import { Request, Response, Router } from "express";
import { Guild, getPermission, Snowflake, Member } from "@fosscord/util";
import { HTTPError } from "lambert-server";
import { route } from "@fosscord/api";

const router: Router = Router();

export interface GuildUpdateWelcomeScreenSchema {
	welcome_channels?: {
		channel_id: string;
		description: string;
		emoji_id?: string;
		emoji_name: string;
	}[];
	enabled?: boolean;
	description?: string;
}

router.get("/", route({}), async (req: Request, res: Response) => {
	const guild_id = req.params.guild_id;

	const guild = await Guild.findOneOrFail({ id: guild_id });
	await Member.IsInGuildOrFail(req.user_id, guild_id);

	res.json(guild.welcome_screen);
});

router.patch("/", route({ body: "GuildUpdateWelcomeScreenSchema", permission: "MANAGE_GUILD" }), async (req: Request, res: Response) => {
	const guild_id = req.params.guild_id;
	const body = req.body as GuildUpdateWelcomeScreenSchema;

	const guild = await Guild.findOneOrFail({ id: guild_id });

	if (!guild.welcome_screen.enabled) throw new HTTPError("Welcome screen disabled", 400);
	if (body.welcome_channels) guild.welcome_screen.welcome_channels = body.welcome_channels; // TODO: check if they exist and are valid
	if (body.description) guild.welcome_screen.description = body.description;
	if (body.enabled != null) guild.welcome_screen.enabled = body.enabled;

	res.sendStatus(204);
});

export default router;