<?php
  /**

   * ownCloud
   *
   * @author Bjoern Schiessle
   * @copyright 2013 Bjoern Schiessle <schiessle@owncloud.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 Affero General Public
   * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
   *

   */

  require_once __DIR__ . '/../../../lib/base.php';
  require_once __DIR__ . '/../lib/crypt.php';
  require_once __DIR__ . '/../lib/keymanager.php';
  require_once __DIR__ . '/../lib/proxy.php';
  require_once __DIR__ . '/../lib/stream.php';
  require_once __DIR__ . '/../lib/util.php';
  require_once __DIR__ . '/../appinfo/app.php';
  require_once __DIR__ . '/util.php';
  
  use OCA\Encryption;
  
  /**
   * Class Test_Encryption_Proxy

   * this class provide basic proxy app tests

   */
  class Test_Encryption_Proxy extends \PHPUnit_Framework_TestCase {
  
  	const TEST_ENCRYPTION_PROXY_USER1 = "test-proxy-user1";
  
  	public $userId;
  	public $pass;
  	/**

  	 * @var \OC\Files\View

  	 */

  	public $view;     // view in /data/user/files
  	public $rootView; // view on /data/user

  	public $data;

  	public $filename;

  
  	public static function setUpBeforeClass() {
  		// reset backend
  		\OC_User::clearBackends();
  		\OC_User::useBackend('database');
  
  		\OC_Hook::clear('OC_Filesystem');
  		\OC_Hook::clear('OC_User');
  
  		// Filesystem related hooks
  		\OCA\Encryption\Helper::registerFilesystemHooks();
  
  		// clear and register hooks
  		\OC_FileProxy::clearProxies();
  		\OC_FileProxy::register(new OCA\Encryption\Proxy());
  
  		// create test user
  		\Test_Encryption_Util::loginHelper(\Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1, true);
  	}
  
  	function setUp() {
  		// set user id
  		\OC_User::setUserId(\Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1);
  		$this->userId = \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1;
  		$this->pass = \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1;
  
  		// init filesystem view

  		$this->view = new \OC\Files\View('/'. \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1 . '/files');
  		$this->rootView = new \OC\Files\View('/'. \Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1 );

  
  		// init short data
  		$this->data = 'hats';

  		$this->filename = 'enc_proxy_tests-' . uniqid() . '.txt';

  	}
  
  	public static function tearDownAfterClass() {
  		// cleanup test user
  		\OC_User::deleteUser(\Test_Encryption_Proxy::TEST_ENCRYPTION_PROXY_USER1);
  	}
  
  	/**
  	 * @medium

  	 * test if postFileSize returns the unencrypted file size

  	 */
  	function testPostFileSize() {

  		$this->view->file_put_contents($this->filename, $this->data);

  
  		\OC_FileProxy::$enabled = false;

  		$unencryptedSize = $this->view->filesize($this->filename);

  
  		\OC_FileProxy::$enabled = true;

  		$encryptedSize = $this->view->filesize($this->filename);

  
  		$this->assertTrue($encryptedSize !== $unencryptedSize);

  		// cleanup
  		$this->view->unlink($this->filename);

  	}

  	function testPostFileSizeWithDirectory() {
  
  		$this->view->file_put_contents($this->filename, $this->data);
  
  		\OC_FileProxy::$enabled = false;
  
  		// get root size, must match the file's unencrypted size
  		$unencryptedSize = $this->view->filesize('');
  
  		\OC_FileProxy::$enabled = true;
  
  		$encryptedSize = $this->view->filesize('');
  
  		$this->assertTrue($encryptedSize !== $unencryptedSize);
  
  		// cleanup
  		$this->view->unlink($this->filename);
  
  	}

  }