<?php

include_once('debut_media.features.inc');

/**
 * Implements hook_init().
 *
 * Add javascript and css required for the media browser link.
 */
function debut_media_init() {
  if (arg(0) == 'file' && is_null(arg(1))) {
    $path = drupal_get_path('module', 'media');
    $element['#attached'] = array(
      'js' => array($path . '/js/media.admin.js'),
      'css' => array($path . '/css/media.css'),
    );
    module_load_include('inc', 'media', 'includes/media.browser');
    media_attach_browser_js($element);
    // Render an empty element to add the js and css.
    drupal_render($element);
  }
}

/**
 * Implements hook_menu_alter().
 *
 * Add a local action link to the media page.
 */
function debut_media_menu_alter(&$items) {
  if (isset($items['media/browser'])) {
    $items['media/add'] = $items['media/browser'];
    $items['media/add']['type'] = MENU_LOCAL_ACTION;
  }
}

/**
 * Implements hook_entity_info_alter().
 *
 * Enable custom settings for the 'full' file view mode.
 * See http://drupal.org/node/1291428.
 */
function debut_media_entity_info_alter(&$entity_info) {
  $entity_info['file']['view modes']['full']['custom settings'] = TRUE;
}

/**
 * Implements hook_module_implements_alter().
 *
 * Extends the core file entity to be fieldable. Modules can define file types
 * via hook_file_type_info(). For each defined type, create a bundle, so that
 * fields can be configured per file type.
 */
function debut_media_module_implements_alter(&$implementations, $hook) {
  if ($hook == 'entity_info_alter') {
    // Move debut_media_entity_info_alter() to the end of the list.
    // module_implements() iterates through $implementations with a foreach
    // loop which PHP iterates in the order that the items were added, so to
    // move an item to the end of the array, we remove it and then add it.
    $group = $implementations['debut_media'];
    unset($implementations['debut_media']);
    $implementations['debut_media'] = $group;
  }
}

/**
 * Implements hook_views_data_alter().
 *
 * Use the media_title field for the file fid argument's name field.
 *
 * @todo: determine why this doesn't appear to work with views contextual
 *   filters;
 */
function debut_media_views_data_alter(&$data) {
  $data['file_managed']['fid']['argument']['name field'] = 'media_title';
  $data['file_managed']['fid']['argument']['name table'] = 'field_data_media_title';
}

/**
 * Implements hook_page_alter().
 *
 * Set the page title for media items to the title of the item.
 */
function debut_media_page_alter(&$variables) {
  if (arg(0) == 'file' && $file = menu_get_object('file')) {
    if (!empty($file->media_title['und'][0]['safe_value'])) {
      drupal_set_title($file->media_title['und'][0]['safe_value']);
    }
  }
  // Add late in the page generation process to override the jcarousel css.
  drupal_add_css(drupal_get_path('module', 'debut_media') . '/debut_media.css');
}

/**
 * Implementation of Styles module hook_styles_default_styles().
 */
function debut_media_styles_default_styles() {
  return array(
    'file' => array(
      'styles' => array(
        'medium_large' => array(
          'label' => 'Medium large',
          'description' => 'A medium large format of the media.',
        ),
        'small_square_thumbnail' => array(
          'label' => 'Small square thumbnail',
          'description' => 'A small, square format of the media.',
        ),
      ),
    ),
  );
}

/**
 * Implementation of Styles module hook_styles_default_presets_alter().
 */
function debut_media_styles_default_presets_alter(&$presets) {
  foreach (array_keys(debut_media_image_default_styles()) as $image_style) {
    // Cover the containers defined by file_styles and media_youtube.
    foreach (array('application', 'image', 'audio', 'video', 'default', 'media_youtube', 'media_vimeo') as $type) {
      // Ensure another module hasn't removed the container.
      if (isset($presets['file']['containers'][$type])) {
        $presets['file']['containers'][$type]['styles'][$image_style] = array(
          'default preset' => 'medium_large',
        );
        $presets['file']['containers'][$type]['presets'][$image_style] = array(
          array(
            'name' => 'image_style',
            'settings' => array(
              'image_style' => $image_style,
            ),
          ),
          array(
            'name' => 'thumbnail',
            'settings' => array(),
          ),
        );
      }
    }
  }
}

/**
 * Implementation of hook_field_default_fields_alter().
 *
 * Selectively add media fields to content types provided by features. To
 * receive a media_field instance, the feature should include the following in
 * its .info file:
 * debut[media][node_types][my_content_type] = my_content_type
 * where my_content_type is the name of a feature-provided content type.
 *
 * The media field status of a feature's content type can be altered by using
 * hook_system_info_alter(). Example:
 * %code
 * function example_system_info_alter(&$info, $module, $type) {
 *   if ($type == $module && $module->name == 'debut_article') {
 *     unset($info['debut']['media']['article']);
 *   }
 * }
 * %endcode
 */
function debut_media_field_default_fields_alter(&$items) {
  // Get features modules and determine which if claim media.
  $features = features_get_features();
  $node_types = array();
  foreach ($features as $feature) {
    $info = $feature->info;
    if (isset($info['debut']) && isset($info['debut']['media']) && isset($info['debut']['media']['node_types'])) {
      // Key the array by node type to match the format of the 'service_links_node_types' variable.
      $node_types = array_merge($node_types, array_combine($info['debut']['media']['node_types'], $info['debut']['media']['node_types']));
    }
  }
  // Add media fields to the designated node types.
  if (!empty($node_types)) {
    $field = debut_media_media_field();
    foreach ($node_types as $type) {
      // Don't override an existing field. This allows features to provide
      // their own version of the field.
      if (!isset($items["node-$type-field_media"])) {
        $field['field_instance']['bundle'] = $type;
        $items["node-$type-field_media"] = $field;
      }
    }
  }
}

/**
 * Return the structure of the media field.
 *
 * The instance bundle is marked as 'placeholder'. It should be converted to
 * the appropriate node type before being used.
 */
function debut_media_media_field() {
  $field = array(
    'field_config' => array(
      'active' => '1',
      'cardinality' => '-1',
      'deleted' => '0',
      'entity_types' => array(),
      'field_name' => 'field_media',
      'foreign keys' => array(
        'fid' => array(
          'columns' => array(
            'fid' => 'fid',
          ),
          'table' => 'file_managed',
        ),
      ),
      'indexes' => array(
        'fid' => array(
          0 => 'fid',
        ),
      ),
      'module' => 'file',
      'settings' => array(
        'display_default' => 0,
        'display_field' => 0,
        'uri_scheme' => 'public',
      ),
      'translatable' => '0',
      'type' => 'file',
    ),
    'field_instance' => array(
      'bundle' => 'placeholder',
      'deleted' => '0',
      'description' => '',
      'display' => array(
        'default' => array(
          'label' => 'hidden',
          'module' => 'file_entity',
          'settings' => array(
            'file_view_mode' => 'media_large',
          ),
          'type' => 'file_rendered',
          'weight' => '4',
        ),
        'teaser' => array(
          'label' => 'above',
          'settings' => array(),
          'type' => 'hidden',
          'weight' => 0,
        ),
      ),
      'entity_type' => 'node',
      'field_name' => 'field_media',
      'label' => 'Media',
      'required' => 0,
      'settings' => array(
        'description_field' => 0,
        'file_directory' => '',
        'file_extensions' => 'jpg jpeg gif png txt doc xls pdf ppt pps odt ods odp',
        'max_filesize' => '',
        'user_register_form' => FALSE,
      ),
      'widget' => array(
        'active' => 1,
        'module' => 'media',
        'settings' => array(
          'allowed_schemes' => array(
            'public' => 'public',
            'vimeo' => 'vimeo',
            'youtube' => 'youtube',
          ),
          'allowed_types' => array(
            'audio' => 0,
            'default' => 'default',
            'image' => 'image',
            'video' => 'video',
          ),
          'browser_plugins' => array(
            'library' => 0,
            'media_default--media_browser_1' => 0,
            'media_internet' => 0,
            'upload' => 0,
          ),
          'progress_indicator' => 'throbber',
        ),
        'type' => 'media_generic',
        'weight' => '10',
      ),
    ),
  );

  return $field;
}

/**
 * Implements hook_file_default_displays_alter().
 *
 * Clone settings for 'media_large' to new 'full' view mode. Add a generic file
 * fallback for each view mode + file type combo.
 *
 * @todo: remove 'media_large' to 'full' cloning once media provider modules
 * catch up. See http://drupal.org/node/1291428.
 */
function debut_media_file_default_displays_alter(&$items) {
  $info = entity_get_info('file');
  $bundles = array_keys($info['bundles']);
  $view_modes = array_keys($info['view modes']);

  foreach ($items as $key => $data) {
    list($file_type, $view_mode, $formatter_name) = explode('__', $key);
    if ($view_mode == 'media_large') {
      $display_name = implode('__', array($file_type, 'full', $formatter_name));
      if (!isset($items[$display_name])) {
        $items[$display_name] = clone($data);
        $items[$display_name]->name = $display_name;
      }
    }
  }
  foreach ($bundles as $file_type) {
    foreach ($view_modes as $view_mode) {
      $display_name = implode('__', array($file_type, $view_mode, 'file_field_file_default'));
      if (!isset($items[$display_name])) {
        $items[$display_name] = (object) array(
          'api_version' => 1,
          'name' => $display_name,
          'status' => 1,
          'weight' => 35,
          'settings' => array(),
        );
      }
    }
  }
}