package org.apache.turbine.services.jsonrpc;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import java.io.CharArrayWriter;

 import javax.servlet.http.HttpServletRequest;

 import org.apache.logging.log4j.LogManager;

 import org.apache.logging.log4j.Logger;

 import org.jabsorb.JSONRPCBridge;

 import org.jabsorb.JSONRPCResult;

 import org.json.JSONArray;

 import org.json.JSONException;

 import org.json.JSONObject;

 /**

  * Process a JSON RPC call

  *

  * @author <a href="mailto:seade@backstagetech.com.au">Scott Eade</a>

  */

 public class JSONProcessor

 {

     /** Log. */

     private static Logger log = LogManager.getLogger(JSONProcessor.class);

     /**

      * Process a JSON RPC call

      * @param cdata the JSON data

      * @param json_bridge the {@link JSONRPCBridge} object

      * @param request the request

      * @return the return object of the JSON RPC call

      */

     public static Object processCall(CharArrayWriter cdata, JSONRPCBridge json_bridge, HttpServletRequest request)

     {

         // Process the request

         JSONObject json_req = null;

         Object json_res = null;

         try

         {

             json_req = new JSONObject(cdata.toString());

             if (log.isDebugEnabled())

             {

                 String methodName = json_req.getString("method");

                 JSONArray arguments = json_req.getJSONArray("params");

                 // If this a CallableReference it will have a non-zero objectID

                 int object_id = json_req.optInt("objectID");

                 StringBuilder sb = new StringBuilder(".doprocessCall(): call ");

                 if (object_id != 0)

                 {

                     sb.append("objectID=").append(object_id).append(" ");

                 }

                 sb.append(methodName).append("(").append(arguments).append(")");

                 log.debug(sb.toString());

             }

             //json_res = json_bridge.call(new Object[] {request}, object_id, methodName, arguments);

             json_res = json_bridge.call(new Object[] {request}, json_req);

         }

         catch (JSONException e)

         {

             log.error(".processCall(): can't parse call: {}", cdata, e);

             json_res = JSONRPCResult.MSG_ERR_PARSE;

         }

         // Write the response

         log.debug(".processCall():  returns ", json_res::toString);

         return json_res;

     }

 }