<?php

// Load all Field module hooks for Audio.
module_load_include('inc', 'audiofield', 'audio.field');
module_load_include('inc', 'audiofield', 'audiofield.players');

/**
 * Implementation of hook_menu().
 */
function audiofield_menu() {
  $items['admin/config/media/audiofield'] = array(
    'title' => 'Audio Field',
    'description' => 'Configure Audiofield.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('audiofield_admin_settings_form'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_NORMAL_ITEM,
  );
  return $items;
}

/**
 * Implementation of hook_permission().
 */
function audiofield_permission() {
  return array(
    'download own audio files' => array(
      'title' => t('Download Own Audio Files'),
      'description' => t('Let the users download their own audio files.'),
    ),
    'download all audio files' => array(
      'title' => t('Download All Audio Files'),
      'description' => t('Let the users download any audio files.'),
    ),
  );
}

function audiofield_admin_settings_form() {
  global $base_path;
  global $base_url;

  $audio_players = audiofield_players();
  $players = array();
  $download_players = '';
  foreach ($audio_players as $id => $player) {
    if (file_exists($player['path']) || (isset($player['external']) && $player['external'])) {
      foreach ($player['filetypes'] as $filetype) {
        $players[$filetype][$id] = $player['name'] . '<br/>'; /* . call_user_func($player['callback'], $base_path . $player['path'], "");*/
      }
    }
    else {
      if (isset($player['download_link'])) {
        $download_players .= '<li>Download ' . l($player['name'], $player['download_link']) . '</li>';
      }
    }
  }

  //MP3 Players list
  if (!empty($players['mp3'])) {
    $form['audiofield_audioplayer'] = array(
      '#type' => 'radios',
      '#title' => t('MP3 Audio Players'),
      '#options' => $players['mp3'],
      '#default_value' => variable_get('audiofield_audioplayer', 'google_reader'),
    );
    unset($players['mp3']);
  }

  //Other players list (wav, wma,...)
  foreach ($players as $filetype => $type_player) {
    $form['audiofield_audioplayer_' . $filetype] = array(
      '#type' => 'radios',
      '#title' => check_plain($filetype . ' ' . t('Audio Players')),
      '#options' => $type_player,
      '#default_value' => variable_get('audiofield_audioplayer_' . $filetype, 0),
    );
  }

  $form['audiofield_players_dir'] = array(
    '#type' => 'textfield',
    '#title' => t('Audio Players Directory'),
    '#description' => t('Download and extract audio players in this directory'),
    '#default_value' => variable_get('audiofield_players_dir', 'sites/all/libraries/player'),
  );

  if (!empty($download_players)) {
    $form['audiofield_downloadaudioplayer'] = array(
      '#type' => 'item',
      '#title' => t('Download and install audio players'),
      '#markup' => '<ul class="audiofield-download-players">' . $download_players . '</ul>',
    );
  }

  return system_settings_form($form);
}


/**
 * Implementation of hook_theme().
 */
function audiofield_theme() {
  $theme = array(
    // Themes for the formatters.
    'audiofield_formatter_audiofield_embedded' => array(
      'variables' => array('file' => NULL),
      'file' => 'audiofield_formatter.inc',
    ),
    'audiofield_formatter_audiofield_nodownload' => array(
      'variables' => array('file' => NULL),
      'file' => 'audiofield_formatter.inc',
    ),
  );
  $theme = array_merge($theme, _audiofield_theme());
  return $theme;
}

/**
 * Get the object for the suitable player for the parameter resource
 */
function audiofield_get_player($audio_url, $op) {
  global $base_path;
  //Lets convert $op to lowercase
  $op = strtolower($op);
  $audio_players = audiofield_players();
  $variable_name = 'audiofield_audioplayer' . ($op == 'mp3' ? '' : "_$op");
  $player_id = variable_get($variable_name, '');
  $player = isset($audio_players[$player_id]) ? $audio_players[$player_id] : NULL;
  if (empty($player)) {
    return audiofield_embeddedplayer($audio_url);
  }
  return call_user_func($player['callback'], $base_path . $player['path'], $audio_url);
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function audiofield_form_field_ui_field_edit_form_alter(&$form, &$form_state) {
  $instance = $form['#instance'];

  if ($instance['widget']['type'] == 'audiofield_widget' && $form['instance']['settings']['file_extensions']['#default_value'] == 'txt') {
    $form['instance']['settings']['file_extensions']['#default_value'] = 'mp3';
  }
}

/**
 * Implementation of hook_form_[form_id]_alter().
 *
 * Modify the add new field form to change the default formatter.
 */
function audiofield_form_field_ui_field_settings_form_alter(&$form, &$form_state) {
  $form['#submit'][] = 'audiofield_form_content_field_overview_submit';
}

/**
 * Submit handler to set a new field's formatter to "audiofield_embedded".
 */
function audiofield_form_content_field_overview_submit(&$form, &$form_state) {
  $entity_type = 'node';
  $field_name = $form_state['values']['field']['field_name'];
  $bundle = $form_state['complete form']['#bundle'];
  $instance = field_read_instance($entity_type, $field_name, $bundle);

  if ($instance['widget']['module'] == 'audiofield') {
    foreach ($instance['display'] as $display_type => $display_settings) {
      if ($instance['display'][$display_type]['type'] == 'file_default') {
        $instance['display'][$display_type]['type'] = 'audiofield_embedded';
      }
    }
    field_update_instance($instance);
  }
}

/**
 * Implements hook_filefield_sources_widgets().
 *
 * This returns a list of widgets that are compatible with FileField Sources.
 */
/*
function audiofield_filefield_sources_widgets() {
  return array('audiofield_widget');
}*/