package com.falanor;

import net.minecraft.server.v1_12_R1.EntityHuman;
import net.minecraft.server.v1_12_R1.MobEffects;
import org.bukkit.attribute.Attribute;
import org.bukkit.attribute.AttributeModifier;
import org.bukkit.craftbukkit.v1_12_R1.entity.CraftPlayer;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin implements Listener
{

    public void onEnable()
    {
        this.getServer().getPluginManager().registerEvents(this,this);
    }

    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent e)
    {
        Player p = e.getPlayer();

        p.setMaximumNoDamageTicks(17);
        p.getAttribute(Attribute.GENERIC_ATTACK_SPEED).addModifier(new AttributeModifier("generic.attackSpeed", 9.9999999E7D, AttributeModifier.Operation.ADD_NUMBER));
    }

    @EventHandler
    public void quit(PlayerQuitEvent e){

        final Player p = e.getPlayer();
        for(AttributeModifier a : p.getAttribute(Attribute.GENERIC_ATTACK_SPEED).getModifiers())
        {
            if(a.getName().equals("generic.attackSpeed"))
            {
                p.getAttribute(Attribute.GENERIC_ATTACK_SPEED).removeModifier(a);

            }
        }
    }

    private boolean isCritical(Player p)
    {
        EntityHuman eh = ((CraftPlayer) p).getHandle();
        return eh.fallDistance > 0.0F && !eh.onGround && !eh.m_() && !eh.isInWater() && !eh.hasEffect(MobEffects.BLINDNESS) && !eh.isPassenger() && !eh.isSprinting();
    }

    @EventHandler(priority = EventPriority.NORMAL)
    public void onEntityDamageByEntityEvent(EntityDamageByEntityEvent e){
        if(!e.isCancelled())
        {
            if (e.getEntity() instanceof Player && e.getDamager() instanceof Player)
            {
                Player hurtPlayer = (Player) e.getEntity();
                Player damager = (Player) e.getDamager();

                boolean blocking = false;

                if (hurtPlayer.isBlocking())
                {
                    blocking = true;
                }

                if (isCritical(damager) && !blocking)
                {
                    double damage = e.getDamage();
                    double d = damage / 3d;
                    e.setDamage(d * 2d + (d * .25d));
                    hurtPlayer.setVelocity(damager.getLocation().getDirection().multiply(0.265));
                } else if (!hurtPlayer.isOnGround())
                {
                    hurtPlayer.setVelocity(damager.getLocation().getDirection().multiply(0.245).setY(0.1));
                } else
                {
                    hurtPlayer.setVelocity(damager.getLocation().getDirection().multiply(0.19));
                }
            }
        }
    }

}