RocketChat/Rocket.Chat

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

import { UploadFS } from '../../../../server/ufs';
import { canAccessRoomAsync } from '../../../authorization/server';
import { settings } from '../../../settings/server';

declare module '@rocket.chat/ddp-client' {
    // eslint-disable-next-line @typescript-eslint/naming-convention
    interface ServerMethods {
        getS3FileUrl(fileId: string): string;
    }
}

Meteor.methods<ServerMethods>({
    async getS3FileUrl(fileId) {
        check(fileId, String);
        const uid = Meteor.userId();
        if (settings.get<boolean>('FileUpload_ProtectFiles') && !uid) {
            throw new Meteor.Error('error-invalid-user', 'Invalid user', { method: 'sendFileMessage' });
        }
        const file = await Uploads.findOneById(fileId);
        if (!file?.rid) {
            throw new Meteor.Error('error-not-allowed', 'Not allowed');
        }
        const room = await Rooms.findOneById(file.rid);
        if (uid && room && !(await canAccessRoomAsync(room, { _id: uid }))) {
            throw new Meteor.Error('error-not-allowed', 'Not allowed');
        }

        return UploadFS.getStore('AmazonS3:Uploads').getRedirectURL(file);
    },
});