package vooga.engine.networking.client;

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

import vooga.engine.networking.GameSocket;
import vooga.engine.networking.server.VoogaServer;

/**
 * Basic class for connecting to the server from the client and sending and receiving data. Works for basic games but can be extended to add more complicated
 * functionality.  Override the getData() method to deal with receiving messages from the socket and the sendData() method for sending messages to the socket.
 * 
 * @author Cue, Kolodziejzyk, Townsend
 * @version 1.0
 */
public class ClientConnection extends GameSocket{
	
	/**
	 * Calls GameSocket constructor with the server's IP address and the port.  The port is based on the name of the game since each game has a different port
	 * that it operates on.
	 * 
	 * @param name the name of the game you're trying to connect to and from
	 * @author Cue, Kolodziejzyk, Townsend
	 * @version 1.0
	 */
	public ClientConnection(String name) throws UnknownHostException, IOException{
		super(new Socket("localhost", VoogaServer.getGamePort(name)));
	}

	/**
	 * Listen for incoming data for the game. If the data is null then return gameOver otherwise just return the data String.
	 * 
	 * @return data that was sent over the network
	 * @author Cue, Kolodziejzyk, Townsend
	 * @version 1.0
	 */
	public String getData() {
		if (!isConnected()) 
			throw new NullPointerException("Attempted to read closed socket!");

		try {
			String sentData = receive();
			if (sentData == null)
				return "gameOver";
			sentData = sentData.trim();
			return sentData;
		}
		catch (IOException e) {
			System.out.println("I/O Error: " + e);
			System.exit(1);
			return null;
		}
	}
	
	/**
	 * Send a Serializeable object over the network.  Calls the Serializeable object's serialize method to convert
	 * it to a String to send to the socket.
	 * 
	 * @param data the Serializeable object sent over the network
	 * @author Cue, Kolodziejzyk, Townsend
	 * @version 1.0
	 */
	public void sendData(Serializeable data){
		send(data.serialize());
	}

	
	/**
	 * Tell the server that the game is over.
	 * 
	 * @author Cue, Kolodziejzyk, Townsend
	 * @version 1.0
	 */
	public void sendGameOver(){
		send("gameOver");
	}
}