fieldyoutube.module

<?php
// $Id$

/**
 * @file
 * Youtube field hooks, and functionalities
 */


/**
 * Implements hook_field_info().
 */
function fieldyoutube_field_info() {
  return array(
    'youtube' => array(
      'label' => 'YouTube',
      'description' => t('This field stores and renderes YouTube videos.'),
      'default_widget' => 'text_textfield',
      'default_formatter' => 'default',
      'property_type' => 'text',
    ),
  );
}

function fieldyoutube_field_validate($entity_type, $entity, $field, $instance, $langcode, $items, &$errors) {
	foreach($items as $delta => $item) {
		if(isset($item['youtube'])) {
			$youtubeID = parseURL($item['youtube']);
			$headers = get_headers('http://gdata.youtube.com/feeds/api/videos/' . $youtubeID);
			if (!strpos($headers[0], '200')) {
				$errors[$field['field_name']][$langcode][$delta][] = array(
		          'error' => 'fieldyoutube_invalid_id', 
		          'message' => t('%name: You have entered an invalid YouTube URL.', array('%name' => $instance['label'])),
		        );
			}
		}
	}
}

function fieldyoutube_field_widget_error($element, $error, $form, &$form_state) {
	form_error($element, $error['message']);
}

/**
 * Implements hook_content_is_empty().
 */
function fieldyoutube_field_is_empty($item, $field) {
  if (empty($item['youtube'])) {
    return TRUE;
  }
  return FALSE;
}


/**
 * Implements hook_field_formatter_info().
 *
 */
function fieldyoutube_field_formatter_info() {
  $formats = array(
    'fieldyoutube_embed' => array(
      'label' => t('Default Video @ 640 x 360'),
      'description' => t('Will show embeded YouTube on your node'),
      'field types' => array('youtube'),
    ),
    'fieldyoutube_embed_desired_width_autoplay' => array(
      'label' => t('Video @ Specified Size Autoplay'),
      'description' => t('Will show embeded YouTube on your node'),
      'field types' => array('youtube'),
    ),
    'fieldyoutube_embed_desired_width_no_autoplay' => array(
      'label' => t('Video @ Specified Size No Autoplay'),
      'description' => t('Will show embeded YouTube on your node'),
      'field types' => array('youtube'),
    ),
    'fieldyoutube_thumblink' => array(
      'label' => t('Image with link to video'),
      'description' => t('Will show image thumbnail linked to YouTube video'),
      'field types' => array('youtube'),
    ),
    'fieldyoutube_plain' => array(
      'label' => t('Text link to video'),
      'description' => t('Will show plain text link to YouTube video'),
      'field types' => array('youtube'),
    ),
  );
  return $formats;
}


/**
 * Implements hook_field_formatter_view().
 */
function fieldyoutube_field_formatter_view($object_type, $object, $field, $instance, $langcode, $items, $display) {
  $res = explode('x', $instance['widget']['settings']['resolution']);
  $element = array();
  switch ($display['type']) {
    case 'fieldyoutube_embed':
      foreach ($items as $delta => $item) {
        $youtube = new YouTube($item['youtube']);
        //$output = $youtube->EmbedVideo($res[0], $res[1]);
        $output = $youtube->EmbedVideo(640, 360);
        $element[$delta] = array('#markup' => $output);
      }
      break;
    case 'fieldyoutube_embed_desired_width_autoplay':
		foreach ($items as $delta => $item) {
			$youtube = new YouTube($item['youtube']);
	        $output = $youtube->EmbedVideo($res[0], $res[1]);
	        //$output = $youtube->EmbedVideo(640, 360);
	        $element[$delta] = array('#markup' => $output);
		}
      	break;
    case 'fieldyoutube_embed_desired_width_no_autoplay':
		foreach ($items as $delta => $item) {
			$youtube = new YouTube($item['youtube']);
	        $output = $youtube->EmbedVideo($res[0], $res[1], null, 1, 0);
	        //$output = $youtube->EmbedVideo(640, 360);
	        $element[$delta] = array('#markup' => $output);
		}
      	break;
    case 'fieldyoutube_thumblink':
      foreach ($items as $delta => $item) {
        $youtube = new YouTube($item['youtube']);
        $output = l( $youtube->ShowImg(), $item['youtube'], array('html' => TRUE) );
        $element[$delta] = array('#markup' => $output);
        break;
      }
      break;
    case 'fieldyoutube_plain':
      foreach ($items as $delta => $item) {
        $output = l( t('Click here to watch this video.'), $item['youtube']);
        $element[$delta] = array('#markup' => $output);
      }
      break;
  }
  return $element;
}


/**
 * Implements hook_field_widget_info().
 */
function fieldyoutube_field_widget_info() {
  return array(
    'fieldyoutube_textfield' => array(
      'label' => t('Text field'),
      'field types' => array('youtube'),
      'settings' => array('size' => 60),
    ),
  );
}


/**
 * Implements hook_field_widget_settings_form().
 */
function fieldyoutube_field_widget_settings_form($field, $instance) {
  $widget = $instance['widget'];
  $settings = $widget['settings'];

  $form['size'] = array(
    '#type' => 'textfield',
    '#title' => t('Size of textfield'),
    '#default_value' => $settings['size'],
    '#required' => TRUE,
    '#element_validate' => array('_element_validate_integer_positive'),
  );
  $form['resolution'] = array(
    '#type' => 'textfield',
    '#title' => t('Resolution of rendered video'),
    '#default_value' => (isset($settings['resolution'])) ? $settings['resolution'] : '425x344',
    '#required' => FALSE,
  );
  // TODO: Quality switcher
  return $form;
}


/**
 * Implements hook_field_widget_form().
 */
function fieldyoutube_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $base) {
  $element = $base;
  $element['youtube'] = $base + array(
    '#type' => 'textfield',
    '#default_value' => isset($items[$delta]['youtube']) ? $items[$delta]['youtube'] : NULL,
    '#size' => $instance['widget']['settings']['size'],
    '#prefix' => '<div class="text-full-wrapper">',
    '#suffix' => '</div>',
  );
  return $element;
}


/**
 * Implements hook_node_insert().
 */

function fieldyoutube_node_presave($node) {
	if($node->type == 'media_video') {
		$path = GetImg( $node->field_youtube['und'][0]['youtube'] ,0);
		$name = pathinfo($path);
		$fid  = '';
		$img_import = write_image_info($path, $name['filename'], $fid, parseURL($node->field_youtube['und'][0]['youtube']));
		$node->field_video_preview['und'][0]['fid'] = $fid;
		$node->field_video_preview['und'][0]['description'] = '';
		$node->field_video_preview['und'][0]['title'] = '';
		$node->field_video_preview['und'][0]['alt'] = '';
	}
}


function GetImg($url = '', $imgid = 1) {
	$videoid = parseURL($url);
	if (!$videoid) $videoid = $url;
	
	return "http://img.youtube.com/vi/".$videoid."/".$imgid.".jpg";
}

function parseURL($url) {
    if (preg_match('/watch\?v\=([A-Za-z0-9_-]+)/', $url, $matches))
      return $matches[1];
    else
      return FALSE;
} 


function write_image_info($remote_image_path, $remote_image_name, &$fid, $vid) {
	$image_path = $remote_image_path;
	$remote_image_name = $remote_image_name . '.jpg';

	$file_temp = file_get_contents($remote_image_path);
	$file_temp = file_save_data($file_temp, file_default_scheme() . '://' . $vid .  $remote_image_name, FILE_EXISTS_RENAME);
	$fid = $file_temp->fid;
}