public IActionResult GetCompletedSessionsByUserId(string uid) { var userId = _UsersRepository.GetUserByFirebaseUID(uid); if (userId == null) { return(Ok("No swiped sessions for that user yet.")); } var completedSessions = _repository.GetCompletedSessionsByUserId(userId.ID); var noCompletedSession = !completedSessions.Any(); if (noCompletedSession) { NotFound("You don't have any open sessions"); } return(Ok(completedSessions)); }