package com.tiedup.remake.mixin;

import com.tiedup.remake.compat.mca.MCACompat;
import com.tiedup.remake.v2.bondage.CollarHelper;
import com.tiedup.remake.state.IBondageState;
import com.tiedup.remake.v2.BodyRegionV2;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.Mob;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.ItemStack;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Pseudo;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;

/**
 * Mixin to allow vanilla leash attachment to MCA villagers when tied or collar owner.
 *
 * <p>By default, MCA villagers cannot be leashed. This mixin overrides
 * the canBeLeashed check to allow leashing when:
 * <ul>
 *   <li>The villager is tied up (any bind), OR</li>
 *   <li>The player is a collar owner</li>
 * </ul>
 *
 * <p>Uses @Pseudo annotation - mixin is optional and will be skipped if MCA is not installed.
 */
@Pseudo
@Mixin(targets = "forge.net.mca.entity.VillagerEntityMCA", remap = false)
public class MixinMCAVillagerLeash {

    /**
     * Override canBeLeashed to allow TiedUp leash mechanics.
     *
     * <p>The canBeLeashed method is a vanilla method (remapped), so we use remap = true.
     *
     * @param player The player trying to leash
     * @param cir Callback info for returning the result
     */
    @Inject(
        method = "canBeLeashed",
        at = @At("HEAD"),
        cancellable = true,
        remap = true
    )
    private void tiedup$overrideCanBeLeashed(
        Player player,
        CallbackInfoReturnable<Boolean> cir
    ) {
        LivingEntity entity = (LivingEntity) (Object) this;
        IBondageState state = MCACompat.getKidnappedState(entity);

        // No TiedUp state - let vanilla/MCA handle it
        if (state == null) {
            return;
        }

        // Already leashed - cannot leash again
        if (entity instanceof Mob mob && mob.isLeashed()) {
            cir.setReturnValue(false);
            return;
        }

        // Can be leashed if tied up
        if (state.isTiedUp()) {
            cir.setReturnValue(true);
            return;
        }

        // Can be leashed if player is collar owner
        if (state.hasCollar()) {
            ItemStack collar = state.getEquipment(BodyRegionV2.NECK);
            if (CollarHelper.isCollar(collar)) {
                if (CollarHelper.isOwner(collar, player)) {
                    cir.setReturnValue(true);
                    return;
                }
            }
        }

        // Default: let MCA handle it (usually returns false)
    }
}