public async Task <IActionResult> DeletePrice([FromRoute] int id)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var price = await priceRepository.Remove(id);

            if (price == null)
            {
                return(BadRequest());
            }

            PriceDTO dto = new PriceDTO();

            dto.PriceId     = price.PriceId;
            dto.designation = price.designation;
            dto.price       = price.price;
            dto.date        = price.date.ToString("yyyy-MM-dd");


            return(Ok(dto));
        }