islandora_bagger_integration.module

<?php

use Symfony\Component\Yaml\Yaml;

/**
 * Implements hook_islandora_bagger_config_file_contents_alter().
 */
function islandora_bagger_integration_islandora_bagger_config_file_contents_alter($nid, &$config_file_contents) {
 if (\Drupal::moduleHandler()->moduleExists('context')) {
   $utils = \Drupal::service('islandora_bagger_integration.utils');

   $context_manager = \Drupal::service('context.manager');
   foreach ($context_manager->getActiveReactions('islandora_bagger_integration_config_options') as $reaction) {
     // Last one wins.
     $options = $reaction->execute();
   }
   $options_array = preg_split("/\\r\\n|\\r|\\n/", $options);
   $options_from_context = array();
   foreach ($options_array as $option) {
     list($option_key, $option_value) = explode(':', $option, 2);
     $options_from_context[trim($option_key)] = trim($option_value);
   }

   $config =  Yaml::parse($config_file_contents);
   foreach ($options_from_context as $key => $value) {
     // Skip options that have lists as values, process them below.
     $skip_keys = array('bag-info', 'drupal_basic_auth', 'drupal_media_tags', 'plugins', 'post_bag_scripts');
     if (!in_array($key, $skip_keys)) {
       // If key exists in config file, update value; if not, add it as an option.
       $config[$key] = $value;
     }
   }

   // Handle 'bag-info' separately since its value is a list of key:value pairs.
   if (array_key_exists('bag-info', $config) && array_key_exists('bag-info', $options_from_context)
     && strlen($options_from_context['bag-info'])) {
     $config = $utils->addBagInfoTags($config, $options_from_context['bag-info']);
   }

   // Handle 'plugins' separately since its value is a list of strings.
   foreach ($skip_keys as $key) {
     if ($key != 'bag-info') {
       if (array_key_exists($key, $config) && array_key_exists($key, $options_from_context)
         && strlen($options_from_context[$key])) {
         $config = $utils->addListConfigOptions($config, $key, $options_from_context[$key]);
       }
     }
   }

   // Reserialize the modified YAML into $config_file_contents.
   $config_file_contents = Yaml::dump($config);
 }
}