<?php
  /**
   * ownCloud - Load the avatar of an contact via an ownCloud user avatar
   *
   * @author Tobia De Koninck
   * @copyright 2014 Tobia De Koninck  (tobia@ledfan.be)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
   * License as published by the Free Software Foundation; either
   * version 3 of the License, or any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
   *
   * You should have received a copy of the GNU Affero General Public
   * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
   *
   */
  
  namespace OCA\Contacts\Utils\TemporaryPhoto;
  
  use OCA\Contacts\Contact as ContactObject,
  	OCA\Contacts\Utils\TemporaryPhoto as BaseTemporaryPhoto,
  	OCP\ICache;
  
  /**
   * This class loads the PHOTO or LOGO property from a contact.
   */
  class User extends BaseTemporaryPhoto {
  
  	/**
  	 * The Contact object to load the image from
  	 *
  	 * @var OCA\Contacts\Contact
  	 */
  	protected $userId;
  
  	public function __construct(ICache $cache, $userId) {
  		parent::__construct($cache);
  		// check if userId is a real ownCloud user
  		if(!in_array($userId, \OCP\User::getUsers())){
  			throw new \Exception('Second argument must be an ownCloud user ID');
  		}
  		$this->userId = $userId;
  		$this->processImage();
  	}
  
  	/**
  	 * Do what's needed to get the image from storage
  	 * depending on the type.
  	 */
  	protected function processImage() {
  		$localPath = \OCP\Config::getSystemValue('datadirectory') . '/' . $this->userId . '/avatar.';
  		if (file_exists($localPath . 'png')){
  			$localPath .= 'png';
  		} else if (file_exists($localPath . 'jpg')){
  			$localPath .= 'jpg';
  		}
  
  		$this->image = new \OCP\Image();
  		$this->image->loadFromFile($localPath);
  	}
  
  }