package net.minecraft.commands.arguments;

import com.mojang.brigadier.StringReader;
import com.mojang.brigadier.arguments.ArgumentType;
import com.mojang.brigadier.context.CommandContext;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import com.mojang.brigadier.exceptions.DynamicCommandExceptionType;
import com.mojang.brigadier.suggestion.Suggestions;
import com.mojang.brigadier.suggestion.SuggestionsBuilder;
import java.util.Arrays;
import java.util.Collection;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.SharedSuggestionProvider;
import net.minecraft.network.chat.Component;
import net.minecraft.world.level.GameType;

public class GameModeArgument implements ArgumentType<GameType> {
	private static final Collection<String> EXAMPLES = (Collection<String>)Stream.of(GameType.SURVIVAL, GameType.CREATIVE)
		.map(GameType::getName)
		.collect(Collectors.toList());
	private static final GameType[] VALUES = GameType.values();
	private static final DynamicCommandExceptionType ERROR_INVALID = new DynamicCommandExceptionType(
		object -> Component.translatableEscape("argument.gamemode.invalid", object)
	);

	public GameType parse(StringReader reader) throws CommandSyntaxException {
		String string = reader.readUnquotedString();
		GameType gameType = GameType.byName(string, null);
		if (gameType == null) {
			throw ERROR_INVALID.createWithContext(reader, string);
		} else {
			return gameType;
		}
	}

	@Override
	public <S> CompletableFuture<Suggestions> listSuggestions(CommandContext<S> commandContext, SuggestionsBuilder suggestionsBuilder) {
		return commandContext.getSource() instanceof SharedSuggestionProvider
			? SharedSuggestionProvider.suggest(Arrays.stream(VALUES).map(GameType::getName), suggestionsBuilder)
			: Suggestions.empty();
	}

	@Override
	public Collection<String> getExamples() {
		return EXAMPLES;
	}

	public static GameModeArgument gameMode() {
		return new GameModeArgument();
	}

	public static GameType getGameMode(CommandContext<CommandSourceStack> context, String name) throws CommandSyntaxException {
		return context.getArgument(name, GameType.class);
	}
}