async public Task <Deck> CreateNewShuffledDeckAsync(int deckCount)
{
var random = new Random();
var suits = new[] { "HEARTS", "SPADES", "CLUBS", "DIAMONDS" };
var values = new[] { "A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "JACK", "QUEEN", "KING" };
var cards = new Card[52 * deckCount];
var deck = new Deck {
DeckId = random.Next().ToString("X")
};
int newCardIndex = 0;
for (int _ = 0; _ < deckCount; _ += 1)
{
foreach (string suit in suits)
{
foreach (string value in values)
{
string code = value.Substring(0, 1) + suit.Substring(0, 1);
if (value == "10")
{
code = "0" + suit.Substring(0, 1);
}
cards[newCardIndex] = new Card
{
Deck = deck,
Value = value,
Suit = suit,
Code = code,
};
newCardIndex += 1;
}
}
}
// Fisher-Yates shuffle
for (int cardIndex = cards.Length - 1; cardIndex >= 0; cardIndex -= 1)
{
int swapIndex = random.Next(0, cardIndex);
Card card = cards[swapIndex];
cards[swapIndex] = cards[cardIndex];
cards[cardIndex] = card;
cards[cardIndex].Order = cardIndex;
cards[swapIndex].Order = swapIndex;
}
foreach (Card card in cards)
{
deck.Cards.Add(card);
}
using (var context = new DeckContext())
{
context.Decks.Add(deck);
await context.SaveChangesAsync();
}
return(deck);
}
/// <summary>
/// Shuffles the cards of a pile in a given deck.
/// </summary>
/// <param name="deckId">The ID of the deck.</param>
/// <param name="pileName">The name of the pile.</param>
/// <returns>True if the shuffle was successful; false otherwise.</returns>
public async Task <bool> ShufflePileAsync(string deckId, string pileName)
{
using (var context = new DeckContext())
{
var deck = await context.Decks
.Include(d => d.Cards)
.Include(d => d.Piles)
.SingleAsync(d => d.DeckId == deckId);
var piles = deck.Piles;
var pile = piles.Single(p => p.Name == pileName);
var cards = pile.Cards.ToList();
try
{
Shuffle(cards);
pile.Cards = cards;
await context.SaveChangesAsync();
return(true);
}
catch
{
return(false);
}
}
}
async public Task <Deck> DrawCardsAsync(string deckId, int numberToDraw)
{
using (var context = new DeckContext())
{
Deck deck = await context.Decks
.Include(x => x.Cards)
.SingleAsync(x => x.DeckId == deckId);
foreach (Card card in deck.Cards)
{
if (!card.Drawn)
{
card.Drawn = true;
numberToDraw -= 1;
}
if (numberToDraw == 0)
{
break;
}
}
await context.SaveChangesAsync();
return(deck);
}
}
/// <summary>
/// Returns a deck with the given ID.
/// </summary>
/// <param name="deckId">The ID of the deck.</param>
/// <returns>The deck.</returns>
public async Task <Deck> GetDeckAsync(string deckId)
{
using (var context = new DeckContext())
{
return(await context.Decks
.Include(d => d.Cards)
.Include(d => d.Piles)
.SingleAsync(d => d.DeckId == deckId));
}
}
/// <summary>
/// Puts a collection of cards of a given deck in a pile.
/// </summary>
/// <param name="deckId">The ID of the deck.</param>
/// <param name="pileName">The name of the pile.</param>
/// <param name="cardCodes">The codes of the cards to put in the pile.</param>
/// <returns>The updated deck.</returns>
public async Task <Deck> AddToPileAsync(string deckId, string pileName, string[] cardCodes)
{
using (var context = new DeckContext())
{
var deck = await context.Decks
.Include(d => d.Cards)
.Include(d => d.Piles)
.SingleAsync(d => d.DeckId == deckId);
// TODO Confirm that cards to add are all drawn
// I'm not sure how to best format these LINQ statements
if (!deck.Piles
.Select(p => p.Name)
.Contains(pileName))
{
deck.Piles.Add(new Pile()
{
Name = pileName,
DeckId = deck.Id
});
}
// I don't know if I can just modify the pileIds of each card without
// modifying all the piles in the deck.
//
// This will also break when a deck has multiple copies of the same card
// (e.g. when the CreateNewShuffledDeckAsync method is passed an int > 1)
// because I'm filtering by card code instead of card id.
//
// Perhaps this can be fixed if we require a "source" field in the request.
var cards = deck.Cards
.Where(c => cardCodes.Contains(c.Code))
.ToList();
cards.ForEach(c =>
{
if (c.PileId.HasValue)
{
deck.Piles
.Single(p => p.Id == c.PileId.Value)
.Cards
.Remove(c);
}
});
var pile = deck.Piles.Single(p => p.Name == pileName);
pile.Cards = pile.Cards.Concat(cards).ToList();
await context.SaveChangesAsync();
return(deck);
}
}
async public Task <Deck> GetDeck(string deckId)
{
using (var context = new DeckContext())
{
Deck deck = await context.Decks
.Include(x => x.Cards)
.Include(x => x.Piles)
.SingleAsync(x => x.DeckId == deckId);
return(deck);
}
}
async public Task <Deck> PutCardsInPile(string deckId, string pileName, List <string> cardCodes)
{
using (var context = new DeckContext())
{
Deck deck = await context.Decks
.Include(x => x.Cards)
.Include(x => x.Piles)
.SingleAsync(x => x.DeckId == deckId);
Pile pile = null;
foreach (Pile p in deck.Piles)
{
if (p.Name == pileName)
{
pile = p;
}
}
if (pile == null)
{
//create new pile
pile = new Pile()
{
Name = pileName,
DeckId = deck.Id,
Deck = deck
};
context.Piles.Add(pile);
context.SaveChanges();
pile = context.Piles
.Include(p => p.Cards)
.First(p => p.DeckId == deck.Id && p.Name == pileName);
}
foreach (Card card in deck.Cards)
{
foreach (string cardCode in cardCodes)
{
if (card.Code == cardCode)
{
card.PileId = pile.Id;
}
}
}
await context.SaveChangesAsync();
return(deck);
}
}
async public Task <Pile> AddCardToPileAsync(string deckId, string pileName, string cards)
{
string[] cardArr = cards.Split(',');
using (var context = new DeckContext())
{
Deck deck = await context.Decks
.Include(x => x.Cards)
.SingleAsync(x => x.DeckId.Equals(deckId));
Deck deckPiles = await context.Decks
.Include(x => x.Piles)
.SingleAsync(x => x.DeckId.Equals(deckId));
//Couldn't figure out how to do multiple includes so I made two
Pile pile;
try
{
pile = deckPiles.Piles.Single(x => x.Name.Equals(pileName) && x.DeckId == deckPiles.Id);
}
catch (Exception)
{
pile = new Pile();
pile.Deck = deckPiles;
pile.DeckId = deckPiles.Id;
pile.Name = pileName;
pile.Cards = new List <Card>();
deckPiles.Piles.Add(pile);
}
foreach (var card in cardArr)
{
Card Card = deck.Cards.Single(x => x.Code.Equals(card));
Card.Drawn = true; // we took it out so it's out of the deck
if (pile.Cards.Contains(Card))
{
continue; //small check so we won't put multiple instances of the same card in the pile
}
pile.Cards.Add(Card);
Card.Pile = pile;
}
await context.SaveChangesAsync();
return(pile);
}
}
/// <summary>
/// Draws a number of cards from a given deck.
/// </summary>
/// <param name="deckId">The ID of the deck.</param>
/// <param name="numCards">The number of cards to draw.</param>
/// <returns>The updated deck.</returns>
public async Task <Deck> DrawCardsAsync(string deckId, int numCards)
{
using (var context = new DeckContext())
{
var deck = await context.Decks
.Include(d => d.Cards)
.SingleAsync(d => d.DeckId == deckId);
// TODO handle the case when there are not enough cards to draw
var notDrawn = deck.Cards
.Where(c => !c.Drawn)
.Take(numCards)
.ToList();
notDrawn.ForEach(c => c.Drawn = !c.Drawn);
await context.SaveChangesAsync();
return(deck);
}
}
async public Task <Pile> PileShuffleAsync(string deckId, string pileName)
{
using (var context = new DeckContext())
{
Pile pile = await context.Piles
.Include(x => x.Cards)
.SingleAsync(x => x.Name.Equals(pileName));
//no try catch this time because if you try to shuffle a pile that doesn't exist you deserve to have the API scream at you
/*Pile pile = deckPiles.Piles.Single(x => x.Name.Equals(pileName) && x.DeckId == deckPiles.Id);*/
var rnd = new Random();
var shuffledPile = pile.Cards.OrderBy(x => rnd.Next()).ToList();
pile.Cards = shuffledPile;
await context.SaveChangesAsync();
return(pile);
}
}
