Issue #396 Admin Extension Screen

- Add admin_menu callback to admin
- Added require_once for extension file to WP_Stream
- Created base WP_Stream_Extension class
- Skeleton class methods to handle displaying, activating, downloading, authorizing premium extensions
- Should update routine #400 be initiated here?

includes/admin.php

@@ -16,13 +16,14 @@ class WP_Stream_Admin {
 	 */
 	public static $list_table = null;
 
-	const ADMIN_BODY_CLASS    = 'wp_stream_screen';
-	const RECORDS_PAGE_SLUG   = 'wp_stream';
-	const SETTINGS_PAGE_SLUG  = 'wp_stream_settings';
-	const ADMIN_PARENT_PAGE   = 'admin.php';
-	const VIEW_CAP            = 'view_stream';
-	const SETTINGS_CAP        = 'manage_options';
-	const PRELOAD_AUTHORS_MAX = 50;
+	const ADMIN_BODY_CLASS     = 'wp_stream_screen';
+	const RECORDS_PAGE_SLUG    = 'wp_stream';
+	const SETTINGS_PAGE_SLUG   = 'wp_stream_settings';
+	const EXTENSIONS_PAGE_SLUG = 'wp_stream_extensions';
+	const ADMIN_PARENT_PAGE    = 'admin.php';
+	const VIEW_CAP             = 'view_stream';
+	const SETTINGS_CAP         = 'manage_options';
+	const PRELOAD_AUTHORS_MAX  = 50;
 
 	public static function load() {
 		// User and role caps
@@ -119,6 +120,16 @@ public static function register_menu() {
 			array( __CLASS__, 'render_page' )
 		);
 
+		$extension_obj = new WP_Stream_Extensions();
+		self::$screen_id['extensions'] = add_submenu_page(
+			self::RECORDS_PAGE_SLUG,
+			__( 'Stream Extensions', 'stream' ),
+			__( 'Extensions', 'stream' ),
+			self::SETTINGS_CAP,
+			'wp_stream_extensions',
+			array( $extension_obj, 'render_page' )
+		);
+
 		// Register the list table early, so it associates the column headers with 'Screen settings'
 		add_action( 'load-' . self::$screen_id['main'], array( __CLASS__, 'register_list_table' ) );
 	}

includes/extensions.php

@@ -0,0 +1,211 @@
+<?php
+/**
+ * Extensions Class
+ *
+ * @author Chris Olbekson <chris@x-team.com
+ */
+
+class WP_Stream_Extensions {
+
+	const EXTENSIONS_KEY = 'wp_stream_extensions_';
+	const MEMBER_KEY     = 'wp_stream_member';
+	const DATA_API_URL   = 'https://wp-stream.com/json/';
+
+	var $extensions;
+
+	var $extension_data;
+
+	var $stream_member = false;
+
+	var $license_key = NULL;
+
+
+
+	function __construct() {
+		$this->extensions = $this->get_extension_data();
+
+	}
+
+	/**
+	 * Settings page callback hook. Renders the extensions page.
+	 *
+	 * @return void
+	 */
+	function render_page() {
+		?>
+		<div class="wrap">
+
+			<h2><?php _e( 'Stream Extensions', 'stream' ) ?></h2>
+			<?php settings_errors() ?>
+
+			<h1>Coming really, really soon. This is where the extensions will live.</h1>
+
+		</div>
+		<?php
+	}
+
+	/**
+	 * Gets the extension data from the wp-stream.com json extension api
+	 *
+	 * @return array
+	 */
+	function get_extension_api() {
+		return array();
+	}
+
+	/**
+	 * Activates membership to access premium extensions
+	 * stores a hashed membership key in the db
+	 *
+	 */
+	private function activate_membership() {
+		$license_key = wp_remote_get( self::DATA_API_URL, array() );
+		set_transient( self::MEMBER_KEY, array( 'license_key' => $license_key ), MINUTE_IN_SECONDS * 60 * 48 );
+		return $license_key;
+	}
+
+	/**
+	 * Verifies membership status of current active member
+	 *
+	 * @return bool true if membership active
+	 */
+	private function verify_membership() {
+		if ( false === ( $license_key = get_transient( self::MEMBER_KEY ) ) ) {
+			$license_key = $this->activate_membership();
+		}
+		if ( $license_key)
+		$key_hash = wp_hash_password( $license_key );
+		if ( ! $this->stream_member /** request to wp-stream.com */ ) {
+			/** Checks if the hash of the users key matches the hash of users key stored on wp-stream.com */
+			return wp_remote_get( self::DATA_API_URL, array( 'hashed_key' => $key_hash ) );
+		}
+		return false;
+	}
+
+	/**
+	 * Activates an already installed extension
+	 *
+	 */
+	function activate_extension( $extension ) {
+		if ( $this->verify_membership() ) {
+			$current = get_option( 'active_plugins' );
+			$plugin  = plugin_basename( trim( $extension ) );
+
+			if ( ! in_array( $plugin, $current ) ) {
+				$current[] = $plugin;
+				sort( $current );
+				do_action( 'activate_plugin', trim( $plugin ) );
+				update_option( 'active_plugins', $current );
+				do_action( 'activate_' . trim( $plugin ) );
+				do_action( 'activated_plugin', trim( $plugin ) );
+			}
+		}
+
+	}
+
+	function download_extension() {
+
+	}
+
+	function check_for_extension_updates() {
+
+	}
+
+	function update_extension() {
+		if ( $this->verify_membership() ) {
+			/** Call Update Extension Method  @see https://github.com/x-team/wp-stream/issues/400 */
+		}
+
+	}
+
+	/**
+	 * Checks for extension data stored in transient
+	 *
+	 * @return array|mixed
+	 */
+	function get_extension_data() {
+		if ( false === ( $api_transient = get_transient( self::EXTENSIONS_KEY ) ) ) {
+			$api_transient = $this->get_extension_api();
+
+			if ( $api_transient ) {
+				set_transient( self::EXTENSIONS_KEY, $this->get_extension_api(), MINUTE_IN_SECONDS * 60 * 12 * 2 );
+			}
+			return $api_transient;
+		}
+
+		return $api_transient;
+	}
+
+	/**
+	 * HTML Single extension display template
+	 *
+	 * @param $extension
+	 * @return void
+	 */
+	function extension_template( $extension ) {
+		?>
+		<script id="tmpl-theme-single" type="text/template">
+		<div class="theme-backdrop"></div>
+		<div class="theme-wrap">
+			<div class="theme-header">
+				<button class="left dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show previous theme' ); ?></span></button>
+				<button class="right dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Show next theme' ); ?></span></button>
+				<button class="close dashicons dashicons-no"><span class="screen-reader-text"><?php _e( 'Close overlay' ); ?></span></button>
+			</div>
+			<div class="theme-about">
+				<div class="theme-screenshots">
+				<# if ( data.screenshot[0] ) { #>
+					<div class="screenshot"><img src="{{ data.screenshot[0] }}" alt="" /></div>
+				<# } else { #>
+					<div class="screenshot blank"></div>
+				<# } #>
+			</div>
+
+			<div class="theme-info">
+				<# if ( data.active ) { #>
+					<span class="current-label"><?php _e( 'Current Theme' ); ?></span>
+				<# } #>
+				<h3 class="theme-name">{{{ data.name }}}<span class="theme-version"><?php printf( __( 'Version: %s' ), '{{{ data.version }}}' ); ?></span></h3>
+				<h4 class="theme-author"><?php printf( __( 'By %s' ), '{{{ data.authorAndUri }}}' ); ?></h4>
+
+				<# if ( data.hasUpdate ) { #>
+				<div class="theme-update-message">
+					<h4 class="theme-update"><?php _e( 'Update Available' ); ?></h4>
+					{{{ data.update }}}
+				</div>
+				<# } #>
+				<p class="theme-description">{{{ data.description }}}</p>
+
+				<# if ( data.parent ) { #>
+					<p class="parent-theme"><?php printf( __( 'This is a child theme of %s.' ), '<strong>{{{ data.parent }}}</strong>' ); ?></p>
+				<# } #>
+
+				<# if ( data.tags ) { #>
+					<p class="theme-tags"><span><?php _e( 'Tags:' ); ?></span> {{{ data.tags }}}</p>
+				<# } #>
+			</div>
+		</div>
+
+		<div class="theme-actions">
+			<div class="active-theme">
+				<a href="{{{ data.actions.customize }}}" class="button button-primary customize load-customize hide-if-no-customize"><?php _e( 'Customize' ); ?></a>
+				<?php echo esc_html( implode( ' ', $current_theme_actions ) ) ?>
+			</div>
+			<div class="inactive-theme">
+				<# if ( data.actions.activate ) { #>
+					<a href="{{{ data.actions.activate }}}" class="button button-primary activate"><?php _e( 'Activate' ); ?></a>
+				<# } #>
+				<a href="{{{ data.actions.customize }}}" class="button button-secondary load-customize hide-if-no-customize"><?php _e( 'Live Preview' ); ?></a>
+				<a href="{{{ data.actions.preview }}}" class="button button-secondary hide-if-customize"><?php _e( 'Preview' ); ?></a>
+			</div>
+
+			<# if ( ! data.active && data.actions['delete'] ) { #>
+				<a href="{{{ data.actions['delete'] }}}" class="button button-secondary delete-theme"><?php _e( 'Delete' ); ?></a>
+			<# } #>
+		</div>
+		</div>
+		</script>
+
+		<?php
+	}
+}

stream.php

@@ -113,6 +113,7 @@ private function __construct() {
 
 		if ( is_admin() ) {
 			require_once WP_STREAM_INC_DIR . 'admin.php';
+			require_once WP_STREAM_INC_DIR . 'extensions.php';
 			add_action( 'plugins_loaded', array( 'WP_Stream_Admin', 'load' ) );
 		}
 	}