<?php
// $Id: audio_attach.module,v 1.11 2009/11/25 19:30:45 drewish Exp $

/**
 * @file audio_attach.module
 */

/**
 * Implementation of hook_help().
 */
function audio_attach_help($section, $args) {
  switch ($section) {
    case 'admin/help#audio_attach':
      return t('<p>Allows audio files to be attached to any content type.  You can configure which content types by going to admin/content/types.</p>');
      break;
  }
}

/**
 * Implementation of hook_perm().
 */
function audio_attach_perm() {
  // FIXME: this isn't used at this point. Need to think about adding a default
  // view that's used to limit the attachable nodes and using it to control
  // some access.
  return array(
    'attach any existing audio file'
  );
}

/**
 * Implementation of hook_field_formatter_info().
 */
function audio_attach_field_formatter_info() {
  return array(
    'audio_attach' => array(
      'label' => t('Attached audio'),
      'field types' => array('nodereference'),
      'multiple values' => CONTENT_HANDLE_MODULE,
    ),
  );
}

/**
 * Implementation of hook_theme
 */
function audio_attach_theme() {
  return array(
    'audio_attach_formatter_audio_attach' => array(
      'arguments' => array('element' => NULL, 'teaser' => FALSE),
    ),
  );
}


/**
 * Theme function for 'attached_audio' nodereference field formatter.
 */
function theme_audio_attach_formatter_audio_attach($element, $teaser = FALSE) {
  $items = array();

  foreach (element_children($element) as $item) {
    if (!empty($element[$item]['#item']['nid'])) {
      $audio = node_load($element[$item]['#item']['nid']);
      if ($audio->nid) {
        $audio = node_prepare($audio, $teaser);
        $title = $audio->status ? l($audio->title, 'node/'. $audio->nid, array('html' => TRUE)) : check_plain($audio->title);
        $items[] = '<div class="title">'. $title .'</div>'. theme('audio_teaser', $audio);
      }
    }
  }

  if (count($items)) {
    drupal_add_css(drupal_get_path('module', 'audio_attach') .'/audio_attach.css');
    return theme('item_list', $items, null, 'ol', array('class' => 'audio-attach-list'));
  }

  return '';
}

/**
 * Implementation of hook_form_alter()
 */
function audio_attach_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id) {
    // FIXME: This is broken; I'm not sure what $form['type']['#value'] is
    // expected to be, but it certainly doesn't always exist.
    // if enabled adjust the form
    //case $form['type']['#value'] .'_node_form':
    case 'TYPE_node_form':
      if (variable_get('audio_attach_'. $form['type']['#value'], 0)) {
        $node = $form['#node'];
        $form['#attributes'] = array("enctype" => "multipart/form-data");
        $form['audio_attach'] = array('#type' => 'fieldset', '#title' => t('Attached audio files'), '#collapsible' => TRUE);

        // Display currently attached files, if any.
        if (isset($node->nid)) {
          if ($audio_list = _audio_attach_current_list($node->nid)) {
            $form['audio_attach']['audio_list'] = array(
              '#type' => 'item',
              '#prefix' => '<div id="audio-attach-items-table-wrapper">',
              '#value' => $audio_list,
              '#suffix' => '</div>',
            );
          }
        }

        if ($node->audio_aid) {
          $form['audio_attach']['audio_aid'] = array('#type' => 'hidden', '#value' => $node->audio_aid);
        }

        // allow existing audio file to be attached
        $form['audio_attach']['audio_existing_aid'] = array(
          '#type' => 'select',
          '#title' => t('Existing audio file'),
          '#options' => audio_attach_get_audio_nodes(),
          '#description' => t('Choose an audio file already existing on the server if you do not upload a new one.')
          );

        $form['audio_attach']['audio_upload'] = array(
          '#type' => 'file',
          '#title' => t('Upload new audio file'),
          '#description' => t('Click "Browse..." to select an audio file to upload. <strong>NOTE:</strong> the current PHP configuration limits uploads to %maxsize. ', array('%maxsize' => format_size(file_upload_max_size()))),
        );
        $form['audio_attach']['audio_title'] = array(
          '#type' => 'textfield',
          '#title' => t('Title'),
          '#default_value' => variable_get('audio_default_title_format', '[audio-tag-title] by [audio-tag-artist]')
        );
        $form['audio_attach']['audio_publish'] = array(
          '#type' => 'checkbox',
          '#title' => t('Published'),
          '#return_value' => 1,
          '#default_value' => 1,
          '#description' => t('If checked, this audio file will be published to the rest of the site.')
        );
      }
      break;
  }
}

/**
 * Implementation of hook_nodeapi().
 */
function audio_attach_nodeapi(&$node, $op, $teaser, $page) {
  global $user;

  if ($node->type == 'audio' || !variable_get("audio_attach_$node->type", 0)) {
    return;
  }
  switch ($op) {
    case 'prepare':
      // FIXME: just holding onto this until it gets moved.
      break;
      $audio->title_format = check_plain($_POST['audio_title']);
      $audio->status = check_plain($_POST['audio_publish']) ? 1 : 0;
      $audio->uid = $user->uid;
      $audio->name = $user->name;
      $audio->type = 'audio';
      audio_prepare($audio);
      if ($audio->audio_file) {
        // Node validate is throwing errors...
        // node_validate($audio);
        if (!form_get_errors()) {
          $audio = node_submit($audio);
          node_save($audio);
          $node->audio_aid = $audio->nid;
        }
      }
      break;
  }
}