backend: Enhance recording service to support field filtering in getRecording and getAllRecordings methods

backend/src/controllers/recording.controller.ts

@@ -70,10 +70,12 @@ export const getRecording = async (req: Request, res: Response) => {
 	const logger = container.get(LoggerService);
 	const recordingService = container.get(RecordingService);
 	const recordingId = req.params.recordingId;
+	const fields = req.query.fields as string | undefined;
+
 	logger.info(`Getting recording ${recordingId}`);
 
 	try {
-		const recordingInfo = await recordingService.getRecording(recordingId);
+		const recordingInfo = await recordingService.getRecording(recordingId, fields);
 		return res.status(200).json(recordingInfo);
 	} catch (error) {
 		if (error instanceof OpenViduMeetError) {

backend/src/helpers/utils.helper.ts

@@ -1,18 +1,33 @@
+import { MeetRecordingInfo, MeetRoom } from '@typings-ce';
+
 export class UtilsHelper {
-	private constructor() {
-		// Prevent instantiation of this utility class
+	// Prevent instantiation of this utility class.
+	private constructor() {}
+
+	/**
+	 * Filters the fields of an object based on a list of keys.
+	 *
+	 * @param obj - The object to filter (it can be a MeetRoom or MeetRecordingInfo).
+	 * @param fields - A comma-separated string or an array of field names to keep.
+	 * @returns A new object containing only the specified keys.
+	 */
+	static filterObjectFields<T extends MeetRecordingInfo | MeetRoom>(obj: T, fields?: string | string[]): Partial<T> {
+		// If no fields are provided, return the full object.
+		if (!fields || (typeof fields === 'string' && fields.trim().length === 0)) {
+			return obj;
+		}
+
+		// Convert the string to an array if necessary.
+		const fieldsArray = Array.isArray(fields) ? fields : fields.split(',').map((f) => f.trim());
+
+		// Reduce the object by only including the specified keys.
+		return fieldsArray.reduce((acc, field) => {
+			if (Object.prototype.hasOwnProperty.call(obj, field)) {
+				// Use keyof T to properly type the field access
+				acc[field as keyof T] = obj[field as keyof T];
+			}
+
+			return acc;
+		}, {} as Partial<T>);
 	}
-
-	static filterObjectFields = (obj: Record<string, unknown>, fields: string[]): Record<string, any> => {
-		return fields.reduce(
-			(acc, field) => {
-				if (Object.prototype.hasOwnProperty.call(obj, field)) {
-					acc[field] = obj[field];
-				}
-
-				return acc;
-			},
-			{} as Record<string, unknown>
-		);
-	};
 }

backend/src/middlewares/request-validators/recording-validator.middleware.ts

@@ -52,7 +52,8 @@ const GetRecordingsFiltersSchema: z.ZodType<MeetRecordingFilters> = z.object({
 		.default(10),
 	// status: z.string().optional(),
 	roomId: z.string().optional(),
-	nextPageToken: z.string().optional()
+	nextPageToken: z.string().optional(),
+	fields: z.string().optional(),
 });
 
 export const withValidStartRecordingRequest = (req: Request, res: Response, next: NextFunction) => {
@@ -77,7 +78,7 @@ export const withValidRecordingId = (req: Request, res: Response, next: NextFunc
 	next();
 };
 
-export const withValidGetRecordingsRequest = (req: Request, res: Response, next: NextFunction) => {
+export const withValidRecordingFiltersRequest = (req: Request, res: Response, next: NextFunction) => {
 	const { success, error, data } = GetRecordingsFiltersSchema.safeParse(req.query);
 
 	if (!success) {

backend/src/routes/recording.routes.ts

@@ -8,7 +8,7 @@ import {
 	tokenAndRoleValidator,
 	withRecordingEnabled,
 	withCorrectPermissions,
-	withValidGetRecordingsRequest,
+	withValidRecordingFiltersRequest,
 	withValidRecordingBulkDeleteRequest,
 	withValidRecordingId,
 	withValidStartRecordingRequest,
@@ -35,7 +35,7 @@ recordingRouter.get(
 recordingRouter.get(
 	'/',
 	withAuth(apiKeyValidator, tokenAndRoleValidator(UserRole.ADMIN)),
-	withValidGetRecordingsRequest,
+	withValidRecordingFiltersRequest,
 	recordingCtrl.getRecordings
 );
 recordingRouter.delete(

backend/src/services/recording.service.ts

@@ -37,6 +37,7 @@ import { MeetLock } from '../helpers/redis.helper.js';
 import { IScheduledTask, TaskSchedulerService } from './task-scheduler.service.js';
 import { SystemEventService } from './system-event.service.js';
 import { SystemEventType } from '../models/system-event.model.js';
+import { UtilsHelper } from '../helpers/utils.helper.js';
 
 @injectable()
 export class RecordingService {
@@ -228,10 +229,10 @@ export class RecordingService {
 	 * @param recordingId - The unique identifier of the recording.
 	 * @returns A promise that resolves to a MeetRecordingInfo object.
 	 */
-	async getRecording(recordingId: string): Promise<MeetRecordingInfo> {
+	async getRecording(recordingId: string, fields?: string): Promise<MeetRecordingInfo> {
 		const { recordingInfo } = await this.getMeetRecordingInfoFromMetadata(recordingId);
 
-		return recordingInfo;
+		return UtilsHelper.filterObjectFields(recordingInfo, fields) as MeetRecordingInfo;
 	}
 
 	/**
@@ -245,7 +246,7 @@ export class RecordingService {
 	 * - `nextPageToken`: (Optional) A token to retrieve the next page of results, if available.
 	 * @throws Will throw an error if there is an issue retrieving the recordings.
 	 */
-	async getAllRecordings({ maxItems, nextPageToken, roomId }: MeetRecordingFilters): Promise<{
+	async getAllRecordings({ maxItems, nextPageToken, roomId, fields }: MeetRecordingFilters): Promise<{
 		recordings: MeetRecordingInfo[];
 		isTruncated: boolean;
 		nextPageToken?: string;
@@ -274,7 +275,9 @@ export class RecordingService {
 				}
 			});
 
-			const recordings: MeetRecordingInfo[] = await Promise.all(promises);
+			let recordings: MeetRecordingInfo[] = await Promise.all(promises);
+
+			recordings = recordings.map((rec) => UtilsHelper.filterObjectFields(rec, fields)) as MeetRecordingInfo[];
 
 			this.logger.info(`Retrieved ${recordings.length} recordings.`);
 			// Return the paginated list of recordings

backend/src/services/room.service.ts

@@ -89,7 +89,7 @@ export class RoomService {
 			metadata: JSON.stringify({
 				createdBy: MEET_NAME_ID,
 				roomOptions: MeetRoomHelper.toOpenViduOptions(meetRoom)
-			}),
+			})
 			//TODO: Uncomment this when bug in LiveKit is fixed
 			// When it is defined, the room will be closed although there are participants
 			// emptyTimeout: ms('20s') / 1000,
@@ -129,13 +129,8 @@ export class RoomService {
 	}> {
 		const response = await this.storageService.getMeetRooms(maxItems, nextPageToken);
 
-		if (fields && fields.length > 0) {
-			const fieldsArray = Array.isArray(fields) ? fields : fields.split(',').map((f) => f.trim());
-			const filteredRooms = response.rooms.map((room) =>
-				UtilsHelper.filterObjectFields(room as unknown as Record<string, unknown>, fieldsArray)
-			);
-			response.rooms = filteredRooms as MeetRoom[];
-		}
+		const filteredRooms = response.rooms.map((room) => UtilsHelper.filterObjectFields(room, fields));
+		response.rooms = filteredRooms as MeetRoom[];
 
 		return response;
 	}
@@ -149,16 +144,7 @@ export class RoomService {
 	async getMeetRoom(roomId: string, fields?: string): Promise<MeetRoom> {
 		const meetRoom = await this.storageService.getMeetRoom(roomId);
 
-		if (fields && fields.length > 0) {
-			const fieldsArray = Array.isArray(fields) ? fields : fields.split(',').map((f) => f.trim());
-			const filteredRoom = UtilsHelper.filterObjectFields(
-				meetRoom as unknown as Record<string, unknown>,
-				fieldsArray
-			);
-			return filteredRoom as MeetRoom;
-		}
-
-		return meetRoom;
+		return UtilsHelper.filterObjectFields(meetRoom, fields) as MeetRoom;
 	}
 
 	/**