package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.OpticFinder;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.types.Type;
import com.mojang.serialization.Dynamic;
import java.util.Optional;
import java.util.Set;
import net.minecraft.util.Util;
import net.minecraft.util.datafix.ExtraDataFixUtils;
import net.minecraft.util.datafix.LegacyComponentDataFixUtils;
import net.minecraft.util.datafix.schemas.NamespacedSchema;

public class BlockEntityCustomNameToComponentFix extends DataFix {
	private static final Set<String> NAMEABLE_BLOCK_ENTITIES = Set.of(
		"minecraft:beacon",
		"minecraft:banner",
		"minecraft:brewing_stand",
		"minecraft:chest",
		"minecraft:trapped_chest",
		"minecraft:dispenser",
		"minecraft:dropper",
		"minecraft:enchanting_table",
		"minecraft:furnace",
		"minecraft:hopper",
		"minecraft:shulker_box"
	);

	public BlockEntityCustomNameToComponentFix(final Schema outputSchema) {
		super(outputSchema, true);
	}

	@Override
	public TypeRewriteRule makeRule() {
		OpticFinder<String> idFinder = DSL.fieldFinder("id", NamespacedSchema.namespacedString());
		Type<?> inputType = this.getInputSchema().getType(References.BLOCK_ENTITY);
		Type<?> outputType = this.getOutputSchema().getType(References.BLOCK_ENTITY);
		Type<?> patchedInputType = ExtraDataFixUtils.patchSubType(inputType, inputType, outputType);
		return this.fixTypeEverywhereTyped(
			"BlockEntityCustomNameToComponentFix",
			inputType,
			outputType,
			input -> {
				Optional<String> id = input.getOptional(idFinder);
				return id.isPresent() && !NAMEABLE_BLOCK_ENTITIES.contains(id.get())
					? ExtraDataFixUtils.cast(outputType, input)
					: Util.writeAndReadTypedOrThrow(ExtraDataFixUtils.cast(patchedInputType, input), outputType, BlockEntityCustomNameToComponentFix::fixTagCustomName);
			}
		);
	}

	public static <T> Dynamic<T> fixTagCustomName(final Dynamic<T> tag) {
		String name = tag.get("CustomName").asString("");
		return name.isEmpty() ? tag.remove("CustomName") : tag.set("CustomName", LegacyComponentDataFixUtils.createPlainTextComponent(tag.getOps(), name));
	}
}