/* 
    This file is a part of the SteamWar software.
    
    Copyright (C) 2020  SteamWar.de-Serverteam

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

package de.steamwar.fightsystem.winconditions;

import de.steamwar.fightsystem.Config;
import de.steamwar.fightsystem.FightSystem;
import de.steamwar.fightsystem.countdown.TechKOCountdown;
import de.steamwar.fightsystem.fight.Fight;
import de.steamwar.fightsystem.fight.FightTeam;
import de.steamwar.fightsystem.states.FightState;
import org.bukkit.Bukkit;
import org.bukkit.World;
import org.bukkit.entity.TNTPrimed;
import org.bukkit.event.EventHandler;
import org.bukkit.event.entity.EntityExplodeEvent;
import org.bukkit.scheduler.BukkitTask;

import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;

public class WinconditionTechKO extends ListenerWincondition {

    private static final int TECH_KO_TIME_IN_S = 90;
    private static final int TECH_KO_HALF_TIME = TECH_KO_TIME_IN_S*10;
    public static final int TECH_KO_COUNTDOWN_TIME = TECH_KO_HALF_TIME/20;

    private World world = Bukkit.getWorlds().get(0);
    private Map<Integer, Boolean> map = new HashMap<>(400);
    private double toggle = Config.SpecSpawn.getZ();
    private int smallerZtime = TECH_KO_HALF_TIME;
    private int biggerZtime = TECH_KO_HALF_TIME;
    private TechKOCountdown smallerZcountdown = null;
    private TechKOCountdown biggerZcountdown = null;
    private BukkitTask task;
    private boolean running = false;

    /**
     * Works only for z-Axis fight direction for performance reasons
     */
    public WinconditionTechKO(){
        super(Config.TechKO, EnumSet.of(FightState.RUNNING));
    }

    @Override
    public void enable() {
        super.enable();
        task = Bukkit.getScheduler().runTaskTimerAsynchronously(FightSystem.getPlugin(), this::run, 1, 1);
    }

    @Override
    public void disable() {
        super.disable();
        smallerZcountdown.disable();
        biggerZcountdown.disable();
        task.cancel();
    }

    @EventHandler
    public void onEntityDead(EntityExplodeEvent event){
        map.remove(event.getEntity().getEntityId());
    }

    private void run(){
        if(running)
            return;
        running = true;

        for(TNTPrimed tnt : world.getEntitiesByClass(TNTPrimed.class)){
            int id = tnt.getEntityId();
            boolean smallerZ = tnt.getLocation().getZ() < toggle;
            Boolean old = map.put(id, smallerZ);
            if(old != null && old != smallerZ){
                if(old)
                    smallerZtime = TECH_KO_HALF_TIME;
                else
                    biggerZtime = TECH_KO_HALF_TIME;
            }
        }

        if(smallerZtime == TECH_KO_HALF_TIME && smallerZcountdown != null){
            smallerZcountdown.disable();
            smallerZcountdown = null;
        }else if(smallerZtime == 0){
            smallerZcountdown = new TechKOCountdown(smallerTeam());
        }

        if(biggerZtime == TECH_KO_HALF_TIME && biggerZcountdown != null){
            biggerZcountdown.disable();
            biggerZcountdown = null;
        }else if(biggerZtime == 0){
            biggerZcountdown = new TechKOCountdown(biggerTeam());
        }

        smallerZtime--;
        biggerZtime--;
        running = false;
    }

    private FightTeam smallerTeam(){
        if(Config.TeamBluetoReddistanceZ > 0)
            return Fight.getBlueTeam();
        else
            return Fight.getRedTeam();
    }

    private FightTeam biggerTeam(){
        if(Config.TeamBluetoReddistanceZ < 0)
            return Fight.getBlueTeam();
        else
            return Fight.getRedTeam();
    }
}