<?php
// $Id$

/**
 * @file
 * Enable image support for video module.
 *
 * @author Fabio Varesano <fvaresano at yahoo dot it>
 */


/**
 * Implementation of hook_help().
 */
function video_image_help($section) {
  switch ($section) {
    case 'admin/modules#description':
      return t('Enable thumbnails support for video module.');
  }
}

/**
 * Implementation of hook_menu()
 */
function video_image_menu($may_cache) {
  $items = array();
  if ($may_cache) {
      $items[] = array(
      'path' => 'admin/content/video/image',
      'title' => t('Video image'),
      'description' => t('Administer video_image module settings'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('video_image_admin_settings'),
      'access' => user_access('administer site configuration'),
      'type' => MENU_NORMAL_ITEM,
    );
  }
  return $items;
}


/**
 * Settings form
 */
function video_image_admin_settings() {
  if (module_exists('video_upload')) {
    if (variable_get('video_image_auto_thumbnail', 0)) {
      $upload_weight = db_result(db_query("SELECT weight FROM {system} WHERE name='video_upload'"));
      db_query("UPDATE {system} SET weight=".($upload_weight+1)." WHERE name='video_image'");
    }
  }
  $form = array();
  $form['video_image_publish_thumbnail'] = array(
      '#type' => 'checkbox',
      '#title' => t('Publish the video thumbnails'),
      '#description' => t('Checking this value will cause the video thumbnail image nodes to be published and therefore could show up in blocks.  Usually, this is not what you want because then you could end up with both the thumbnail node and the video node showing up and since there is no way to link the image node to the video node, this is not desirable.  However, with this unchecked, the administrator will end up with a lot of unpublished nodes.'),
      '#default_value' => _video_image_publish_thumbnails(),
    );
  $form['video_image_promote_thumbnail'] = array(
      '#type' => 'checkbox',
      '#title' => t('Promote the thumbnails to the front page'),
      '#default_value' => _video_image_promote_thumbnails(),
    );
    
  return system_settings_form($form);
}

/**
 * Implementation of hook_form_alter()
 */
function video_image_form_alter($form_id, &$form) {

  if($form_id == 'video_node_form') {

    $node = $form['#node'];
    $value = ($node->new_image) ? '#value' : '#default_value';
    $form['iid'] = array('#type' => 'hidden', $value => $node->iid);

    if (function_exists('_image_check_settings')) {
      _image_check_settings();
      $form['#attributes'] = array("enctype" => "multipart/form-data");

     
      $form['image'] = array('#type' => 'fieldset', '#title' => t('Image thumbnails'), '#collapsible' => TRUE, '#collapsed' => TRUE, '#weight' => -17, '#description' => t('Use this form to upload an image.'));
      
      $form['image']['image'] = array('#type' => 'file', '#title' => t('Image'));
      $form['image']['image_title'] = array('#type' => 'textfield', '#title' => t('Image title'), '#default_value' => $node->image->image_title);
    }
  }

}


/**
 * Implementation of hook_nodeapi()
 */
function video_image_nodeapi(&$node, $op, $teaser) {
  if($node->type == 'video') {
    switch ($op) {
      case 'load': 
        $output['iid'] = $node->serial_data['iid'];
        return $output;
      case 'submit':
        if (variable_get('video_image_auto_thumbnail_debug', false) && variable_get('video_image_auto_thumbnail', false)) {
          drupal_set_message(t('video_image_nodeapi: prepare: ready to thumbnail image'));
        }
        $field_name = file_check_upload('image');
        $image->uid = $node->uid;
        $image->name = $node->name;
        $image->created = $node->created;
        $image->type = 'image';
        //$image->status = _video_image_publish_thumbnails();
        //$image->promote = _video_image_promote_thumbnails();
        if (!$field_name && module_exists('video_ffmpeg_helper') && variable_get('video_ffmpeg_helper_auto_thumbnail', false)) {
          $image->title = $_SESSION['video_upload_file']->filename;
          $field_name = _video_ffmpeg_helper_auto_thumbnail($node);
        }
        else {
          $image->title = $_POST['edit']['image_title'];
          $field_name = 'image';
        }
        image_prepare($image, $field_name);
        if ($image->images) {
          node_validate($image);
          if (!form_get_errors()) {
            $image = node_submit($image);
            node_save($image);
            
            // needed to set the correct status and promote values if the user does not have enought permissions. Is there a better solution???
            db_query('UPDATE {node} SET status = %d, promote = %d WHERE nid = %d AND vid = %d', _video_image_publish_thumbnails(), _video_image_promote_thumbnails(), $image->nid, $image->vid); 
            
            $node->iid = $node->serial_data['iid'] = $image->nid;
            $_SESSION['video_upload_file']->iid = $image->nid;
            $node->new_image = TRUE;
          }
        }
        else if (isset($_SESSION['video_upload_file']->iid)) {
          $node->iid = $_SESSION['video_upload_file']->iid;
        }
      
        $node->serial_data['iid'] = $node->iid;
      break;
      case 'prepare':
        ;
      break;

      case 'view':
        if ($node->iid) {
          if($teaser) {
            $node->content['video_image_thumbnail'] = array('#value' => theme('video_image_teaser', $node));
          }
          else {
            $node->content['video_image_thumbnail'] = array('#value' => theme('video_image_body', $node));
          }
        }
        break;
      case 'delete':
        node_delete(array('nid' => $node->iid));
        break;
    }
  }
}


/**
 * Render the output for the node teaser.
 *
 * @param $node
 *   object with node information
 *
 * @return
 *   string of content to display
 */
function theme_video_image_teaser($node) {
  if($node->serial_data['iid']) {
    $image = node_load($node->serial_data['iid']);
    $image = image_display($image, 'thumbnail', array('class' => 'video_image_teaser'));
  }
  else { // only for backward compatibility
    $image = theme('image', $node->serial_data['image_teaser'], $node->title, $node->title, array('class' => 'video_image_teaser'), FALSE);
  }
  $output .= l($image, "node/$node->nid", array(), NULL, NULL, FALSE, TRUE); //Create a link with an image in it.
  $output .= '<br class="video_image_clear" />';
  return $output;
}


/**
 * Generates the image HTML displayed in the Node body.
 *
 * @param $node
 *   object with node information
 *
 * @return
 *   string of content to display
 */
function theme_video_image_body($node) {
  if($node->serial_data['iid']) {
    $image = node_load($node->serial_data['iid']);
    $image = image_display($image, 'thumbnail');
  }
  else { // only for backward compatibility
    $image = theme('image', $node->serial_data['image_view'], $node->title, $node->title, array('class' => 'video_image_view'), FALSE); //Create image HTML
  }
  $output = l($image, "node/$node->nid/play", array('title' => t('play') . ' ' . $node->title), NULL, NULL, FALSE, TRUE); //Create link HTML with image in it.

  return $output;
}


/* If the user has set a promote preference, use that, otherwise return
 * if 'promote' is set in the drupal content type settings
 *
 * @return
 *   Returns whether we should promote thumbnails or not
 */
function _video_image_promote_thumbnails() {
  $settings_override = variable_get('video_image_promote_thumbnail', NULL);
  if ($settings_override === NULL) {
    $node_options = variable_get('node_options_image', array('status', 'promote'));
    return in_array('promote', $node_options);
  }
  return $settings_override;
}

/* If the user has set a publish preference, use that, otherwise return
 * if 'status' is set in the drupal content type settings
 *
 * @return
 *   Returns whether we should publish thumbnails or not
 */
function _video_image_publish_thumbnails() {
  $settings_override = variable_get('video_image_publish_thumbnail', NULL);
  if ($settings_override === NULL) {
    $node_options = variable_get('node_options_image', array('status', 'promote'));
    return in_array('status', $node_options);
  }
  return $settings_override;
}
?>