<?php
  
  /**
   * ownCloud - App Framework
   *
   * @author Bernhard Posselt

   * @copyright 2012 Bernhard Posselt <dev@bernhard-posselt.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/>.
   *
   */
  
  
  namespace OC\AppFramework;
  
  use OC\AppFramework\DependencyInjection\DIContainer;

  
  
  /**
   * Entry point for every request in your app. You can consider this as your
   * public static void main() method
   *
   * Handles all the dependency injection, controllers and output flow
   */
  class App {
  
  
  	/**
  	 * Shortcut for calling a controller method and printing the result
  	 * @param string $controllerName the name of the controller under which it is
  	 *                               stored in the DI container
  	 * @param string $methodName the method that you want to call
  	 * @param DIContainer $container an instance of a pimple container.
  	 * @param array $urlParams list of URL parameters (optional)
  	 */
  	public static function main($controllerName, $methodName, DIContainer $container, array $urlParams = null) {
  		if (!is_null($urlParams)) {
  			$container['urlParams'] = $urlParams;
  		}
  		$controller = $container[$controllerName];
  
  		// initialize the dispatcher and run all the middleware before the controller
  		$dispatcher = $container['Dispatcher'];
  
  		list($httpHeaders, $responseHeaders, $output) =
  			$dispatcher->dispatch($controller, $methodName);
  
  		if(!is_null($httpHeaders)) {
  			header($httpHeaders);
  		}
  
  		foreach($responseHeaders as $name => $value) {
  			header($name . ': ' . $value);
  		}
  
  		if(!is_null($output)) {
  			header('Content-Length: ' . strlen($output));
  			print($output);
  		}
  
  	}
  
  	/**
  	 * Shortcut for calling a controller method and printing the result.
  	 * Similar to App:main except that no headers will be sent.
  	 * This should be used for example when registering sections via
  	 * \OC\AppFramework\Core\API::registerAdmin()
  	 *
  	 * @param string $controllerName the name of the controller under which it is
  	 *                               stored in the DI container
  	 * @param string $methodName the method that you want to call
  	 * @param array $urlParams an array with variables extracted from the routes
  	 * @param DIContainer $container an instance of a pimple container.
  	 */
  	public static function part($controllerName, $methodName, array $urlParams,
  								DIContainer $container){
  
  		$container['urlParams'] = $urlParams;
  		$controller = $container[$controllerName];
  
  		$dispatcher = $container['Dispatcher'];
  
  		list(, , $output) =  $dispatcher->dispatch($controller, $methodName);
  		return $output;
  	}
  
  }