package net.minecraft.advancements.critereon;

import com.google.common.collect.ImmutableMap;
import com.mojang.serialization.Codec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.Map;
import java.util.Optional;
import java.util.function.Predicate;
import net.minecraft.core.HolderSet;
import net.minecraft.core.RegistryCodecs;
import net.minecraft.core.component.DataComponentHolder;
import net.minecraft.core.component.DataComponentPredicate;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.core.registries.Registries;
import net.minecraft.tags.TagKey;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.ItemLike;

public record ItemPredicate(
	Optional<HolderSet<Item>> items, MinMaxBounds.Ints count, DataComponentPredicate components, Map<ItemSubPredicate.Type<?>, ItemSubPredicate> subPredicates
) implements Predicate<ItemStack> {
	public static final Codec<ItemPredicate> CODEC = RecordCodecBuilder.create(
		instance -> instance.group(
				RegistryCodecs.homogeneousList(Registries.ITEM).optionalFieldOf("items").forGetter(ItemPredicate::items),
				MinMaxBounds.Ints.CODEC.optionalFieldOf("count", MinMaxBounds.Ints.ANY).forGetter(ItemPredicate::count),
				DataComponentPredicate.CODEC.optionalFieldOf("components", DataComponentPredicate.EMPTY).forGetter(ItemPredicate::components),
				ItemSubPredicate.CODEC.optionalFieldOf("predicates", Map.of()).forGetter(ItemPredicate::subPredicates)
			)
			.apply(instance, ItemPredicate::new)
	);

	public boolean test(ItemStack itemStack) {
		if (this.items.isPresent() && !itemStack.is((HolderSet<Item>)this.items.get())) {
			return false;
		} else if (!this.count.matches(itemStack.getCount())) {
			return false;
		} else if (!this.components.test((DataComponentHolder)itemStack)) {
			return false;
		} else {
			for (ItemSubPredicate itemSubPredicate : this.subPredicates.values()) {
				if (!itemSubPredicate.matches(itemStack)) {
					return false;
				}
			}

			return true;
		}
	}

	public static class Builder {
		private Optional<HolderSet<Item>> items = Optional.empty();
		private MinMaxBounds.Ints count = MinMaxBounds.Ints.ANY;
		private DataComponentPredicate components = DataComponentPredicate.EMPTY;
		private final ImmutableMap.Builder<ItemSubPredicate.Type<?>, ItemSubPredicate> subPredicates = ImmutableMap.builder();

		private Builder() {
		}

		public static ItemPredicate.Builder item() {
			return new ItemPredicate.Builder();
		}

		public ItemPredicate.Builder of(ItemLike... items) {
			this.items = Optional.of(HolderSet.direct(itemLike -> itemLike.asItem().builtInRegistryHolder(), items));
			return this;
		}

		public ItemPredicate.Builder of(TagKey<Item> tag) {
			this.items = Optional.of(BuiltInRegistries.ITEM.getOrCreateTag(tag));
			return this;
		}

		public ItemPredicate.Builder withCount(MinMaxBounds.Ints count) {
			this.count = count;
			return this;
		}

		public <T extends ItemSubPredicate> ItemPredicate.Builder withSubPredicate(ItemSubPredicate.Type<T> type, T itemSubPredicate) {
			this.subPredicates.put(type, itemSubPredicate);
			return this;
		}

		public ItemPredicate.Builder hasComponents(DataComponentPredicate components) {
			this.components = components;
			return this;
		}

		public ItemPredicate build() {
			return new ItemPredicate(this.items, this.count, this.components, this.subPredicates.build());
		}
	}
}