import {
	type ChatInputCommandInteraction,
	type Client,
	type GuildMember,
	SlashCommandBuilder,
} from "discord.js";

import { roblox } from "@/roblox/client";
import { processRobloxUserInteraction } from "@/roblox/robloxUser";
import type { RobloxUserId } from "@/roblox/types";
import { hasManagerPermissions } from "@/utils/discord/permissions";

const commandData = new SlashCommandBuilder()
	.setName("user")
	.setDescription("Get information about a Roblox user")
	.addSubcommand((subcommand) =>
		subcommand
			.setName("discord")
			.setDescription("Use Bloxlink to get Roblox info from a Discord user")
			.addUserOption((option) =>
				option
					.setName("user")
					.setDescription("The Discord user to look up")
					.setRequired(true),
			),
	)
	.addSubcommand((subcommand) =>
		subcommand
			.setName("roblox")
			.setDescription("Get Roblox info from a user ID or username")
			.addStringOption((option) =>
				option
					.setName("input")
					.setDescription(
						"The Roblox username to lookup - prefix with id: for IDs",
					)
					.setRequired(true),
			),
	);

async function execute(
	_client: Client,
	interaction: ChatInputCommandInteraction,
) {
	const subcommand = interaction.options.getSubcommand();
	const isModerator = await hasManagerPermissions(
		interaction.member as GuildMember,
	);
	await interaction.deferReply();

	try {
		let id: RobloxUserId;

		if (subcommand === "discord") {
			const target = interaction.options.getUser("user", true);
			const [linkedRes, linkedErr] = await roblox.getLinkedAccount(target.id);
			if (linkedErr) {
				const message = linkedErr.error;
				if (message === "User not found") {
					await interaction.editReply(
						"No linked Roblox account found for that user.",
					);
					return;
				}
				await interaction.editReply(
					`There was an error fetching the linked account: ${linkedErr.error}`,
				);
				return;
			}
			id = linkedRes.robloxID;
		} else {
			const input = interaction.options.getString("input", true);
			const isId = input.startsWith("id:");

			if (isId) {
				id = input.slice(3);
				if (!id) {
					await interaction.editReply("Invalid ID provided.");
					return;
				}
			} else {
				const [usersRes] = await roblox.getUsersByUsernames([input]);
				if (!usersRes || !usersRes.data || usersRes.data.length === 0) {
					await interaction.editReply("User not found");
					return;
				}
				id = usersRes.data[0].id;
			}
		}

		await processRobloxUserInteraction(interaction, id, isModerator);
	} catch (err) {
		console.error(err);
		await interaction.editReply(
			"An unexpected error occurred while fetching the user.",
		);
	}
}

export default {
	data: commandData,
	execute,
};