public async Task <IActionResult> DispatchAsync <TRequest>(TRequest request)
where TRequest : IUseCaseInput
{
using var services = _serviceProvider.CreateScope();
var validator = services.ServiceProvider.GetService <IValidator <TRequest> >();
if (validator is null)
{
throw new Exception("There is no validator for request " + request.GetType().Name);
}
var validationResult = await validator.ValidateAsync(request, CancellationToken.None);
if (!validationResult.IsValid)
{
var actionPresenter = services.ServiceProvider.GetService <IPresenter <ActionOutput> >();
return(actionPresenter.Present(
ActionOutput.Failure(validationResult.Errors.First().ErrorMessage)
));
}
var result = await _mediator.Send(request);
var presenterType = typeof(IPresenter <>).MakeGenericType(result.GetType());
var presenter = services.ServiceProvider.GetService(presenterType);
if (presenter is null)
{
throw new Exception("There is no presenter for output " + result.GetType().Name);
}
var method = presenter.GetType().GetMethod(nameof(IPresenter <IOutput> .Present), new[] { result.GetType() });
return((IActionResult)method !.Invoke(presenter, new object[] { result }));
}