<?php

  /**
   * ownCloud - App Framework
   *
   * @author Bernhard Posselt
   * @copyright 2012 Bernhard Posselt nukeawhale@gmail.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/>.
   *
   */

  /**
   * Public interface of ownCloud for apps to use.
   * AppFramework\Controller class
   */
  
  namespace OCP\AppFramework;

  use OCP\AppFramework\Http\TemplateResponse;
  use OCP\AppFramework\IAppContainer;
  use OCP\IRequest;

  
  /**

   * Base class to inherit your controllers from

   */

  abstract class Controller {
  
  	/**
  	 * app container for dependency injection
  	 * @var \OCP\AppFramework\IAppContainer
  	 */
  	protected $app;

  
  	/**

  	 * current request
  	 * @var \OCP\IRequest

  	 */
  	protected $request;

  	/**
  	 * constructor of the controller
  	 * @param IAppContainer $app interface to the app
  	 * @param IRequest $request an instance of the request
  	 */
  	public function __construct(IAppContainer $app, IRequest $request){
  		$this->app = $app;
  		$this->request = $request;

  	}
  
  
  	/**
  	 * Lets you access post and get parameters by the index
  	 * @param string $key the key which you want to access in the URL Parameter
  	 *                     placeholder, $_POST or $_GET array.
  	 *                     The priority how they're returned is the following:
  	 *                     1. URL parameters
  	 *                     2. POST parameters
  	 *                     3. GET parameters
  	 * @param mixed $default If the key is not found, this value will be returned
  	 * @return mixed the content of the array
  	 */
  	public function params($key, $default=null){

  		return $this->request->getParam($key, $default);

  	}

  	/**
  	 * Returns all params that were received, be it from the request
  	 * (as GET or POST) or throuh the URL by the route
  	 * @return array the array with all parameters
  	 */
  	public function getParams() {

  		return $this->request->getParams();

  	}

  	/**
  	 * Returns the method of the request
  	 * @return string the method of the request (POST, GET, etc)
  	 */
  	public function method() {

  		return $this->request->getMethod();

  	}

  	/**
  	 * Shortcut for accessing an uploaded file through the $_FILES array
  	 * @param string $key the key that will be taken from the $_FILES array
  	 * @return array the file in the $_FILES element
  	 */
  	public function getUploadedFile($key) {

  		return $this->request->getUploadedFile($key);

  	}

  	/**
  	 * Shortcut for getting env variables
  	 * @param string $key the key that will be taken from the $_ENV array
  	 * @return array the value in the $_ENV element
  	 */
  	public function env($key) {

  		return $this->request->getEnv($key);

  	}

  
  	/**
  	 * Shortcut for getting cookie variables
  	 * @param string $key the key that will be taken from the $_COOKIE array
  	 * @return array the value in the $_COOKIE element
  	 */
  	public function cookie($key) {

  		return $this->request->getCookie($key);
  	}
  
  
  	/**
  	 * Shortcut for rendering a template
  	 * @param string $templateName the name of the template
  	 * @param array $params the template parameters in key => value structure
  	 * @param string $renderAs user renders a full page, blank only your template
  	 *                          admin an entry in the admin settings
  	 * @param array $headers set additional headers in name/value pairs
  	 * @return \OCP\AppFramework\Http\TemplateResponse containing the page
  	 */
  	public function render($templateName, array $params=array(),
  							$renderAs='user', array $headers=array()){
  		$response = new TemplateResponse($this->app->getAppName(), $templateName);
  		$response->setParams($params);
  		$response->renderAs($renderAs);
  
  		foreach($headers as $name => $value){
  			$response->addHeader($name, $value);
  		}
  
  		return $response;

  	}

  }