package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.OpticFinder;
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.serialization.Dynamic;
import java.util.Map;
import net.minecraft.nbt.NbtFormatException;

public class WorldGenSettingsDisallowOldCustomWorldsFix extends DataFix {
    public WorldGenSettingsDisallowOldCustomWorldsFix(Schema p_185157_) {
        super(p_185157_, false);
    }

    @Override
    protected TypeRewriteRule makeRule() {
        Type<?> type = this.getInputSchema().getType(References.WORLD_GEN_SETTINGS);
        OpticFinder<?> opticfinder = type.findField("dimensions");
        return this.fixTypeEverywhereTyped(
            "WorldGenSettingsDisallowOldCustomWorldsFix_" + this.getOutputSchema().getVersionKey(),
            type,
            p_185160_ -> p_185160_.updateTyped(opticfinder, p_326665_ -> {
                p_326665_.write().map(p_326664_ -> p_326664_.getMapValues().map(p_185169_ -> {
                    p_185169_.forEach((p_326662_, p_326663_) -> {
                        if (p_326663_.get("type").asString().result().isEmpty()) {
                            throw new NbtFormatException("Unable load old custom worlds.");
                        }
                    });
                    return p_185169_;
                }));
                return p_326665_;
            })
        );
    }
}