<?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\Gallery;
  
  use OC\Files\Filesystem;
  use OC\Files\View;
  
  class AlbumThumbnail extends Thumbnail {
  
  	public function __construct($imagePath, $user = null, $square = false) {
  		if (!Filesystem::isValidPath($imagePath)) {
  			return;
  		}
  		if (is_null($user)) {
  			$this->view = Filesystem::getView();
  			$this->user = \OCP\USER::getUser();
  		} else {
  			$this->view = new View('/' . $user . '/files');
  			$this->user = $user;
  		}
  		$galleryDir = \OC_User::getHome($this->user) . '/gallery/' . $this->user . '/';
  		$this->path = $galleryDir . $imagePath . '.png';
  		if (!file_exists($this->path)) {
  			self::create($imagePath, $square);
  		}
  	}
  
  	public function create($albumPath, $square = false) {
  		$albumView = new View($this->view->getRoot() . $albumPath);
  		$images = $albumView->searchByMime('image', 10);
  
  		$count = min(count($images), 10);
  		$thumbnail = imagecreatetruecolor($count * 200, 200);
  		for ($i = 0; $i < $count; $i++) {
  			$thumb = new Thumbnail($albumPath . $images[$i]['path'], $this->user, true);
  			$image = $thumb->get();
  			if ($image && $image->valid()) {
  				imagecopy($thumbnail, $image->resource(), $i * 200, 0, 0, 0, 200, 200);
  				$image->destroy();
  			}
  		}
  
  		imagepng($thumbnail, $this->path);
  		imagedestroy($thumbnail);
  	}
  }