private async Task <Unit> AssignOrderToBaristaIfAny(Option <Guid> baristaIdOption, ToGoOrder order)
{
await baristaIdOption.MapAsync(
async baristaId =>
{
var barista = (await _baristaRepository
.Get(baristaId))
.ValueOr(() => throw new InvalidOperationException(
$"Tried to assign an order to an unexisting barista. (id: {baristaId}) " +
$"It is very likely that the claim assigning logic is broken."));
barista.CompletedOrders.Add(order);
await _baristaRepository.Update(barista);
return(Unit.Value);
});
return(Unit.Value);
}
private async Task <Option <Unit, Error> > BaristaShouldNotExist(Guid id) =>
(await _baristaRepository.Get(id))
.SomeWhen(b => !b.HasValue, Error.Conflict($"Barista {id} already exists."))
.Map(_ => Unit.Value);
private Task <Option <Barista, Error> > BaristaShouldExist(Guid baristaId) =>
_baristaRepository
.Get(baristaId)
.WithException(Error.NotFound($"No barista with id {baristaId} was found."));
