/// <summary>
/// Compares the full houses.
/// </summary>
/// <param name="currentWinners">The current winners.</param>
/// <param name="challenger">The challenger.</param>
/// <returns>List<PokerHandDto>.</returns>
private List <PokerHandDto> CompareTwoPairs(List <PokerHandDto> currentWinners, PokerHandDto challenger)
{
//Card Freq list to query
//Hand 1
List <Card> winnersCards = GetCardListFromHand(currentWinners[0]);
List <CardFrequency> winnersCardRankList = new CardFrequencyList().GetCardFrequencyList(winnersCards);
//Hand 2
List <Card> challengerCards = GetCardListFromHand(challenger);
List <CardFrequency> challengerCardRankList = new CardFrequencyList().GetCardFrequencyList(challengerCards);
var winnersTwoPairs = winnersCardRankList.Where(cr => cr.Frequency == 2).OrderByDescending(c => c.Rank).ToList();
var challengerTwoPairs = challengerCardRankList.Where(cr => cr.Frequency == 2).OrderByDescending(c => c.Rank).ToList();
int i = 0;
while (i < 2)
{
if (winnersTwoPairs[i].Rank > challengerTwoPairs[i].Rank)
{
return(currentWinners);
}
else if (winnersTwoPairs[i].Rank < challengerTwoPairs[i].Rank)
{
return(new List <PokerHandDto> {
challenger
});
}
i++;
}
//Would only be possible to get here in multi deck games. One full house should always be stronger with one deck.
int winnersKickRank = winnersCardRankList.Where(cr => cr.Frequency == 1).FirstOrDefault().Rank;
int challengerKickerRank = challengerCardRankList.Where(cr => cr.Frequency == 1).FirstOrDefault().Rank;
//compare the strength of pairs
if (winnersKickRank > challengerKickerRank)
{
return(currentWinners);
}
else if (winnersKickRank < challengerKickerRank)
{
return(new List <PokerHandDto> {
challenger
});
}
//hands are the same in terms of rank. Pot will be chopped.
currentWinners.Add(challenger);
return(currentWinners);
}
/// <summary>
/// Compares the rank repated hand. (Pair, trips, quads)
/// </summary>
/// <param name="currentWinners">The current winners.</param>
/// <param name="challenger">The challenger.</param>
/// <param name="numberOfRankRepeats">The number of rank repeats.</param>
/// <returns>List<PokerHandDto>.</returns>
private List <PokerHandDto> CompareRankRepatedHand(List <PokerHandDto> currentWinners, PokerHandDto challenger, int numberOfRankRepeats)
{
//Card Freq list to query
//Hand 1
List <Card> currentWinnersCards = GetCardListFromHand(currentWinners[0]);
List <CardFrequency> currentWinnersCardRankList = new CardFrequencyList().GetCardFrequencyList(currentWinnersCards);
//Hand 2
List <Card> challengersCards = GetCardListFromHand(challenger);
List <CardFrequency> challengerscardRankList = new CardFrequencyList().GetCardFrequencyList(challengersCards);
int currentWinnerscardRank = currentWinnersCardRankList.Where(cr => cr.Frequency == numberOfRankRepeats).FirstOrDefault().Rank;
int challengerscardRank = challengerscardRankList.Where(cr => cr.Frequency == numberOfRankRepeats).FirstOrDefault().Rank;
//compare the strength of trips
if (currentWinnerscardRank > challengerscardRank)
{
return(currentWinners);
}
else if (currentWinnerscardRank < challengerscardRank)
{
return(new List <PokerHandDto> {
challenger
});
}
//repeated rank cards are the same only possible to get here for duos
var kickers1 = currentWinnersCardRankList.Where(cr => cr.Frequency == 1).OrderByDescending(c => c.Rank).ToList();
var kickers2 = challengerscardRankList.Where(cr => cr.Frequency == 1).OrderByDescending(c => c.Rank).ToList();
//repeated cards are the same so kickers will be examined
for (int i = 0; i < kickers1.Count; i++)
{
if (kickers1[i].Rank > kickers2[i].Rank)
{
return(currentWinners);
}
else if (kickers1[i].Rank < kickers2[i].Rank)
{
return(new List <PokerHandDto> {
challenger
});
}
}
//hands are the same in terms of rank. Pot will be chopped.
currentWinners.Add(challenger);
return(currentWinners);
}
/// <summary>
/// Compares the full houses.
/// </summary>
/// <param name="currentWinners">The current winners.</param>
/// <param name="challenger">The challenger.</param>
/// <returns>List<PokerHandDto>.</returns>
private List <PokerHandDto> CompareFullHouse(List <PokerHandDto> currentWinners, PokerHandDto challenger)
{
//Card Freq list to query
//Hand 1
List <Card> cards1 = GetCardListFromHand(currentWinners[0]);
List <CardFrequency> cardRankList1 = new CardFrequencyList().GetCardFrequencyList(cards1);
//Hand 2
List <Card> cards2 = GetCardListFromHand(challenger);
List <CardFrequency> cardRankList2 = new CardFrequencyList().GetCardFrequencyList(cards2);
int currentWinnersTripsRank = cardRankList1.Where(cr => cr.Frequency == 3).FirstOrDefault().Rank;
int challengerTripsRank = cardRankList2.Where(cr => cr.Frequency == 3).FirstOrDefault().Rank;
if (currentWinnersTripsRank > challengerTripsRank)
{
return(currentWinners);
}
else if (currentWinnersTripsRank < challengerTripsRank)
{
return(new List <PokerHandDto> {
challenger
});
}
//Would only be possible to get here in multi deck games. One full house should always be stronger with one deck.
int currentWinnersPairRank = cardRankList1.Where(cr => cr.Frequency == 2).FirstOrDefault().Rank;
int challengerPairRank = cardRankList1.Where(cr => cr.Frequency == 2).FirstOrDefault().Rank;
//compare the strength of pairs
if (currentWinnersPairRank > challengerPairRank)
{
return(currentWinners);
}
else if (currentWinnersPairRank < challengerPairRank)
{
return(new List <PokerHandDto> {
challenger
});
}
//hands are the same in terms of rank. Pot will be chopped.
currentWinners.Add(challenger);
return(currentWinners);
}
/// <summary>
/// Gets the type of the hand.
/// </summary>
/// <param name="hand">The hand.</param>
/// <returns>HandType.</returns>
/// <exception cref="ArgumentNullException">Provided poker hand is null.</exception>
public HandType GetHandType(PokerHand hand)
{
//null check
if (hand == null)
{
throw new ArgumentNullException(nameof(hand));
}
List <Card> cardsInHand = GetListOfCardsFromHand(hand);
//check if hand is Straight
bool isHandStraight = IsHandStraight(cardsInHand);
//check if hand is flush
bool isHandFlush = IsHandFlush(cardsInHand);
//check is hand straight flush
if (isHandStraight && isHandFlush)
{
return(_handTypes.GetHandTypeByTypeName("Straight Flush"));
}
//return if flush
if (isHandFlush)
{
return(_handTypes.GetHandTypeByTypeName("Flush"));
}
//return if straight
if (isHandStraight)
{
return(_handTypes.GetHandTypeByTypeName("Straight"));
}
//Get list of card frequencies
List <CardFrequency> repeatedHandRankList = new CardFrequencyList().GetCardFrequencyList(cardsInHand);
//check for quads
var quads = repeatedHandRankList.Where(cr => cr.Frequency == 4).FirstOrDefault();
if (quads != null)
{
return(_handTypes.GetHandTypeByTypeName("Four of a Kind"));
}
//check for full house
var trips = repeatedHandRankList.Where(cr => cr.Frequency == 3).FirstOrDefault();
if (trips != null)
{
//check for full house
var pairNeededForBoat = repeatedHandRankList.Where(cr => cr.Frequency == 2).FirstOrDefault();
if (pairNeededForBoat != null)
{
return(_handTypes.GetHandTypeByTypeName("Full House"));
}
}
//check for trips
if (trips != null)
{
return(_handTypes.GetHandTypeByTypeName("Three of a Kind"));
}
//check for two pair
var pairs = repeatedHandRankList.Where(cr => cr.Frequency == 2);
if (pairs.Any())
{
if (pairs.Count() == 2)
{
return(_handTypes.GetHandTypeByTypeName("Two Pair"));
}
//must be pair
return(_handTypes.GetHandTypeByTypeName("Pair"));
}
//With all other options exausted hand must be a high card
return(_handTypes.GetHandTypeByTypeName("High Card"));
}