package me.km.events;

import java.util.HashMap;
import java.util.LinkedList;
import me.hammerle.snuviscript.code.Script;
import me.km.DamageUtils;
import me.km.playerbank.PlayerManager;
import me.km.scheduler.SnuviScheduler;
import me.km.utils.ReflectionUtils;
import net.minecraft.entity.LivingEntity;
import net.minecraft.entity.SharedMonsterAttributes;
import net.minecraft.server.MinecraftServer;
import net.minecraft.util.CombatRules;
import net.minecraft.util.DamageSource;
import net.minecraftforge.event.entity.living.LivingHurtEvent;
import net.minecraftforge.eventbus.api.EventPriority;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.gameevent.TickEvent;

public class CustomEventCaller 
{
    private final HashMap<Integer, PlayerMoveData> moveData = new HashMap<>();
    
    private final LinkedList<Integer> removeQueue = new LinkedList<>();
    private final LinkedList<PlayerMoveData> addQueue = new LinkedList<>();
    
    private final PlayerManager pManager;
    private final MinecraftServer server;
    private final SnuviScheduler scheduler;
    
    public CustomEventCaller(PlayerManager pManager, MinecraftServer server, SnuviScheduler scheduler)
    {
        this.pManager = pManager;
        this.server = server;
        this.scheduler = scheduler;
    }

    public int registerMoveData(PlayerMoveData data)
    {
        addQueue.add(data);
        return data.getId();
    }
    
    public void removeScriptData(Script sc)
    {
        moveData.entrySet().forEach(e -> 
        {
            if(e.getValue().isSameScript(sc))
            {
                removeQueue.add(e.getValue().getId());
            }
        });
    }
    
    public void removeMoveData(int id)
    {
        removeQueue.add(id);
    }
    
    @SubscribeEvent
    public void onServerTick(TickEvent.ServerTickEvent e)
    {      
        if(e.phase == TickEvent.Phase.END)
        {
            scheduler.tick();
            if(!addQueue.isEmpty())
            {
                addQueue.forEach(data -> moveData.put(data.getId(), data));
                addQueue.clear();
            }
            moveData.values().removeIf(data -> 
            {
                if(data.tickLiving())
                {
                    return true;
                }
                if(data.tick())
                {
                    return false;
                }
                return server.getPlayerList().getPlayers().stream().anyMatch(p -> data.check(p));
            });
            if(!removeQueue.isEmpty())
            {
                removeQueue.forEach(i -> moveData.remove(i));
                removeQueue.clear();
            }
        }
    } 
    
    private float getRealDamage(float damageAmount, DamageSource ds, LivingEntity liv)
    {
        if(ds != DamageSource.LAVA && ds != DamageSource.IN_WALL && ds != DamageSource.CRAMMING && ds != DamageSource.DROWN)
        {
            if(ds.isMagicDamage() && !ds.isDamageAbsolute()) // Magic Damage
            {
                ReflectionUtils.damageArmor(liv, damageAmount);
                int armor = DamageUtils.getMagicDefense(liv);
                damageAmount = CombatRules.getDamageAfterAbsorb(damageAmount, armor, 0);
            }
            else if(!ds.isUnblockable())
            {
                ReflectionUtils.damageArmor(liv, damageAmount);
                int armor = liv.getTotalArmorValue();
                damageAmount = CombatRules.getDamageAfterAbsorb(damageAmount, armor, (float) liv.getAttribute(SharedMonsterAttributes.ARMOR_TOUGHNESS).getValue());
            }           
            damageAmount = ReflectionUtils.applyPotionDamageCalculations(liv, ds, damageAmount);
        }
        else
        {
            damageAmount = liv.getMaxHealth() / 10;
        }
        return damageAmount;
    }
    
    @SubscribeEvent(priority = EventPriority.LOWEST)
    public void newDamageSystem(LivingHurtEvent e)
    {         
        // ---------------------------------------------------------------------
        // injection of new damage system
        // ---------------------------------------------------------------------
        if(!e.isCanceled())
        {
            e.setCanceled(true);

            DamageSource ds = e.getSource();
            LivingEntity liv = e.getEntityLiving();

            float damageAmount = getRealDamage(e.getAmount(), ds, liv);
            float f = damageAmount;
            damageAmount = Math.max(damageAmount - liv.getAbsorptionAmount(), 0.0f);
            liv.setAbsorptionAmount(liv.getAbsorptionAmount() - (f - damageAmount));

            if(damageAmount != 0.0f)
            {
                float f1 = liv.getHealth();
                liv.setHealth(f1 - damageAmount);
                liv.getCombatTracker().trackDamage(ds, f1, damageAmount);
                liv.setAbsorptionAmount(liv.getAbsorptionAmount() - damageAmount);
            }
        }
    }
}