public SuggestionsMade(ShowId showId, PartyRequested partyRequested)
{
ShowId = showId;
PartyRequested = partyRequested;
InstantiateAnEmptyListForEveryPricingCategory();
}
public static Maybe <SuggestionsMade> TryMakeSuggestions(ShowId showId, PartyRequested partyRequested, AuditoriumSeating auditoriumSeating)
{
var suggestionsMade = new SuggestionsMade(showId, partyRequested);
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested, PricingCategory.First));
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested, PricingCategory.Second));
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested, PricingCategory.Third));
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested, PricingCategory.Mixed));
if (suggestionsMade.MatchExpectations())
{
return(new Maybe <SuggestionsMade>(suggestionsMade));
}
return(new Maybe <SuggestionsMade>());
}
public async Task <SuggestionsMade> MakeSuggestions(ShowId showId, PartyRequested partyRequested)
{
var auditoriumSeating = await _auditoriumSeatingAdapter.GetAuditoriumSeating(showId);
var suggestionsMade = new SuggestionsMade(showId, partyRequested);
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested,
PricingCategoryRequested.First));
suggestionsMade.Add(
GiveMeSuggestionsFor(auditoriumSeating, partyRequested, PricingCategoryRequested.Second));
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested,
PricingCategoryRequested.Third));
suggestionsMade.Add(GiveMeSuggestionsFor(auditoriumSeating, partyRequested,
PricingCategoryRequested.Mixed));
if (suggestionsMade.DoesMatchExpectations())
{
return(suggestionsMade);
}
return(new SuggestionNotAvailable(showId, partyRequested));
}
public async static Task <SuggestionsMade> MakeSuggestionsImperativeShell(Ports.IProvideUpToDateAuditoriumSeating auditoriumSeatingProvider, ShowId id, PartyRequested partyRequested)
{
// non-pure function
var auditoriumSeating = await auditoriumSeatingProvider.GetAuditoriumSeating(id);
// call pure function
return(SeatAllocator
.TryMakeSuggestions(id, partyRequested, auditoriumSeating)
.GetValueOrFallback(new SuggestionNotAvailable(id, partyRequested)));
// Balance restored:
// - inner hexagon knows about adapter capabilities but not implementation
// - orchestration is back in the 'core' where we can locally reason about it
// Notes:
// in this case the imperative shells can be easily distinguished by the 'async' keyword which kind of plays the role of the IO<> marker type.
}