package net.sourceforge.pain.tinylib.logic.event.console;



import net.sourceforge.pain.tinylib.*;
import net.sourceforge.pain.tinylib.data.*;
import net.sourceforge.pain.tinylib.data.type.*;
import net.sourceforge.pain.tinylib.logic.affect.*;
import net.sourceforge.pain.tinylib.logic.fn.*;
import net.sourceforge.pain.tinylib.logic.fn.util.*;
import net.sourceforge.pain.util.*;


public final class LoginShell extends CommandHandler {

    public static final int INIT = 1;
    public static final int WAIT_LOGIN = 2;
    public static final int WAIT_PASS = 3;

    private int state = INIT;

    private String login = null;
    private int attempts = 0;

    public void run(Console console) throws Exception {
        this.console = console;
        processCommand();
    }

    public void processCommand() throws Exception {
        String line = console.popInputLine();
        if (line != null) {
            line = line.trim();
        }
        Log.debug("LOGIN:line:'" + line + "'");
        switch (state) {
            case INIT:
                console.setRawMode(this);
                LogoFn.showLogo(console);
                askLogin();
                break;
            case WAIT_LOGIN:
                processLogin(line);
                break;
            case WAIT_PASS:
                processPass(line);
                break;
            default :
                throw new RuntimeException("[LOGIN]unknown state:" + state);
        }
    }


    private void processLogin(String line) throws Exception {
        if (line.length() == 0) {
            askLogin();
        } else {
            if (line.length() < 3) {
                MessageOutFn.outln(console, "\n the name you entered is too short: " + line);
                askLogin();
                return;
            }
            login = line;
            Player player = GlobalFindFn.findPlayerByName(login);
            // player login is also is player name, saved in name format with  first letter in uppercase
            if (player != null) {
                login = Utils.formatName(login);
                askPassword();
            } else {
                if (checkNewbiesBan()) {
                    return;//disconnected
                } else {
                    RegistrationShell regEvent = new RegistrationShell(login, console);
                    regEvent.processCommand();
                }
            }

        }
    }

    private boolean checkNewbiesBan() {
        BanRegistry br = Mudlib.getWorld().getBanRegistry();
        SiteBan ban = br.getSiteBan(console.getRemoteAddr(), BanRegistry.SITE_BAN_NEWBIES);
        if (ban != null) {
            MessageOutFn.outln(console, "New players are not allowed from your site.");
            ConsoleFn.forceDisconnect(console);
            return true;
        }
        return false;
    }

    private void askLogin() {
        MessageOutFn.out(console, "\nEnter login:");
        login = null;
        attempts = 0;
        state = WAIT_LOGIN;
    }

    private void askPassword() {
        MessageOutFn.out(console, "Enter password:");
        state = WAIT_PASS;
    }

    private void processPass(String line) throws Exception {
        if (line == null || line.length() == 0) {
            askLogin();
            return;
        }
        final Player player = GlobalFindFn.findPlayerByName(login);
        if (line.equals(player.getPassword())) {
            loginPlayer(player);
        } else {
            MessageOutFn.out(console, "{rWrong password!{x\n");
            attempts++;
            if (attempts > 2) {
                askLogin();
            } else {
                askPassword();
            }
        }
    }

    private void loginPlayer(Player player) throws Exception {
        if (player.isAffected(AffectType.AFFECT_FROZEN_ACCOUNT)) {
            MessageOutFn.outln(console, "Your account is frozen..");
            ConsoleFn.forceDisconnect(console);
            return;
        }
        // Console is an only object from outer world that had a direct link to Player entry -> we should manually look for it validity
        // such ref about object removal from other place

        Console oldConsole = ConsoleFn.getConsole(player);
        if (oldConsole != null) {
            ConsoleFn.logoutUser(oldConsole);
        }
        ConsoleFn.loginUser(console, player);
    }


}