/*
 * 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.    
 */

package org.apache.tuscany.sca.binding.websocket.runtime;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.nio.channels.SocketChannel;

import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
import org.apache.websocket.WebSocket;

public class WebsocketServiceInvoker implements Runnable {

    private RuntimeEndpoint wire;
    private Operation operation;
    private WebSocket<SocketChannel> websocket;

    public WebsocketServiceInvoker(RuntimeEndpoint wire, Operation operation, WebSocket<SocketChannel> websocket) {
        this.wire = wire;
        this.operation = operation;
        this.websocket = websocket;
    }

    @Override
    public void run() {
        try {
            String jsonParams = websocket.receiveText();
            Object[] args = JSONUtil.decodeJsonParamsForOperation(jsonParams, operation);
            Object response = wire.invoke(operation, args);
            String jsonResponse = JSONUtil.encodeResponse(response);
            websocket.sendText(jsonResponse);
            websocket.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } catch (InvocationTargetException e) {
            throw new RuntimeException(e);
        }
    }

}