package net.minecraft.server.commands;

import com.mojang.brigadier.CommandDispatcher;
import com.mojang.brigadier.arguments.BoolArgumentType;
import com.mojang.brigadier.arguments.IntegerArgumentType;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import com.mojang.brigadier.exceptions.DynamicCommandExceptionType;
import com.mojang.brigadier.exceptions.SimpleCommandExceptionType;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.Commands;
import net.minecraft.commands.arguments.GameModeArgument;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.ComponentUtils;
import net.minecraft.network.chat.MutableComponent;
import net.minecraft.util.HttpUtil;
import net.minecraft.world.level.GameType;
import org.jspecify.annotations.Nullable;

public class PublishCommand {
	private static final SimpleCommandExceptionType ERROR_FAILED = new SimpleCommandExceptionType(Component.translatable("commands.publish.failed"));
	private static final DynamicCommandExceptionType ERROR_ALREADY_PUBLISHED = new DynamicCommandExceptionType(
		port -> Component.translatableEscape("commands.publish.alreadyPublished", port)
	);

	public static void register(final CommandDispatcher<CommandSourceStack> dispatcher) {
		dispatcher.register(
			Commands.literal("publish")
				.requires(Commands.hasPermission(Commands.LEVEL_OWNERS))
				.executes(c -> publish(c.getSource(), HttpUtil.getAvailablePort(), false, null))
				.then(
					Commands.argument("allowCommands", BoolArgumentType.bool())
						.executes(c -> publish(c.getSource(), HttpUtil.getAvailablePort(), BoolArgumentType.getBool(c, "allowCommands"), null))
						.then(
							Commands.argument("gamemode", GameModeArgument.gameMode())
								.executes(
									c -> publish(c.getSource(), HttpUtil.getAvailablePort(), BoolArgumentType.getBool(c, "allowCommands"), GameModeArgument.getGameMode(c, "gamemode"))
								)
								.then(
									Commands.argument("port", IntegerArgumentType.integer(0, 65535))
										.executes(
											c -> publish(
												c.getSource(), IntegerArgumentType.getInteger(c, "port"), BoolArgumentType.getBool(c, "allowCommands"), GameModeArgument.getGameMode(c, "gamemode")
											)
										)
								)
						)
				)
		);
	}

	private static int publish(final CommandSourceStack source, final int port, final boolean allowCommands, @Nullable final GameType type) throws CommandSyntaxException {
		if (source.getServer().isPublished()) {
			throw ERROR_ALREADY_PUBLISHED.create(source.getServer().getPort());
		} else if (!source.getServer().publishServer(type, allowCommands, port)) {
			throw ERROR_FAILED.create();
		} else {
			source.sendSuccess(() -> getSuccessMessage(port), true);
			return port;
		}
	}

	public static MutableComponent getSuccessMessage(final int port) {
		Component portText = ComponentUtils.copyOnClickText(String.valueOf(port));
		return Component.translatable("commands.publish.started", portText);
	}
}