<?php
/* $Id: asset_youtube.module,v 1.1.2.4 2008-01-29 20:49:47 wmostrey Exp $ */

function asset_youtube_extract_id($text) {
  $matches = array();
  // first try to match the embed tag
  preg_match('/param[^>]*value=\"http:\/\/www.youtube.com\/v\/([^\"]*)\"/', $text, $matches);
  
  // then the URL
  if (!isset($matches[1])) {
    // http://youtube.com/watch?v=9193duFdUec
    preg_match('/http:\/\/www.youtube.com\/watch\?v=(.*)^\"/', $text, $matches);
  }    
  return (isset($matches[1]) ? $matches[1] : false);
}

function asset_youtube_asset_settings() {
  $form['asset_youtube_dev_id'] = array(
    '#type' => 'textfield',
    '#title' => t('YouTube Developer ID'),
    '#description' => '<a href="http://www.youtube.com/my_profile_dev">Get your YouTube Developer Id here.</a>',
    '#default_value' => variable_get('asset_youtube_dev_id', ''),
  );
  return system_settings_form($form);
}

function asset_youtube_asset_type($op = 'info', $delta=0, $form_values=array()) {
  switch ($op) {
    case 'info':
      return array(
        'embed' => array(
          'value' => t('YouTube Embed'),
          'title' => t('Use an existing YouTube video.'),
          'src' => drupal_get_path('module', 'asset_youtube') .'/red_y.gif',
        ),
        'sync' => array(
          'value' => t('YouTube Sync'),
          'title' => t('Sync up with your YouTube Account.'),
          'src' => drupal_get_path('module', 'asset_youtube') .'/red_y.gif',
        ),
      );
    case 'form':
      switch ($delta) {
        case 'embed': 
          $form['parent'] = array(
            '#type' => 'hidden',
            '#value' => $form_values['parent'] ? $form_values['parent'] : $_GET['dir'],
          );
          $form[] = array(
            '#type' => 'item',
            '#title' => 'Directory',
            '#value' => str_replace(file_directory_path(), 'assets', $form['parent']['#value']),
            '#prefix' => '<div class="container-inline">',
            '#suffix' => '</div>',
          );
          $form['embed'] = array(
            '#type' => 'textarea',
            '#title' => t('YouTube Embed Code'),
            '#rows' => 3,
          );
          $form['title'] = array(
            '#type' => 'textfield',
            '#title' => t('Title'),
          );
          $form['author'] = array(
            '#type' => 'textfield',
            '#title' => t('Author'),
          );
          $form['description'] = array(
            '#type' => 'textarea',
            '#title' => t('Description'),
            '#rows' => 3,
          );
          $form['status'] = array(
            '#type' => 'radios',
            '#title' => t('Status'),
            '#required' => true,
            '#default_value' => ASSET_PUBLIC,
            '#options' => array(
              ASSET_PRIVATE => t('Private'),
              ASSET_PUBLIC => t('Public'),
            ),
          );
          break;
        case 'sync':
          global $user;
          if ($user->asset_youtube['username']) {
            $form['help'] = array('#value' => '<p>Click next to import your YouTube Videos and Favorites.</p>');
          }
          else{
            $form['help'] = array('#value' => '<p>Please provide you YouTube user name and click next to import your YouTube Videos and Favorites.</p>');
            // match user edit form structure
            $form['asset_youtube']['#tree'] = true;
            $form['asset_youtube']['username'] = array(
              '#type' => 'textfield',
              '#title' => t('YouTube user name'),
            );
          }
          break;
      }
      return $form;
    case 'validate':
      // return a valid asset aid
      switch ($delta) {
        case 'embed':
          if ($ytid = asset_youtube_extract_id($form_values['embed'])) {
            $path = $form_values['parent'] .'/'. $ytid .'.youtube';
            $asset->filepath = $path;
            $asset->status = $form_values['status']; 
            $asset->title = $form_values['title'];
            $asset->author = $form_values['author'];
            $asset->description = $form_values['description'];
            $asset->type = 'youtube';
            $asset = asset_save($asset);
            return $asset->aid;
          }
          else{
            form_set_error('embed', 'Error extracting YouTube video ID.</em>');
          }
          break;
        case 'sync':
          global $user;
          if ($form_values['asset_youtube']['username']) {
            asset_youtube_user('update', $form_values, $user);
            $user = user_load(array('uid' => $user->uid));
          }
          asset_youtube_sync();
          $query = $_GET;
          unset($query['q']);
          $query['dir'] = $user->name .'/My YouTube';
          drupal_goto($_GET['q'], asset_build_query($query));
          break;
      }
      break;
    case 'submit':
      // must return a valid asset aid
      switch ($delta) {
      }
      break;
  }
      
}

function asset_youtube_asset_formatter($op='info', $asset=null, $attr=array()) {
  switch ($op) {          
    case 'info':
      $formats['video'] = array(
        'name' => 'YouTube Video',
        'types' => array('youtube' => array('*')),
        'description' => t('Embed the YouTube video.'),
      );
      $formats['thumbnail'] = array(
        'name' => 'YouTube Thumbnail Image',
        'types' => array('youtube' => array('*')),
        'description' => t('Display a thumbnail preview image of the YouTube video.'),
      );
      return $formats;
    case 'init':
      break;      
    case 'options':
      switch ($attr['format']) {
        case 'thumbnail':
          break;
        case 'video':
          $form['height'] = array(
            '#type' => 'textfield',
            '#title' => t('Height'),
            '#size' => '10',
            '#default_value' => 325,            
          );
          $form['width'] = array(
            '#type' => 'textfield',
            '#title' => t('Width'),
            '#size' => '10',
            '#default_value' => 450,            
          );
        break;
      }
      return $form;
    case 'preview':
      return theme('asset_youtube_thumbnail', $asset);
    case 'img' :
      $id = str_replace('.youtube', '', $asset->filename);
      $url = "http://img.youtube.com/vi/$id/2.jpg";
      return $url;
      break;
    case 'details':
      break;
    case 'render':
      switch ($attr['format']) {
        case 'thumbnail':
          return theme('asset_youtube_thumbnail', $asset);
          break;
        case 'video':
        default:
          return theme('asset_youtube_video', $asset, $attr);
          break;
      }      
      break;
  }
}

function asset_youtube_assetapi($op='list', $asset=null) {
  switch ($op) {
    case 'load':
      if ($asset->extension == 'youtube') {
        $fields['url'] = 'http://youtube.com/watch?v='. str_replace('.youtube', '', $asset->filename);
      }
      return $fields;
  }
}

function theme_asset_youtube_thumbnail($asset) {
  $id = str_replace('.youtube', '', $asset->filename);
  $url = "http://img.youtube.com/vi/$id/2.jpg";
  $alt = $title = $asset->title;
  $img = '<img src="'. check_url($url) .'" alt="'. check_plain($alt) .'" title="'. check_plain($title) .'" />';      
  return $img;
}

function theme_asset_youtube_video($asset, $attr = array()) {
  $id = str_replace('.youtube', '', $asset->filename);
  
  return '<object width="'. $attr['width'] .'" height="'. $attr['height'] .'">'
       .'<param name="movie" value="http://www.youtube.com/v/'. $id .'"></param>'
       .'<param name="wmode" value="transparent"></param>'
       .'<embed src="http://www.youtube.com/v/'. $id .'" type="application/x-shockwave-flash" '
       .'wmode="transparent" width="'. $attr['width'] .'" height="'. $attr['height'] .'">'
       .'</embed></object>';
}

function asset_youtube_sync() {
  global $user;
  $videos = $favorites = 0;
  
  if (!$user->asset_youtube['username']) {
    drupal_set_message('You must first enter your youtube user name.');
    return;
  }

  asset_check_directory($user->name, FILE_CREATE_DIRECTORY);
  $yt_dir = $user->name .'/My YouTube';
  asset_check_directory($yt_dir, FILE_CREATE_DIRECTORY);
  
  // Get user's videos
  $result = asset_youtube_call('youtube.videos.list_by_user');
  if (is_array($result->document->video_list[0]->video)) {
    $dir = $yt_dir .'/My Videos';
    if (asset_check_directory($dir, FILE_CREATE_DIRECTORY)) {
      foreach ($result->document->video_list[0]->video as $video) {
        asset_youtube_save_asset($video, $dir);
        $videos++;
      }
    }
    else {
      drupal_set_message('Error creating <em>My YouTube Videos</em> folder.', 'error');
    }
  }
  
  // Get user's favorites
  $result = asset_youtube_call('youtube.users.list_favorite_videos');
  if (is_array($result->document->video_list[0]->video)) {
    $dir = $yt_dir .'/My Favorites';
    if (asset_check_directory($dir, FILE_CREATE_DIRECTORY)) {
      foreach ($result->document->video_list[0]->video as $video) {
        asset_youtube_save_asset($video, $dir);
        $favorites++;
      }
    }
    else{
      drupal_set_message('Error creating <em>My YouTube Videos</em> folder.', 'error');
    }
  }

  return "saved $videos videos and $favorites favorites";
}

function asset_youtube_save_asset($video, $dir) {
  $filename = $video->id[0]->tagData .'.youtube';
  $asset = asset_load(array('dirname' => $dir, 'filename' => $filename));
  if (!$asset) {
    $asset = new stdClass();
    $asset->filepath = $dir .'/'. $filename;
    $asset->filesize = 0;
    $asset->title = $video->title[0]->tagData;
    $asset->description = $video->description[0]->tagData;
    $asset->author = $video->author[0]->tagData;
    $asset->type = 'youtube';
    asset_save($asset);
  }  
}

function asset_youtube_call($method, $params=array()) {
  global $user;
  $dev_id = variable_get('asset_youtube_dev_id', '');
  $yt_user = $user->asset_youtube['username'];
  $url = 'http://www.youtube.com/api2_xmlrpc';
  $default_params = array(
    'dev_id' => $dev_id,
    'user' => $yt_user,
  );
  $params = array_merge($default_params, $params);
  $xml = xmlrpc($url, $method, $params);
  require_once(drupal_get_path('module', 'asset_youtube') .'/xmlparser.class.php');
  $response = new XMLParser($xml);
  $response->Parse();
  return $response;
}

function asset_youtube_user($op, &$edit, &$account, $category = NULL) {
  switch ($op) {
    case 'categories':
      return array(array('name' => 'asset', 'title' => t('Asset'), 'weight' => 1));
      break;
    case 'form':
      if ($category == 'asset') {
        $form['asset_youtube'] = array(
          '#type' => 'fieldset',
          '#title' => t('YouTube Settings'),
          '#tree' => true
        );
        $form['asset_youtube']['username'] = array(
          '#type' => 'textfield',
          '#title' => t('YouTube User Name'),
          '#default_value' => $account->asset_youtube['username'],
        );
      }
      return $form;
    case 'update':
      if ($edit['asset_youtube']['username']) {
        if (db_result(db_query("SELECT COUNT(*) FROM {asset_youtube_user} WHERE uid=%d", $account->uid))) {
          db_query("UPDATE {asset_youtube_user} SET username='%s' WHERE uid=%d", $edit['asset_youtube']['username'], $account->uid);
          break;
        }
      }
      else {
        break;
      }
      // fall through
    case 'insert':
      if ($edit['asset_youtube']['username']) {
        db_query("INSERT INTO {asset_youtube_user} (uid, username) VALUES (%d, '%s')", $account->uid, $edit['asset_youtube']['username']);
      }
      break;
    case 'delete':
      db_query('DELETE FROM {asset_youtube_user} WHERE uid = %d', $account->uid);
      break;
    case 'load':
      $account->asset_youtube = db_fetch_array(db_query('SELECT username FROM {asset_youtube_user} WHERE uid=%d', $account->uid));
      break;  
            
  }
  
}