def updateUserProfileField = IsAdminAsync()

in app/controllers/UserController.scala [152:181]
30 lines of code
9 McCabe index (conditional complexity)

  def updateUserProfileField = IsAdminAsync(circe.json(2048)) { _=> request=>
    request.body.as[UserProfileFieldUpdate] match {
      case Left(err)=>
        logger.error(err.toString)
        Future(BadRequest(GenericErrorResponse("bad_request", err.toString).asJson))
      case Right(updateRq)=>
        userProfileDAO.userProfileForEmail(updateRq.user).flatMap({
          case None=>
            Future(BadRequest(GenericErrorResponse("not_found", s"user ${updateRq.user} not found").asJson))
          case Some(Left(err))=>
            logger.error(err.toString)
            Future(InternalServerError(GenericErrorResponse("db_error", err.toString).asJson))
          case Some(Right(originalProfile))=>
            performUpdate(originalProfile, updateRq) match {
              case Right(updatedProfile) =>
                logger.info(s"updatedProfile is $updatedProfile")
                userProfileDAO
                  .put(updatedProfile)
                  .map(_ => Ok(ObjectGetResponse("updated", "profile", updatedProfile).asJson))
                  .recover({
                    case err: Throwable =>
                      logger.error(s"Could not update user profile for ${updateRq.user}: ${err.getMessage}", err)
                      InternalServerError(GenericErrorResponse("db_error", err.getMessage).asJson)
                  })
              case Left(err) =>
                Future(BadRequest(GenericErrorResponse("bad_request", err).asJson))
            }
            })
        }
  }