RocketChat/Rocket.Chat

import { FederationRoomEvents, Rooms } from '@rocket.chat/models';

import { hasExternalDomain } from '../functions/helpers';
import { dispatchEvent } from '../handler';
import { getFederationDomain } from '../lib/getFederationDomain';
import { clientLogger } from '../lib/logger';

async function beforeDeleteRoom(roomId) {
    const room = await Rooms.findOneById(roomId, { projection: { federation: 1 } });

    // If room does not exist, skip
    if (!room) {
        return roomId;
    }

    // If there are not federated users on this room, ignore it
    if (!hasExternalDomain(room)) {
        return roomId;
    }

    clientLogger.debug({ msg: 'beforeDeleteRoom', room });

    try {
        // Create the message event
        const event = await FederationRoomEvents.createDeleteRoomEvent(getFederationDomain(), room._id);

        // Dispatch event (async)
        dispatchEvent(room.federation.domains, event);
    } catch (err) {
        clientLogger.error({ msg: 'beforeDeleteRoom => Could not remove room:', err });

        throw err;
    }

    return roomId;
}

export const definition = {
    hook: 'beforeDeleteRoom',
    callback: beforeDeleteRoom,
    id: 'federation-before-delete-room',
};