<?php
  /**
   * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  
  namespace OCA\Media;
  
  require_once 'getid3/getid3.php';
  
  interface Extractor {
  	/**
  	 * get metadata info for a media file
  	 *
  	 * @param $path
  	 * @return array
  	 */
  	public function extract($path);
  }
  
  /**
   * pure php id3 extractor
   */
  class Extractor_GetID3 implements Extractor {
  	/**
  	 * @var \getID3 $getID3;
  	 */
  	private $getID3;
  
  	public function __construct() {
  		$this->getID3 = @new \getID3();
  		$this->getID3->encoding = 'UTF-8';
  		
  		// Trying to enable stream support
  		if(ini_get('allow_url_fopen') != 1) {
  			\OCP\Util::writeLog('Media', 'allow_url_fopen is disabled. It is strongly advised to enable it in your php.ini', \OCP\Util::WARN);
  			@ini_set('allow_url_fopen', '1');
  		}
  	}
  
  	/**
  	 * get metadata info for a media file
  	 *
  	 * @param $path
  	 * @return array
  	 */
  	public function extract($path) {
  		if(ini_get('allow_url_fopen')) {
  			$file = \OC\Files\Filesystem::getView()->getAbsolutePath($path);
  			$data = @$this->getID3->analyze('oc://' . $file);
  		} else {
  			// Fallback to the local FS
  			$file = \OC\Files\Filesystem::getLocalFile($path);
  		}
  		\getid3_lib::CopyTagsToComments($data);
  		
  		return $data;
  	}
  
  }