package com.zivilon.cinder_loe.mixins;

import com.zivilon.cinder_loe.entity.Renegade;
import com.zivilon.cinder_loe.potion.LoEPotions;
import com.zivilon.cinder_loe.util.IEntityLivingBase;

import lotr.common.LOTRLevelData;
import lotr.common.LOTRMod;
import lotr.common.entity.ai.LOTREntityAINearestAttackableTargetBasic;
import lotr.common.entity.ai.LOTREntityAINearestAttackableTargetBasic.TargetSorter;
import lotr.common.entity.npc.LOTREntityNPC;
import lotr.common.entity.npc.LOTREntityNPCRideable;

import net.minecraft.command.IEntitySelector;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityCreature;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.ai.EntityAITarget;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;

import org.spongepowered.asm.mixin.*;
import org.spongepowered.asm.mixin.injection.*;
import org.spongepowered.asm.mixin.injection.callback.*;

import java.util.UUID;
import java.util.Collections;
import java.util.List;

@Mixin(LOTREntityAINearestAttackableTargetBasic.class)
public abstract class MixinLOTREntityAINearestAttackableTargetBasic extends EntityAITarget {
    @Shadow
    private final Class targetClass;
    @Shadow
    private EntityLivingBase targetEntity;
    @Shadow
    private final TargetSorter targetSorter;
    @Shadow
    private final IEntitySelector targetSelector;
    @Shadow
    private final int targetChance;

    public MixinLOTREntityAINearestAttackableTargetBasic(EntityCreature p_i1669_1_, boolean p_i1669_2_) {
        super(p_i1669_1_, p_i1669_2_);
        targetClass = null; // Should never get applied because constructors can't be overwritten
        targetEntity = null;
        targetSorter = null;
        targetSelector = null;
        targetChance = 0;
    }

    @Overwrite(remap = true)
    public boolean shouldExecute() {
        EntityCreature self = taskOwner;

        if (!(self instanceof IEntityLivingBase)) return original_should_execute();

        UUID leader_id = ((IEntityLivingBase) self).get_warband_uuid();
        if (leader_id == null) return original_should_execute();

        Entity leader = find_entity_by_uuid(self.worldObj, leader_id);
        if (leader == null) return original_should_execute();

        double distance_squared = self.getDistanceSqToEntity(leader);
        if (distance_squared > 576.0D) {
            self.setAttackTarget(null);
            self.getNavigator().tryMoveToEntityLiving(leader, 1.3D);
            return false;
        }
        return original_should_execute();
    }

    public boolean original_should_execute() {
        if (this.targetChance > 0 && this.taskOwner.getRNG().nextInt(this.targetChance) != 0)
            return false;
        if (this.taskOwner instanceof LOTREntityNPC) {
            LOTREntityNPC npc = (LOTREntityNPC)this.taskOwner;
            if (npc.hiredNPCInfo.isActive && npc.hiredNPCInfo.isHalted())
                return false;
            if (npc.isChild())
                return false;
        }
        if (this.taskOwner instanceof LOTREntityNPCRideable) {
            LOTREntityNPCRideable rideable = (LOTREntityNPCRideable)this.taskOwner;
            if (rideable.isNPCTamed() || rideable.riddenByEntity instanceof EntityPlayer)
                return false;
        }
        double range = getTargetDistance();
        double rangeY = Math.min(range, 8.0D);
        List<?> entities = this.taskOwner.worldObj.selectEntitiesWithinAABB(this.targetClass, this.taskOwner.boundingBox.expand(range, rangeY, range), this.targetSelector);
        List<? extends Entity> entity_list = (List<? extends Entity>)entities;
        Collections.sort(entity_list, this.targetSorter);
        if (entities.isEmpty())
            return false;
        this.targetEntity = (EntityLivingBase)entities.get(0);
        return true;
    }

    private Entity find_entity_by_uuid(World world, UUID uuid) {
        for (Object obj : world.loadedEntityList) {
            if (obj instanceof Entity && uuid.equals(((Entity) obj).getUniqueID())) {
                return (Entity)obj;
            }
        }
        return null;
    }

    /**
    * @author Shinare
    * @reason Added corrupting potion effect that makes all NPCs hostile
    */
    @Overwrite(remap = false)
    protected boolean isPlayerSuitableAlignmentTarget(EntityPlayer entityplayer) {
        float alignment = LOTRLevelData.getData(entityplayer).getAlignment(LOTRMod.getNPCFaction((Entity)this.taskOwner));
        if (entityplayer == null || LoEPotions.corrupting == null) return alignment < 0.0F;
        boolean corrupting = entityplayer.isPotionActive(LoEPotions.corrupting); // Needs to be implemented
        return (alignment < 0.0F || corrupting);
    }
}