package server;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;
import java.io.*;
import java.net.*;

import static java.lang.System.out;

public class Server
{
    static Map<String, Integer> files = new HashMap<String, Integer>(); //contains file names and the access level required to open them
    static Map<String, Integer> users = new HashMap<String, Integer>();

    public static void main(String[] args)
    {
        out.println("Starting server...");

        File file = new File("datafile.txt");
        try
        {
            //read datafile.txt into files hashmap
            out.println("Reading datafile.txt");
            Scanner scannerdata = new Scanner(file);

            while (scannerdata.hasNextLine())
            {
                String line = scannerdata.nextLine();
                line.trim();
                String field[] = line.split(":");

                files.put(field[0], Integer.parseInt(field[1]));
            }
            scannerdata.close();
        }
        catch (FileNotFoundException e)
        {
            out.println("datafile.txt not found!");
        }
        ////////debug////////////
        //for (Entry<String, Integer> entry : files.entrySet())
        //{
        //  String key = entry.getKey();
        //  Integer value = entry.getValue();

        //  out.println(key);
        //  out.println(value);
        //}
        //int debugclearance = files.get("nuclearlaunchcodes.txt");
        //out.println(debugclearance);
        ////////debug////////////

        //read userfile.txt into users hashmap
        file = new File("userfile.txt");
        try
        {
            out.println("Reading userfile.txt");
            Scanner scannerusers = new Scanner(file);

            while (scannerusers.hasNextLine())
            {
                String line = scannerusers.nextLine();
                line.trim();
                String field[] = line.split(":");

                users.put(field[0], Integer.parseInt(field[1]));
            }
            scannerusers.close();
        }
        catch (FileNotFoundException e)
        {
            out.println("userfile.txt not found!");
        }
        ////////debug////////////
        //for (Entry<String, Integer> entry : users.entrySet())
        //{
        //  String key = entry.getKey();
        //  Integer value = entry.getValue();

        //  out.println(key);
        //  out.println(value);
        //}
        //int debugclearance = users.get("paul");
        //out.println(debugclearance);
        ////////debug////////////

        //be careful: new code ahead!//

        String clientinput;
        boolean check = false;
        int accesslevel = 0;


        while(true)
        {
            try
            {
                ServerSocket welcomeSocket = new ServerSocket(19000);
                Socket connectionSocket = welcomeSocket.accept();
                BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
                DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());

                while(!check)
                {
                    outToClient.writeBytes("What is your username?");
                    outToClient.writeBytes(" ");
                    clientinput = inFromClient.readLine();
                    String username = clientinput;


                    if(users.get(username) == null)
                    {
                        outToClient.writeBytes("Invalid username");
                    }
                    else
                    {
                        check = true;
                    }

                    //try
                    //{
                    //    accesslevel = users.get(username);
                    //    check = true;
                    //}
                    //catch(NullPointerException e)
                    //{
                    //  outToClient.writeBytes("Incorrect username");
                    //    outToClient.writeBytes("  ");
                    //}
                }

                check = false;

                //debug
                outToClient.writeBytes("It worked!");

//              while(!check)
//              {
//                  try
//                  {
//                      outToClient.writeBytes("");
//                  }
//                  catch(NullPointerException e)
//                  {
//
//                  }
//              }


                //outToClient.writeBytes(clientinput);

            }
            catch(IOException e)
            {
                //out.println("Connection to client lost");
            }


        }
        ///new code

    }
}