unset( $tickets, $ticket );

		// Populate selected tickets from $_POST!
		if ( isset( $_REQUEST['tix_tickets_selected'] ) ) {
			foreach ( $_REQUEST['tix_tickets_selected'] as $ticket_id => $count ) {
				if ( isset( $this->tickets[ $ticket_id ] ) && $count > 0 )
					$this->tickets_selected[ $ticket_id ] = intval( $count );
			}
		}

		// Make an order.
		$this->order = array( 'items' => array(), 'total' => 0 );
		if ( isset( $_REQUEST['tix_tickets_selected'] ) ) {
			foreach ( $_REQUEST['tix_tickets_selected'] as $ticket_id => $count ) {
				$ticket = $this->tickets[ $ticket_id ];
				$item = array(
					'id' => $ticket->ID,
					'name' => $ticket->post_title,
					'description' => $ticket->post_excerpt,
					'quantity' => $count,
					'price' => $ticket->tix_discounted_price,
				);
				$this->order['items'][] = $item;
				$this->order['total'] += $item['price'] * $item['quantity'];
			}
		}

		if ( isset( $_REQUEST['tix_coupon'] ) )
			$this->order['coupon'] = sanitize_text_field( $_REQUEST['tix_coupon'] );

		if ( isset( $_REQUEST['tix_reservation_id'], $_REQUEST['tix_reservation_token'] ) ) {
			$this->order['reservation_id'] = $_REQUEST['tix_reservation_id'];
			$this->order['reservation_token'] = $_REQUEST['tix_reservation_token'];
		}

		// Check whether this is a valid order.
		if ( ! empty( $this->order['items'] ) )
			$this->verify_order( $this->order );

		// Check selected tickets.
		$tickets_excess = 0;
		$coupons_applied = 0;
		foreach ( $this->tickets_selected as $ticket_id => $count ) {
			$ticket = $this->tickets[ $ticket_id ];

			// Don't allow more than X tickets of each type to be purchased in bulk.
			if ( $count > $max_tickets_per_order && $ticket->tix_remaining > $max_tickets_per_order ) {
				$this->tickets_selected[ $ticket_id ] = $max_tickets_per_order;
				$count = $max_tickets_per_order;
				$tickets_excess += $count - $max_tickets_per_order;
			}

			// ref: #1001
			if ( $count > $ticket->tix_remaining ) {
				$this->tickets_selected[ $ticket_id ] = $ticket->tix_remaining;
				$tickets_excess += $count - $ticket->tix_remaining;

				// Remove the ticket if count is 0.
				if ( $this->tickets_selected[ $ticket_id ] < 1 )
					unset( $this->tickets_selected[ $ticket_id ] );
			}

			// ref: #1002
			if ( $ticket->tix_coupon_applied )
				$coupons_applied += $count;
		}

		$this->tickets_selected_count = 0;
		foreach ( $this->tickets_selected as $ticket_id => $count )
			$this->tickets_selected_count += $count;

		// ref: #1001
		if ( $tickets_excess > 0 )
			$this->error_flags['tickets_excess'] = true;

		// ref: #1002 @todo maybe strip the cheaper ones instead?
		if ( $this->coupon && $coupons_applied > $this->coupon->tix_coupon_remaining ) {
			$this->error_flags['coupon_excess'] = true;

			$extra = $coupons_applied - $this->coupon->tix_coupon_remaining;
			foreach ( array_reverse( $this->tickets_selected, true ) as $ticket_id => $count ) {
				if ( $this->tickets[ $ticket_id ]->tix_coupon_applied ) {
					if ( $extra >= $count && $extra > 0 ) {
						unset( $this->tickets_selected[ $ticket_id ] );
						$extra -= $count;
					} elseif ( $extra > 0 ) {
						$this->tickets_selected[ $ticket_id ] -= $extra;
						$extra -= $count;
					}
				}
			}

			if ( $extra > 0 )
				$this->log( 'Something is terribly wrong, extra > 0 after stripping extra coupons', 0, null, 'critical' );
		}

		if ( isset( $_REQUEST['tix_tickets_selected'] ) ) {
			$this->error_flags['no_tickets_selected'] = true;
			foreach ( $this->tickets_selected as $ticket_id => $count )
				if ( $count > 0 ) unset( $this->error_flags['no_tickets_selected'] );
		}

		$this->did_template_redirect = true;

		// Don't go past the start form if no payment methods are enabled.
		if ( isset( $this->error_flags['no_payment_methods'] ) )
			return $this->shortcode_contents = $this->form_start();

		if ( isset( $_GET['tix_action'] ) && ! empty( $_GET['tix_action'] ) ) {
			if ( 'attendee_info' == $_GET['tix_action'] && isset( $_POST['tix_coupon_submit'], $_POST['tix_coupon'] ) && ! empty( $_POST['tix_coupon'] ) )
				return $this->shortcode_contents = $this->form_start();

			if ( 'attendee_info' == $_GET['tix_action'] && isset( $this->error_flags['no_tickets_selected'] ) )
				return $this->shortcode_contents = $this->form_start();

			if ( 'attendee_info' == $_GET['tix_action'] )
				return $this->shortcode_contents = $this->form_attendee_info();

			if ( 'checkout' == $_GET['tix_action'] )
				return $this->shortcode_contents = $this->form_checkout();

			if ( 'access_tickets' == $_GET['tix_action'] )
				return $this->shortcode_contents = $this->form_access_tickets();

			if ( 'edit_attendee' == $_GET['tix_action'] )
				return $this->shortcode_contents = $this->form_edit_attendee();

			if ( 'refund_request' == $_GET['tix_action'] && $this->options['refunds_enabled'] )
				return $this->shortcode_contents = $this->form_refund_request();
		} else {
			return $this->shortcode_contents = $this->form_start();
		}

		return $this->shortcode_contents = 'Hmmm.';
	}

	/**
	 * Set the reservation members if we have a valid request
	 */
	protected function maybe_set_reservation() {
		if ( isset( $_REQUEST['tix_reservation_id'], $_REQUEST['tix_reservation_token'] ) ) {
			$reservation = $this->get_reservation( $_REQUEST['tix_reservation_token'] );

			if ( $reservation && $reservation['id'] == strtolower( $_REQUEST['tix_reservation_id'] ) && $this->is_reservation_valid_for_use( $reservation['token'] ) ) {
				$this->reservation = $reservation;
			} else {
				$this->error_flags['invalid_reservation'] = true;
			}
		}
	}

	/**
	 * Returns $this->shortcode_contents
	 */
	function shortcode_callback( $atts ) {
		if ( ! $this->did_template_redirect ) {
			$this->log( 'Something is seriously wrong, did_template_redirect is false.', 0, null, 'critical' );
			return __( 'An error has occurred.', 'camptix' );
		}

		wp_enqueue_script( 'camptix' ); // js in footer
		return $this->shortcode_contents;
	}

	/**
	 * Step 1: shows the available tickets table.
	 */
	function form_start() {
		$available_tickets = 0;
		$max_tickets_per_order = apply_filters( 'camptix_max_tickets_per_order', 10 );

		foreach ( $this->tickets as $ticket )
			if ( $this->is_ticket_valid_for_purchase( $ticket->ID ) )
				$available_tickets++;

		if ( isset( $this->error_flags['invalid_coupon'] ) )
			$this->error( __( 'Sorry, but the coupon you have entered seems to be invalid or expired.', 'camptix' ) );

		if ( isset( $this->error_flags['invalid_reservation'] ) )
			$this->error( __( 'Sorry, but the reservation you are trying to use seems to be invalid or expired.', 'camptix' ) );

		if ( ! $available_tickets )
			$this->notice( __( 'Sorry, but there are currently no tickets for sale. Please try again later.', 'camptix' ) );

		if ( $available_tickets && isset( $this->reservation ) && $this->reservation )
			$this->info( __( 'You are using a reservation, cool!', 'camptix' ) );

		if ( ! isset( $_POST['tix_coupon_submit'], $_POST['tix_coupon'] ) || empty( $_POST['tix_coupon'] ) )
			if ( isset( $this->error_flags['no_tickets_selected'] ) && isset( $_GET['tix_action'] ) && 'attendee_info' == $_GET['tix_action'] )
				$this->error( __( 'Please select at least one ticket.', 'camptix' ) );

		if ( isset( $_GET['tix_action'] ) && 'checkout' == $_GET['tix_action'] && isset( $this->error_flags['no_tickets_selected'] ) )
			$this->error( __( 'It looks like somebody took that last ticket before you, sorry! You try a different ticket.', 'camptix' ) );

		if ( isset( $this->error_flags['no_payment_methods'] ) ) {
			$this->notice( __( 'Payment methods have not been configured yet. Please try again later.', 'camptix' ) );
			$available_tickets = 0; // Don't bother to show the ticketing form.
		}

		$redirected_error_flags = isset( $_REQUEST['tix_errors'] ) ? array_flip( (array) $_REQUEST['tix_errors'] ) : array();

		if ( isset( $redirected_error_flags['payment_failed'] ) ) {
			/** @todo explain error */
			$this->error( __( 'An error has occurred and your payment has failed. Please try again later.', 'camptix' ) );
		}

		if ( isset( $redirected_error_flags['tickets_excess'] ) )
			$this->error( __( 'It looks like somebody grabbed those tickets before you could complete the purchase. You have not been charged, please try again.', 'camptix' ) );

		if ( isset( $redirected_error_flags['coupon_excess'] ) )
			$this->error( __( 'It looks like somebody has used the coupon before you could complete your purchase. You have not been charged, please try again.', 'camptix' ) );

		if ( isset( $redirected_error_flags['invalid_coupon'] ) )
			$this->error( __( 'It looks like the coupon you are trying to use has expired before you could complete your purchase. You have not been charged, please try again.', 'camptix' ) );

		if ( isset( $redirected_error_flags['invalid_access_token'] ) )
			$this->error( __( 'Your access token does not seem to be valid.', 'camptix' ) );

		if ( isset( $redirected_error_flags['payment_cancelled'] ) )
			$this->error( __( 'Your payment has been cancelled. Feel free to try again!', 'camptix' ) );

		if ( isset( $redirected_error_flags['invalid_edit_token'] ) )
			$this->error( __( 'The edit link you are trying to use is either invalid or has expired.', 'camptix' ) );

		if ( isset( $redirected_error_flags['cannot_refund'] ) )
			$this->error( __( 'Your refund request can not be processed. Please try again later or contact support.', 'camptix' ) );

		if ( isset( $redirected_error_flags['invalid_reservation'] ) )
			$this->error( __( 'Sorry, but the reservation you are trying to use has been cancelled or has expired.', 'camptix' ) );

		do_action( 'camptix_form_start_errors', $redirected_error_flags );

		ob_start();
		?>
		<div id="tix">
			<?php do_action( 'camptix_notices' ); ?>
			<?php if ( $available_tickets ) : ?>
				<form action="<?php echo esc_url( add_query_arg( 'tix_action', 'attendee_info', $this->get_tickets_url() ) ); ?>#tix" method="POST">

				<?php if ( isset( $this->reservation ) && $this->reservation ) : ?>
					<input type="hidden" name="tix_reservation_id" value="<?php echo esc_attr( $this->reservation['id'] ); ?>" />
					<input type="hidden" name="tix_reservation_token" value="<?php echo esc_attr( $this->reservation['token'] ); ?>" />
				<?php endif; ?>

				<table class="tix_tickets_table">
					<thead>
						<tr>
							<th class="tix-column-description"><?php _e( 'Description', 'camptix' ); ?></th>
							<th class="tix-column-price"><?php _e( 'Price', 'camptix' ); ?></th>
							<?php if ( apply_filters( 'camptix_show_remaining_tickets', true ) ) : ?>
								<th class="tix-column-remaining"><?php _e( 'Remaining', 'camptix' ); ?></th>
							<?php endif; ?>
							<th class="<?php echo esc_attr( implode( ' ', apply_filters( 'camptix_quantity_row_classes', array( 'tix-column-quantity' ) ) ) ); ?>">
								<?php _e( 'Quantity', 'camptix' ); ?>
							</th>
						</tr>
					</thead>
					<tbody>
						<?php foreach ( $this->tickets as $ticket ) : ?>
							<?php
							if ( ! $this->is_ticket_valid_for_purchase( $ticket->ID ) )
								continue;

							$price = $ticket->tix_price;
							$discounted = '';

							$max = min( $ticket->tix_remaining, $max_tickets_per_order );
							$selected = ( 1 == count( $this->tickets ) ) ? 1 : 0;
							if ( isset( $this->tickets_selected[$ticket->ID] ) )
								$selected = intval( $this->tickets_selected[$ticket->ID] );

							// Recount selects, change price.
							if ( $ticket->tix_coupon_applied ) {
								$max = min( $this->coupon->tix_coupon_remaining, $ticket->tix_remaining, $max_tickets_per_order );
								if ( $selected > $this->coupon->tix_coupon_remaining )
									$selected = $this->coupon->tix_coupon_remaining;

								$price = $ticket->tix_discounted_price;
							}
							?>
							<tr class="tix-ticket-<?php echo absint( $ticket->ID ); ?>">
								<td class="tix-column-description">
									<strong class="tix-ticket-title"><?php echo esc_html( $ticket->post_title ); ?></strong>
									<?php if ( $ticket->post_excerpt ) : ?>
										<br /><span class="tix-ticket-excerpt"><?php echo esc_html( $ticket->post_excerpt ); ?></span>
									<?php endif; ?>
									<?php if ( $ticket->tix_coupon_applied ) : ?>
										<br /><small class="tix-discount"><?php echo esc_html( $ticket->tix_discounted_text ); ?></small>
									<?php endif; ?>
								</td>
								<td class="tix-column-price" style="vertical-align: middle;">
									<?php if ( $price > 0 ) : ?>
										<?php echo esc_html( $this->append_currency( $price ) ); ?>
									<?php else : ?>
										<?php _e( 'Free', 'camptix' ); ?>
									<?php endif; ?>
								</td>
								<?php if ( apply_filters( 'camptix_show_remaining_tickets', true ) ) : ?>
									<td class="tix-column-remaining" style="vertical-align: middle;"><?php echo esc_html( apply_filters( 'camptix_form_start_tix_remaining', $ticket->tix_remaining, $ticket ) ); ?></td>
								<?php endif; ?>
								<td class="<?php echo esc_attr( implode( ' ', apply_filters( 'camptix_quantity_row_classes', array( 'tix-column-quantity' ) ) ) ); ?>" style="vertical-align: middle;">
									<select name="tix_tickets_selected[<?php echo esc_attr( $ticket->ID ); ?>]">
										<?php foreach ( range( 0, $max ) as $value ) : ?>
											<option <?php selected( $selected, $value ); ?> value="<?php echo esc_attr( $value ); ?>"><?php echo esc_html( $value ); ?></option>
										<?php endforeach; ?>
									</select>
								</td>
							</tr>
						<?php endforeach; ?>
						<?php if ( $this->have_coupons() ) : ?>
							<tr class="tix-row-coupon">
								<td colspan="4" style="text-align: right;">
									<?php if ( $this->coupon ) : ?>
										<input type="hidden" name="tix_coupon" value="<?php echo esc_attr( $this->coupon->post_title ); ?>" />
										<?php
										$discount_price = (float) $this->coupon->tix_discount_price;
										$discount_percent = (float) $this->coupon->tix_discount_percent;
										if ( $discount_price > 0 ) {
											$discount_text = $this->append_currency( $discount_price );
										} elseif ( $discount_percent > 0 ) {
											$discount_text = $discount_percent . '%';
										}
										?>
										<?php printf( __( 'Coupon Applied: <strong>%s</strong>, %s discount', 'camptix' ), esc_html( $this->coupon->post_title ), esc_html( $discount_text ) ); ?>
									<?php else : ?>
										<a href="#" id="tix-coupon-link" class="<?php echo esc_attr( implode( ' ', apply_filters( 'camptix_coupon_link_classes', array() ) ) ); ?>">
											<?php _e( 'Click here to enter a coupon code', 'camptix' ); ?>
										</a>
										<div id="tix-coupon-container" style="display: none;">
											<input type="text" id="tix-coupon-input" name="tix_coupon" value="" />
											<input type="submit" name="tix_coupon_submit" value="<?php esc_attr_e( 'Apply Coupon', 'camptix' ); ?>" />
										</div>
										<script>
											// Hide the link and show the coupon form on click.
											var link_el = document.getElementById( 'tix-coupon-link' );
											link_el.onclick = function() {
												this.style.display = 'none';
												document.getElementById( 'tix-coupon-container' ).style.display = 'block';
												document.getElementById( 'tix-coupon-input' ).focus();
												return false;
											};
										</script>
									<?php endif; // doing coupon && valid ?>
								</td>
							</tr>
						<?php endif; ?>
					</tbody>
				</table>

				<p>
					<input type="submit" value="<?php esc_attr_e( 'Register &rarr;', 'camptix' ); ?>" style="float: right; cursor: pointer;" class="<?php echo esc_attr( implode( ' ', apply_filters( 'camptix_register_button_classes', array() ) ) ); ?>" />
					<br class="tix-clear" />
				</p>
				</form>
			<?php endif; ?>
		</div><!-- #tix -->
		<?php
		wp_reset_postdata();
		$contents = ob_get_contents();
		ob_end_clean();
		return $contents;
	}

	/**
	 * Step 2: asks for attendee information on chosen tickets.
	 */
	function form_attendee_info() {
		global $post;

		// Clean things up before and after the shortcode.
		$post->post_content = $this->shortcode_str;

		if ( isset( $this->error_flags['no_tickets_selected'], $_GET['tix_action'] ) && 'checkout' == $_GET['tix_action'] )
			return $this->form_start();

		if ( isset( $this->error_flags['tickets_excess'], $_GET['tix_action'] ) )
			if ( 'attendee_info' == $_GET['tix_action'] )
				$this->notice( __( 'It looks like you have chosen more tickets than we have left! We have stripped the extra ones.', 'camptix' ) );
			elseif ( 'checkout' == $_GET['tix_action'] )
				$this->error( __( 'It looks like somebody purchased a ticket before you could finish your purchase. Please review your order and try again.', 'camptix' ) );

		if ( isset( $this->error_flags['coupon_excess'], $_GET['tix_action'] ) )
			if ( 'attendee_info' == $_GET['tix_action'] )
				$this->notice( __( 'You have exceeded the coupon limits, so we have stripped down the extra tickets.', 'camptix' ) );
			elseif ( 'checkout' == $_GET['tix_action'] )
				$this->error( __( 'It looks like somebody used the same coupon before you could finish your purchase. Please review your order and try again.', 'camptix' ) );

		if ( isset( $this->error_flags['required_fields'] ) )
			$this->error( __( 'Please fill in all required fields.', 'camptix' ) );

		if ( isset( $this->error_flags['invalid_email'] ) )
			$this->error( __( 'The e-mail address you have entered seems to be invalid.', 'camptix' ) );

		if ( isset( $this->error_flags['no_receipt_email'] ) )
			$this->error( __( 'The chosen receipt e-mail address is either empty or invalid.', 'camptix' ) );

		if ( isset( $this->error_flags['payment_failed'] ) )
			$this->error( __( 'A payment error has occurred, looks like chosen payment method is not responding. Please try again later.', 'camptix' ) );

		if ( isset( $this->error_flags['invalid_payment_method'] ) )
			$this->error( __( 'You have selected an invalid payment method. Please try again.', 'camptix' ) );

		if ( isset( $this->error_flags['invalid_coupon'] ) )
			$this->notice( __( "Looks like you're trying to use an invalid or expired coupon.", 'camptix' ) );

		ob_start();
		$total = 0;
		$i = 1;
		?>
		<div id="tix" class="tix-has-dynamic-receipts">
			<?php do_action( 'camptix_notices' ); ?>
			<form action="<?php echo esc_url( add_query_arg( 'tix_action', 'checkout' ), $this->get_tickets_url() ); ?>#tix" method="POST">

				<?php if ( $this->coupon ) : ?>
					<input type="hidden" name="tix_coupon" value="<?php echo esc_attr( $this->coupon->post_title ); ?>" />
				<?php endif; ?>

				<?php if ( isset( $this->reservation ) && $this->reservation ) : ?>
					<input type="hidden" name="tix_reservation_id" value="<?php echo esc_attr( $this->reservation['id'] ); ?>" />
					<input type="hidden" name="tix_reservation_token" value="<?php echo esc_attr( $this->reservation['token'] ); ?>" />
				<?php endif; ?>

				<?php foreach ( $this->tickets_selected as $ticket_id => $count ) : ?>
					<input type="hidden" name="tix_tickets_selected[<?php echo intval( $ticket_id ); ?>]" value="<?php echo intval( $count ); ?>" />
				<?php endforeach; ?>

				<h2><?php echo esc_html( apply_filters( 'camptix_register_order_summary_header', __( 'Order Summary', 'camptix' ) ) ); ?></h2>
				<table class="tix_tickets_table tix-order-summary">
					<thead>
						<tr>
							<th class="tix-column-description"><?php _e( 'Description', 'camptix' ); ?></th>
							<th class="tix-column-per-ticket"><?php _e( 'Per Ticket', 'camptix' ); ?></th>
							<th class="tix-column-quantity"><?php _e( 'Quantity', 'camptix' ); ?></th>
							<th class="tix-column-price"><?php _e( 'Price', 'camptix' ); ?></th>
						</tr>
					</thead>
					<tbody>
						<?php foreach ( $this->tickets_selected as $ticket_id => $count ) : ?>
							<?php
								$ticket = $this->tickets[$ticket_id];
								$price = ( $ticket->tix_coupon_applied ) ? $ticket->tix_discounted_price : $ticket->tix_price;
								$total += $price * $count;
							?>
							<tr>
								<td class="tix-column-description">
									<strong><?php echo esc_html( $ticket->post_title ); ?></strong>
									<?php if ( $ticket->tix_coupon_applied ) : ?>
									<br /><small><?php echo esc_html( $ticket->tix_discounted_text ); ?></small>
									<?php endif; ?>
								</td>
								<td class="tix-column-per-ticket">
								<?php if ( $price > 0 ) : ?>
									<?php echo esc_html( $this->append_currency( $price ) ); ?>
								<?php else : ?>
									<?php _e( 'Free', 'camptix' ); ?>
								<?php endif; ?>
								</td>
								<td class="tix-column-quantity"><?php echo intval( $count ); ?></td>
								<td class="tix-column-price"><?php echo esc_html( $this->append_currency( $price  * intval( $count ) ) ); ?></td>
							</tr>
						<?php endforeach; ?>
						<tr class="tix-row-total">
							<td colspan="3" style="text-align: right">
								<?php if ( $this->coupon ) : ?>
									<?php
										$discount_price = (float) $this->coupon->tix_discount_price;
										$discount_percent = (float) $this->coupon->tix_discount_percent;
										if ( $discount_price > 0 ) {
											$discount_text = $this->append_currency( $discount_price );
										} elseif ( $discount_percent > 0 ) {
											$discount_text = $discount_percent . '%';
										}
									?>
									<small><?php printf( __( 'Coupon Applied: <strong>%s</strong>, %s discount', 'camptix' ), esc_html( $this->coupon->post_title ), esc_html( $discount_text ) ); ?></small>
								<?php endif; ?>
							</td>
							<td><strong><?php echo esc_html( $this->append_currency( $total ) ); ?></strong></td>
						</tr>
					</tbody>
				</table>

				<h2 id="tix-registration-information"><?php echo esc_html( apply_filters( 'camptix_register_registration_info_header', __( 'Registration Information', 'camptix' ) ) ); ?></h2>
				<?php foreach ( $this->tickets_selected as $ticket_id => $count ) : ?>
					<?php foreach ( range( 1, $count ) as $looping_count_times ) : ?>

						<?php
							$ticket = $this->tickets[$ticket_id];
							$questions = $this->get_sorted_questions( $ticket->ID );
						?>
						<input type="hidden" name="tix_attendee_info[<?php echo esc_attr( $i ); ?>][ticket_id]" value="<?php echo intval( $ticket->ID ); ?>" />
						<table class="tix_tickets_table tix-attendee-form">
							<tbody>
								<tr>
									<th colspan="2">
										<?php echo esc_html( $i ); ?>. <?php echo esc_html( $ticket->post_title ); ?>
									</th>
								</tr>

								<?php do_action( 'camptix_attendee_form_before_input', $this->form_data, $ticket, $i ); ?>

								<?php ob_start(); ?>
								<tr class="tix-row-first-name">
									<td class="tix-required tix-left"><?php _e( 'First Name', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
									<?php $value = isset( $this->form_data['tix_attendee_info'][$i]['first_name'] ) ? $this->form_data['tix_attendee_info'][$i]['first_name'] : apply_filters( 'camptix_attendee_info_default_value', '', 'first_name', $this->form_data, $ticket, $i ); ?>
									<td class="tix-right"><input name="tix_attendee_info[<?php echo esc_attr( $i ); ?>][first_name]" type="text" value="<?php echo esc_attr( $value ); ?>" /></td>
								</tr>
								<?php $first = ob_get_clean(); ?>

								<?php ob_start(); ?>
								<tr class="tix-row-last-name">
									<td class="tix-required tix-left"><?php _e( 'Last Name', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
									<?php $value = isset( $this->form_data['tix_attendee_info'][$i]['last_name'] ) ? $this->form_data['tix_attendee_info'][$i]['last_name'] : apply_filters( 'camptix_attendee_info_default_value', '', 'last_name', $this->form_data, $ticket, $i ); ?>
									<td class="tix-right"><input name="tix_attendee_info[<?php echo esc_attr( $i ); ?>][last_name]" type="text" value="<?php echo esc_attr( $value ); ?>" /></td>
								</tr>
								<?php $last = ob_get_clean(); ?>

								<?php echo $this->format_name_string( '%first% %last%', $first, $last ); ?>

								<?php do_action( 'camptix_attendee_form_additional_info', $this->form_data, $i, $this->tickets_selected_count ); ?>

								<tr class="tix-row-email">
									<td class="tix-required tix-left"><?php _e( 'E-mail', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
									<?php $value = isset( $this->form_data['tix_attendee_info'][$i]['email'] ) ? $this->form_data['tix_attendee_info'][$i]['email'] : apply_filters( 'camptix_attendee_info_default_value', '', 'email', $this->form_data, $ticket, $i ); ?>
									<td class="tix-right">
										<input class="tix-field-email" name="tix_attendee_info[<?php echo esc_attr( $i ); ?>][email]" type="email" value="<?php echo esc_attr( $value ); ?>" />
										<?php $tix_receipt_email = isset( $this->form_data['tix_receipt_email'] ) ? $this->form_data['tix_receipt_email'] : 1; ?>

										<?php if ( $this->tickets_selected_count > 1 ) : ?>
											<div class="tix-hide-if-js">
												<label><input name="tix_receipt_email" <?php checked( $tix_receipt_email, $i ); ?> value="<?php echo esc_attr( $i ); ?>" type="radio" /> <?php _e( 'Send the receipt to this address', 'camptix' ); ?></label>
											</div>
										<?php else: ?>
											<input name="tix_receipt_email" type="hidden" value="1" />
										<?php endif; ?>
									</td>
								</tr>

								<?php
									do_action( 'camptix_question_fields_init' );
									$question_num = 0; // Used for questions class names.
								?>
								<?php if ( apply_filters( 'camptix_ask_questions', true, $this->tickets_selected, $ticket_id, $i, $questions ) ) : ?>
									<?php foreach ( $questions as $question ) : ?>

										<?php
											$name       = sprintf( 'tix_attendee_questions[%d][%s]', $i, $question->ID );
											$value      = isset( $this->form_data['tix_attendee_questions'][ $i ][ $question->ID ] ) ? $this->form_data['tix_attendee_questions'][ $i ][ $question->ID ] : '';
											$type       = get_post_meta( $question->ID, 'tix_type', true );
											$required   = get_post_meta( $question->ID, 'tix_required', true );
											$class_name = 'tix-row-question-' . $question->ID;
										?>

										<tr class="<?php echo esc_attr( $class_name ); ?>">
											<td class="<?php if ( $required ) echo 'tix-required'; ?> tix-left">
												<?php echo esc_html( apply_filters( 'the_title', $question->post_title ) ); ?>
												<?php if ( $required ) echo ' <span class="tix-required-star">*</span>'; ?>
											</td>
											<td class="tix-right">
												<?php do_action( "camptix_question_field_{$type}", $name, $value, $question ); ?>
											</td>
										</tr>
									<?php endforeach; ?>
								<?php endif; ?>
							</tbody>
						</table>
						<?php $i++; ?>

					<?php endforeach; // range ?>
				<?php endforeach; // tickets_selected ?>

				<?php if ( $this->tickets_selected_count > 1 ) : ?>
				<div class="tix-show-if-js">
				<table class="tix-receipt-form">
					<tr>
						<th colspan="2"><?php _e( 'Receipt', 'camptix' ); ?></th>
					</tr>
					<tr>
						<td class="tix-left tix-required"><?php _e( 'E-mail the receipt to', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
						<td class="tix-right" id="tix-receipt-emails-list">
							<?php if ( isset( $this->form_data['tix_receipt_email_js'] ) && is_email( $this->form_data['tix_receipt_email_js'] ) ) : ?>
								<label><input name="tix_receipt_email_js" checked="checked" value="<?php echo esc_attr( $this->form_data['tix_receipt_email_js'] ); ?>" type="radio" /> <?php echo esc_html( $this->form_data['tix_receipt_email_js'] ); ?></label><br />
							<?php endif; ?>
						</td>
					</tr>
				</table>
				</div>
				<?php endif; ?>

				<p class="tix-submit">
					<?php if ( $total > 0 ) : ?>
					<select name="tix_payment_method">
						<?php foreach ( $this->get_enabled_payment_methods() as $payment_method_key => $payment_method ) : ?>
							<option <?php selected( ! empty( $this->form_data['tix_payment_method'] ) && $this->form_data['tix_payment_method'] == $payment_method_key ); ?> value="<?php echo esc_attr( $payment_method_key ); ?>"><?php echo esc_html( $payment_method['name'] ); ?></option>
						<?php endforeach; ?>
					</select>
					<input type="submit" value="<?php esc_attr_e( 'Checkout &rarr;', 'camptix' ); ?>" />
					<?php else : ?>
						<input type="submit" value="<?php esc_attr_e( 'Claim Tickets &rarr;', 'camptix' ); ?>" />
					<?php endif; ?>
					<br class="tix-clear" />
				</p>
			</form>
		</div><!-- #tix -->
		<?php
		$contents = ob_get_contents();
		ob_end_clean();
		return $contents;
	}

	/**
	 * Allows buyer to access all purchased tickets.
	 */
	function form_access_tickets() {
		global $post;

		// Clean things up before and after the shortcode.
		$post->post_content = $this->shortcode_str;

		ob_start();

		if ( ! isset( $_REQUEST['tix_access_token'] ) || empty( $_REQUEST['tix_access_token'] ) || ! ctype_alnum( $_REQUEST['tix_access_token'] ) ) {
			$this->error_flags['invalid_access_token'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		$access_token = $_REQUEST['tix_access_token'];
		$is_refundable = false;

		// Let's get one attendee
		$attendees = get_posts( array(
			'posts_per_page' => 1,
			'post_type' => 'tix_attendee',
			'post_status' => array( 'publish', 'pending' ),
			'meta_query' => array(
				array(
					'key' => 'tix_access_token',
					'value' => $access_token,
					'compare' => '=',
					'type' => 'CHAR',
				),
			),
			'cache_results' => false,
		) );

		if ( ! $attendees ) {
			$this->error_flags['invalid_access_token'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		if ( $attendees[0]->post_status == 'pending' )
			$this->notice( __( 'Please note that the payment for this set of tickets is still pending.', 'camptix' ) );
		?>
		<div id="tix">
		<?php do_action( 'camptix_notices' ); ?>
		<table class="tix-ticket-form">
			<thead>
				<tr>
					<th><?php _e( 'Tickets Summary', 'camptix' ); ?></th>
					<th><?php _e( 'Purchase Date', 'camptix' ); ?></th>
					<th></th>
				</tr>
			</thead>
			<tbody>
			<?php
			$paged = 1; $count = 0;
			while ( $attendees = get_posts( array(
				'posts_per_page' => 200,
				'paged' => $paged++,
				'post_type' => 'tix_attendee',
				'post_status' => array( 'publish', 'pending' ),
				'meta_query' => array(
					array(
						'key' => 'tix_access_token',
						'value' => $access_token,
						'compare' => '=',
						'type' => 'CHAR',
					),
				),
				'cache_results' => false,
			) ) ) :

				$attendee_ids = array();
				foreach ( $attendees as $attendee )
					$attendee_ids[] = $attendee->ID;

				/**
				 * Magic here, to by-pass object caching. See Revenue report for more info.
				 * @todo perhaps this magic is not needed here, there won't be bulk purchases with 2k tickets.
				 */
				$this->filter_post_meta = $this->prepare_metadata_for( $attendee_ids );
				unset( $attendee_ids, $attendee );
			?>

				<?php foreach ( $attendees as $attendee ) : $count++; ?>

					<?php
						$edit_token = get_post_meta( $attendee->ID, 'tix_edit_token', true );
						$edit_link = $this->get_edit_attendee_link( $attendee->ID, $edit_token );
						$first_name = get_post_meta( $attendee->ID, 'tix_first_name', true );
						$last_name = get_post_meta( $attendee->ID, 'tix_last_name', true );

						if ( $this->is_refundable( $attendee->ID ) )
							$is_refundable = true;
					?>
					<tr>
						<td>
							<strong><?php echo esc_html( $this->format_name_string( "%first% %last%", $first_name, $last_name ) ); ?></strong><br />
							<?php echo esc_html( $this->get_ticket_title( intval( get_post_meta( $attendee->ID, 'tix_ticket_id', true ) ) ) ); ?>
						</td>
						<td>
							<?php echo esc_html( mysql2date( get_option( 'date_format' ), $attendee->post_date ) ); ?>
						</td>
						<td>
							<?php
								echo apply_filters(
									'camptix_edit_info_cell_content',
									sprintf( '<a href="%s">%s</a>', esc_url( $edit_link ), __( 'Edit information', 'camptix' ) ),
									$attendee
								);
							?>
						</td>
					</tr>

					<?php
					// Delete caches individually rather than clean_post_cache( $attendee_id ),
					// prevents querying for children posts, saves a bunch of queries :)
					// wp_cache_delete( $attendee->ID, 'posts' );
					// wp_cache_delete( $attendee->ID, 'post_meta' );
					?>
				<?php endforeach; ?>
				<?php $this->filter_post_meta = false; // Cleanup the prepared data ?>
			<?php endwhile; ?>

			</tbody>
		</table>
		<?php if ( $is_refundable ) : ?>
		<p><?php printf( __( "Change of plans? Made a mistake? Don't worry, you can %s.", 'camptix' ), '<a href="' . esc_url( $this->get_refund_tickets_link( $access_token ) ) . '">' . __( 'request a refund', 'camptix' ) . '</a>' ); ?></p>
		<?php endif; ?>
		</div><!-- #tix -->
		<?php
		$contents = ob_get_contents();
		ob_end_clean();
		return $contents;
	}

	/**
	 * Allows attendees to edit their information.
	 */
	function form_edit_attendee() {
		global $post;

		// Clean things up before and after the shortcode.
		$post->post_content = $this->shortcode_str;

		ob_start();
		if ( ! isset( $_REQUEST['tix_edit_token'] ) || empty( $_REQUEST['tix_edit_token'] ) || ! ctype_alnum( $_REQUEST['tix_edit_token'] ) ) {
			$this->error_flags['invalid_edit_token'] = true;
			$this->redirect_with_error_flags();
		}

		if ( ! isset( $_REQUEST['tix_attendee_id'] ) || empty( $_REQUEST['tix_attendee_id'] ) || ! intval( $_REQUEST['tix_attendee_id'] ) ) {
			$this->error_flags['invalid_edit_token'] = true;
			$this->redirect_with_error_flags();
		}

		$attendee_id = intval( $_REQUEST['tix_attendee_id'] );
		$attendee = get_post( $attendee_id );
		$edit_token = $_REQUEST['tix_edit_token'];

		if ( ! $attendee || $attendee->post_type != 'tix_attendee' ) {
			$this->error_flags['invalid_edit_token'] = true;
			$this->redirect_with_error_flags();
		}

		if ( $edit_token !== get_post_meta( $attendee->ID, 'tix_edit_token', true ) ) {
			$this->error_flags['invalid_edit_token'] = true;
			$this->redirect_with_error_flags();
		}

		if ( $attendee->post_status != 'publish' && $attendee->post_status != 'pending' ) {
			if ( current_user_can( $this->caps['manage_options'] ) ) {
				$this->notice( __( 'This attendee is not published.', 'camptix' ) );
			} else {
				$this->error_flags['invalid_edit_token'] = true;
				$this->redirect_with_error_flags();
			}
		}

		$ticket_id = get_post_meta( $attendee->ID, 'tix_ticket_id', true );
		if ( ! $this->is_ticket_valid_for_display( $ticket_id ) ) {
			$this->error_flags['invalid_edit_token'] = true;
			$this->redirect_with_error_flags();
		}

		do_action( 'camptix_form_edit_attendee_custom_error_flags', $attendee );

		if ( $attendee->post_status == 'pending' )
			$this->notice( __( 'Please note that the payment for this ticket is still pending.', 'camptix' ) );

		$ticket = get_post( $ticket_id );
		$questions = $this->get_sorted_questions( $ticket->ID );
		$answers = (array) get_post_meta( $attendee->ID, 'tix_questions', true );
		$ticket_info = apply_filters( 'camptix_form_edit_attendee_ticket_info', array(
			'first_name' => get_post_meta( $attendee->ID, 'tix_first_name', true ),
			'last_name' => get_post_meta( $attendee->ID, 'tix_last_name', true ),
			'email' => get_post_meta( $attendee->ID, 'tix_email', true ),
		) );

		if ( isset( $_POST['tix_attendee_save'] ) ) {
			$errors = array();
			$posted = stripslashes_deep( $_POST );

			$new_ticket_info = $posted['tix_ticket_info'];
			$new_ticket_info = array_map( 'trim', $new_ticket_info );

			// todo validate new attendee data here, maybe wrap data validation.
			if ( empty( $new_ticket_info['first_name'] ) || empty( $new_ticket_info['last_name'] ) )
				$errors[] = __( 'Please fill in all required fields.', 'camptix' );

			if ( ! is_email( $new_ticket_info['email'] ) )
				$errors[] = __( 'You have entered an invalid e-mail, please try again.', 'camptix' );

			$new_answers = array();
			foreach ( $questions as $question ) {
				if ( isset( $_POST['tix_ticket_questions'][ $question->ID ] ) ) {
					$answer = stripslashes_deep( $posted['tix_ticket_questions'][ $question->ID ] );
					$answer = ( is_array( $answer ) ) ? array_map( 'strip_tags', $answer ) : strip_tags( $answer );
					$new_answers[ $question->ID ] = $answer;
				}

				// @todo maybe check $user_values against $type and $question_values

				if ( (bool) get_post_meta( $question->ID, 'tix_required', true ) && empty( $new_answers[ $question->ID ] ) ) {
					$errors[] = __( 'Please fill in all required fields.', 'camptix' );
				}
			}

			if ( count( $errors ) > 0 ) {
				$this->error( __( 'Your information has not been changed!', 'camptix' ) );
				foreach ( $errors as $error )
					$this->error( $error );
			} else {

				// Save info
				update_post_meta( $attendee->ID, 'tix_first_name', sanitize_text_field( $new_ticket_info['first_name'] ) );
				update_post_meta( $attendee->ID, 'tix_last_name', sanitize_text_field( $new_ticket_info['last_name'] ) );
				update_post_meta( $attendee->ID, 'tix_email', sanitize_email( $new_ticket_info['email'] ) );
				update_post_meta( $attendee->ID, 'tix_questions', $new_answers );

				do_action( 'camptix_form_edit_attendee_update_post_meta', $new_ticket_info, $attendee );

				wp_update_post( $attendee ); // triggers save_attendee

				$this->info( __( 'Your information has been saved!', 'camptix' ) );
				$this->log( 'Changed attendee data from frontend.', $attendee->ID, $_POST );
			}

			// Use $_POST'ed values in input fields
			$ticket_info = $new_ticket_info;
			$answers     = $new_answers;
		}
		?>
		<div id="tix">
			<?php do_action( 'camptix_notices' ); ?>
			<form action="<?php echo esc_url( add_query_arg( 'tix_action', 'edit_attendee' ) ); ?>#tix" method="POST">
				<input type="hidden" name="tix_attendee_save" value="1" />

				<h2><?php _e( 'Attendee Information', 'camptix' ); ?></h2>
				<table class="tix_tickets_table tix-attendee-form">
					<tbody>
						<tr>
							<th colspan="2">
								<?php echo esc_html( $ticket->post_title ); ?>
							</th>
						</tr>
						<tr>
							<td class="tix-required tix-left"><?php _e( 'First Name', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
							<td class="tix-right"><input name="tix_ticket_info[first_name]" type="text" value="<?php echo esc_attr( $ticket_info['first_name'] ); ?>" /></td>
						</tr>
						<tr>
							<td class="tix-required tix-left"><?php _e( 'Last Name', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
							<td class="tix-right"><input name="tix_ticket_info[last_name]" type="text" value="<?php echo esc_attr( $ticket_info['last_name'] ); ?>" /></td>
						</tr>

						<?php do_action( 'camptix_form_edit_attendee_additional_info', $attendee ); ?>

						<tr>
							<td class="tix-required tix-left"><?php _e( 'E-mail', 'camptix' ); ?> <span class="tix-required-star">*</span></td>
							<td class="tix-right"><input name="tix_ticket_info[email]" type="text" value="<?php echo esc_attr( $ticket_info['email'] ); ?>" /></td>
						</tr>

						<?php do_action( 'camptix_question_fields_init' ); ?>
						<?php if ( apply_filters( 'camptix_ask_questions', true, array( (int) $ticket_id => 1 ), (int) $ticket_id, 1, $questions ) ) : ?>
							<?php foreach ( $questions as $question ) : ?>
								<?php
									$name       = sprintf( 'tix_ticket_questions[%d]', $question->ID );
									$value      = isset( $answers[ $question->ID ] ) ? $answers[ $question->ID ] : '';
									$type       = get_post_meta( $question->ID, 'tix_type', true );
									$required   = get_post_meta( $question->ID, 'tix_required', true );
									$class_name = 'tix-row-question-' . $question->ID;
								?>

								<tr class="<?php echo esc_attr( $class_name ); ?>">
									<td class="<?php if ( $required ) echo 'tix-required'; ?> tix-left">
										<?php echo esc_html( apply_filters( 'the_title', $question->post_title ) ); ?>
										<?php if ( $required ) echo ' <span class="tix-required-star">*</span>'; ?></td>
									<td class="tix-right">
										<?php do_action( "camptix_question_field_{$type}", $name, $value, $question ); ?>
									</td>
								</tr>
							<?php endforeach; ?>
						<?php endif; ?>

					</tbody>
				</table>

				<p>
					<?php $submit_button_value = apply_filters( 'camptix_save_attendee_information_label', __( 'Save Attendee Information', 'camptix' ), $attendee, $ticket, $questions ); ?>
					<input type="submit" value="<?php echo esc_attr( $submit_button_value ); ?>" style="float: right; cursor: pointer;" />
					<br class="tix-clear" />
				</p>
			</form>
		</div><!-- #tix -->
		<?php
		$contents = ob_get_contents();
		ob_end_clean();
		return $contents;
	}

	function form_refund_request() {
		global $post;

		// Clean things up before and after the shortcode.
		$post->post_content = $this->shortcode_str;

		if ( ! $this->options['refunds_enabled'] || ! isset( $_REQUEST['tix_access_token'] ) || ! ctype_alnum( $_REQUEST['tix_access_token'] ) ) {
			$this->error_flags['invalid_access_token'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		$today = date( 'Y-m-d' );
		$refunds_until = $this->options['refunds_date_end'];
		if ( ! strtotime( $refunds_until ) || strtotime( $refunds_until ) < strtotime( $today ) ) {
			$this->error_flags['cannot_refund'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		$access_token = $_REQUEST['tix_access_token'];

		// Let's get one attendee
		$attendees = get_posts( array(
			'posts_per_page' => -1,
			'post_type' => 'tix_attendee',
			'post_status' => array( 'publish', 'pending' ),
			'meta_query' => array(
				array(
					'key' => 'tix_access_token',
					'value' => $access_token,
					'compare' => '=',
					'type' => 'CHAR',
				),
			),
		) );

		if ( ! $attendees ) {
			$this->error_flags['invalid_access_token'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		$transactions = array();
		$is_refundable = false;
		$order_total = 0;
		$tickets = array();

		foreach ( $attendees as $attendee ) {
			$txn_id = get_post_meta( $attendee->ID, 'tix_transaction_id', true );
			if ( $txn_id ) {
				$transactions[ $txn_id ]                   = get_post_meta( $attendee->ID, 'tix_transaction_details', true );
				$transactions[ $txn_id ]['transaction_id'] = $txn_id;
				$transactions[ $txn_id ]['payment_amount'] = get_post_meta( $attendee->ID, 'tix_order_total', true );
				$transactions[ $txn_id ]['receipt_email']  = get_post_meta( $attendee->ID, 'tix_receipt_email', true );
				$transactions[ $txn_id ]['payment_method'] = get_post_meta( $attendee->ID, 'tix_payment_method', true );
				$transactions[ $txn_id ]['payment_token']  = get_post_meta( $attendee->ID, 'tix_payment_token', true );
			}
			$ticket_id = get_post_meta( $attendee->ID, 'tix_ticket_id', true );

			if ( isset( $tickets[$ticket_id] ) )
				$tickets[$ticket_id]++;
			else
				$tickets[$ticket_id] = 1;
		}

		if ( count( $transactions ) != 1 || $transactions[ $txn_id ]['payment_amount'] <= 0 ) {
			$this->error_flags['cannot_refund'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		$transaction = array_shift( $transactions );
		if ( ! $transaction['receipt_email'] || ! $transaction['transaction_id'] || ! $transaction['payment_amount'] ) {
			$this->error_flags['cannot_refund'] = true;
			$this->redirect_with_error_flags();
			die();
		}

		// Has a refund request been submitted?
		$reason = '';
		if ( isset( $_POST['tix_refund_request_submit'] ) ) {
			$reason = esc_html( $_POST['tix_refund_request_reason'] );
			$check = isset( $_POST['tix_refund_request_confirmed'] ) ? $_POST['tix_refund_request_confirmed'] : false;

			if ( ! $check ) {
				$this->error( __( 'You have to agree to the terms to request a refund.', 'camptix' ) );
			} else {

				$payment_method_obj = $this->get_payment_method_by_id( $transaction['payment_method'] );

				// Bail if a payment method does not exist.
				if ( ! $payment_method_obj ) {
					$this->error_flags['cannot_refund'] = true;
					$this->redirect_with_error_flags();
					die();
				}

				/**
				 * @todo: Better error messaging for misconfigured payment methods
				 */

				// Attempt to process the refund transaction
				$result = $payment_method_obj->payment_refund( $transaction['payment_token'] );
				$this->log( 'Individual refund request result.', $attendee->ID, $result, 'refund' );
				if ( CampTix_Plugin::PAYMENT_STATUS_REFUNDED == $result ) {
					foreach ( $attendees as $attendee ) {
						update_post_meta( $attendee->ID, 'tix_refund_reason', $reason );
						$this->log( 'Refund reason attached with data.', $attendee->ID, $reason, 'refund' );
					}

					$this->info( __( 'Your tickets have been successfully refunded.', 'camptix' ) );
					return $this->form_refund_success();
				} else {
					$this->error( __( 'Can not refund the transaction at this time. Please try again later.', 'camptix' ) );
				}
			}
		}

		ob_start();
		?>
		<div id="tix">
			<?php do_action( 'camptix_notices' ); ?>
			<form action="<?php echo esc_url( add_query_arg( 'tix_action', 'refund_request' ) ); ?>#tix" method="POST">
				<input type="hidden" name="tix_refund_request_submit" value="1" />

				<h2><?php _e( 'Refund Request', 'camptix' ); ?></h2>
				<table class="tix_tickets_table tix-attendee-form">
					<tbody>
						<tr>
							<th colspan="2">
								<?php _e( 'Request Details', 'camptix' ); ?>
							</th>
						</tr>
						<tr>
							<td class="tix-left"><?php _e( 'E-mail', 'camptix' ); ?></td>
							<td class="tix-right"><?php echo esc_html( $transaction['receipt_email'] ); ?></td>
						</tr>
						<tr>
							<td class="tix-left"><?php _e( 'Original Payment', 'camptix' ); ?></td>
							<td class="tix-right"><?php printf( "%s %s", esc_html( $this->options['currency'] ), esc_html( $transaction['payment_amount'] ) ); ?></td>
						</tr>
						<tr>
							<td class="tix-left"><?php _e( 'Purchased Tickets', 'camptix' ); ?></td>
							<td class="tix-right">
								<?php foreach ( $tickets as $ticket_id => $count ) : ?>
									<?php echo esc_html( sprintf( "%s x%d", $this->get_ticket_title( $ticket_id ), $count ) ); ?><br />
								<?php endforeach; ?>
							</td>
						</tr>
						<tr>
							<td class="tix-left"><?php _e( 'Refund Amount', 'camptix' ); ?></td>
							<td class="tix-right"><?php printf( "%s %s", esc_html( $this->options['currency'] ), esc_html( $transaction['payment_amount'] ) ); ?></td>
						</tr>
						<tr>
							<td class="tix-left"><?php _e( 'Refund Reason', 'camptix' ); ?></td>
							<td class="tix-right"><textarea name="tix_refund_request_reason"><?php echo esc_textarea( $reason ); ?></textarea></td>
						</tr>

					</tbody>
				</table>
				<p class="tix-description"><?php _e( 'Refunds can take up to several days to process. All of the tickets you purchased in the original transaction will be cancelled. We are not able to provide partial refunds and/or refunds to a different account than the original purchaser. You must agree to these terms before requesting a refund.', 'camptix' ); ?></p>
				<p class="tix-submit">
					<label><input type="checkbox" name="tix_refund_request_confirmed" value="1"> <?php _e( 'I agree to the above terms', 'camptix' ); ?></label>
					<input type="submit" value="<?php esc_attr_e( 'Send Request', 'camptix' ); ?>" />
					<br class="tix-clear" />
				</p>
			</form>
		</div><!-- #tix -->
		<?php
		$contents = ob_get_contents();
		ob_end_clean();
		return $contents;
	}

	function form_refund_success() {
		global $post;

		// Clean things up before and after the shortcode.
		$post->post_content = $this->shortcode_str;

		ob_start();
		?>
		<div id="tix">
			<?php do_action( 'camptix_notices' ); ?>
		</div>
		<?php
		$contents = ob_get_contents();
		ob_end_clean();
		return $contents;
	}

	/**
	 * Return true if an attendee_id is refundable.
	 */
	function is_refundable( $attendee_id ) {
		if ( ! $this->options['refunds_enabled'] )
			return false;

		$payment_method = get_post_meta( $attendee_id, 'tix_payment_method', true );
		$payment_method_obj = $this->get_payment_method_by_id( $payment_method );
		if ( ! $payment_method_obj || ! $payment_method_obj->supports_feature( 'refund-single' ) )
			return false;

		$today = date( 'Y-m-d' );
		$refunds_until = $this->options['refunds_date_end'];

		if ( ! strtotime( $refunds_until ) )
			return false;

		if ( strtotime( $refunds_until ) < strtotime( $today ) )
			return false;

		$attendee = get_post( $attendee_id );
		if ( $attendee->post_status == 'publish' && (float) get_post_meta( $attendee->ID, 'tix_order_total', true ) > 0 && get_post_meta( $attendee->ID, 'tix_transaction_id', true ) )
			return true;

		return false;
	}

	/**
	 * Return the tickets page URL.
	 */
	function get_tickets_url() {
		$tickets_url = home_url();

		if ( isset( $this->tickets_url ) && esc_url( $this->tickets_url ) )
			return $this->tickets_url;

		$tickets_url = get_permalink( $this->get_tickets_post_id() );
		if ( ! $tickets_url )
			$tickets_url = home_url();

		// "Cache" for the request and return.
		$this->tickets_url = $tickets_url;
		return $tickets_url;
	}

	/**
	 * Looks for the [camptix] page and returns the page's id.
	 */
	function get_tickets_post_id() {
		$params = apply_filters( 'camptix_get_tickets_post_id_params', array(
			'post_type' => 'page',
			'post_status' => 'publish',
			's' => '[camptix',
			'posts_per_page' => 50,
			'update_post_term_cache' => false,
			'update_post_meta_cache' => false,
		) );
		$posts = get_posts( $params );

		if ( ! $posts )
			return false;

		foreach ( $posts as $post ) {

			$matches = array();
			// Allow [camptix attr="value"] but not [camptix_attendees] etc.
			if ( ! preg_match( "#\\[camptix(\s[^\\]]+)?\\]#", $post->post_content, $matches ) )
				continue;

			return $post->ID;
		}

		return false;
	}

	/**
	 * Use this function to purge tickets page cache and update all counts.
	 * It sets a flag, but actual flushing happens only once during shutdown.
	 */
	function flush_tickets_page() {
		$this->flush_tickets_page = true;
	}

	function flush_tickets_page_seriously() {
		if ( ! isset( $this->flush_tickets_page ) || ! $this->flush_tickets_page )
			return;

		$tickets_post_id = $this->get_tickets_post_id();

		if ( ! $tickets_post_id )
			return;

		$page = get_post( $tickets_post_id );
		wp_update_post( $page );
		clean_post_cache( $tickets_post_id );

		// Super-cache compatibility.
		if ( function_exists( 'wp_cache_post_id_gc' ) )
			wp_cache_post_id_gc( $this->get_tickets_url(), $tickets_post_id );
	}

	function get_edit_attendee_link( $attendee_id, $edit_token ) {
		$tickets_url = $this->get_tickets_url();
		$edit_link = add_query_arg( array(
			'tix_action' => 'edit_attendee',
			'tix_attendee_id' => $attendee_id,
			'tix_edit_token' => $edit_token,
		), $tickets_url );

		// Anchor!
		$edit_link .= '#tix';
		return $edit_link;
	}

	function get_access_tickets_link( $access_token ) {
		$tickets_url = $this->get_tickets_url();
		$edit_link = add_query_arg( array(
			'tix_action' => 'access_tickets',
			'tix_access_token' => $access_token,
		), $tickets_url );

		$edit_link .= '#tix';
		return $edit_link;
	}

	function get_refund_tickets_link( $access_token ) {
		$tickets_url = $this->get_tickets_url();
		$edit_link = add_query_arg( array(
			'tix_action' => 'refund_request',
			'tix_access_token' => $access_token,
		), $tickets_url );

		$edit_link .= '#tix';
		return $edit_link;
	}

	function is_ticket_valid_for_display( $post_id ) {
		$post = get_post( $post_id );
		if ( ! $post ) return false;
		if ( $post->post_type != 'tix_ticket' ) return false;
		return true;
	}

	/**
	 * Returns true if a ticket is valid for purchase.
	 *
	 * @param WP_Post | int
	 *
	 * @return bool
	 */
	function is_ticket_valid_for_purchase( $post ) {
		if ( ! is_a( $post, 'WP_Post' ) ) {
			$post = get_post( $post );
		}

		if ( ! $post ) return false;
		if ( $post->post_type != 'tix_ticket' ) return false;
		if ( $post->post_status != 'publish' ) return false;

		$via_reservation = false;
		if ( isset( $this->reservation ) && $this->reservation )
			$via_reservation = $this->reservation['token'];

		if ( apply_filters( 'camptix_hide_empty_tickets', true ) && $this->get_remaining_tickets( $post->ID, $via_reservation ) < 1 ) return false;

		$start = get_post_meta( $post->ID, 'tix_start', true );
		$end = get_post_meta( $post->ID, 'tix_end', true );

		// Not started yet
		if ( ! empty( $start ) && strtotime( $start ) > time() )
			return false;

		// Already ended.
		if ( ! empty( $end ) && strtotime( $end . ' +1 day' ) < time() )
			return false;

		return true;
	}

	function get_ticket_title( $post_id ) {
		if ( $this->is_ticket_valid_for_display( $post_id ) && $post = get_post( $post_id ) )
			return $post->post_title;
	}

	/**
	 * Returns the number of remaining tickets according to number of published attendees.
	 * @todo maybe cache values and bust in purchase process.
	 */
	function get_remaining_tickets( $post_id, $via_reservation = false ) {
		$remaining = 0;
		if ( $this->is_ticket_valid_for_display( $post_id ) ) {
			$quantity = intval( get_post_meta( $post_id, 'tix_quantity', true ) );
			$remaining = $quantity - $this->get_purchased_tickets_count( $post_id );
		}

		// Look for reservations
		$reservations = $this->get_reservations( $post_id );
		foreach ( $reservations as $reservation ) {

			// If it's a reservation, don't subtract tickets.
			if ( $via_reservation && $reservation['token'] == $via_reservation && $reservation['ticket_id'] == $post_id )
				continue;

			// Subtract ones already purchased
			$reserved_tickets = $reservation['quantity'] - $this->get_purchased_tickets_count( $post_id, $reservation['token'] );
			$remaining -= $reserved_tickets;
		}

		return apply_filters( 'camptix_get_remaining_tickets', $remaining, $post_id, $via_reservation, $quantity, $reservations );
	}

	function get_purchased_tickets_count( $post_id, $via_reservation = false ) {
		$purchased = 0;

		$meta_query = array( array(
			'key' => 'tix_ticket_id',
			'value' => $post_id,
			'compare' => '=',
			'type' => 'CHAR',
		) );

		if ( $via_reservation ) {
			$meta_query[] = array(
				'key' => 'tix_reservation_token',
				'value' => $via_reservation,
				'compare' => '=',
				'type' => 'CHAR',
			);
		}

		$attendees = new WP_Query( array(
			'post_type' => 'tix_attendee',
			'posts_per_page' => 1,
			'post_status' => array( 'publish', 'pending' ),
			'meta_query' => $meta_query,
		) );

		if ( $attendees->found_posts > 0 )
			$purchased = $attendees->found_posts;

		return $purchased;
	}

	/**
	 * Return a coupon object by the coupon name (title).
	 */
	function get_coupon_by_code( $code ) {
		$code = trim( $code );
		if ( empty( $code ) )
			return false;

		$coupon = get_page_by_title( trim( $code ), OBJECT, 'tix_coupon' );
		if ( $coupon && $coupon->post_type == 'tix_coupon' ) {
			return $coupon;
		}

		return false;
	}

	/**
	 * Returns true if one con use a coupon.
	 */
	function is_coupon_valid_for_use( $coupon_id ) {
		$coupon = get_post( $coupon_id );
		if ( $coupon->post_type != 'tix_coupon' ) return false;
		if ( $coupon->post_status != 'publish' ) return false;
		if ( $this->get_remaining_coupons( $coupon->ID ) < 1 ) return false;

		$start = get_post_meta( $coupon->ID, 'tix_coupon_start', true );
		$end = get_post_meta( $coupon->ID, 'tix_coupon_end', true );

		if ( ! empty( $start ) && strtotime( $start ) > time() )
			return false;

		if ( ! empty( $end ) && strtotime( $end . ' +1 day' ) < time() )
			return false;

		return true;
	}

	/**
	 * Returns an array of all published coupons.
	 */
	function get_all_coupons() {
		$coupons = (array) get_posts( array(
			'post_type' => 'tix_coupon',
			'post_status' => 'publish',
			'posts_per_page' => -1,
		) );

		return $coupons;
	}

	/**
	 * Return true if there's at least one coupon you can use.
	 */
	function have_coupons() {
		$coupons = $this->get_all_coupons();
		foreach ( $coupons as $coupon )
			if ( $this->is_coupon_valid_for_use( $coupon->ID ) )
				return true;

		return false;
	}

	/**
	 * Returns the number of available coupons by coupon_id
	 */
	function get_remaining_coupons( $coupon_id ) {
		$remaining = 0;
		$coupon = get_post( $coupon_id );
		if ( $coupon && $coupon->post_type == 'tix_coupon' ) {
			$quantity = intval( get_post_meta( $coupon->ID, 'tix_coupon_quantity', true ) );
			$remaining = $quantity;

			$used = $this->get_used_coupons_count( $coupon_id );
			$remaining -= $used;
		}
		return $remaining;
	}

	function get_used_coupons_count( $coupon_id ) {
		$used = 0;
		$coupon = get_post( $coupon_id );
		if ( $coupon && $coupon->post_type == 'tix_coupon' ) {
			$attendees = new WP_Query( array(
				'post_type' => 'tix_attendee',
				'posts_per_page' => 1,
				'post_status' => array( 'publish', 'pending' ),
				'meta_query' => array(
					array(
						'key' => 'tix_coupon_id',
						'value' => $coupon_id,
						'compare' => '=',
						'type' => 'CHAR',
					)
				),
			) );

			if ( $attendees->found_posts > 0 )
				$used += $attendees->found_posts;
		}
		return $used;
	}

	/**
	 * Review Timeout Payments
	 *
	 * This routine looks up old draft attendee posts and puts
	 * their status into Timeout.
	 */
	function review_timeout_payments() {

		// Nothing to do for archived sites.
		if ( $this->options['archived'] )
			return;

		$processed = 0;
		$current_loop = 1;
		$max_loops = 500;

		while ( $attendees = get_posts( array(
			'post_type' => 'tix_attendee',
			'post_status' => 'draft',
			'posts_per_page' => 100,
			'cache_results' => false,
			'meta_query' => array(
				array(
					'key' => 'tix_timestamp',
					'compare' => '<',
					'value' => time() - 60 * 60 * 24, // 24 hours ago
					'type' => 'NUMERIC',
				),
				array(
					'key' => 'tix_timestamp',
					'compare' => '>',
					'value' => 0,
					'type' => 'NUMERIC',
				),
			),
		) ) ) {

			foreach ( $attendees as $attendee ) {
				$attendee->post_status = 'timeout';
				wp_update_post( $attendee );
				$processed++;
			}

			// Just in case we get stuck in here
			if ( $current_loop++ >= $max_loops )
				break;
		}

		$this->log( sprintf( 'Reviewed timeout payments and set %d attendees to timeout status.', $processed ) );
	}

	/**
	 * Step 3: Uses a payment method to perform a checkout.
	 */
	function form_checkout() {
		global $post;

		// Clean things up before and after the shortcode.
		$post->post_content = $this->shortcode_str;

		$attendees = array();
		$errors = array();
		$receipt_email = false;
		$payment_method = false;

		if ( isset( $_POST['tix_payment_method'] ) && array_key_exists( $_POST['tix_payment_method'], $this->get_enabled_payment_methods() ) )
			$payment_method = $_POST['tix_payment_method'];
		elseif ( ! empty( $this->order['price'] ) && $this->order['price'] > 0 ) {
			$this->error_flags['invalid_payment_method'] = true;
		}

		foreach( (array) $_POST['tix_attendee_info'] as $i => $attendee_info ) {
			$attendee = new stdClass;

			if ( ! isset( $attendee_info['ticket_id'] ) || ! array_key_exists( $attendee_info['ticket_id'], $this->tickets_selected ) ) {
				$this->error_flags['no_ticket_id'] = true;
				continue;
			}

			$ticket = $this->tickets[ $attendee_info['ticket_id'] ];
			if ( ! $this->is_ticket_valid_for_purchase( $ticket->ID ) ) {
				$this->error_flags['tickets_excess'] = true;
				continue;
			}

			$attendee_info = array_map( 'trim', $attendee_info );

			$attendee_info['first_name'] = sanitize_text_field( $attendee_info['first_name'] );
			$attendee_info['last_name'] = sanitize_text_field( $attendee_info['last_name'] );

			$attendee_info = apply_filters( 'camptix_checkout_attendee_info', $attendee_info );

			if ( empty( $attendee_info['first_name'] ) || empty( $attendee_info['last_name'] ) )
				$this->error_flags['required_fields'] = true;

			if ( ! is_email( $attendee_info['email'] ) )
				$this->error_flags['invalid_email'] = true;

			$answers = array();
			if ( isset( $_POST['tix_attendee_questions'][ $i ] ) ) {
				$questions = $this->get_sorted_questions( $ticket->ID );

				foreach ( $questions as $question ) {
					if ( isset( $_POST['tix_attendee_questions'][ $i ][ $question->ID ] ) ) {
						$answer = $_POST['tix_attendee_questions'][ $i ][ $question->ID ];
						$answer = ( is_array( $answer ) ) ? array_map( 'strip_tags', $answer ) : strip_tags( $answer );
						$answers[ $question->ID ] = $answer;
					}

					if ( (bool) get_post_meta( $question->ID, 'tix_required', true ) && empty( $answers[ $question->ID ] ) ) {
						$this->error_flags['required_fields'] = true;
						break;
					}
				}
			}


			// @todo make more checks here

			$attendee->ticket_id = $ticket->ID;
			$attendee->first_name = $attendee_info['first_name'];
			$attendee->last_name = $attendee_info['last_name'];
			$attendee->email = $attendee_info['email'];
			$attendee->answers = $answers;

			$attendee = apply_filters( 'camptix_form_register_complete_attendee_object', $attendee, $attendee_info, $i );

			if ( isset( $_POST['tix_receipt_email'] ) && $_POST['tix_receipt_email'] == $i )
				$receipt_email = $attendee->email;

			$attendees[] = $attendee;

			unset( $attendee, $answers, $questions, $ticket );
		}

		// @todo maybe check if email is one of the attendees emails
		if ( isset( $_POST['tix_receipt_email_js'] ) && is_email( $_POST['tix_receipt_email_js'] ) )
			$receipt_email = $_POST['tix_receipt_email_js'];

		if ( ! is_email( $receipt_email ) )
			$this->error_flags['no_receipt_email'] = true;

		// If there's at least one error, don't proceed with checkout.
		if ( $this->error_flags ) {
			return $this->form_attendee_info();
		}

		$this->verify_order( $this->order );

		$reservation_quantity = 0;
		if ( isset( $this->reservation ) && $this->reservation )
			$reservation_quantity = $this->reservation['quantity'];

		$log_data = array(
			'post' => $_POST,
			'server' => $_SERVER,
		);

		$access_token = md5( 'tix-access-token' . print_r( $_POST, true ) . time() . rand( 1, 9999 ) );
		$payment_token = md5( 'tix-payment-token' . $access_token . time() . rand( 1, 9999 ) );

		foreach ( $attendees as $attendee ) {
			$post_id = wp_insert_post( array(
				'post_title' => $this->format_name_string( "%first% %last%", $attendee->first_name, $attendee->last_name ),
				'post_type' => 'tix_attendee',
				'post_status' => 'draft',
			) );

			if ( $post_id ) {
				$this->log( 'Created attendee draft.', $post_id, $log_data );

				$edit_token = md5( sprintf( 'tix-edit-token-%d-%s-%s', $post_id, $access_token, time() ) );

				update_post_meta( $post_id, 'tix_access_token', $access_token );
				update_post_meta( $post_id, 'tix_payment_token', $payment_token );
				update_post_meta( $post_id, 'tix_edit_token', $edit_token );
				update_post_meta( $post_id, 'tix_payment_method', $payment_method );
				update_post_meta( $post_id, 'tix_order', $this->order );

				update_post_meta( $post_id, 'tix_timestamp', time() );
				update_post_meta( $post_id, 'tix_ticket_id', $attendee->ticket_id );
				update_post_meta( $post_id, 'tix_first_name', $attendee->first_name );
				update_post_meta( $post_id, 'tix_last_name', $attendee->last_name );
				update_post_meta( $post_id, 'tix_email', $attendee->email );
				update_post_meta( $post_id, 'tix_tickets_selected', $this->tickets_selected );
				update_post_meta( $post_id, 'tix_receipt_email', $receipt_email );

				do_action( 'camptix_checkout_update_post_meta', $post_id, $attendee );

				// Cash
				update_post_meta( $post_id, 'tix_order_total', (float) $this->order['total'] );
				update_post_meta( $post_id, 'tix_ticket_price', (float) $this->tickets[ $attendee->ticket_id ]->tix_price );
				update_post_meta( $post_id, 'tix_ticket_discounted_price', (float) $this->tickets[ $attendee->ticket_id ]->tix_discounted_price );

				// @todo sanitize questions
				update_post_meta( $post_id, 'tix_questions', $attendee->answers );

				if ( $this->coupon && in_array( $attendee->ticket_id, $this->coupon->tix_applies_to ) ) {
					update_post_meta( $post_id, 'tix_coupon_id', $this->coupon->ID );
					update_post_meta( $post_id, 'tix_coupon', $this->coupon->post_title );
				}

				if ( isset( $this->reservation ) && $this->reservation && $this->reservation['ticket_id'] == $attendee->ticket_id ) {
					if ( $reservation_quantity > 0 ) {
						update_post_meta( $post_id, 'tix_reservation_id', $this->reservation['id'] );
						update_post_meta( $post_id, 'tix_reservation_token', $this->reservation['token'] );
						$reservation_quantity--;
					}
				}

				// Write post content (triggers save_post).
				wp_update_post( array( 'ID' => $post_id ) );
				$attendee->post_id = $post_id;
			}
		}

		$attendees_posts = array();
		foreach ( $attendees as $attendee )
			$attendees_posts[] = get_post( $attendee->post_id );

		$attendees = $attendees_posts;
		unset( $attendees_posts, $attendee );

		// Do we need to pay?
		if ( $this->order['total'] > 0 ) {

			$payment_method_obj = $this->get_payment_method_by_id( $payment_method );

			// Bail if a payment method does not exist.
			if ( ! $payment_method_obj ) {
				$payment_data = array(
					'error' => 'Invalid payment method.',
					'data' => $_POST,
				);

				$this->payment_result( $payment_token, self::PAYMENT_STATUS_FAILED, $payment_data );
				return;
			}

			/**
			 * @todo: Better error messaging for misconfigured payment methods
			 */
			$result = $payment_method_obj->payment_checkout( $payment_token );
			if ( self::PAYMENT_STATUS_FAILED == $result ) {
				return $this->form_attendee_info();
			}

			return $result;

		} else { // free beer for everyone!
			$this->payment_result( $payment_token, self::PAYMENT_STATUS_COMPLETED );
		}
	}

	/**
	 * Verify an order
	 */
	function verify_order( &$order = array() ) {
		$tickets_objects = get_posts( array(
			'post_type' => 'tix_ticket',
			'post_status' => 'publish',
			'posts_per_page' => -1,
		) );

		$coupon = null;
		$reservation = null;
		$via_reservation = false;
		$max_tickets_per_order = apply_filters( 'camptix_max_tickets_per_order', 10 );

		// Let's check the coupon first.
		if ( isset( $order['coupon'] ) && ! empty( $order['coupon'] ) ) {
			$coupon = $this->get_coupon_by_code( $order['coupon'] );
			if ( $coupon && $this->is_coupon_valid_for_use( $coupon->ID ) ) {
				$coupon->tix_coupon_remaining = $this->get_remaining_coupons( $coupon->ID );
				$coupon->tix_discount_price = (float) get_post_meta( $coupon->ID, 'tix_discount_price', true );
				$coupon->tix_discount_percent = (int) get_post_meta( $coupon->ID, 'tix_discount_percent', true );
				$coupon->tix_applies_to = (array) get_post_meta( $coupon->ID, 'tix_applies_to' );
			} else {
				$order['coupon'] = null;
				$coupon = null;
				$this->error_flag( 'invalid_coupon' );
			}
		} else {
			$order['coupon'] = null;
			$coupon = null;
		}

		// Then check the reservation.
		if ( isset( $order['reservation_id'], $order['reservation_token'] ) ) {
			$reservation = $this->get_reservation( $order['reservation_token'] );

			if ( $reservation && $reservation['id'] == strtolower( $order['reservation_id'] ) && $this->is_reservation_valid_for_use( $reservation['token'] ) ) {
				$via_reservation = $reservation['token'];
			} else {
				$this->error_flags['invalid_reservation'] = true;
				$reservation = null;
				$via_reservation = false;
			}
		}

		$tickets = array();
		foreach ( $tickets_objects as $ticket ) {
			$ticket->tix_price = (float) get_post_meta( $ticket->ID, 'tix_price', true );
			$ticket->tix_remaining = $this->get_remaining_tickets( $ticket->ID, $via_reservation );
			$ticket->tix_coupon_applied = false;
			$ticket->tix_discounted_price = $ticket->tix_price;

			if ( $coupon && in_array( $ticket->ID, $coupon->tix_applies_to ) ) {
				$ticket->tix_coupon_applied = true;
				$ticket->tix_discounted_text = '';

				if ( $coupon->tix_discount_price > 0 ) {
					$ticket->tix_discounted_price = number_format( $ticket->tix_price - $coupon->tix_discount_price, 2, '.', '' );
				} elseif ( $coupon->tix_discount_percent > 0 ) {
					$ticket->tix_discounted_price = number_format( $ticket->tix_price - ( $ticket->tix_price * $coupon->tix_discount_percent / 100 ), 2, '.', '' );
				}

				if ( $ticket->tix_discounted_price < 0 )
					$ticket->tix_discounted_price = 0;
			}

			$tickets[ $ticket->ID ] = $ticket;
		}

		unset( $tickets_objects, $ticket );
		$coupon_used = 0;

		$items_clean = array();
		foreach ( $order['items'] as $item ) {

			/**
			 * @todo check items, reservation, coupon.
			 */

			if ( ! isset( $tickets[ $item['id'] ] ) ) {
				$this->error_flag( 'invalid_ticket_id' );
				continue;
			}

			$ticket = $tickets[ $item['id'] ];

			if ( $ticket->tix_remaining < 1 ) {
				$this->error_flag( 'tickets_excess' );
				$this->log( 'Setting tickets excess', null, array( $order, $tickets ) );
				continue;
			}

			if ( $ticket->tix_remaining < $item['quantity'] ) {
				$item['quantity'] = $ticket->tix_remaining;
				$this->error_flag( 'tickets_excess' );
			}

			if ( $item['quantity'] > $max_tickets_per_order ) {
				$item['quantity'] = min( $max_tickets_per_order, $ticket->tix_remaining );
				$this->error_flag( 'tickets_excess' );
			}

			// Track coupons usage quantity.
			if ( $ticket->tix_coupon_applied ) {
				$coupon_used += $item['quantity'];
				if ( $coupon_used > $coupon->tix_coupon_remaining ) {

					// How much more coupons are we allowed to use?
					$quantity_allowed = $coupon->tix_coupon_remaining - ( $coupon_used - $item['quantity'] );

					// Revert the # of used coupons.
					$coupon_used = ( $coupon_used - $item['quantity'] );

					// Set the new allowed quantity and add it to used coupons.
					$item['quantity'] = $quantity_allowed;
					$coupon_used += $item['quantity'];

					$this->error_flag( 'coupon_excess' );
				}
			}

			// Don't add empty items.
			if ( $item['quantity'] < 1 )
				continue;

			// Check pricing
			if ( (float) $item['price'] != (float) $ticket->tix_discounted_price ) {
				$this->error_flag( 'tickets_price_error' );
				continue;
			}

			$items_clean[] = $item;
		}

		// Clean up the original array.
		$order['items'] = $items_clean;
		unset( $items_clean );

		if ( count( $order['items'] ) < 1 )
			$this->error_flag( 'no_tickets_selected' );

		// Recount the total.
		$order['total'] = 0;
		foreach ( $order['items'] as $item )
			$order['total'] += $item['price'] * $item['quantity'];

		if ( ! empty( $this->error_flags ) ) {

			if ( isset( $_GET['tix_action'] ) && 'attendee_info' == $_GET['tix_action'] ) {
				// print_r($this->error_flags);
			} elseif( isset( $_GET['tix_action'] ) && 'checkout' == $_GET['tix_action'] ) {
				// print_r($this->error_flags);
			} else {
				$this->redirect_with_error_flags();
			}
		}

		return true;
	}

	/**
	 * Get's a piece of post meta data associated with a payment token
	 *
	 * @param string $payment_token
	 * @param string $field The name of the post meta field, e.g., 'tix_transaction_id'
	 * @return mixed
	 */
	function get_post_meta_from_payment_token( $payment_token, $field ) {
		$attendees = $this->get_attendees_from_payment_token( $payment_token );
		if ( isset( $attendees[0]->ID ) )
			$data = get_post_meta( $attendees[0]->ID, $field, true );
		else
			$data = false;

		return $data;
	}

	/**
	 * Retrieves the attendee associated with a given the payment token
	 *
	 * @param string $payment_token
	 * @return array
	 */
	function get_attendees_from_payment_token( $payment_token ) {
		$cache_key = md5( 'get_attendees_from_payment_token' . $payment_token );
		$attendees = $this->tmp( $cache_key );

		if ( null === $attendees ) {
			$attendees = get_posts( array(
				'post_type'      => 'tix_attendee',
				'posts_per_page' => -1,
				'post_status'    => array( 'draft', 'pending', 'publish', 'cancel', 'refund', 'failed' ),
				'meta_query'     => array(
					array(
						'key'    => 'tix_payment_token',
						'value'  => $payment_token,
					)
				),
			) );

			$this->tmp( $cache_key, $attendees );
		}

		return $attendees;
	}

	/**
	 * Returns a payment method class object by id/key.
	 */
	function get_payment_method_by_id( $id ) {
		$payment_method = apply_filters( 'camptix_get_payment_method_by_id', null, $id );
		return $payment_method;
	}

	/**
	 * Get payment method name by attendee id
	 *
	 * @param int $attendee_id
	 * @return string
	 */
	function get_payment_method_name_by_attendee_id( $attendee_id ) {
		$id     = get_post_meta( absint( $attendee_id ), 'tix_payment_method', true );
		$method = $this->get_payment_method_by_id( $id );

		return isset( $method->name ) ? $method->name : $id;
	}

	function get_available_payment_methods() {
		return (array) apply_filters( 'camptix_available_payment_methods', array() );
	}

	function get_enabled_payment_methods() {
		$enabled = array();
		foreach ( $this->get_available_payment_methods() as $key => $method )
			if ( isset( $this->options['payment_methods'][ $key ] ) && $this->options['payment_methods'][ $key ] )
				if ( $this->get_payment_method_by_id( $key )->supports_currency( $this->options['currency'] ) )
					$enabled[ $key ] = $method;

		return $enabled;
	}

	function payment_result( $payment_token, $result, $data = array() ) {
		if ( empty( $payment_token ) )
			die( 'Do not call payment_result without a payment token.' );

		$attendees = get_posts( array(
			'posts_per_page' => -1,
			'post_type' => 'tix_attendee',
			'post_status' => array( 'draft', 'pending', 'publish', 'cancel', 'refund', 'failed' ),
			'meta_query' => array(
				array(
					'key' => 'tix_payment_token',
					'compare' => '=',
					'value' => $payment_token,
					'type' => 'CHAR',
				),
			),
		) );

		if ( ! $attendees ) {
			$this->log( 'Could not find attendees by payment token', null, $_POST );
			die();
		}

		$transaction_id = null;
		$transaction_details = null;
		$attendees_status = $attendees[0]->post_status;
		$status_changed = false;

		// If this is not the first payment result, let's get the old txn details before updating.
		if ( $attendees_status != 'draft' ) {
			$transaction_id = get_post_meta( $attendees[0]->ID, 'tix_transaction_id', true );
			$transaction_details = get_post_meta( $attendees[0]->ID, 'tix_transaction_details', true );
		}

		if ( ! empty( $data['transaction_id'] ) )
			$transaction_id = $data['transaction_id'];

		if ( ! empty( $data['transaction_details'] ) )
			$transaction_details = $data['transaction_details'];

		foreach ( $attendees as $attendee ) {

			$old_post_status = $attendee->post_status;

			update_post_meta( $attendee->ID, 'tix_transaction_id', $transaction_id );
			update_post_meta( $attendee->ID, 'tix_transaction_details', $transaction_details );

			if ( self::PAYMENT_STATUS_CANCELLED == $result ) {
				$attendee->post_status = 'cancel';
				wp_update_post( $attendee );
			}

			if ( self::PAYMENT_STATUS_FAILED == $result ) {
				$attendee->post_status = 'failed';
				wp_update_post( $attendee );
			}

			if ( self::PAYMENT_STATUS_COMPLETED == $result ) {
				$attendee->post_status = 'publish';
				wp_update_post( $attendee );
			}

			if ( self::PAYMENT_STATUS_PENDING == $result ) {
				$attendee->post_status = 'pending';
				wp_update_post( $attendee );
			}

			if ( self::PAYMENT_STATUS_REFUNDED == $result ) {
				$attendee->post_status = 'refund';
				wp_update_post( $attendee );
				update_post_meta( $attendee->ID, 'tix_refund_transaction_id', $data['refund_transaction_id'] );
				update_post_meta( $attendee->ID, 'tix_refund_transaction_details', $data['refund_transaction_details'] );
				$this->log( sprintf( 'Refunded %s by user request in %s.', $transaction_id, $data['refund_transaction_id'] ), $attendee->ID, $data, 'refund' );
			}

			if ( self::PAYMENT_STATUS_REFUND_FAILED == $result ) {
				return $result;
			}

			$this->log( sprintf( 'Payment result for %s.', $transaction_id ), $attendee->ID, $data );

			if ( $old_post_status != $attendee->post_status ) {
				$status_changed = true;
				$this->log( sprintf( 'Attendee status has been changed to %s', $attendee->post_status ), $attendee->ID );
			} else {
				$this->log( sprintf( 'Received payment result for %s but status has not changed.', $transaction_id ), $attendee->ID );
			}
		}

		// We'll need these for proper e-mail notifications.
		$from_status = $attendees_status;
		$to_status = $attendees[0]->post_status;

		// If the status hasn't changed, there's nothing much we can do here.
		if ( ! $status_changed ) {
			if ( in_array( $to_status, array( 'pending', 'publish' ) ) ) {
				// Show the purchased tickets.
				$access_token = get_post_meta( $attendees[0]->ID, 'tix_access_token', true );
				$url = add_query_arg( array( 'tix_action' => 'access_tickets', 'tix_access_token' => $access_token ), $this->get_tickets_url() );
				wp_safe_redirect( $url . '#tix' );
				die();
			}
			return;
		}

		// Send out the tickets and receipt if necessary.
		$this->email_tickets( $payment_token, $from_status, $to_status );
		do_action( 'camptix_payment_result', $payment_token, $result, $data );

		// Let's make a clean exit out of all of this.
		switch ( $result ) :

			case self::PAYMENT_STATUS_CANCELLED :
				$this->error_flag( 'payment_cancelled' );
				$this->redirect_with_error_flags();
				die();
				break;

			case self::PAYMENT_STATUS_COMPLETED :

				// Show the purchased tickets.
				$access_token = get_post_meta( $attendees[0]->ID, 'tix_access_token', true );
				$url = add_query_arg( array( 'tix_action' => 'access_tickets', 'tix_access_token' => $access_token ), $this->get_tickets_url() );
				wp_safe_redirect( $url . '#tix' );
				die();
				break;

			case self::PAYMENT_STATUS_FAILED :
				$error_code = 0;
				if ( ! empty( $data['error_code'] ) )
					$error_code = $data['error_code'];

				// If payment errors were immediate (right on the checkout page), return.
				if ( isset( $_GET['tix_action'] ) && 'checkout' == $_GET['tix_action'] ) {
					$this->error_flag( 'payment_failed' );
					// $this->error_data['boogie'] = 'woogie'; // @todo Add error data and parse it
					return $result;

				} else {
					$this->error_flag( 'payment_failed' );
					$this->redirect_with_error_flags();
					die();
				}
				break;

			case self::PAYMENT_STATUS_PENDING :

				// Show the purchased tickets.
				$access_token = get_post_meta( $attendees[0]->ID, 'tix_access_token', true );
				$url = add_query_arg( array( 'tix_action' => 'access_tickets', 'tix_access_token' => $access_token ), $this->get_tickets_url() );
				wp_safe_redirect( $url . '#tix' );
				die();
				break;

			case self::PAYMENT_STATUS_REFUNDED :
				return $result;
				break;

			default:
				break;

		endswitch;
	}

	function email_tickets( $payment_token = false, $from_status = 'draft', $to_status = 'publish' ) {
		global $shortcode_tags;

		if ( ! $payment_token )
			return;

		$attendees = get_posts( array(
			'posts_per_page' => -1,
			'post_type' => 'tix_attendee',
			'post_status' => 'any',
			'meta_query' => array(
				array(
					'key' => 'tix_payment_token',
					'compare' => '=',
					'value' => $payment_token,
					'type' => 'CHAR',
				),
			),
		) );

		if ( ! $attendees )
			return;

		// Remove all shortcodes before sending the e-mails, but bring them back later.
		$this->removed_shortcodes = $shortcode_tags;
		remove_all_shortcodes();

		do_action( 'camptix_init_email_templates_shortcodes' );

		$access_token = get_post_meta( $attendees[0]->ID, 'tix_access_token', true );
		$receipt_email = get_post_meta( $attendees[0]->ID, 'tix_receipt_email', true );
		$order = get_post_meta( $attendees[0]->ID, 'tix_order', true );

		$receipt_content = '';
		foreach ( $order['items'] as $item ) {
			$ticket = get_post( $item['id'] );
			$receipt_content .= sprintf( "* %s (%s) x%d = %s\n", $ticket->post_title, $this->append_currency( $item['price'], false ), $item['quantity'], $this->append_currency( $item['price'] * $item['quantity'], false ) );
		}

		if ( isset( $order['coupon'] ) && $order['coupon'] )
			$receipt_content .= sprintf( '* ' . __( 'Coupon used: %s', 'camptix' ) . "\n", $order['coupon'] );

		$receipt_content .= sprintf( "* " . __( 'Total: %s', 'camptix' ), $this->append_currency( $order['total'], false ) );
		$signature = apply_filters( 'camptix_ticket_email_signature', __( 'Let us know if you have any questions!', 'camptix' ) );

		// Set the tmp receipt for shortcodes use.
		$this->tmp( 'receipt', $receipt_content );

		foreach ( $attendees as $attendee ) {
			$attendee_email = $this->get_attendee_email( $attendee->ID );

			if ( $attendee_email == $receipt_email ) {
				$this->tmp( 'buyer_full_name', get_post_meta( $attendee->ID, 'tix_first_name', true ) . ' ' . get_post_meta( $attendee->ID, 'tix_last_name', true ) );
			}
		}

		/**
		 * If there's more than one attendee we should e-mail a separate ticket to each attendee,
		 * but only if the payment was from draft to completed or pending.For non-draft to ... tickets
		 * we send out a receipt only.
		 */
		if ( count( $attendees ) > 1 && $from_status == 'draft' && ( in_array( $to_status, array( 'publish', 'pending' ) ) ) ) {
			foreach ( $attendees as $attendee ) {
				$attendee_email = $this->get_attendee_email( $attendee->ID );
				$edit_token = get_post_meta( $attendee->ID, 'tix_edit_token', true );
				$edit_link = $this->get_edit_attendee_link( $attendee->ID, $edit_token );

				$this->tmp( 'attendee_id', $attendee->ID );
				$this->tmp( 'ticket_url', $edit_link );

				$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_multiple_purchase', $attendee );
				$content = do_shortcode( $this->options[ $email_template ] );

				$subject = sprintf( __( "Your Ticket to %s", 'camptix' ), $this->options['event_name'] );

				$this->log( sprintf( 'Sent ticket e-mail to %s and receipt to %s.', $attendee_email, $receipt_email ), $attendee->ID );
				$this->wp_mail( $attendee_email, $subject, $content );

				do_action( 'camptix_ticket_emailed', $attendee->ID );
			}
		}

		/**
		 * If an order with multiple attendees is refunded, let all of them know
		 * Don't send one to the attendee who placed the order, though, because they'll get a separate notification
		 */
		if ( count( $attendees ) > 1 && 'publish' == $from_status && 'refund' == $to_status ) {
			$this->tmp( 'ticket_url', $this->get_tickets_url() );

			foreach ( $attendees as $attendee ) {
				$attendee_email = $this->get_attendee_email( $attendee->ID );

				if ( $attendee_email != $receipt_email ) {
					$subject = sprintf( __( "Your Refund for %s", 'camptix' ), $this->options['event_name'] );
					$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_multiple_refund', $attendee );
					$content = do_shortcode( $this->options[ $email_template ] );

					$this->log( sprintf( 'Sending refund e-mail notification to %s.', $attendee_email ), $attendees[0]->ID );
					$this->wp_mail( $attendee_email, $subject, $content );

					do_action( 'camptix_refund_emailed', $attendee->ID );
				}
			}
		}

		/**
		 * Let's now e-mail the receipt, directly after a purchase has been made.
		 */
		if ( $from_status == 'draft' && ( in_array( $to_status, array( 'publish', 'pending' ) ) ) ) {

			// Fetch the attendee who's supposed to get the receipt.
			$receipt_attendee = $attendees[0]; // default to the first one.
			foreach ( $attendees as $attendee ) {
				if ( $receipt_email == get_post_meta( $attendee->ID, 'tix_email', true ) ) {
					$receipt_attendee = $attendee;
					break;
				}
			}

			$edit_link = $this->get_access_tickets_link( $access_token );
			$payment_status = '';
			$this->tmp( 'ticket_url', $edit_link );
			$this->tmp( 'attendee_id', $receipt_attendee->ID );

			// If the status is pending, let the buyer know about that in the receipt.
			if ( 'pending' == $to_status )
				$payment_status =  sprintf( __( 'Your payment status is: %s. You will receive a notification e-mail once your payment is completed.', 'camptix' ), 'pending' ) . "\n\n";

			if ( count( $attendees ) == 1 ) {

				$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_single_purchase', $attendees[0] );
				$content = do_shortcode( $this->options[ $email_template ] );

				$subject = sprintf( __( "Your Ticket to %s", 'camptix' ), $this->options['event_name'] );

				$this->log( sprintf( 'Sent a ticket and receipt to %s.', $receipt_email ), $receipt_attendee->ID );
				$this->wp_mail( $receipt_email, $subject, $content );

				do_action( 'camptix_ticket_emailed', $receipt_attendee->ID );

			} elseif ( count( $attendees ) > 1 ) {

				$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_multiple_purchase_receipt', $attendees[0] );
				$content = do_shortcode( $this->options[ $email_template ] );

				$subject = sprintf( __( "Your Tickets to %s", 'camptix' ), $this->options['event_name'] );

				$this->log( sprintf( 'Sent a receipt to %s.', $receipt_email ), $receipt_attendee->ID );
				$this->wp_mail( $receipt_email, $subject, $content );
			}
		}

		/**
		 * This is mainly for notifications that would set the status after an IPN.
		 */
		if ( $from_status == 'pending' && $to_status == 'publish' ) {
			$this->tmp( 'ticket_url', $this->get_access_tickets_link( $access_token ) );
			$subject = sprintf( __( "Your Payment for %s", 'camptix' ), $this->options['event_name'] );
			$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_pending_succeeded', $attendees[0] );
			$content = do_shortcode( $this->options[ $email_template ] );

			$this->log( sprintf( 'Sending completed e-mail notification after IPN to %s.', $receipt_email ), $attendees[0]->ID );
			$this->wp_mail( $receipt_email, $subject, $content );
		}

		if ( $from_status == 'pending' && $to_status == 'failed' ) {
			$this->tmp( 'ticket_url', $this->get_tickets_url() );
			$subject = sprintf( __( "Your Payment for %s", 'camptix' ), $this->options['event_name'] );
			$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_pending_failed', $attendees[0] );
			$content = do_shortcode( $this->options[ $email_template ] );

			$this->log( sprintf( 'Sending failed e-mail notification after IPN to %s.', $receipt_email ), $attendees[0]->ID );
			$this->wp_mail( $receipt_email, $subject, $content );
		}

		if ( $from_status == 'publish' && $to_status == 'refund' ) {
			$this->tmp( 'ticket_url', $this->get_tickets_url() );
			$subject = sprintf( __( "Your Refund for %s", 'camptix' ), $this->options['event_name'] );
			$email_template = apply_filters( 'camptix_email_tickets_template', 'email_template_single_refund', $attendees[0] );
			$content = do_shortcode( $this->options[ $email_template ] );

			$this->log( sprintf( 'Sending refund e-mail notification to %s.', $receipt_email ), $attendees[0]->ID );
			$this->wp_mail( $receipt_email, $subject, $content );
		}

		$this->tmp( 'attendee_id', false );
		$this->tmp( 'ticket_url', false );
		$this->tmp( 'receipt', false );

		// Bring the original shortcodes back.
		$shortcode_tags = $this->removed_shortcodes;
		$this->removed_shortcodes = array();
	}

	/**
	 * Get the given attendee's e-mail address
	 *
	 * @param int $attendee_id
	 *
	 * @return string
	 */
	protected function get_attendee_email( $attendee_id ) {
		return apply_filters( 'camptix_get_attendee_email', get_post_meta( $attendee_id, 'tix_email', true ), $attendee_id );
	}

	function redirect_with_error_flags( $query_args = array() ) {
		$query_args['tix_error'] = 1;
		$query_args['tix_errors'] = array();
		$query_args['tix_error_data'] = array();

		foreach ( (array) $this->error_flags as $key => $value )
			if ( $value ) $query_args['tix_errors'][] = $key;

		foreach ( (array) $this->error_data as $key => $value )
			$query_args['tix_error_data'][$key] = $value;

		$url = esc_url_raw( add_query_arg( $query_args, $this->get_tickets_url() ) . '#tix' );
		wp_safe_redirect( $url );
		die();
	}

	/*
	 * Set an error flag
	 *
	 * @param string $flag
	 */
	function error_flag( $flag ) {
		$this->error_flags[ $flag ] = true;
		return;
	}

	/**
	 * Sorts an array by the 'order' key.
	 */
	private function usort_by_order( $a, $b ) {
		$a = intval( $a['order'] );
		$b = intval( $b['order'] );
		if ( $a == $b ) return 0;
		return ( $a < $b ) ? -1 : 1;
	}

	/**
	 * Sorts an array by the 'count' keys.
	 */
	private function usort_by_count( $a, $b ) {
		$a = $a['count'];
		$b = $b['count'];

		if ( $a == $b ) return 0;
		return ( $a < $b ) ? 1 : -1;
	}

	public function notice( $notice ) {
		$this->notices[] = $notice;
	}

	public function error( $error ) {
		$this->errors[] = $error;
	}

	public function info( $info ) {
		$this->infos[] = $info;
	}

	protected function admin_notice( $notice ) {
		$this->admin_notices[] = $notice;
	}

	function do_notices() {

		$printed = array();
		$allowed_html = array_merge(
			array( 'p' => array( 'id' => true ) ),
			wp_kses_allowed_html( 'data' )
		);

		if ( count( $this->errors ) > 0 ) {
			echo '<div id="tix-errors">';
			foreach ( $this->errors as $message ) {
				if ( in_array( $message, $printed ) ) continue;

				$printed[] = $message;
				echo '<div class="tix-error">' . wp_kses( $message, $allowed_html ) . '</div>';
			}
			echo '</div><!-- #tix-errors -->';
		}

		if ( count( $this->notices ) > 0 ) {
			echo '<div id="tix-notices">';
			foreach ( $this->notices as $message ) {
				if ( in_array( $message, $printed ) ) continue;

				$printed[] = $message;
				echo '<div class="tix-notice">' . wp_kses( $message, $allowed_html ) . '</div>';
			}
			echo '</div><!-- #tix-notices -->';
		}

		if ( count( $this->infos ) > 0 ) {
			echo '<div id="tix-infos">';
			foreach ( $this->infos as $message ) {
				if ( in_array( $message, $printed ) ) continue;

				$printed[] = $message;
				echo '<div class="tix-info">' . wp_kses( $message, $allowed_html ) . '</div>';
			}
			echo '</div><!-- #tix-infos -->';
		}
	}

	/**
	 * Runs during admin_notices
	 */
	function do_admin_notices() {
		do_action( 'camptix_admin_notices' );

		// Signal when archived.
		if ( $this->options['archived'] )
			echo '<div class="updated"><p>' . __( 'CampTix is in <strong>archive mode</strong>. Please do not make any changes.', 'camptix' ) . '</p></div>';

		if ( is_array( $this->admin_notices ) && ! empty( $this->admin_notices) )
		foreach ( $this->admin_notices as $notice )
			printf( '<div class="updated"><p>%s</p></div>', $notice );
	}

	/**
	 * Add items to 'At a Glance' dashboard widget
	 *
	 * @param array $items Existing items
	 * @return array Modified items
	 */
	public function dashboard_glance_items( $items ) {
		$attendees = wp_count_posts( 'tix_attendee' );
		if ( current_user_can( $this->caps['manage_attendees'] ) ) {
			$post_type = get_post_type_object( 'tix_attendee' );
			$text = sprintf( _n( '%d Attendee', '%d Attendees', $attendees->publish ), $attendees->publish );
			$items[] = sprintf( '<a class="tix_attendee-count" href="%s">%s</a>',
				admin_url( 'edit.php?post_type=tix_attendee' ), esc_html( $text ) );
		}

		return $items;
	}

	/**
	 * Add something to the CampTix log. This function does nothing out of the box,
	 * but you can easily use an addon or create your own addon for logging. It's fairly
	 * easy, check out the addons directory.
	 */
	function log( $message, $post_id = 0, $data = null, $module = 'general' ) {
		do_action( 'camptix_log_raw', $message, $post_id, $data, $module );
	}

	function __destruct() {
	}

	function shutdown() {
		$this->flush_tickets_page_seriously();
	}

	/**
	 * Helper function to create admin tables, give me a
	 * $rows array and I'll do the rest.
	 */
	function table( $rows, $classes='widefat' ) {

		if ( ! is_array( $rows ) || ! isset( $rows[0] ) )
			return;

		$alt = '';
		?>
		<table class="tix-table <?php echo esc_attr( $classes ); ?>">
			<?php if ( ! is_numeric( implode( '', array_keys( $rows[0] ) ) ) ) : ?>
			<thead>
			<tr>
				<?php foreach ( array_keys( $rows[0] ) as $column ) : ?>
					<th class="tix-<?php echo esc_attr( sanitize_title_with_dashes( $column ) ); ?>">
						<?php echo wp_kses( $column, 'post' ); ?>
					</th>
				<?php endforeach; ?>
			</tr>
			</thead>
			<?php endif; ?>

			<tbody>
				<?php foreach ( $rows as $row ) : ?>
					<?php
						$alt = ( $alt == '' ) ? 'alternate' : '';
						$values = array_values( $row );
					?>
					<tr class="<?php echo esc_attr( $alt ); ?> tix-row-<?php echo sanitize_title_with_dashes( array_shift( $values ) ); ?>">
						<?php foreach ( $row as $column => $value ) : ?>
							<td class="tix-<?php echo esc_attr( sanitize_title_with_dashes( $column ) ); ?>">
								<span><?php echo wp_kses( $value, 'post' ); ?></span>
							</td>
						<?php endforeach; ?>
					</tr>
				<?php endforeach; ?>
			</tbody>
		</table>
		<?php
	}

	function wp_mail( $to, $subject, $message, $headers = array(), $attachments = '' ) {
		do_action( 'camptix_wp_mail_start' );

		// Allow plugins and addons to override any outgoing CampTix e-mail.
		if ( apply_filters( 'camptix_wp_mail_override', false, array(
			'to' => $to,
			'subject' => $subject,
			'message' => $message,
			'headers' => $headers,
			'$attachments' => $attachments,
		) ) ) {
			return;
		}

		add_filter( 'wp_mail_from_name', array( $this, 'set_mail_from_name' ) );

		if ( is_email( get_option( 'admin_email' ) ) ) {
			$headers[] = sprintf( 'Reply-To: %s <%s>', $this->options['event_name'], get_option( 'admin_email' ) );
		}
		$message_data = array( 'to' => $to, 'subject' => $subject, 'message' => $message, 'headers' => $headers );

		add_action( 'phpmailer_init', array( $this, 'maybe_send_html_email' ) );
		$results = wp_mail( $to, $subject, $message, $headers, $attachments );
		remove_action( 'phpmailer_init', array( $this, 'maybe_send_html_email' ) );
		$log_message = $results ? sprintf( 'Sent e-mail to %s.', $to ) : sprintf( 'E-mail to %s failed to send.', $to );
		$this->log( $log_message, null, $message_data, 'email' );

		do_action( 'camptix_wp_mail_finish' );
		return $results;
	}

	/**
	 * Set the name of the From header in outgoing e-mails
	 *
	 * In most WP installations, this just defaults to "WordPress", which could make attendees think that the
	 * e-mail is from the WordPress project, or they might not realize it's from the event and then delete it.
	 *
	 * @param string $name
	 *
	 * @return string
	 */
	public function set_mail_from_name( $name ) {
		return $this->options['event_name'];
	}

	/**
	 * Send the message as HTML if a 3rd party template is provided
	 *
	 * This is the first step towards providing HTML emails for CampTix. It provides the basic functionality, but
	 * relies on the user to render the HTML message via a filter. In the future, we can bundle a default template
	 * and turn it on by default, provided we solve any potential back-compat issues.
	 *
	 * This isn't the traditional way to send HTML e-mails in WordPress, because the bug described in #15448-core
	 * prevents multi-part content-types, which we want for better accessibility and lower spam scores.
	 *
	 * @param PHPMailer $phpmailer
	 */
	public function maybe_send_html_email( $phpmailer ) {
		$html_message = apply_filters( 'camptix_html_message', false, $phpmailer );

		if ( $html_message ) {
			$phpmailer->AltBody = strip_tags( $phpmailer->Body ); // setting AltBody automatically triggers a multi-part content-type
			$phpmailer->Body    = $html_message;
		}
	}

	/**
	 * Check if HTML emails are enabled
	 *
	 * Note: This is only intended for contexts where the caller wants to know if HTML messages are enabled, but
	 * not actually send one, like the Notify preview functionality.
	 *
	 * @return bool
	 */
	protected static function html_mail_enabled() {
		global $phpmailer;
		$enabled = false;

		if ( empty ( $phpmailer ) ) {
			wp_mail( '', '', '' );  // instantiate $phpmailer
		}

		if ( $html_message = apply_filters( 'camptix_html_message', false, $phpmailer ) ) {
			$enabled = true;
		}

		return $enabled;
	}

	/**
	 * Get the list of HTML tags allowed in e-mails
	 *
	 * This should be formatted the way that wp_kses() expects.
	 *
	 * @return array
	 */
	public static function get_allowed_html_mail_tags( $format = 'raw' ) {
		$tags = array(
			'address' => array(),
			'a' => array(
				'href' => true,
			),
			'b' => array(),
			'big' => array(),
			'blockquote' => array(),
			'br' => array(),
			'div' => array(
				'align' => true,
			),
			'font' => array(
				'color' => true,
				'face' => true,
				'size' => true,
			),
			'h1' => array(
				'align' => true,
			),
			'h2' => array(
				'align' => true,
			),
			'h3' => array(
				'align' => true,
			),
			'h4' => array(
				'align' => true,
			),
			'h5' => array(
				'align' => true,
			),
			'h6' => array(
				'align' => true,
			),
			'hr' => array(
				'align' => true,
				'noshade' => true,
				'size' => true,
				'width' => true,
			),
			'i' => array(),
			'img' => array(
				'alt' => true,
				'align' => true,
				'border' => true,
				'height' => true,
				'src' => true,
				'width' => true,
			),
			'li' => array(
				'align' => true,
				'value' => true,
			),
			'p' => array(
				'align' => true,
			),
			'pre' => array(
				'width' => true,
			),
			'q' => array(
				'cite' => true,
			),
			's' => array(),
			'span' => array(
				'align' => true,
			),
			'small' => array(),
			'strike' => array(),
			'strong' => array(),
			'sub' => array(),
			'sup' => array(),
			'u' => array(),
			'ul' => array(
				'type' => true,
			),
			'ol' => array(
				'start' => true,
				'type' => true,
			),
		);

		$tags = apply_filters( 'camptix_allowed_html_tags', $tags );

		if ( 'display' == $format ) {
			$tags = implode( ', ', array_keys( $tags ) );
		}

		return $tags;
	}

	/**
	 * Sanitize and format the contents of an HTML mail message
	 *
	 * @param string $message
	 *
	 * @return string
	 */
	public static function sanitize_format_html_message( $message ) {
		return make_clickable( wpautop( wp_kses( $message, self::get_allowed_html_mail_tags() ) ) );
	}

	/*
	 * Get a substring by bytes
	 *
	 * substr() truncates by characters rather than bytes, and mb_strcut() isn't always enabled.
	 *
	 * @param string $string
	 * @param int    $start
	 * @param int    $length
	 *
	 * @return string
	 */
	public static function substr_bytes( $string, $start, $length ) {
		$substr_function = 'mb_strcut';

		// Fall back to substr() when the `mbstring` extension is not enabled
		if ( ! function_exists( 'mb_strcut' ) ) {
			$substr_function = 'substr';

			// Some Unicode encodings use up to 6 bytes per character
			$length = ceil( $length / 6 );

			/*
			 * substr() is not multibyte-safe, so it can cut a character in half. The risk of that is reduced
			 * when using an even-numbered length.
			 */
			if ( $length > 2 && 0 !== $length % 2 ) {
				$length--;
			}
		}

		return call_user_func( $substr_function, $string, $start, $length );
	}

	/**
	 * Fired before $this->init()
	 * @todo maybe check $classname's inheritance tree and signal if it's not a CampTix_Addon
	 */
	function load_addons() {
		do_action( 'camptix_load_addons' );
		foreach ( $this->addons as $classname )
			if ( class_exists( $classname ) )
				$this->addons_loaded[] = new $classname;
	}

	/**
	 * Runs during camptix_load_addons, includes the necessary files to register default addons.
	 */
	function load_default_addons() {
		$default_addons = apply_filters( 'camptix_default_addons', array(
			'field-twitter'  => $this->get_default_addon_path( 'field-twitter.php' ),
			'field-url'      => $this->get_default_addon_path( 'field-url.php' ),
			'field-country'  => $this->get_default_addon_path( 'field-country.php' ),
			'field-tshirt'   => $this->get_default_addon_path( 'field-tshirt.php' ),
			'shortcodes'     => $this->get_default_addon_path( 'shortcodes.php' ),
			'payment-paypal' => $this->get_default_addon_path( 'payment-paypal.php' ),
			'logging-meta'   => $this->get_default_addon_path( 'logging-meta.php' ),

			/**
			 * The following addons are available but inactive by default. Do not uncomment
			 * but rather filter 'camptix_default_addons', otherwise your changes may be overwritten
			 * during an update to the plugin.
			 */

			// 'logging-file'  => $this->get_default_addon_path( 'logging-file.php' ),
			// 'logging-json'  => $this->get_default_addon_path( 'logging-file-json.php' ),
			// 'require-login' => $this->get_default_addon_path( 'require-login.php' ),
		) );

		foreach ( $default_addons as $filename )
			include_once $filename;
	}

	function get_default_addon_path( $filename ) {
		return plugin_dir_path( __FILE__ ) . 'addons/' . $filename;
	}

	/**
	 * Registers an addon class which is later loaded in $this->load_addons.
	 */
	public function register_addon( $classname ) {
		if ( did_action( 'camptix_init' ) ) {
			trigger_error( __( 'Please register your CampTix addons before CampTix is initialized.', 'camptix' ) );
			return false;
		}

		if ( ! class_exists( $classname ) ) {
			trigger_error( __( 'The CampTix addon you are trying to register does not exist.', 'camptix' ) );
			return false;
		}

		$this->addons[] = $classname;
		return true;
	}

	/**
	 * Temporary storage (non-persistent)
	 *
	 * Use this function to access the CampTix temporary storage for things like attendee_id
	 * for notify shortcodes, and receipt for e-mail templates, etc. You can also use it to
	 * store your own stuff, but don't forget to cleanup when you're done.
	 *
	 * @param $key string The key to access/store the value with.
	 * @param $value mixed An optional value when storing things.
	 */
	public function tmp( $key, $value = null ) {
		if ( null !== $value )
			$this->tmp[ $key ] = $value;

		if ( isset( $this->tmp[ $key ] ) )
			$value = $this->tmp[ $key ];

		return $value;
	}
}

// Initialize the $camptix global.
$GLOBALS['camptix'] = new CampTix_Plugin;