/**
 * @authors Adam Brickett (N0309883) and Michael Fleming (N0338124)
 */

import java.io.*;
import java.util.LinkedList;
import java.util.List;
import java.util.StringTokenizer;

public class SimpleServer {

    public static List<LoggedInUsers> loggedInUserList = new LinkedList<LoggedInUsers>();
    public static List<UserDetails> userList = new LinkedList<UserDetails>();
    public static List<Day> Days = new LinkedList<Day>();


    public static void main(String[] args) throws FileNotFoundException, IOException {
        if( args.length != 1 )
        {
           System.out.println("USAGE: SimpleServer <listeningPort>");
           System.exit(0);
        }
        int listeningPort = Integer.parseInt(args[0]);

        /*
         * start the server off...
         */

        //String fileName = "E:\\UNI WORK\\Systems Software\\Coursework\\Second part of Coursework\\List_of_Usernames.txt";
        String fileName = "/Volumes/KINGSTON/UNI WORK/Systems Software/Coursework/Second part of Coursework/List_of_Usernames.txt";//E:\\UNI WORK\\Systems Software\\Coursework\\Second part of Coursework\\List_of_Usernames.txt";
        FileReader fileReader = new FileReader(fileName);
        BufferedReader bufferedReader = new BufferedReader(fileReader);

        String line = null;
        while ((line = bufferedReader.readLine()) != null)
        {
           StringTokenizer tokens  = new StringTokenizer(line,","); //splits it into values wherever
                                                       //there is a comma
           String tempUser = tokens.nextToken().trim();
           String tempPass = tokens.nextToken().trim();
           UserDetails temp = new UserDetails(tempUser, tempPass);
           userList.add(temp);
        }

        //fileName = "E:\\UNI WORK\\Systems Software\\Coursework\\Second part of Coursework\\Days.txt";
        fileName = "/Volumes/KINGSTON/UNI WORK/Systems Software/Coursework/Second part of Coursework/Days_mac.txt";
        fileReader = new FileReader(fileName);
        bufferedReader = new BufferedReader(fileReader);

        line = null;
        while ((line = bufferedReader.readLine()) != null)//splits into lines
        {
           StringTokenizer tokens = new StringTokenizer(line,","); //splits it into values wherever
                                                                   //there is a comma

           String tempFilmName = tokens.nextToken().trim();
           String tempDate = tokens.nextToken().trim();
           String tempFileName = tokens.nextToken().trim();
           Day tempDay = new Day(tempFilmName,tempFileName,tempDate);
           Days.add(tempDay);
        }
        LoadDaysFile();
        Server server = new Server(listeningPort);
        server.start();
}

    private static void SaveUserstoFile() throws IOException
    {
        String fileToWrite = "E:\\UNI WORK\\Systems Software\\Coursework\\Second part of Coursework\\List_of_Usernames.txt";

        FileWriter fileOutput = new FileWriter(fileToWrite);
        PrintWriter printWriter = new PrintWriter(fileOutput,true);

        for(int idx = 0; idx < userList.size(); idx++)
        {
           printWriter.println(userList.get(idx).username +"," + userList.get(idx).password);
        }

    }
    private static void SaveBookingsToFile() throws IOException
    {
        for (int i = 0; i < Days.size(); i++)
        {
            Days.get(i).SaveBookingsToFile();
        }
    }
    private static void LoadDaysFile() throws FileNotFoundException, IOException
    {
        for (int i = 0; i < Days.size(); i++)
        {
            Days.get(i).LoadDaysFile();
        }
    }
    public static boolean RegisterUser(String user, String pass) throws IOException
    {
        for(int idx = 0; idx < userList.size(); idx++)
        {
            if(userList.get(idx).username.equalsIgnoreCase(user))
            {
                return false;
            }
        }
        userList.add(new UserDetails(user, pass));

        SaveUserstoFile();
        return true;
    }
    public static boolean ValidateUser(String user, String pass)
    {
        for(int idx = 0; idx < userList.size(); idx++)
        {
            for(int idx2 = 0; idx2 < loggedInUserList.size(); idx2 ++)
            {
                if (loggedInUserList.get(idx2).User.username.equals(user))
                {
                    return false;
                }
            }
            if(userList.get(idx).username.equals(user))
            {
                if(userList.get(idx).password.equals(pass))
                {
                    return true;
                }
            }
        }
        return false;
    }
    public static String GetAvailableSeats(String Date)
    {
        String Seats = "";
        for (int seatidx = 0; seatidx < Days.size();seatidx++)
        {
            if(Days.get(seatidx).Date.equals(Date))
            {
                Seats = Days.get(seatidx).GetAvailableSeats();
            }
        }
        return Seats;
    }
    public static boolean CSVCheck(final String stringToCheck)
    {
        char[] sample = ", ".toCharArray();
        if (stringToCheck.isEmpty())
        {
            return false;
        }
        for(char c: stringToCheck.toCharArray())
        {
            if((!Character.isDigit(c)) && (Character.valueOf(c)!= sample[0]) && (Character.valueOf(c)!= sample[1]))
            {
                return false;
            }
        }
        return true;
    }
    public static boolean BookSeats(String user, String seatsRequested, String Date) throws IOException
    {
        for (int day = 0; day < Days.size();day++)
        {
            if (Date.equals(Days.get(day).Date))
            {
                if (Days.get(day).BookSeats(user, seatsRequested) == true)
                {
                    return true;
                }
            }
        }
        return false;
    }
    public static int CancelBookings(String user, String seatsToCancel,String Date) throws IOException
    {
        for (int day = 0; day < Days.size();day++)
        {
            if (Date.equals(Days.get(day).Date))
            {
                return Days.get(day).CancelBookings(user, seatsToCancel);
            }
        }
        return 0;

    }
    public static void LogIP(String ip)
    {
        UserDetails temp = new UserDetails("null", "null");
            loggedInUserList.add(new LoggedInUsers(temp,ip));
    }
    public static void LogUser(String user,String ip)
    {
        for(int idx = 0; idx < loggedInUserList.size(); idx ++)
        {
            if(loggedInUserList.get(idx).IP.equals(ip))
            {
                for(int idx2 = 0; idx2 < userList.size(); idx2 ++)
                {
                    if(userList.get(idx2).username.equals(user))
                    {
                        loggedInUserList.get(idx).User = userList.get(idx2);
                    }
                }

            }
        }
        System.out.print("User logged in with: " + user + " and IP address " + ip + System.getProperty("line.separator"));
    }
    public static void LogUserOut(String ip)
    {
        UserDetails temp = new UserDetails("null", "null");
        for(int idx = 0; idx < loggedInUserList.size(); idx ++)
        {
            if(loggedInUserList.get(idx).IP.equals(ip))
            {
                loggedInUserList.get(idx).User = temp;
            }
        }
    }
    public static int getFreeSeats(String Date)
    {
        for (int day = 0; day < Days.size();day++)
        {
            if (Date.equals(Days.get(day).Date))
            {
                return Days.get(day).getFreeSeats();
            }
        }
        return 0;
    }
    public static String getFilmName(String Date)
    {
        String temp = "";
        for (int day = 0; day < Days.size();day++)
        {
            if (Date.equals(Days.get(day).Date))
            {
                return Days.get(day).FilmName;
            }
        }
        return temp;
    }
    public static String getFilmTime(String Date)
    {
        String temp = "";
        for (int day = 0; day < Days.size();day++)
        {
            if (Date.equals(Days.get(day).Date))
            {
                return Days.get(day).getShowingTime();
            }
        }
        return temp;
    }
}