Basic structure and functionality of api class

lib/api.php

@@ -0,0 +1,91 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Tom Needham
+ * @author Michael Gapczynski
+ * @author Bart Visscher
+ * @copyright 2012 Tom Needham tom@owncloud.com
+ * @copyright 2012 Michael Gapczynski mtgap@owncloud.com
+ * @copyright 2012 Bart Visscher bartv@thisnet.nl
+ *
+ * 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/>.
+ *
+ */
+ 
+ class OC_API {
+	 
+	 /**
+	  * api actions
+	  */
+	 protected $actions = array();
+	 
+	 /**
+	  * registers an api call
+	  * @param string $method the http method
+	  * @param string $url the url to match
+	  * @param callable $action the function to run
+	  */
+	 public function register($method, $url, $action){
+	 	$name = strtolower($method).$url;
+	 	if(!isset(self::$actions[$name])){
+		 	OC_Router::create($name, $url)
+		 		->action('OC_API', 'call');
+		 	self::$actions[$name] = array();
+	 	}
+	 	self::$actions[$name][] = $action;
+	 }
+	 
+	 /**
+	  * handles an api call
+	  * @param array $parameters
+	  */
+	 public function call($parameters){
+	 	// TODO load the routes.php from apps
+		 $name = $parameters['_name'];
+		 $response = array();
+		 // Loop through registered actions
+		 foreach(self::$actions[$name] as $action){
+		 	if(is_callable($action)){
+		 		$action_response = call_user_func($action, $parameters);
+		 		if(is_array($action_response)){
+		 			// Merge with previous
+			 		$response = array_merge($response, $action_response);
+		 		} else {
+			 		// TODO - Something failed, do we return an error code, depends on other action responses
+		 		}
+		 	} else {
+			 	// Action not callable
+			 	// log
+			 	// TODO - Depending on other action responses, do we return a 501?
+		 	}
+		 }
+		 // Send the response
+		 if(isset($parameters['_format'])){
+			 self::respond($response, $parameters['_format']);
+		 } else {
+			 self::respond($response);
+		 }
+	 }
+	 
+	 /**
+	  * respond to a call
+	  * @param int|array $response the response
+	  * @param string $format the format xml|json
+	  */
+	 private function respond($response, $format='json'){
+		 // TODO respond in the correct format
+	 }
+	 
+ }