package myWhats;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Writer;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

//Servidor do servi�o myWhatsServer

public class myWhatsServer{

	public static void main(String[] args) {
		System.out.println("servidor: main");
		myWhatsServer server = new myWhatsServer();
		server.startServer();
	}

	public void startServer (){
		ServerSocket sSoc = null;

		try {
			sSoc = new ServerSocket(23456);
		} catch (IOException e) {
			System.err.println(e.getMessage());
			System.exit(-1);
		}

		while(true) {
			try {
				Socket inSoc = sSoc.accept(); //listen
				ServerThread newServerThread = new ServerThread(inSoc);
				newServerThread.start(); //inicializaçao da thread
		    }
		    catch (IOException e) {
		    	try {
					sSoc.close();
					break;
				} catch (IOException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
		        e.printStackTrace();
		    }

		}
		//sSoc.close();
	}


	//Threads utilizadas para comunica��o com os clientes
	class ServerThread extends Thread {

		private Socket socket = null;

		ServerThread(Socket inSoc) {
			socket = inSoc;
			System.out.println("thread do server para cada cliente");
		}

		public void run(){
			try {
				ObjectOutputStream outStream = new ObjectOutputStream(socket.getOutputStream());
				ObjectInputStream inStream = new ObjectInputStream(socket.getInputStream());

				String recebido = null;
				String user = null;
				String passwd = null;
				String[] resto =null;
				File log = new File ("passwords.txt");
				String proxima = null;
				Boolean bool = false;




				try {
					recebido = (String) inStream.readObject();
					int it = 0;
					resto = recebido.split(" ");
					user= resto[0];
					passwd= resto[1];
					System.out.println("thread: depois de receber a password e o user");
					if(!log.exists()){
						System.out.println("novo ficheiro de pass");
						log.createNewFile();
					}
					PrintWriter out = new PrintWriter(new FileWriter(log, true));
					Scanner sc = new Scanner (log);
					if(sc.hasNextLine()){
						proxima = sc.next();
						while(proxima != null){
							String[] userPass = proxima.split(":",2);
							if(userPass[0].equals(user)){
								if(userPass[1].equals(passwd)){
									System.out.println("Login Correcto");
									bool=true;
									break;
								}else{
									System.out.println("Password Incorrecta");
									outStream.writeObject(new Boolean(false));
								}
							}
							proxima= sc.nextLine();
						}
					}
					if(!bool){
						out.write(user+":"+ passwd + '\n');
						System.out.println("Novo User Registado");
					}

				}catch (ClassNotFoundException e1) {
					e1.printStackTrace();
				}

				switch (resto[2]){
					case "-m":
						break;
					case "-r":
						break;
					case "-a":
						break;
					case "-d":
						break;
					case "-f":
						break;
					default:
						break;
				}

				//TODO: refazer
				//este c�digo apenas exemplifica a comunica��o entre o cliente e o servidor
				//n�o faz qualquer tipo de autentica��o
				if (user.length() != 0){
					outStream.writeObject(new Boolean(true));
				}
				else {
					outStream.writeObject(new Boolean(false));
				}

				outStream.close();
				inStream.close();

				socket.close();

			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}