Using the newest discord.net , fixes, improvements

If you draw 5 cards now, you get a hand value.

NadekoBot/Classes/Cards.cs

@@ -20,6 +20,9 @@ public class Cards
         { 13, "King" },
     };
 
+    private static Dictionary<string, Func<List<Card>, bool>> handValues;
+
+
     public enum CARD_SUIT
     {
         Spades = 1,
@@ -28,7 +31,7 @@ public class Cards
         Clubs = 4
     }
 
-    public class Card
+    public class Card : IComparable
     {
         public CARD_SUIT suit;
 		public int number;
@@ -63,6 +66,13 @@ public class Cards
         {
             return cardNames[number] + " Of " + suit;
         }
+
+        public int CompareTo(object obj)
+        {
+            if (!(obj is Card)) return 0;
+            var c = (Card)obj;
+            return this.number - c.number;
+        }
     }
 
     private List<Card> cardPool;
@@ -79,6 +89,7 @@ public class Cards
     {
         cardPool = new List<Card>(52);
         RefillPool();
+        InitHandValues();
     }
     /// <summary>
     /// Restart the game of blackjack. It will only refill the pool for now. Probably wont be used, unless you want to have only 1 bjg running at one time,
@@ -116,8 +127,8 @@ public class Cards
     /// <returns>A card from the pool</returns>
     public Card DrawACard()
     {
-        if (CardPool.Count > 0)
-        {
+        if (CardPool.Count == 0)
+            Restart();
         //you can either do this if your deck is not shuffled
         Random r = new Random((int)DateTime.Now.Ticks);
         int num = r.Next(0, cardPool.Count);
@@ -132,13 +143,6 @@ public class Cards
         return c;
         */
     }
-        else {
-
-            //for now return null
-            Restart();
-            return null;
-        }
-    }
     /// <summary>
     /// Shuffles the deck. Use this if you want to take cards from the top of the deck, instead of randomly. See DrawACard method.
     /// </summary>
@@ -149,7 +153,77 @@ public class Cards
             cardPool.OrderBy(x => r.Next());
         }
     }
-    //public override string ToString() => string.Join("", cardPool.Select(c => c.ToString())) + Environment.NewLine;
     public override string ToString() => string.Join("", cardPool.Select(c => c.ToString())) + Environment.NewLine;
+
+    public void InitHandValues() {
+        Func<List<Card>, bool> hasPair =
+                              cards => cards.GroupBy(card => card.number)
+                                            .Count(group => group.Count() == 2) == 1;
+        Func<List<Card>, bool> isPair =
+                              cards => cards.GroupBy(card => card.number)
+                                            .Count(group => group.Count() == 3) == 0
+                                       && hasPair(cards);
+
+        Func<List<Card>, bool> isTwoPair =
+                              cards => cards.GroupBy(card => card.number)
+                                            .Count(group => group.Count() >= 2) == 2;
+
+        Func<List<Card>, bool> isStraight =
+                              cards => cards.GroupBy(card => card.number)
+                                            .Count() == cards.Count()
+                                       && cards.Max(card => (int)card.number)
+                                        - cards.Min(card => (int)card.number) == 4;
+
+        Func<List<Card>, bool> hasThreeOfKind =
+                              cards => cards.GroupBy(card => card.number)
+                                            .Any(group => group.Count() == 3);
+
+        Func<List<Card>, bool> isThreeOfKind =
+                              cards => hasThreeOfKind(cards) && !hasPair(cards);
+
+        Func<List<Card>, bool> isFlush =
+                              cards => cards.GroupBy(card => card.suit).Count() == 1;
+
+        Func<List<Card>, bool> isFourOfKind =
+                              cards => cards.GroupBy(card => card.number)
+                                            .Any(group => group.Count() == 4);
+
+        Func<List<Card>, bool> isFullHouse =
+                              cards => hasPair(cards) && hasThreeOfKind(cards);
+
+        Func<List<Card>, bool> hasStraightFlush =
+                              cards => isFlush(cards) && isStraight(cards);
+
+        Func<List<Card>, bool> isRoyalFlush =
+                              cards => cards.Min(card => (int)card.number) == 10
+                                       && hasStraightFlush(cards);
+
+        Func<List<Card>, bool> isStraightFlush =
+                              cards => hasStraightFlush(cards) && !isRoyalFlush(cards);
+
+        handValues = new Dictionary<string, Func<List<Card>, bool>>
+                     {
+                         { "A Pair", isPair },
+                         { "Two Pairs", isTwoPair },
+                         { "Three Of A Kind", isThreeOfKind },
+                         { "Straight", isStraight },
+                         { "Flush", isFlush },
+                         { "Full House", isFullHouse },
+                         { "Four Of A Kind", isFourOfKind },
+                         { "Straight Flush", isStraightFlush },
+                         { "Royal Flush", isRoyalFlush }
+                     };
+    }
+
+    public static string GetHandValue(List<Card> cards)
+    {
+        foreach (var KVP in handValues)
+        {
+            if (KVP.Value(cards)) {
+                return KVP.Key;
+            }
+        }
+        return "High card "+cards.Max().GetName();
+    }
 }
 

NadekoBot/Classes/ImageHandler.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Drawing;
 using System.Drawing.Imaging;
 using System.IO;
@@ -13,10 +14,11 @@ namespace NadekoBot
         /// </summary>
         /// <param name="images">The Images you want to merge.</param>
         /// <returns>Merged bitmap</returns>
-        public static Bitmap MergeImages(Image[] images)
+        public static Bitmap MergeImages(IEnumerable<Image> images)
         {
+            if (images.Count() == 0) return null;
             int width = images.Sum(i => i.Width);
-            int height = images[0].Height;
+            int height = images.First().Height;
             Bitmap bitmap = new Bitmap(width, height);
             var r = new Random();
             int offsetx = 0;

NadekoBot/Commands/DrawCommand.cs

@@ -3,6 +3,7 @@ using System.Threading.Tasks;
 using Discord.Commands;
 using System.Drawing;
 using System.Drawing.Imaging;
+using System.Collections.Generic;
 
 namespace NadekoBot
 {
@@ -17,8 +18,8 @@ namespace NadekoBot
             {
                 if (cards == null)
                 {
+                    await e.Send("Shuffling cards...");
                     cards = new Cards();
-                    await e.Send( "Shuffling cards...");
                 }
                 
                 try
@@ -33,17 +34,24 @@ namespace NadekoBot
                     if (num > 5)
                         num = 5;
 
-                    Image[] images = new Image[num];
+                    List<Image> images = new List<Image>();
+                    List<Cards.Card> cardObjects = new List<Cards.Card>();
                     for (int i = 0; i < num; i++)
                     {
-                        if (cards.CardPool.Count == 0)
+                        if (cards.CardPool.Count == 0 && i!= 0)
                         {
-                            await e.Send( "No more cards in a deck...\nGetting a new deck...\nShuffling cards...");
+                            await e.Send( "No more cards in a deck.");
+                            break;
                         }
-                        images[i] = Image.FromFile(cards.DrawACard().Path);
+                        var currentCard = cards.DrawACard();
+                        cardObjects.Add(currentCard);
+                        images.Add(Image.FromFile(currentCard.Path));
                     }
                     Bitmap bitmap = ImageHandler.MergeImages(images);
-                    await client.SendFile(e.Channel, num+" cards.jpg",ImageHandler.ImageToStream(bitmap,ImageFormat.Jpeg));
+                    await client.SendFile(e.Channel, images.Count+" cards.jpg",ImageHandler.ImageToStream(bitmap, ImageFormat.Jpeg));
+                    if (cardObjects.Count == 5) {
+                        await e.Send(Cards.GetHandValue(cardObjects));
+                    }
                 }
                 catch (Exception ex) {
                     Console.WriteLine("Error drawing (a) card(s) "+ex.ToString());

NadekoBot/Modules/Conversations.cs

@@ -46,7 +46,7 @@ namespace NadekoBot.Modules
                     .Description("Nadeko replies with /o/")
                     .Do(async e =>
                     {
-                        await e.Send( e.User.Mention + "/o/");
+                        await e.Send(e.User.Mention + "/o/");
                     });
 
                 cgb.CreateCommand("/o/")