package net.minecraft.world.flag;

import com.mojang.serialization.Codec;
import java.util.Set;
import java.util.stream.Collectors;
import net.minecraft.resources.Identifier;

public class FeatureFlags {
	public static final FeatureFlag VANILLA;
	public static final FeatureFlag TRADE_REBALANCE;
	public static final FeatureFlag REDSTONE_EXPERIMENTS;
	public static final FeatureFlag MINECART_IMPROVEMENTS;
	public static final FeatureFlagRegistry REGISTRY;
	public static final Codec<FeatureFlagSet> CODEC;
	public static final FeatureFlagSet VANILLA_SET;
	public static final FeatureFlagSet DEFAULT_FLAGS;

	public static String printMissingFlags(final FeatureFlagSet allowedFlags, final FeatureFlagSet requestedFlags) {
		return printMissingFlags(REGISTRY, allowedFlags, requestedFlags);
	}

	public static String printMissingFlags(final FeatureFlagRegistry registry, final FeatureFlagSet allowedFlags, final FeatureFlagSet requestedFlags) {
		Set<Identifier> requestedFlagIds = registry.toNames(requestedFlags);
		Set<Identifier> allowedFlagsIds = registry.toNames(allowedFlags);
		return (String)requestedFlagIds.stream().filter(f -> !allowedFlagsIds.contains(f)).map(Identifier::toString).collect(Collectors.joining(", "));
	}

	public static boolean isExperimental(final FeatureFlagSet features) {
		return !features.isSubsetOf(VANILLA_SET);
	}

	static {
		FeatureFlagRegistry.Builder builder = new FeatureFlagRegistry.Builder("main");
		VANILLA = builder.createVanilla("vanilla");
		TRADE_REBALANCE = builder.createVanilla("trade_rebalance");
		REDSTONE_EXPERIMENTS = builder.createVanilla("redstone_experiments");
		MINECART_IMPROVEMENTS = builder.createVanilla("minecart_improvements");
		REGISTRY = builder.build();
		CODEC = REGISTRY.codec();
		VANILLA_SET = FeatureFlagSet.of(VANILLA);
		DEFAULT_FLAGS = VANILLA_SET;
	}
}