<?php
/**
 * @author Bernhard Posselt <dev@bernhard-posselt.com>
 * @author Christoph Wurst <christoph@owncloud.com>
 * @author Joas Schilling <coding@schilljs.com>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin McCorkell <robin@mccorkell.me.uk>
 * @author Roeland Jago Douma <rullzer@owncloud.com>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 * @author Thomas Tanghus <thomas@tanghus.net>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @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 OC\AppFramework\DependencyInjection;

use OC;
use OC\AppFramework\Core\API;
use OC\AppFramework\Http;
use OC\AppFramework\Http\Dispatcher;
use OC\AppFramework\Http\Output;
use OC\AppFramework\Middleware\MiddlewareDispatcher;
use OC\AppFramework\Middleware\Security\CORSMiddleware;
use OC\AppFramework\Middleware\Security\SecurityMiddleware;
use OC\AppFramework\Middleware\SessionMiddleware;
use OC\AppFramework\Utility\SimpleContainer;
use OC\Core\Middleware\AccountModuleMiddleware;
use OC\Core\Middleware\TwoFactorMiddleware;
use OCP\App\IServiceLoader;
use OCP\AppFramework\IApi;
use OCP\AppFramework\IAppContainer;
use OCP\Files\Mount\IMountManager;
use OCP\IDateTimeFormatter;

class DIContainer extends SimpleContainer implements IAppContainer {

	/**
	 * @var array
	 */
	private $middleWares = [];

	/**
	 * Put your class dependencies in here
	 * @param string $appName the name of the app
	 */
	public function __construct($appName, $urlParams = []) {
		parent::__construct();
		$this['AppName'] = $appName;
		$this['urlParams'] = $urlParams;

		/** @var \OC\ServerContainer $server */
		$server = $this->getServer();
		$server->registerAppContainer($appName, $this);

		// aliases
		$this->registerAlias('appName', 'AppName');
		$this->registerAlias('webRoot', 'WebRoot');
		$this->registerAlias('userId', 'UserId');

		/**
		 * Core services
		 */
		$this->registerService('OCP\\IAppConfig', function ($c) {
			return $this->getServer()->getAppConfig();
		});

		$this->registerService('OCP\\App\\IAppManager', function ($c) {
			return $this->getServer()->getAppManager();
		});

		$this->registerService('OCP\\AppFramework\\Http\\IOutput', function ($c) {
			return new Output($this->getServer()->getWebRoot());
		});

		$this->registerService('OCP\\IAvatarManager', function ($c) {
			return $this->getServer()->getAvatarManager();
		});

		$this->registerService('OCP\\Activity\\IManager', function ($c) {
			return $this->getServer()->getActivityManager();
		});

		$this->registerService('OCP\\ICache', function ($c) {
			return $this->getServer()->getCache();
		});

		$this->registerService('OCP\\ICacheFactory', function ($c) {
			return $this->getServer()->getMemCacheFactory();
		});

		$this->registerService('OC\\CapabilitiesManager', function ($c) {
			return $this->getServer()->getCapabilitiesManager();
		});

		$this->registerService('OCP\Comments\ICommentsManager', function ($c) {
			return $this->getServer()->getCommentsManager();
		});

		$this->registerService('OCP\\IConfig', function ($c) {
			return $this->getServer()->getConfig();
		});

		$this->registerService('OCP\\Contacts\\IManager', function ($c) {
			return $this->getServer()->getContactsManager();
		});

		$this->registerService('OCP\\IDateTimeZone', function ($c) {
			return $this->getServer()->getDateTimeZone();
		});

		$this->registerService('OCP\\IDb', function ($c) {
			return $this->getServer()->getDb();
		});

		$this->registerService('OCP\\IDBConnection', function ($c) {
			return $this->getServer()->getDatabaseConnection();
		});

		$this->registerService('OCP\\Diagnostics\\IEventLogger', function ($c) {
			return $this->getServer()->getEventLogger();
		});

		$this->registerService('OCP\\Diagnostics\\IQueryLogger', function ($c) {
			return $this->getServer()->getQueryLogger();
		});

		$this->registerService('OCP\\Files\\IMimeTypeDetector', function ($c) {
			return $this->getServer()->getMimeTypeDetector();
		});

		$this->registerService('OCP\\Files\\Config\\IMountProviderCollection', function ($c) {
			return $this->getServer()->getMountProviderCollection();
		});

		$this->registerService('OCP\\Files\\IRootFolder', function ($c) {
			return $this->getServer()->getRootFolder();
		});

		$this->registerService('OCP\\Http\\Client\\IClientService', function ($c) {
			return $this->getServer()->getHTTPClientService();
		});

		$this->registerService('OCP\\IGroupManager', function ($c) {
			return $this->getServer()->getGroupManager();
		});

		$this->registerService('OCP\\Http\\Client\\IClientService', function () {
			return $this->getServer()->getHTTPClientService();
		});

		$this->registerService('OCP\\IL10N', function ($c) {
			return $this->getServer()->getL10N($c->query('AppName'));
		});

		$this->registerService('OCP\\L10N\\IFactory', function ($c) {
			return $this->getServer()->getL10NFactory();
		});

		$this->registerService('OCP\\ILogger', function ($c) {
			return $this->getServer()->getLogger();
		});

		$this->registerService('OCP\\BackgroundJob\\IJobList', function ($c) {
			return $this->getServer()->getJobList();
		});

		$this->registerAlias('OCP\\AppFramework\\Utility\\IControllerMethodReflector', 'OC\AppFramework\Utility\ControllerMethodReflector');
		$this->registerAlias('ControllerMethodReflector', 'OCP\\AppFramework\\Utility\\IControllerMethodReflector');

		$this->registerService('OCP\\Files\\IMimeTypeDetector', function ($c) {
			return $this->getServer()->getMimeTypeDetector();
		});

		$this->registerService('OCP\\Mail\\IMailer', function () {
			return $this->getServer()->getMailer();
		});

		$this->registerService('OCP\\INavigationManager', function ($c) {
			return $this->getServer()->getNavigationManager();
		});

		$this->registerService('OCP\\Notification\IManager', function ($c) {
			return $this->getServer()->getNotificationManager();
		});

		$this->registerService('OCP\\IPreview', function ($c) {
			return $this->getServer()->getPreviewManager();
		});

		$this->registerService('OCP\\IRequest', function () {
			return $this->getServer()->getRequest();
		});
		$this->registerAlias('Request', 'OCP\\IRequest');

		$this->registerService('OCP\\ITagManager', function ($c) {
			return $this->getServer()->getTagManager();
		});

		$this->registerService('OCP\\ITempManager', function ($c) {
			return $this->getServer()->getTempManager();
		});

		$this->registerAlias('OCP\\AppFramework\\Utility\\ITimeFactory', 'OC\AppFramework\Utility\TimeFactory');
		$this->registerAlias('TimeFactory', 'OCP\\AppFramework\\Utility\\ITimeFactory');

		$this->registerService('OCP\\Route\\IRouter', function ($c) {
			return $this->getServer()->getRouter();
		});

		$this->registerService('OCP\\ISearch', function ($c) {
			return $this->getServer()->getSearch();
		});

		$this->registerService('OCP\\ISearch', function ($c) {
			return $this->getServer()->getSearch();
		});

		$this->registerService('OCP\\Security\\ICrypto', function ($c) {
			return $this->getServer()->getCrypto();
		});

		$this->registerService('OCP\\Security\\IHasher', function ($c) {
			return $this->getServer()->getHasher();
		});

		$this->registerService('OCP\\Security\\ICredentialsManager', function ($c) {
			return $this->getServer()->getCredentialsManager();
		});

		$this->registerService('OCP\\Security\\ISecureRandom', function ($c) {
			return $this->getServer()->getSecureRandom();
		});

		$this->registerService('OCP\\Share\\IManager', function ($c) {
			return $this->getServer()->getShareManager();
		});

		$this->registerService('OCP\\SystemTag\\ISystemTagManager', function () {
			return $this->getServer()->getSystemTagManager();
		});

		$this->registerService('OCP\\SystemTag\\ISystemTagObjectMapper', function () {
			return $this->getServer()->getSystemTagObjectMapper();
		});

		$this->registerService('OCP\\IURLGenerator', function ($c) {
			return $this->getServer()->getURLGenerator();
		});

		$this->registerService('OCP\\IUserManager', function ($c) {
			return $this->getServer()->getUserManager();
		});

		$this->registerService('OCP\\IUserSession', function ($c) {
			return $this->getServer()->getUserSession();
		});

		$this->registerService('OCP\\ISession', function ($c) {
			return $this->getServer()->getSession();
		});

		$this->registerService('OCP\\Security\\IContentSecurityPolicyManager', function ($c) {
			return $this->getServer()->getContentSecurityPolicyManager();
		});

		$this->registerService('ServerContainer', function ($c) {
			return $this->getServer();
		});
		$this->registerAlias('OCP\\IServerContainer', 'ServerContainer');
		$this->registerAlias(IServiceLoader::class, 'ServerContainer');

		$this->registerService('Symfony\Component\EventDispatcher\EventDispatcherInterface', function ($c) {
			return $this->getServer()->getEventDispatcher();
		});

		$this->registerService('OCP\\AppFramework\\IAppContainer', function ($c) {
			return $c;
		});

		$this->registerService(IDateTimeFormatter::class, function () {
			return $this->getServer()->getDateTimeFormatter();
		});
		$this->registerService(IMountManager::class, function () {
			return $this->getServer()->getMountManager();
		});

		// commonly used attributes
		$this->registerService('UserId', function ($c) {
			return $c->query('OCP\\IUserSession')->getSession()->get('user_id');
		});

		$this->registerService('WebRoot', function ($c) {
			return $c->query('ServerContainer')->getWebRoot();
		});

		/**
		 * App Framework APIs
		 */
		$this->registerService('API', function ($c) {
			$c->query('OCP\\ILogger')->debug(
				'Accessing the API class is deprecated! Use the appropriate ' .
				'services instead!'
			);
			return new API($c['AppName']);
		});

		$this->registerService('Protocol', function ($c) {
			/** @var \OC\Server $server */
			$server = $c->query('ServerContainer');
			$protocol = $server->getRequest()->getHttpProtocol();
			return new Http($_SERVER, $protocol);
		});

		$this->registerService('Dispatcher', function ($c) {
			return new Dispatcher(
				$c['Protocol'],
				$c['MiddlewareDispatcher'],
				$c['ControllerMethodReflector'],
				$c['Request']
			);
		});

		$this->registerService('OCP\Theme\IThemeService', function ($c) {
			return $this->getServer()->getThemeService();
		});

		/**
		 * Middleware
		 */
		$app = $this;
		$this->registerService('SecurityMiddleware', function ($c) use ($app) {
			return new SecurityMiddleware(
				$c['Request'],
				$c['ControllerMethodReflector'],
				$app->getServer()->getNavigationManager(),
				$app->getServer()->getURLGenerator(),
				$app->getServer()->getLogger(),
				$app->getServer()->getUserSession(),
				$c['AppName'],
				$app->isAdminUser(),
				$app->getServer()->getContentSecurityPolicyManager()
			);
		});

		$this->registerService('CORSMiddleware', function ($c) {
			return new CORSMiddleware(
				$c['Request'],
				$c['ControllerMethodReflector'],
				$c['OCP\IUserSession'],
				$c['OCP\IConfig']
			);
		});

		$this->registerService('SessionMiddleware', function ($c) use ($app) {
			return new SessionMiddleware(
				$c['Request'],
				$c['ControllerMethodReflector'],
				$app->getServer()->getSession()
			);
		});

		$this->registerService('TwoFactorMiddleware', function (SimpleContainer $c) use ($app) {
			$twoFactorManager = $c->getServer()->getTwoFactorAuthManager();
			$userSession = $app->getServer()->getUserSession();
			$urlGenerator = $app->getServer()->getURLGenerator();
			$reflector = $c['ControllerMethodReflector'];
			$request = $app->getServer()->getRequest();
			return new TwoFactorMiddleware($twoFactorManager, $userSession, $urlGenerator, $reflector, $request);
		});

		$middleWares = &$this->middleWares;
		$this->registerService('MiddlewareDispatcher', function ($c) use (&$middleWares) {
			$dispatcher = new MiddlewareDispatcher();
			$dispatcher->registerMiddleware($c['CORSMiddleware']);
			$dispatcher->registerMiddleware($c['SecurityMiddleware']);
			$dispatcher->registerMiddleware($c['TwoFactorMiddleware']);
			$dispatcher->registerMiddleware($c->query(AccountModuleMiddleware::class));

			foreach ($middleWares as $middleWare) {
				$dispatcher->registerMiddleware($c[$middleWare]);
			}

			$dispatcher->registerMiddleware($c['SessionMiddleware']);
			return $dispatcher;
		});
	}

	/**
	 * @deprecated implements only deprecated methods
	 * @return IApi
	 */
	public function getCoreApi() {
		return $this->query('API');
	}

	/**
	 * @return \OCP\IServerContainer
	 */
	public function getServer() {
		return OC::$server;
	}

	/**
	 * @param string $middleWare
	 * @return boolean|null
	 */
	public function registerMiddleWare($middleWare) {
		\array_push($this->middleWares, $middleWare);
	}

	/**
	 * used to return the appname of the set application
	 * @return string the name of your application
	 */
	public function getAppName() {
		return $this->query('AppName');
	}

	/**
	 * @deprecated use IUserSession->isLoggedIn()
	 * @return boolean
	 */
	public function isLoggedIn() {
		return $this->getServer()->getUserSession()->isLoggedIn();
	}

	/**
	 * @deprecated use IGroupManager->isAdmin($userId)
	 * @return boolean
	 */
	public function isAdminUser() {
		$uid = $this->getUserId();
		return \OC_User::isAdminUser($uid);
	}

	private function getUserId() {
		return $this->getServer()->getSession()->get('user_id');
	}

	/**
	 * @deprecated use the ILogger instead
	 * @param string $message
	 * @param string $level
	 * @return mixed
	 */
	public function log($message, $level) {
		switch ($level) {
			case 'debug':
				$level = \OCP\Util::DEBUG;
				break;
			case 'info':
				$level = \OCP\Util::INFO;
				break;
			case 'warn':
				$level = \OCP\Util::WARN;
				break;
			case 'fatal':
				$level = \OCP\Util::FATAL;
				break;
			default:
				$level = \OCP\Util::ERROR;
				break;
		}
		\OCP\Util::writeLog($this->getAppName(), $message, $level);
	}

	/**
	 * Register a capability
	 *
	 * @param string $serviceName e.g. 'OCA\Files\Capabilities'
	 */
	public function registerCapability($serviceName) {
		$this->query('OC\CapabilitiesManager')->registerCapability(function () use ($serviceName) {
			return $this->query($serviceName);
		});
	}
}
