package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.Typed;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.types.Type;
import com.mojang.datafixers.types.templates.TaggedChoice.TaggedChoiceType;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.DynamicOps;
import java.util.Locale;
import java.util.function.Function;
import net.minecraft.Util;
import net.minecraft.util.datafix.ExtraDataFixUtils;

public abstract class EntityRenameFix extends DataFix {
	protected final String name;

	public EntityRenameFix(String name, Schema outputSchema, boolean changesType) {
		super(outputSchema, changesType);
		this.name = name;
	}

	@Override
	public TypeRewriteRule makeRule() {
		TaggedChoiceType<String> taggedChoiceType = (TaggedChoiceType<String>)this.getInputSchema().findChoiceType(References.ENTITY);
		TaggedChoiceType<String> taggedChoiceType2 = (TaggedChoiceType<String>)this.getOutputSchema().findChoiceType(References.ENTITY);
		Function<String, Type<?>> function = Util.memoize((Function<String, Type<?>>)(string -> {
			Type<?> type = (Type<?>)taggedChoiceType.types().get(string);
			return ExtraDataFixUtils.patchSubType(type, taggedChoiceType, taggedChoiceType2);
		}));
		return this.fixTypeEverywhere(this.name, taggedChoiceType, taggedChoiceType2, dynamicOps -> pair -> {
			String string = (String)pair.getFirst();
			Type<?> type = (Type<?>)function.apply(string);
			Pair<String, Typed<?>> pair2 = this.fix(string, this.getEntity(pair.getSecond(), dynamicOps, type));
			Type<?> type2 = (Type<?>)taggedChoiceType2.types().get(pair2.getFirst());
			if (!type2.equals(pair2.getSecond().getType(), true, true)) {
				throw new IllegalStateException(String.format(Locale.ROOT, "Dynamic type check failed: %s not equal to %s", type2, pair2.getSecond().getType()));
			} else {
				return Pair.of(pair2.getFirst(), pair2.getSecond().getValue());
			}
		});
	}

	private <A> Typed<A> getEntity(Object value, DynamicOps<?> ops, Type<A> type) {
		return new Typed<>(type, ops, (A)value);
	}

	protected abstract Pair<String, Typed<?>> fix(String entityName, Typed<?> typed);
}