package net.minecraft.world.level.storage.loot;

import com.google.common.collect.Maps;
import java.util.Map;
import java.util.function.Consumer;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.util.context.ContextKey;
import net.minecraft.util.context.ContextKeySet;
import net.minecraft.util.context.ContextMap;
import net.minecraft.world.item.ItemStack;
import org.jetbrains.annotations.Nullable;

public class LootParams {
	private final ServerLevel level;
	private final ContextMap params;
	private final Map<ResourceLocation, LootParams.DynamicDrop> dynamicDrops;
	private final float luck;

	public LootParams(ServerLevel level, ContextMap params, Map<ResourceLocation, LootParams.DynamicDrop> dynamicDrops, float luck) {
		this.level = level;
		this.params = params;
		this.dynamicDrops = dynamicDrops;
		this.luck = luck;
	}

	public ServerLevel getLevel() {
		return this.level;
	}

	public ContextMap contextMap() {
		return this.params;
	}

	public void addDynamicDrops(ResourceLocation location, Consumer<ItemStack> consumer) {
		LootParams.DynamicDrop dynamicDrop = (LootParams.DynamicDrop)this.dynamicDrops.get(location);
		if (dynamicDrop != null) {
			dynamicDrop.add(consumer);
		}
	}

	public float getLuck() {
		return this.luck;
	}

	public static class Builder {
		private final ServerLevel level;
		private final ContextMap.Builder params = new ContextMap.Builder();
		private final Map<ResourceLocation, LootParams.DynamicDrop> dynamicDrops = Maps.<ResourceLocation, LootParams.DynamicDrop>newHashMap();
		private float luck;

		public Builder(ServerLevel level) {
			this.level = level;
		}

		public ServerLevel getLevel() {
			return this.level;
		}

		public <T> LootParams.Builder withParameter(ContextKey<T> paramater, T value) {
			this.params.withParameter(paramater, value);
			return this;
		}

		public <T> LootParams.Builder withOptionalParameter(ContextKey<T> parameter, @Nullable T value) {
			this.params.withOptionalParameter(parameter, value);
			return this;
		}

		public <T> T getParameter(ContextKey<T> parameter) {
			return this.params.getParameter(parameter);
		}

		@Nullable
		public <T> T getOptionalParameter(ContextKey<T> parameter) {
			return this.params.getOptionalParameter(parameter);
		}

		public LootParams.Builder withDynamicDrop(ResourceLocation name, LootParams.DynamicDrop dynamicDrop) {
			LootParams.DynamicDrop dynamicDrop2 = (LootParams.DynamicDrop)this.dynamicDrops.put(name, dynamicDrop);
			if (dynamicDrop2 != null) {
				throw new IllegalStateException("Duplicated dynamic drop '" + this.dynamicDrops + "'");
			} else {
				return this;
			}
		}

		public LootParams.Builder withLuck(float luck) {
			this.luck = luck;
			return this;
		}

		public LootParams create(ContextKeySet contextKeySet) {
			ContextMap contextMap = this.params.create(contextKeySet);
			return new LootParams(this.level, contextMap, this.dynamicDrops, this.luck);
		}
	}

	@FunctionalInterface
	public interface DynamicDrop {
		void add(Consumer<ItemStack> consumer);
	}
}