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/*
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 { route } from "@spacebar/api";
import { Guild, Member, Snowflake } from "@spacebar/util";
import { Request, Response, Router } from "express";
import { IsNull, LessThan } from "typeorm";
const router = Router();
//Returns all inactive members, respecting role hierarchy
const inactiveMembers = async (guild_id: string, user_id: string, days: number, roles: string[] = []) => {
const date = new Date();
date.setDate(date.getDate() - days);
//Snowflake should have `generateFromTime` method? Or similar?
const minId = BigInt(date.valueOf() - Snowflake.EPOCH) << BigInt(22);
/**
idea: ability to customise the cutoff variable
possible candidates: public read receipt, last presence, last VC leave
**/
let members = await Member.find({
where: [
{
guild_id,
last_message_id: LessThan(minId.toString()),
},
{
guild_id,
last_message_id: IsNull(),
},
],
relations: ["roles"],
});
if (!members.length) return [];
//I'm sure I can do this in the above db query ( and it would probably be better to do so ), but oh well.
if (roles.length && members.length)
members = members.filter((user) => user.roles?.some((role) => roles.includes(role.id)));
const me = await Member.findOneOrFail({
where: { id: user_id, guild_id },
relations: ["roles"],
});
const myHighestRole = Math.max(...(me.roles?.map((x) => x.position) || []));
const guild = await Guild.findOneOrFail({ where: { id: guild_id } });
members = members.filter(
(member) =>
member.id !== guild.owner_id && //can't kick owner
member.roles?.some(
(role) =>
role.position < myHighestRole || //roles higher than me can't be kicked
me.id === guild.owner_id //owner can kick anyone
)
);
return members;
};
router.get(
"/",
route({
responses: {
"200": {
body: "GuildPruneResponse",
},
},
}),
async (req: Request, res: Response) => {
const days = parseInt(req.query.days as string);
let roles = req.query.include_roles;
if (typeof roles === "string") roles = [roles]; //express will return array otherwise
const members = await inactiveMembers(req.params.guild_id, req.user_id, days, roles as string[]);
res.send({ pruned: members.length });
}
);
router.post(
"/",
route({
permission: "KICK_MEMBERS",
right: "KICK_BAN_MEMBERS",
responses: {
200: {
body: "GuildPurgeResponse",
},
403: {
body: "APIErrorResponse",
},
},
}),
async (req: Request, res: Response) => {
const days = parseInt(req.body.days);
let roles = req.query.include_roles;
if (typeof roles === "string") roles = [roles];
const { guild_id } = req.params;
const members = await inactiveMembers(guild_id, req.user_id, days, roles as string[]);
await Promise.all(members.map((x) => Member.removeFromGuild(x.id, guild_id)));
res.send({ purged: members.length });
}
);
export default router;
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