<?php
// $Id: swftools_flowplayer.module,v 1.5 2010-05-06 19:58:39 stuartgreenfield Exp $

/**
 * @file
 * Enables SWF Tools support for FlowPlayer.
 */

/**
 * Implementation of hook_swftools_methods().
 */
function swftools_flowplayer_swftools_methods() {

  // FlowPlayer has a few different player files, so we need to determine
  // which one is currently active
  $saved_settings = _swftools_flowplayer_settings();

  $shared_file = $saved_settings['player'];

  $flowplayer = array(
    'module'      => 'swftools_flowplayer',
    'title'       => t('FlowPlayer'),
    'download'    => 'http://www.tucows.com/download.html?software_id=519713&t=2',
    'width'       => 320,
    'height'      => 263,
    'library'     => 'sites/all/libraries/' . $shared_file,
  );

  // FlowPlayer support various actions with the same player and info.
  $methods['video']['flowplayer'] = $flowplayer;
  $methods['video_list']['flowplayer'] = $flowplayer;
  $methods['audio']['flowplayer'] = $flowplayer;
  $methods['audio_list']['flowplayer'] = $flowplayer;
  $methods['media_list']['flowplayer'] = $flowplayer;
  $methods['image_list']['flowplayer'] = $flowplayer;

  return $methods;
}

/**
 * Implementation of hook_menu().
 */
function swftools_flowplayer_menu() {

  $items['admin/settings/swftools/flowplayer'] = array(
    'title' => 'FlowPlayer',
    'description' => 'Settings for '. l('FlowPlayer', 'http://www.tucows.com/download.html?software_id=519713&t=2') .'.',
    'access arguments' => array('administer flash'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('swftools_flowplayer_admin_form'),
    'file' => 'swftools_flowplayer.admin.inc',
  );

  return $items;
  
}


/**
 * Implementation of hook_swftools_preprocess_[player]().
 */
function swftools_flowplayer_swftools_preprocess_flowplayer(&$data) {

  // Pad out the user parameters (like those passed through swf(), with our
  // configured defaults, allowing the user parameters to dominate.
  $defaults = _swftools_flowplayer_flashvars();

  // Merge defaults and user supplied values, letting user supplied values dominate
  $data['flashvars'] = array_merge($defaults, $data['flashvars']);

  // If an image is set then use it
  if ($data['flashvars']['image']) {
    
    // Retrieve path data
    $source = swftools_get_url_and_path($data['flashvars']['image']);
    
    // If a path was returned then assign it to the flashvar
    if ($source) {
      $data['flashvars']['image'] = $source['fileurl'];
    }
    
  }

//  if ($vars->params['width']) {$flashvars['width'] = $vars->params['width'];}
//  if ($vars->params['height']) {$flashvars['height'] = $vars->params['height'];}

  /* FlowPlayer doesn't like "" when JSON is generated, so we have to construct it ourselves here
   * and assign it to the variable config.
   * Build an array of FlowPlayer configuration settings, then call drupal_to_js to convert
   * to JSON format, and then run through str_replac to make FlowPlayer happy!
   */

  // Initialise array of FlowPlayer configuration settings
  $flowplayer = array();

  // Are we handling a playlist?
  if ($data['othervars']['playlist_data']) {

    // Initialise array to hold data
    $playlist = array();

    // Get file paths out of existing array and start to form FlowPlayer format
    foreach ($data['othervars']['playlist_data']['playlist'] as $play) {
      $playlist[] = "{ url: '".$play['fileurl']."' }";
    }

    // Implode the array to create a flashvar ready for later
    $flowplayer['playList'] = '[ '. implode(', ', $playlist) .' ]';
  } else {

    // If not a playlist simply assign file_url to videoFile
    $flowplayer['videoFile'] = $data['othervars']['file_url'];
  }

  // Find out what configuration settings are available
  $available_settings = swftools_flowplayer_swftools_variable_mapping();

  // See which ones have been set in othervars and copy to flowplayer array
  foreach ($available_settings['flowplayer'] as $setting => $value) {

    if (isset($data['flashvars'][$setting])) {
      $flowplayer[$setting] = $data['flashvars'][$setting];
      unset($data['flashvars'][$setting]);
    }
  }

  /**
   * FlowPlayer uses 'loop' as the parameter to control looping
   * This is already used as flash parameter so using loop in a
   * filter means it isn't passed in the flashvars array. So copy
   * whatever value we have in the parameter to flowplayer array
   */
  if (isset($data['othervars']['loop']) && $data['othervars']['loop'])  {
    $flowplayer['loop'] = $data['othervars']['loop'];
  }

  // Merge $data['othervars'] in to flashvars
  //$flowplayer = array_merge($flowplayer, $data['othervars']);

  // Convert to JSON
  $data['flashvars']['config'] = drupal_to_js($flowplayer);

  // Replace " with ', and remove quotes from around true and false, to satisfy FlowPlayer
  $data['flashvars']['config'] = str_replace(array('"', "'false'", "'true'", "'[", "]'"), array("'", "false", "true", "[", "]"), $data['flashvars']['config']);

  // If we had a playlist then the ' has been escaped, so reverse it where it occurs in the playlist
  if (isset($playlist) && $playlist) {
    $data['flashvars']['config'] = str_replace(array("url: \'", "\' }"), array("url: '", "' }"), $data['flashvars']['config']);
  }

}

/**
 * This function is called from flowplayer_swftools_flashvars() which is called from swf()
 * It will return the default flashvar configuration, just prior to any overrides
 * passed into swf(). We start with the settings defined on admin/swf/wijering
 * which are returned by _swftools_flowplayer_settings(). Then we prepare these values for output
 * to html (eg. '1' become 'true') and we unset undefined flashvars to prevent their output.
 *
 */
function _swftools_flowplayer_flashvars() {

  // Cache this
  static $flashvars = array();
  
  // If defaults not already retrieved then fetch now
  if (!count($flashvars)) {

    // Get saved settings for this method.
    $defaults = _swftools_flowplayer_settings();

    // Unset values defined as default, and set booleans properly
    foreach ($defaults AS $key => $value) {

      if (!$value || $value == 'default') {
        unset($defaults[$key]);
      }
      else if (in_array($key, array('usePlayOverlay', 'hideControls', 'showFullScreenButton', 'showPlayListButtons', 'autoPlay', 'loop'))) {
        $defaults[$key] = _swftools_tf($value);
      }
    
    }
  
  }

  // Returning resulting defaults
  return $defaults;

}


function swftools_flowplayer_swftools_playlist_flowplayer($data) {

  $xml = '<playlist version="1" xmlns="http://xspf.org/ns/0/">
            <title>'. $xml_data['header']['title'] .'</title>
            <info></info>
            <annotation></annotation>
            <trackList>
            ';
  foreach ($data['othervars']['playlist_data']['playlist'] AS $track => $details) {

    if (!isset($details['background']) && strtolower(substr($details['fileurl'], -3, 3)) == 'mp3') {
      if ($data['flashvars']['image']) {
        $source = swftools_get_url_and_path($data['flashvars']['image']);
        $details['background'] = "<image>". $source['fileurl'] ."</image>\n";;
      } else {
        //$details['background'] = url(drupal_get_path('module', 'swftools') . '/' . SWFTOOLS_DEFAULT_BG, array('absolute' => TRUE));
        $details['background'] = '';
      }
    }
    $xml .= "<track>\n";
    $xml .= "<title>". $details['title'] ."</title>\n";
    $xml .= "<creator></creator>\n";
    $xml .= "<location>". $details['fileurl'] ."</location>\n";
    $xml .= $details['background'];
    $xml .= "<info>". $details['fileurl'] ."</info>\n";
    $xml .= "</track>\n";
  }
  $xml .= '</trackList>
           </playlist>';
  return $xml;
}


/*
 * Implementation of hook_swftools_variable_mapping.
 * We don't map anything to flashvars, but we want to know what
 * settings are available
 *
 */
function swftools_flowplayer_swftools_variable_mapping() {
  return array(
    'flowplayer' => array(
      'videoFile'               => 'flashvars',
      'autoPlay'                => 'flashvars',
      'initialVolumePercentage' => 'flashvars',
      'usePlayOverlay'          => 'flashvars',
      'controlBarGloss'         => 'flashvars',
      'hideControls'            => 'flashvars',
      'loop'                    => 'flashvars',
      'fullscreen'              => 'flashvars',
      'showFullScreenButton'    => 'flashvars',
      'showPlayListButtons'     => 'flashvars',
    ),
  );
}


/**
 * These are the default settings as they are stored in the database and displayed
 * on the settings page.
 */
function _swftools_flowplayer_settings() {

  // Define the settings list.
  $defaults = array(
    'player'                  => 'flowplayer/FlowPlayerClassic.swf',  
    'usePlayOverlay'          => 'default',
    'hideControls'            => 'default',
    'controlBarGloss'         => 'default',
    'showFullScreenButton'    => 'default',
    'showPlayListButtons'     => 'default',
    'autoPlay'                => 'default',
    'loop'                    => 'default',  
    'initialVolumePercentage' => '',  
  );

  // Retrieve settings from database, if available
  $saved_settings = variable_get('swftools_flowplayer', $defaults);

  // Return resulting defaults
  return $saved_settings;
  
}


/**
 * Implementation of hook_help
 */
function swftools_flowplayer_help($path, $arg) {
  switch ($path) {
    case 'admin/settings/swftools/flowplayer':
      return '<p>'.t('These are the settings for the FlowPlayer media player.
                      For details of what each parameter does refer to the
                      <a href="@flowplayer">FlowPlayer documentation</a>.
                      It is possible that you do not need to change any of
                      these settings and blank values will defer to friendly
                      defaults. Note that the label in (<em>brackets</em>)
                      is the configuration setting name and corresponds to the documentation page.
                      If content is embedded using the SWF Tools filter then each parameter
                      can be over-ridden by specifying a new value in the filter string.', array('@flowplayer' => 'http://flowplayer.org/v2/player/index.html')).'</p>';
  }
}