/**
 *
 */
package com.logic;

/**
 * @author Mike Rogers
 *
 */
import java.io.*;
import java.net.*;

class Server
{

    public static void main(String argv[]) throws Exception
    {
          String clientSentence;
          String capitalizedSentence;

          String[] authUsers = {"alice", "ted", "bob"};
          String[] authPassW = {"245"};

          String user = "";
          String pass = "";

          boolean run = true;
          boolean authenticated = false;
          boolean validUser = false;
          boolean validPass = false;


          System.out.println("Server running...");

          while(run == true)
          {
              ServerSocket welcomeSocket = new ServerSocket(6789);
              Socket connectionSocket = welcomeSocket.accept();
              BufferedReader inFromClient = new BufferedReader(new
              InputStreamReader(connectionSocket.getInputStream()));

              DataOutputStream  outToClient =
              new DataOutputStream(connectionSocket.getOutputStream());

              while(authenticated == false)
              {
                  clientSentence = inFromClient.readLine();
                  outToClient.writeBytes("Please enter a valid username: " + '\n');
                  user = inFromClient.readLine();

                  for(int i = 0; i < authUsers[i].length(); i++)
                      if(user.equalsIgnoreCase(authUsers[i]))
                          validUser = true;

                  outToClient.writeBytes("Please enter a valid password: " + '\n');
                  pass = inFromClient.readLine();

                  for(int i = 0; i < authPassW[i].length(); i++)
                      if(pass.equalsIgnoreCase(authPassW[i]))
                          validPass = true;

                  if(validUser == true && validPass == true)
                  {
                      outToClient.writeBytes("authenticated" + '\n');
                      authenticated = true;
                  }
              }

              clientSentence = inFromClient.readLine();
              capitalizedSentence = clientSentence.toUpperCase() + '\n';
              outToClient.writeBytes(capitalizedSentence);

              if(capitalizedSentence.equals("QUIT"))
              {
                  run = false;
                  connectionSocket.close();
              }
          }
     }
}