<?php

/**
 * ownCloud - gallery application
 *
 * @author Bartek Przybylski
 * @copyright 2012 Bartek Przybylski bart.p.pl@gmail.com
 * 
 * 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 Lesser General Public 
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
class OC_Gallery_Photo {

	public static function create($albumId, $img) {
		$stmt = OCP\DB::prepare('INSERT INTO *PREFIX*gallery_photos (album_id, file_path) VALUES (?, ?)');
		$stmt->execute(array($albumId, $img));
	}

	public static function find($albumId, $img = null) {
		$sql = 'SELECT * FROM *PREFIX*gallery_photos WHERE album_id = ?';
		$args = array($albumId);
		if (!is_null($img)) {
			$sql .= ' AND file_path = ?';
			$args[] = $img;
		}
		$stmt = OCP\DB::prepare($sql);
		return $stmt->execute($args);
	}

	public static function findForAlbum($owner, $album_name) {
		$stmt = OCP\DB::prepare('SELECT *'
					.' FROM *PREFIX*gallery_photos photos,'
						.' *PREFIX*gallery_albums albums'
					.' WHERE albums.uid_owner = ?'
						.' AND albums.album_name = ?'
						.' AND photos.album_id = albums.album_id');
		return $stmt->execute(array($owner, $album_name));
	}

	public static function removeByPath($path, $album_id) {
		$stmt = OCP\DB::prepare('DELETE FROM *PREFIX*gallery_photos WHERE file_path LIKE ? and album_id = ?');
		$stmt->execute(array($path, $album_id));
	}

	public static function removeById($id) {
		$stmt = OCP\DB::prepare('DELETE FROM *PREFIX*gallery_photos WHERE photo_id = ?');
		$stmt->execute(array($id));
	}

	public static function removeByAlbumId($albumid) {
		$stmt = OCP\DB::prepare('DELETE FROM *PREFIX*gallery_photos WHERE album_id = ?');
		$stmt->execute(array($albumid));
	}

	public static function changePath($oldAlbumId, $newAlbumId, $oldpath, $newpath) {
		$stmt = OCP\DB::prepare("UPDATE *PREFIX*gallery_photos SET file_path = ?, album_id = ? WHERE album_id = ? and file_path = ?");
		$stmt->execute(array($newpath, $newAlbumId, $oldAlbumId, $oldpath));
	}

	public static function getThumbnail($image_name, $owner = null) {
		if (!$owner)
			$owner = OCP\USER::getUser();
		$view = OCP\Files::getStorage('gallery');
		$save_dir = dirname($image_name);
		if (!$view->is_dir($save_dir)) {
			$view->mkdir($save_dir);
		}
		$view->chroot($view->getRoot() . '/' . $save_dir);
		$thumb_file = basename($image_name);
		if ($view->file_exists($thumb_file)) {
			$image = new OC_Image($view->fopen($thumb_file, 'r'));
		} else {
			$image_path = OC_Filesystem::getLocalFile($image_name);
			if (!file_exists($image_path)) {
				return null;
			}
			$image = new OC_Image($image_path);
			if ($image->valid()) {
				$image->centerCrop(200);
				$image->fixOrientation();
				$image->save($view->getLocalFile($thumb_file));
			}
		}
		if ($image->valid()) {
			return $image;
		} else {
			$image->destroy();
		}
		return null;
	}

	public static function getViewImage($image_name, $owner = null) {
		if (!$owner) $owner = OCP\USER::getUser();
		$save_dir = OCP\Config::getSystemValue("datadirectory") . '/' . $owner . '/gallery';
		$save_dir .= dirname($image_name) . '/view/';
		$image_path = $image_name;
		$view_file = $save_dir . basename($image_name);
		if (!is_dir($save_dir)) {
			mkdir($save_dir, 0777, true);
		}
		if (file_exists($view_file)) {
			$image = new OC_Image($view_file);
		} else {
			$image_path = OC_Filesystem::getLocalFile($image_path);
			if (!file_exists($image_path)) {
				return null;
			}
			$image = new OC_Image($image_path);
			if ($image->valid()) {
				$image->resize(1200);
				$image->fixOrientation();
				$image->save($view_file);
			}
		}
		if ($image->valid()) {
			return $image;
		} else {
			$image->destroy();
		}
		return null;
	}

	public static function getGalleryRoot() {
		return OCP\Config::getUserValue(OCP\USER::getUser(), 'gallery', 'root', '');
	}

}