<?php

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) exit;

/**
 * Controller for the New Gallery admin page.
 *
 * @extends Vimeography_Base
 */
class Vimeography_Gallery_New extends Vimeography_Base {

  /**
   * Vimeo library instance
   *
   * @var singleton
   */
  private $_vimeo;

  /**
   * The default client ID OR the user's access token.
   *
   * @var string
   */
  private $_token;

  /**
   * [$_gallery_id description]
   * @var [type]
   */
  protected $_gallery_id;

  /**
   * [__construct description]
   */
  public function __construct() {
    if ( ( $this->_token = get_option('vimeography_pro_access_token') ) === FALSE ) :
      $this->_vimeo = new \Vimeography\Vimeo( NULL, NULL, VIMEOGRAPHY_ACCESS_TOKEN );
    else :
      $this->_vimeo = new \Vimeography\Vimeo( NULL, NULL, $this->_token );
    endif;

    if ( isset( $_POST['vimeography_new_gallery_settings'] ) ) {
      try {
        $input             = $this->_validate_form( $_POST['vimeography_new_gallery_settings'] );
        $this->_gallery_id = self::_create_vimeography_gallery($input);

        do_action('vimeography-pro/create-gallery', $this->_gallery_id);

        //$trigger = $this->_vimeography_subscribe_to_trigger($input['resource_uri'], $gallery_id);

        if ( isset( $_GET['redirect'] ) && $_GET['redirect'] == 'welcome' ) {
          wp_redirect( get_admin_url().'options.php?page=vimeography-welcome&step=2&id=' . $this->_gallery_id );
        } else {
          wp_redirect( get_admin_url().'admin.php?page=vimeography-edit-galleries&id=' . $this->_gallery_id . '&created=1' );
        }

        exit;
      } catch (Vimeography_Exception $e) {
        require_once(ABSPATH . 'wp-admin/admin-header.php');
        $this->messages[] = array(
          'type' => 'error',
          'heading' => __('Heads up!', 'vimeography'),
          'message' => $e->getMessage()
        );
      }
    }
  }

  /**
   * Returns several security form fields for the new gallery form.
   *
   * @access public
   * @return mixed
   */
  public function nonce() {
     return wp_nonce_field('vimeography-gallery-action','vimeography-gallery-verification');
  }

  /**
   * Checks the incoming form to make sure it is completed.
   *
   * @access protected
   * @return array $input
   */
  protected function _validate_form($input) {
    if ( check_admin_referer('vimeography-gallery-action','vimeography-gallery-verification') ) {
      if ( empty( $input['gallery_title'] ) || empty( $input['source_url'] ) ) {
        throw new Vimeography_Exception( __('Make sure you fill out all of the fields below!', 'vimeography') );
      }

      $themes = array_map( array($this, 'get_theme_name'), $this->themes() );

      if ( ! in_array( $input['gallery_theme'], $themes ) ) {
        throw new Vimeography_Exception( __('The theme you are trying to use is not installed or activated.', 'vimeography') );
      }

      $input['gallery_theme'] == strtolower( sanitize_text_field( $input['gallery_theme'] ) );
      $input['resource_uri'] = Vimeography::validate_vimeo_source( $input['source_url'] );
      return $input;
    }
  }

  /**
   * Maps the Vimeography themes array above and fetches only the name for each theme.
   *
   * @since  1.4.2
   * @param  array $theme
   * @return string Theme name
   */
  private function get_theme_name($theme) {
    return $theme['name'];
  }

  /**
   * Creates a new gallery entry in the database.
   *
   * @access private
   * @static
   * @return int gallery ID if success, exception if failure
   */
  private static function _create_vimeography_gallery($input) {
    global $wpdb;

    $result = $wpdb->insert( $wpdb->vimeography_gallery, array( 'title' => $input['gallery_title'], 'date_created' => current_time('mysql'),  'is_active' => 1 ) );

    if (! $result) {
      throw new Vimeography_Exception(
        __("We couldn't create a new gallery. Try upgrading or reinstalling the Vimeography plugin.", 'vimeography')
      );
    } else {
      $gallery_id = $wpdb->insert_id;
      $theme = apply_filters('vimeography.gallery.new.theme', $input['gallery_theme'] );

      $result = $wpdb->insert( $wpdb->vimeography_gallery_meta, array(
                              'gallery_id'     => $gallery_id,
                              'source_url'     => $input['source_url'],
                              'resource_uri'   => $input['resource_uri'],
                              'featured_video' => NULL,
                              'gallery_width'  => NULL,
                              'video_limit'    => 25,
                              'cache_timeout'  => 3600,
                              'theme_name'     => $theme ) );

      if (! $result) {
        throw new Vimeography_Exception(
          __("We couldn't create a new gallery. Try upgrading or reinstalling the Vimeography plugin.", 'vimeography')
        );
      }
    }

    return $gallery_id;
  }

  /**
   * When the user enters the source location when creating a new gallery.
   *
   * Won't work publically yet, because the user needs to be authenticated to subscribe to push notifications.
   * Also, does not currently work with albums.
   *
   * @return [type] [description]
   */
  private function _vimeography_subscribe_to_trigger($resource, $gallery_id) {

    $callback = network_site_url() . '/vimeography/' . $gallery_id . '/refresh/';

    $response = $this->_vimeo->request( '/triggers', array(
      'actions'      => 'added, removed',
      'callback'     => $callback,
      'resource_uri' => $resource .'/videos'
    ), 'POST' );

    echo '<pre>';
    var_dump($response);
    echo '</pre>';
    die;

    switch ($response['status']) {
      case 201:
        //successful
        return TRUE;
        break;
      case 403:
        if ($this->_token === FALSE) :
          // Trigger unsuccessful, rely on 304 headers.
          break;
          // This line will only work when the Vimeo API supports triggers without being authenticated
          // Though, the user could technically be subscribing to a collection that isn't actually supported in PRO, either.
          // So be specific in which sources are currently supported.
          //throw new Vimeography_Exception('Vimeography PRO allows you to show videos from all of your users, channels, albums, & groups.');
        else:
          throw new Vimeography_Exception(__("Looks like you don't have the permission to subscribe to this collection.", 'vimeography'));
        endif;
        break;
      case 405: case 500:
        // Unsupported container uri
        throw new Vimeography_Exception(__('The resource that was entered is currently unsupported.', 'vimeography') );
        break;
      default:
        throw new Vimeography_Exception( serialize($response) );
        break;
    }
  }

}