RocketChat/Rocket.Chat

import type { ServerMethods } from '@rocket.chat/ddp-client';
import { Subscriptions } from '@rocket.chat/models';
import { check } from 'meteor/check';
import { Meteor } from 'meteor/meteor';

import { notifyOnSubscriptionChangedByRoomIdAndUserIds } from '../lib/notifyListener';

declare module '@rocket.chat/ddp-client' {
    // eslint-disable-next-line @typescript-eslint/naming-convention
    interface ServerMethods {
        unblockUser({ rid, blocked }: { rid: string; blocked: string }): boolean;
    }
}

Meteor.methods<ServerMethods>({
    async unblockUser({ rid, blocked }) {
        check(rid, String);
        check(blocked, String);
        const userId = Meteor.userId();

        if (!userId) {
            throw new Meteor.Error('error-invalid-user', 'Invalid user', { method: 'blockUser' });
        }

        const [blockedUser, blockerUser] = await Promise.all([
            Subscriptions.findOneByRoomIdAndUserId(rid, blocked, { projection: { _id: 1 } }),
            Subscriptions.findOneByRoomIdAndUserId(rid, userId, { projection: { _id: 1 } }),
        ]);

        if (!blockedUser || !blockerUser) {
            throw new Meteor.Error('error-invalid-room', 'Invalid room', { method: 'blockUser' });
        }

        const [blockedResponse, blockerResponse] = await Subscriptions.unsetBlockedByRoomId(rid, blocked, userId);

        const listenerUsers = [...(blockedResponse?.modifiedCount ? [blocked] : []), ...(blockerResponse?.modifiedCount ? [userId] : [])];

        if (listenerUsers.length) {
            void notifyOnSubscriptionChangedByRoomIdAndUserIds(rid, listenerUsers);
        }

        return true;
    },
});