<?php
/**
 * ownCloud
 *
 * @author Morris Jobke, Bjoern Schiessle
 * @copyright 2014 Morris Jobke <morris.jobke@gmail.com>
 *            2014 Bjoern Schiessle <schiessle@ownlcoud.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__ . '/../appinfo/update.php';
require_once __DIR__ . '/base.php';

/**
 * Class Test_Files_Sharing_Update
 */
class Test_Files_Sharing_Update_Routine extends Test_Files_Sharing_Base {

	const TEST_FOLDER_NAME = '/folder_share_api_test';

	function setUp() {
		parent::setUp();

		$this->folder = self::TEST_FOLDER_NAME;

		$this->filename = '/share-api-test.txt';

		// save file with content
		$this->view->file_put_contents($this->filename, $this->data);
		$this->view->mkdir($this->folder);
		$this->view->file_put_contents($this->folder . '/' . $this->filename, $this->data);
	}

	function tearDown() {
		$this->view->unlink($this->filename);
		$this->view->deleteAll($this->folder);

		$removeShares = \OC_DB::prepare('DELETE FROM `*PREFIX*share`');
		$removeShares->execute();
		$removeItems = \OC_DB::prepare('DELETE FROM `*PREFIX*filecache`');
		$removeItems->execute();

		parent::tearDown();
	}

	/**
	 * test update of file permission. The update should remove from all shared
	 * files the delete permission
	 */
	function testUpdateFilePermissions() {

		self::prepareDBUpdateFilePermissions();
		// run the update routine to update the share permission
		updateFilePermissions(2);

		// verify results
		$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share`');
		$result = $query->execute(array());

		while ($row = $result->fetchRow()) {
			if ($row['item_type'] === 'file') {
				// for all files the delete permission should be removed
				$this->assertSame(0, (int)$row['permissions'] & \OCP\PERMISSION_DELETE);
			} else {
				// for all other the permission shouldn't change
				$this->assertSame(31, (int)$row['permissions'] & \OCP\PERMISSION_ALL);
			}
		}

		// cleanup
		$this->cleanupSharedTable();
	}

	/**
	 * @medium
	 */
	function testRemoveBrokenFileShares() {

		$this->prepareFileCache();

		// check if there are just 4 shares (see setUp - precondition: empty table)
		$countAllShares = \OC_DB::prepare('SELECT COUNT(`id`) FROM `*PREFIX*share`');
		$result = $countAllShares->execute()->fetchOne();
		$this->assertEquals(4, $result);

		// check if there are just 3 file shares (see setUp - precondition: empty table)
		$countFileShares = \OC_DB::prepare('SELECT COUNT(`id`) FROM `*PREFIX*share` WHERE `item_type` IN (\'file\', \'folder\')');
		$result = $countFileShares->execute()->fetchOne();
		$this->assertEquals(3, $result);

		// check if there are just 2 items (see setUp - precondition: empty table)
		$countItems = \OC_DB::prepare('SELECT COUNT(`fileid`) FROM `*PREFIX*filecache`');
		$result = $countItems->execute()->fetchOne();
		$this->assertEquals(2, $result);

		// execute actual code which should be tested
		\OC\Files\Cache\Shared_Updater::fixBrokenSharesOnAppUpdate();

		// check if there are just 2 shares (one gets killed by the code as there is no filecache entry for this)
		$result = $countFileShares->execute()->fetchOne();
		$this->assertEquals(2, $result);

		// check if the share of file '200' is removed as there is no entry for this in filecache table
		$countFileShares = \OC_DB::prepare('SELECT COUNT(`id`) FROM `*PREFIX*share` WHERE `file_source` = 200');
		$result = $countFileShares->execute()->fetchOne();
		$this->assertEquals(0, $result);

		// check if there are just 2 items
		$countItems = \OC_DB::prepare('SELECT COUNT(`fileid`) FROM `*PREFIX*filecache`');
		$result = $countItems->execute()->fetchOne();
		$this->assertEquals(2, $result);

		// the calendar share survived
		$countOtherShares = \OC_DB::prepare('SELECT COUNT(`id`) FROM `*PREFIX*share` WHERE `item_source` = \'999\'');
		$result = $countOtherShares->execute()->fetchOne();
		$this->assertEquals(1, $result);
	}

	/**
	 * test update for the removal of the logical "Shared" folder. It should update
	 * the file_target for every share and create a physical "Shared" folder for each user
	 */
	function testRemoveSharedFolder() {
		self::prepareDB();
		// run the update routine to remove the shared folder and replace it with a real folder
		removeSharedFolder(false, 2);

		// verify results
		$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share`');
		$result = $query->execute(array());

		$newDBContent = $result->fetchAll();

		foreach ($newDBContent as $row) {
			if ((int)$row['share_type'] === \OCP\Share::SHARE_TYPE_USER) {
				$this->assertSame('/Shared', substr($row['file_target'], 0, strlen('/Shared')));
			} else {
				$this->assertSame('/ShouldNotChange', $row['file_target']);
			}
		}

		$shareFolder = \OCP\Config::getSystemValue('share_folder', '/');

		$this->assertSame('/Shared', $shareFolder);

		// cleanup
		$this->cleanupSharedTable();
		\OCP\Config::deleteSystemValue('share_folder');

	}

	private function cleanupSharedTable() {
		$query = \OC_DB::prepare('DELETE FROM `*PREFIX*share`');
		$query->execute();
	}

	/**
	 * prepare sharing table for testRemoveSharedFolder()
	 */
	private function prepareDB() {
		$this->cleanupSharedTable();
		// add items except one - because this is the test case for the broken share table
		$addItems = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`share_type`, `item_type`, ' .
			'`share_with`, `uid_owner` , `file_target`) ' .
			'VALUES (?, ?, ?, ?, ?)');
		$items = array(
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user1', 'admin' , '/foo'),
			array(\OCP\Share::SHARE_TYPE_USER, 'folder', 'user2', 'admin', '/foo2'),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user3', 'admin', '/foo3'),
			array(\OCP\Share::SHARE_TYPE_USER, 'folder', 'user4', 'admin', '/foo4'),
			array(\OCP\Share::SHARE_TYPE_USER, 'folder', 'user4', 'admin', "/foo'4"),
			array(\OCP\Share::SHARE_TYPE_LINK, 'file', 'user1', 'admin', '/ShouldNotChange'),
			array(\OCP\Share::SHARE_TYPE_CONTACT, 'contact', 'admin', 'user1', '/ShouldNotChange'),

			);
		foreach($items as $item) {
			// the number is used as path_hash
			$addItems->execute($item);
		}
	}

	/**
	 * prepare sharing table for testUpdateFilePermissions()
	 */
	private function prepareDBUpdateFilePermissions() {
		$this->cleanupSharedTable();
		// add items except one - because this is the test case for the broken share table
		$addItems = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`share_type`, `item_type`, ' .
			'`share_with`, `uid_owner` , `file_target`, `permissions`) ' .
			'VALUES (?, ?, ?, ?, ?, ?)');
		$items = array(
			array(\OCP\Share::SHARE_TYPE_LINK, 'file', 'user1', 'admin', '/foo', \OCP\PERMISSION_ALL),
			array(\OCP\Share::SHARE_TYPE_CONTACT, 'contact', 'admin', 'user1', '/foo', \OCP\PERMISSION_ALL),
			array(\OCP\Share::SHARE_TYPE_USER, 'folder', 'user4', 'admin', '/foo', \OCP\PERMISSION_ALL),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user3', 'admin', '/foo3', \OCP\PERMISSION_ALL),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user1', 'admin' , '/foo', \OCP\PERMISSION_DELETE),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user1', 'admin' , '/foo', \OCP\PERMISSION_READ & \OCP\PERMISSION_DELETE),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user1', 'admin' , '/foo', \OCP\PERMISSION_SHARE & \OCP\PERMISSION_UPDATE),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user1', 'admin' , '/foo', \OCP\PERMISSION_ALL),
			array(\OCP\Share::SHARE_TYPE_USER, 'file', 'user1', 'admin' , '/foo', \OCP\PERMISSION_SHARE & \OCP\PERMISSION_READ & \OCP\PERMISSION_DELETE),
			);
		foreach($items as $item) {
			// the number is used as path_hash
			$addItems->execute($item);
		}
	}

	/**
	 * prepare file cache for testRemoveBrokenShares()
	 */
	private function prepareFileCache() {
		// some previous tests didn't clean up and therefore this has to be done here
		// FIXME: DIRTY HACK - TODO: find tests, that don't clean up and fix it there
		$this->tearDown();

		// add items except one - because this is the test case for the broken share table
		$addItems = \OC_DB::prepare('INSERT INTO `*PREFIX*filecache` (`storage`, `path_hash`, ' .
			'`parent`, `mimetype`, `mimepart`, `size`, `mtime`, `storage_mtime`) ' .
			'VALUES (1, ?, 1, 1, 1, 1, 1, 1)');
		$items = array(1, 3);
		$fileIds = array();
		foreach($items as $item) {
			// the number is used as path_hash
			$addItems->execute(array($item));
			$fileIds[] = \OC_DB::insertId('*PREFIX*filecache');
		}

		$addShares = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`file_source`, `item_type`, `uid_owner`) VALUES (?, \'file\', 1)');
		// the number is used as item_source
		$addShares->execute(array($fileIds[0]));
		$addShares->execute(array(200)); // id of "deleted" file
		$addShares->execute(array($fileIds[1]));

		// add a few unrelated shares, calendar share that must be left untouched
		$addShares = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`item_source`, `item_type`, `uid_owner`) VALUES (?, \'calendar\', 1)');
		// the number is used as item_source
		$addShares->execute(array(999));
	}

}