package network;
import network.ClientHandler;

import java.util.*;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

import protocol.ProtocolConstants;
import protocol.ProtocolControl;

/**
 * Server.
 * @author  Theo Ruys
 * @version 2005.02.21
 */
public class Server {
	private static final String USAGE = "usage: " + Server.class.getName() + " <port>";

	/** Start een Server-applicatie op. */
	public static void main(String[] args) {
		if (args.length != 1) {
			System.out.println(USAGE);
			System.exit(0);
		}
		Scanner in = new Scanner(System.in);
		System.out.println("Enter portnumber: ");
		String portInput = in.nextLine();

		port = Integer.parseInt(portInput);
		Server server = new Server(port);
		server.run();

	}
	private static int port;
	private List<ClientHandler> inactiveThreads;
	private List<ClientHandler> waitingThreads;
	private List<ClientHandler> matchedPairs;
	// private List<Game> activeGames;
	/** Constructs a new Server object */
	public Server(int port) {
		this.inactiveThreads = new ArrayList<ClientHandler>();
		this.waitingThreads = new ArrayList<ClientHandler>();
		this.matchedPairs = new ArrayList<ClientHandler>();
		//this.activeGames = new ArrayList<Game>();
		//this.start();
	}

	/**
	 * Listens to a port of this Server if there are any Clients that
	 * would like to connect. For every new socket connection a new
	 * ClientHandler thread is started that takes care of the further
	 * communication with the Client.
	 * @param array
	 */
	public void run() {
		int i = 0;
		try {
			ServerSocket ssocket = new ServerSocket(this.port);

			while(true){
				Socket socket = ssocket.accept();
				ClientHandler handler = new ClientHandler(this, socket);
				System.out.println("[Client no. " + (++i) + "]" + "connected.");
				handler.announce();
				handler.start();
				addInactiveHandler(handler);

			}} catch (IOException e){}}

	public void acceptRequest(ClientHandler c){
		c.sendMessage(ProtocolControl.acceptRequest + ProtocolConstants.msgSeperator + c.getClientName());
		if(waitingThreads.get(0).getClientName().equals(c.getClientName())){
			usernameInUse(c);
		} else { inactiveThreads.remove(c);
		waitingThreads.add(c);
		if(waitingThreads.size() == 2){
			moveToPairs(c);
		}
		}
	}
	public void moveToPairs(ClientHandler c){
		if(waitingThreads.size() == 2);
		waitingThreads.remove(c);
		matchedPairs.add(c);
	}
	public void colors(ClientHandler c){
		}


	//Errors m.b.t. verkeerde command
	/*public void invalidUserTurn(ClientHandler c){
		c.sendMessage(ProtocolConstants.invalidCommand + ProtocolConstants.msgSeperator + ProtocolConstants.invalidUserTurn + ProtocolConstants.msgSeperator + c.getClientName());
	}
	public void invalidCommand(ClientHandler c){
		c.sendMessage(ProtocolConstants.invalidCommand + ProtocolConstants.msgSeperator + ProtocolConstants.invalidCommand);
	}*/
	public void usernameInUse(ClientHandler c){
		c.sendMessage(ProtocolConstants.invalidCommand + ProtocolConstants.msgSeperator + ProtocolConstants.usernameInUse);
	}
	/*
	public void invalidMove(ClientHandler c){
		c.sendMessage(ProtocolConstants.invalidCommand + ProtocolConstants.msgSeperator + ProtocolConstants.invalidMove);
	}
	public void invalidUserName(ClientHandler c){
		c.sendMessage(ProtocolConstants.invalidCommand + ProtocolConstants.msgSeperator + ProtocolConstants.invalidUsername);
	}


	/*Endgame constanten
	public void endGameWinner(){
		c.sendMessage("endGame" + ProtocolConstants.msgSeperator + resultString + ProtocolConstants.msgSeperator + "winner");

	}
	public void endGameConnection(){
		c.sendMessage("endGame" + ProtocolConstants.msgSeperator + resultString + ProtocolConstants.msgSeperator + "connectionlost");
	}
	public void endGameDraw(){
		c.sendMessage("endGame" + ProtocolConstants.msgSeperator + resultString + ProtocolConstants.msgSeperator + "draw");
	}
	public void endGameUnknown(){
		c.sendMessage("endGame" + ProtocolConstants.msgSeperator + resultString + ProtocolConstants.msgSeperator + "unknownerror");
	}*/

	/**
	 * Sends a message using the collection of connected ClientHandlers
	 * to all connected Clients.
	 * @param msg message that is send
	 */

	public void broadcast(String msg, ClientHandler c) {
		String[] splitArray = msg.split(ProtocolConstants.msgSeperator);
		if (splitArray[0].equals(ProtocolControl.joinRequest)){
		acceptRequest(c);}}
		/*else { if(splitArray[0].equals(ProtocolControl.getBoard)){
			sendBoard(array);}
		else { if(splitArray[0].equals(ProtocolControl.playerTurn)){
			turn(c.getClientName());}
		else { if(splitArray[0].equals(ProtocolControl.doMove)){
			moveResult(index, c.getClientName(), valid, nextPlayer)){
		}*/

	public void endGame(){
	}



	/**
	 * Add a ClientHandler to the collection of ClientHandlers.
	 * @param handler ClientHandler that will be added
	 */
	public void addInactiveHandler(ClientHandler handler) {
		inactiveThreads.add(handler);
	}

	/**
	 * Remove a ClientHandler from the collection of ClientHanlders.
	 * @param handler ClientHandler that will be removed
	 */
	public void removeInactiveHandler(ClientHandler handler) {
		inactiveThreads.remove(handler);
	}

	public void addWaitingHandler(ClientHandler handler) {
		waitingThreads.add(handler);
	}

	public void removeWaitingHandler(ClientHandler handler) {
		waitingThreads.remove(handler);
	}
	public void removeMatchedPairs(ClientHandler handler) {
		matchedPairs.remove(handler);
	}
	public void addMatchedPairs(ClientHandler handler) {
		matchedPairs.add(handler);
	}
}// end of class Server