package net.minecraft.client.renderer.entity.layers;

import com.mojang.blaze3d.vertex.PoseStack;
import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
import java.io.IOException;
import java.util.Optional;
import java.util.function.UnaryOperator;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.Util;
import net.minecraft.client.model.EntityModel;
import net.minecraft.client.model.VillagerLikeModel;
import net.minecraft.client.renderer.MultiBufferSource;
import net.minecraft.client.renderer.entity.RenderLayerParent;
import net.minecraft.client.renderer.entity.state.LivingEntityRenderState;
import net.minecraft.client.renderer.entity.state.VillagerDataHolderRenderState;
import net.minecraft.client.resources.metadata.animation.VillagerMetadataSection;
import net.minecraft.core.DefaultedRegistry;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.packs.resources.ResourceManager;
import net.minecraft.util.Mth;
import net.minecraft.world.entity.npc.VillagerData;
import net.minecraft.world.entity.npc.VillagerProfession;
import net.minecraft.world.entity.npc.VillagerType;

@Environment(EnvType.CLIENT)
public class VillagerProfessionLayer<S extends LivingEntityRenderState & VillagerDataHolderRenderState, M extends EntityModel<S> & VillagerLikeModel>
	extends RenderLayer<S, M> {
	private static final Int2ObjectMap<ResourceLocation> LEVEL_LOCATIONS = Util.make(new Int2ObjectOpenHashMap<>(), int2ObjectOpenHashMap -> {
		int2ObjectOpenHashMap.put(1, ResourceLocation.withDefaultNamespace("stone"));
		int2ObjectOpenHashMap.put(2, ResourceLocation.withDefaultNamespace("iron"));
		int2ObjectOpenHashMap.put(3, ResourceLocation.withDefaultNamespace("gold"));
		int2ObjectOpenHashMap.put(4, ResourceLocation.withDefaultNamespace("emerald"));
		int2ObjectOpenHashMap.put(5, ResourceLocation.withDefaultNamespace("diamond"));
	});
	private final Object2ObjectMap<VillagerType, VillagerMetadataSection.Hat> typeHatCache = new Object2ObjectOpenHashMap<>();
	private final Object2ObjectMap<VillagerProfession, VillagerMetadataSection.Hat> professionHatCache = new Object2ObjectOpenHashMap<>();
	private final ResourceManager resourceManager;
	private final String path;

	public VillagerProfessionLayer(RenderLayerParent<S, M> renderer, ResourceManager resourceManager, String path) {
		super(renderer);
		this.resourceManager = resourceManager;
		this.path = path;
	}

	public void render(PoseStack poseStack, MultiBufferSource multiBufferSource, int i, S livingEntityRenderState, float f, float g) {
		if (!livingEntityRenderState.isInvisible) {
			VillagerData villagerData = livingEntityRenderState.getVillagerData();
			VillagerType villagerType = villagerData.getType();
			VillagerProfession villagerProfession = villagerData.getProfession();
			VillagerMetadataSection.Hat hat = this.getHatData(this.typeHatCache, "type", BuiltInRegistries.VILLAGER_TYPE, villagerType);
			VillagerMetadataSection.Hat hat2 = this.getHatData(this.professionHatCache, "profession", BuiltInRegistries.VILLAGER_PROFESSION, villagerProfession);
			M entityModel = this.getParentModel();
			entityModel.hatVisible(hat2 == VillagerMetadataSection.Hat.NONE || hat2 == VillagerMetadataSection.Hat.PARTIAL && hat != VillagerMetadataSection.Hat.FULL);
			ResourceLocation resourceLocation = this.getResourceLocation("type", BuiltInRegistries.VILLAGER_TYPE.getKey(villagerType));
			renderColoredCutoutModel(entityModel, resourceLocation, poseStack, multiBufferSource, i, livingEntityRenderState, -1);
			entityModel.hatVisible(true);
			if (villagerProfession != VillagerProfession.NONE && !livingEntityRenderState.isBaby) {
				ResourceLocation resourceLocation2 = this.getResourceLocation("profession", BuiltInRegistries.VILLAGER_PROFESSION.getKey(villagerProfession));
				renderColoredCutoutModel(entityModel, resourceLocation2, poseStack, multiBufferSource, i, livingEntityRenderState, -1);
				if (villagerProfession != VillagerProfession.NITWIT) {
					ResourceLocation resourceLocation3 = this.getResourceLocation(
						"profession_level", LEVEL_LOCATIONS.get(Mth.clamp(villagerData.getLevel(), 1, LEVEL_LOCATIONS.size()))
					);
					renderColoredCutoutModel(entityModel, resourceLocation3, poseStack, multiBufferSource, i, livingEntityRenderState, -1);
				}
			}
		}
	}

	private ResourceLocation getResourceLocation(String folder, ResourceLocation location) {
		return location.withPath((UnaryOperator<String>)(string2 -> "textures/entity/" + this.path + "/" + folder + "/" + string2 + ".png"));
	}

	public <K> VillagerMetadataSection.Hat getHatData(Object2ObjectMap<K, VillagerMetadataSection.Hat> cache, String folder, DefaultedRegistry<K> registry, K key) {
		return cache.computeIfAbsent(
			key, object2 -> (VillagerMetadataSection.Hat)this.resourceManager.getResource(this.getResourceLocation(folder, registry.getKey(key))).flatMap(resource -> {
				try {
					return resource.metadata().getSection(VillagerMetadataSection.TYPE).map(VillagerMetadataSection::hat);
				} catch (IOException var2) {
					return Optional.empty();
				}
			}).orElse(VillagerMetadataSection.Hat.NONE)
		);
	}
}