private Result <int, ApplicationError> CountFifteens(Card[] cards)
=> Result.Try(() =>
Enumerable.Range(0, 1 << cards.Length)
.Select(o => Enumerable.Range(0, cards.Length)
.Where(p => (o & (1 << p)) != 0)
.Select(q => cards[q]))
.Where(s => s.Sum(r => r.Face.GetFaceValue()) == 15).Count())
.MapOnFailure(ex => GameLogicError.Create($"Error counting 15s: {ex.Message}", ex, ErrorCodes.HandErrorCode.Create("15s")));
private Result <Card[], ApplicationError> CreateCards()
=> Result.Try(() =>
{
return((from suits in EnumHelper.EnumerateEnum <Suits>()
from faces in EnumHelper.EnumerateEnum <Faces>()
select Card.Create(suits, faces)).ToArray());
})
.MapOnFailure(ex => GameLogicError.Create($"Error creating deck of cards: {ex.Message}", ex, ErrorCodes.DeckErrorCode.Create(ex.Message)));
private Result <int, ApplicationError> CalculateHandFlush(Card[] hand, Card cutCard)
=> Result.Try(() =>
hand.All(c => c.Suit == hand[0].Suit)
? hand
.Append(cutCard)
.All(c => c.Suit == hand[0].Suit)
? hand.Length + 1
: hand.Length
: 0)
.MapOnFailure(ex => GameLogicError.Create($"Error calculating a flush in the hand", ex, ErrorCodes.HandErrorCode.Create("Flush")));
private Result <Card[], ApplicationError> ShuffleCards(Card[] cards)
=> Result.Try(() =>
{
for (int n = cards.Length - 1; n >= 0; --n)
{
var k = Random.Next(n + 1);
var temp = cards[n];
cards[n] = cards[k];
cards[k] = temp;
}
return(cards);
})
.MapOnFailure(ex => GameLogicError.Create($"Error shuffling deck of cards: {ex.Message}", ex, ErrorCodes.DeckErrorCode.Create(ex.Message)));
private Result <int[], ApplicationError> CreateArrayOfDuplicates(Card[] cards)
=> Result.Try(() =>
{
var duplicates = new int[14];
for (var i = 0; i < duplicates.Length; ++i)
{
duplicates[i] = 0;
}
foreach (var card in cards)
{
duplicates[(int)card.Face]++;
}
return(duplicates);
})
.MapOnFailure(ex => GameLogicError.Create($"Error creating array of duplicates: {ex.Message}", ex, ErrorCodes.HandErrorCode.Create("Pairs")));
private Result <Card[], ApplicationError> CombineCards(Card[] hand, Card cutCard)
=> Result.Try(() => hand.Append(cutCard).ToArray())
.MapOnFailure(ex => GameLogicError.Create($"Error combining hand and cut cards: {ex.Message}", ex, ErrorCodes.HandErrorCode.Create(ex.Message)));
private Result <int, ApplicationError> SumPairs(int[] duplicates)
=> Result.Try(() => duplicates.Sum(d => d * (d - 1)))
.MapOnFailure(ex => GameLogicError.Create($"Error summing points for pairs: {ex.Message}", ex, ErrorCodes.HandErrorCode.Create("Pairs")));
public Result <int, ApplicationError> Calculate(Card[] hand, Card cutCard)
=> Result.Try(() => hand.Where(c => c.Face == Faces.Jack && c.Suit == cutCard.Suit).Count())
.MapOnFailure(ex => GameLogicError.Create($"Error calculating Nobs points: {ex.Message}", ex, ErrorCodes.HandErrorCode.Create("Nobs")));
private Result <int, ApplicationError> CalculateCribFlush(Card[] cards)
=> Result.Try(() =>
cards.All(c => c.Suit == cards[0].Suit)
? cards.Length
: 0)
.MapOnFailure(ex => GameLogicError.Create($"Error calculating a flush in the crib", ex, ErrorCodes.HandErrorCode.Create("Flush")));
