public async Task <IActionResult> ModifyUserRole(string username, string role) { // Check that specified user exist var checkUsr = await _dbHandler.GetUserAsync(username); if (checkUsr == null) { return(BadRequest(new GeneralMessage() { Message = "User does not exist" })); } // Validate the role if (role != "User" && role != "Admin") { return(BadRequest(new GeneralMessage() { Message = "Invalid role type" })); } // Convert role string into an Enum UserRole roleType = (UserRole)Enum.Parse(typeof(UserRole), role); // Do the change var response = await _dbHandler.ChangeUserRole(checkUsr, roleType); if (response.MessageType == MessageType.NOK) { return(BadRequest(new GeneralMessage() { Message = response.MessageText })); } return(Ok(new GeneralMessage() { Message = "Role has been changed" })); }