public IActionResult GetOneBeforeCellphone(string beforeCellphone)
 {
     try
     {
         CellphoneModel cellphoneModel = cellphoneRepository.GetOneBeforeCellphone(beforeCellphone);
         return(Ok(cellphoneModel));
     }
     catch (Exception ex)
     {
         Errors errors = ErrorsHelper.GetErrors(ex);
         return(StatusCode(StatusCodes.Status500InternalServerError, errors));
     }
 }
        public IActionResult AddCellphone(CellphoneModel cellphoneModel)
        {
            try
            {
                if (cellphoneModel == null)
                {
                    return(BadRequest("Data is null."));
                }
                if (!ModelState.IsValid)
                {
                    Errors errors = ErrorsHelper.GetErrors(ModelState);
                    return(BadRequest(errors));
                }

                CellphoneModel addedCellphone = cellphoneRepository.AddCellphone(cellphoneModel);
                return(StatusCode(StatusCodes.Status201Created, addedCellphone));
            }
            catch (Exception ex)
            {
                Errors errors = ErrorsHelper.GetErrors(ex);
                return(StatusCode(StatusCodes.Status500InternalServerError, errors));
            }
        }
        public IActionResult UpdateCellphone(string beforeCellphone, CellphoneModel cellphoneModel)
        {
            try
            {
                if (cellphoneModel == null)
                {
                    return(BadRequest("Data is null."));
                }
                if (!ModelState.IsValid)
                {
                    Errors errors = ErrorsHelper.GetErrors(ModelState);
                    return(BadRequest(errors));
                }

                cellphoneModel.beforeCellphone = beforeCellphone;
                CellphoneModel updatedCellphone = cellphoneRepository.UpdateCellphone(cellphoneModel);
                return(Ok(updatedCellphone));
            }
            catch (Exception ex)
            {
                Errors errors = ErrorsHelper.GetErrors(ex);
                return(StatusCode(StatusCodes.Status500InternalServerError, errors));
            }
        }