<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Joas Schilling <coding@schilljs.com>
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin Appelman <robin@icewind.nl>
 * @author Robin McCorkell <robin@mccorkell.me.uk>
 * @author Roeland Jago Douma <roeland@famdouma.nl>
 * @author Ross Nicoll <jrn@jrn.me.uk>
 * @author Vincent Petry <pvince81@owncloud.com>
 *
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program 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, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OCA\Files_External\AppInfo;

use \OCP\AppFramework\App;
use OCP\AppFramework\IAppContainer;
use \OCA\Files_External\Service\BackendService;
use \OCA\Files_External\Lib\Config\IBackendProvider;
use \OCA\Files_External\Lib\Config\IAuthMechanismProvider;
use OCA\Files_External\Lib\Auth\AmazonS3\AccessKey;
use OCA\Files_External\Lib\Auth\OpenStack\Rackspace;
use OCA\Files_External\Lib\Auth\OpenStack\OpenStackV2;
use OCA\Files_External\Lib\Auth\OpenStack\OpenStackV3;
use OCA\Files_External\Lib\Auth\PublicKey\RSA;
use OCA\Files_External\Lib\Auth\OAuth2\OAuth2;
use OCA\Files_External\Lib\Auth\OAuth1\OAuth1;
use OCA\Files_External\Lib\Auth\Password\GlobalAuth;
use OCA\Files_External\Lib\Auth\Password\UserProvided;
use OCA\Files_External\Lib\Auth\Password\LoginCredentials;
use OCA\Files_External\Lib\Auth\Password\SessionCredentials;
use OCA\Files_External\Lib\Auth\Password\Password;
use OCA\Files_External\Lib\Auth\Builtin;
use OCA\Files_External\Lib\Auth\NullMechanism;
use OCA\Files_External\Lib\Backend\SMB_OC;
use OCA\Files_External\Lib\Backend\SMB;
use OCA\Files_External\Lib\Backend\SFTP_Key;
use OCA\Files_External\Lib\Backend\Swift;
use OCA\Files_External\Lib\Backend\AmazonS3;
use OCA\Files_External\Lib\Backend\SFTP;
use OCA\Files_External\Lib\Backend\OwnCloud;
use OCA\Files_External\Lib\Backend\DAV;
use OCA\Files_External\Lib\Backend\FTP;
use OCA\Files_External\Lib\Backend\Local;
use OCP\Files\Config\IUserMountCache;

/**
 * @package OCA\Files_External\AppInfo
 */
class Application extends App implements IBackendProvider, IAuthMechanismProvider {

	public function __construct(array $urlParams = array()) {
		parent::__construct('files_external', $urlParams);

		$container = $this->getContainer();

		$container->registerService(IUserMountCache::class, function (IAppContainer $c) {
			return $c->getServer()->query('UserMountCache');
		});

		$backendService = $container->query(BackendService::class);
		$backendService->registerBackendProvider($this);
		$backendService->registerAuthMechanismProvider($this);

		// force-load auth mechanisms since some will register hooks
		// TODO: obsolete these and use the TokenProvider to get the user's password from the session
		$this->getAuthMechanisms();

		// app developers: do NOT depend on this! it will disappear with oC 9.0!
		\OC::$server->getEventDispatcher()->dispatch(
			'OCA\\Files_External::loadAdditionalBackends'
		);
	}

	/**
	 * @{inheritdoc}
	 */
	public function getBackends() {
		$container = $this->getContainer();

		$backends = [
			$container->query(Local::class),
			$container->query(FTP::class),
			$container->query(DAV::class),
			$container->query(OwnCloud::class),
			$container->query(SFTP::class),
			$container->query(AmazonS3::class),
			$container->query(Swift::class),
			$container->query(SFTP_Key::class),
			$container->query(SMB::class),
			$container->query(SMB_OC::class),
		];

		return $backends;
	}

	/**
	 * @{inheritdoc}
	 */
	public function getAuthMechanisms() {
		$container = $this->getContainer();

		return [
			// AuthMechanism::SCHEME_NULL mechanism
			$container->query(NullMechanism::class),

			// AuthMechanism::SCHEME_BUILTIN mechanism
			$container->query(Builtin::class),

			// AuthMechanism::SCHEME_PASSWORD mechanisms
			$container->query(Password::class),
			$container->query(SessionCredentials::class),
			$container->query(LoginCredentials::class),
			$container->query(UserProvided::class),
			$container->query(GlobalAuth::class),

			// AuthMechanism::SCHEME_OAUTH1 mechanisms
			$container->query(OAuth1::class),

			// AuthMechanism::SCHEME_OAUTH2 mechanisms
			$container->query(OAuth2::class),

			// AuthMechanism::SCHEME_PUBLICKEY mechanisms
			$container->query(RSA::class),

			// AuthMechanism::SCHEME_OPENSTACK mechanisms
			$container->query(OpenStackV2::class),
			$container->query(OpenStackV3::class),
			$container->query(Rackspace::class),

			// Specialized mechanisms
			$container->query(AccessKey::class),
		];
	}

}