public async Task <IActionResult> CancelPromotionAsync([FromRoute] string promotionalCode)
{
var promotion = await _promotionService.FindPromotionOrNullAsync(promotionalCode);
if (promotion == null)
{
return(this.NotFound("Promotion not found."));
}
var result = await _promotionService.CancelPromotionAsync(promotion, new UtcNowDateTimeProvider());
if (result.IsValid)
{
return(this.Ok(_mapper.Map <PromotionDto>(result.Response)));
}
result.AddToModelState(ModelState);
return(this.BadRequest(new ValidationProblemDetails(ModelState)));
}