private async Task <string> GetInvalidCoffeesMessage(
OrderContainedInvalidCoffeesException ex, CancellationToken cancellationToken)
{
var joinedInvalidCoffeeNames = (await _coffeeRepository.Get(ex.Coffees, cancellationToken))
.Select(c => c.Name.ToString())
.Aggregate((a, b) => $"{a}, {b}");
var message = $"Sorry, the following coffees aren't being offered in this roasting event: {joinedInvalidCoffeeNames}. " +
"Please include only the listed coffees when placing an order.";
return(message);
}
public async Task Handle(
PlaceOrderCommand cmd,
DomainBehaviorException exception,
RequestExceptionHandlerState <Unit> state,
CancellationToken cancellationToken)
{
var msg = exception switch
{
ContactNotPartOfRoastingEventException =>
"Sorry, you cannot place an order at this time. Keep an eye out for the next text blast!",
ContactAlreadyPlacedOrderException =>
"Woops! Looks like you already placed an order. Reply CANCEL to cancel your order first if you want to make a change.",
OrderContainedInvalidCoffeesException ex =>
await GetInvalidCoffeesMessage(ex, cancellationToken),
_ =>
throw new ArgumentOutOfRangeException(nameof(exception)),
};
await _outboundSms.Send(cmd.PhoneNumber, SmsMessage.Create(msg));
state.SetHandled(Unit.Value);
}
