package ru.bclib.api.datafixer;

import net.minecraft.nbt.CompoundTag;
import net.minecraft.nbt.ListTag;
import org.jetbrains.annotations.NotNull;
import ru.bclib.interfaces.PatchBiFunction;
import ru.bclib.interfaces.PatchFunction;

import java.util.HashMap;
import java.util.List;
import java.util.Map;


/**
 * A Patch for level.dat that is always executed no matter what Patchlevel is set in a world.
 */
public abstract class ForcedLevelPatch extends Patch {
	protected ForcedLevelPatch(@NotNull String modID, String version) {
		super(modID, version, true);
	}
	
	@Override
	public final Map<String, String> getIDReplacements() {
		return new HashMap<String, String>();
	}
	
	@Override
	public final PatchFunction<CompoundTag, Boolean> getWorldDataPatcher() { return null; }
	
	@Override
	public final PatchBiFunction<ListTag, ListTag, Boolean> getBlockStatePatcher() { return null; }
	
	@Override
	public final List<String> getWorldDataIDPaths() {
		return null;
	}
	
	@Override
	public PatchFunction<CompoundTag, Boolean> getLevelDatPatcher() { return this::runLevelDatPatch; }
	
	/**
	 * Called with the contents of level.dat in {@code root}
	 * @param root The contents of level.dat
	 * @param profile The active migration profile
	 * @return true, if the run did change the contents of root
	 */
	abstract protected Boolean runLevelDatPatch(CompoundTag root, MigrationProfile profile);
}