public async Task <ActionResult <CheckResult> > Get([FromRoute] CheckOrderOnStockCommand command)
{
var result = new CheckResult();
// the lab business rule has exploded and we decide to return a bad request
// in a real system a middleware/filter and a proper problem details implementation should
// should be used for proper error and return code handling
try
{
result.OnStock = await _orderCheckingService.IsOnStockAsync(command);
if (result.OnStock)
{
return(Ok(result));
}
else
{
return(NotFound(result));
}
}
catch (ArgumentOutOfRangeException e)
{
return(BadRequest(e.Message));
}
}
public async Task <bool> IsOnStockAsync(CheckOrderOnStockCommand command)
{
var labs = await _labProvider.GetExistingLabNamesAsync();
// check business rules - in this case we check if we have a valid lab
command.Validate(labs);
return(await _repo.IsOrderOnStockAsync(command.OPC, command.Lab));
}
public static void Validate(this CheckOrderOnStockCommand checkOrder, List <string> validLabs)
{
// check if we have a valid lab
if (!validLabs.Contains(checkOrder.Lab))
{
throw new ArgumentOutOfRangeException($"The lab '{checkOrder.Lab}' does not exist.");
}
}
