/*
	Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
	Copyright (C) 2023 Spacebar and Spacebar Contributors
	
	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Affero General Public License as published
	by the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Affero General Public License for more details.
	
	You should have received a copy of the GNU Affero General Public License
	along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

import { Router, Request, Response } from "express";
import { Member, partition } from "@spacebar/util";
import { route } from "@spacebar/api";

const router = Router();

router.patch(
	"/",
	route({ permission: "MANAGE_ROLES" }),
	async (req: Request, res: Response) => {
		// Payload is JSON containing a list of member_ids, the new list of members to have the role
		const { guild_id, role_id } = req.params;
		const { member_ids } = req.body;

		const members = await Member.find({
			where: { guild_id },
			relations: ["roles"],
		});

		const [add, remove] = partition(
			members,
			(member) =>
				member_ids.includes(member.id) &&
				!member.roles.map((role) => role.id).includes(role_id),
		);

		await Promise.all([
			...add.map((member) =>
				Member.addRole(member.id, guild_id, role_id),
			),
			...remove.map((member) =>
				Member.removeRole(member.id, guild_id, role_id),
			),
		]);

		res.sendStatus(204);
	},
);

export default router;