/*
 * 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.cloudstack.framework.client;

import java.util.ArrayList;
import java.util.List;

import org.apache.cloudstack.framework.transport.TransportAddress;
import org.apache.cloudstack.framework.transport.TransportAttachResponsePdu;
import org.apache.cloudstack.framework.transport.TransportConnectResponsePdu;
import org.apache.cloudstack.framework.transport.TransportPdu;

public class ClientTransportConnection {
	enum State {
		Idle,
		Connecting,
		Open,
		Closing
	}
	
	private ClientTransportProvider _provider;

	// TODO, use state machine
	private State _state = State.Idle;
	
	private TransportAddress _connectionTpAddress;
	private List<TransportPdu> _outputQueue = new ArrayList<TransportPdu>(); 
	
	public ClientTransportConnection(ClientTransportProvider provider) {
		_provider = provider;
	}
	
	public void connect(String serverAddress, int serverPort) {
		boolean doConnect = false;
		synchronized(this) {
			if(_state == State.Idle) {
				setState(State.Connecting);
				doConnect = true;
			}
		}
		
		if(doConnect) {
			// ???
		}
	}
	
	public void handleConnectResponsePdu(TransportConnectResponsePdu pdu) {
		// TODO assume it is always succeeds
		_connectionTpAddress = TransportAddress.fromAddressString(pdu.getDestAddress());
		
		// ???
	}
	
	public void handleAttachResponsePdu(TransportAttachResponsePdu pdu) {
		// ???
	}
	
	private void setState(State state) {
		synchronized(this) {
			if(_state != state) {
				_state = state;
			}
		}
	}
}
