<?php

module_load_include('inc', 'feeds_et', 'feeds_et.mappers');

/**
 * @file
 * Adds support for importing translations via Entity Translation.
 */

/**
 * Implements hook_feeds_plugins().
 */
function feeds_et_feeds_plugins() {
  $info = array();
  $info['FeedsEntityTranslation'] = array(
    'name' => 'Feeds: Entity Translation',
    'description' => 'Adds support for importing translations via Entity Translation.',
    'help' => 'Extends fields for all enabled languages when importing.',
    'handler' => array(
      'parent' => 'FeedsImporter',
      'class' => 'FeedsEntityTranslation',
      'file' => 'FeedsEntityTranslation.inc',
      'path' => drupal_get_path('module', 'feeds_et'),
    ),
  );
  return $info;
}

/**
 * Implements hook_feeds_processor_targets_alter().
 *
 * @param $targets array of target fields
 * @param $entity_type
 * @param $bundle_name
 */
function feeds_et_feeds_processor_targets_alter(&$targets, $entity_type, $bundle_name) {
  $translatable_entities = variable_get('entity_translation_entity_types', array());

  // If entity has Entity Translation enabled
  if (in_array($entity_type, array_values($translatable_entities))) {
    $fields = field_info_instances($entity_type, $bundle_name);
    foreach ($fields as $field_name => $field) {

       // If field is an original target
      if (in_array($field_name, array_keys($targets))) {
        $field_info = field_info_field($field_name);
        $original_target = $targets[$field_name];

        // If field is translatable, obviously! And we have implemented a callback for this target
        if ($field_info['translatable']){
          if(function_exists('_feeds_et_' . $targets[$field_name]['callback'])) {
            $languages = language_list('enabled');
            _feeds_et_process_targets($targets, $field_name, $original_target, $languages[1]);
          } else {
            // FIXME - This should be removed once we (Scratchpads Team) are happy
            // that all field types that should, have a callback.
            watchdog('feeds_et_missing_callback', $targets[$field_name]['callback']);
          }
        }
      }
    }
  }
}

/**
 * Populates and determines fields to reproduce per language.
 */
function _feeds_et_process_targets(&$targets, $field_name, $original_target, $field_languages) {
  $und_language = new stdClass();
  $und_language->name = t('Undefined language');
  $field_languages += array(LANGUAGE_NONE => $und_language);
  $callback = $targets[$field_name]['callback'];

  foreach ($field_languages as $language_code => $language_info) {
    
    // Add new targets to parse language along
    $targets[$field_name . ':et:' . $language_code] = array(
      'name' => t($original_target['name'] . ' [' . $language_info->name . ']'),
      'description' => t($original_target['description'] . ' [' . $language_info->name . ']'),
      'callback' => '_feeds_et_' . $callback,
    );

    // Remove the original target
    unset($targets[$field_name]);
  }
}