Removed module projects because it can't work like that atm. Commented out package commands.

NadekoBot.Core/Modules/Gambling/DrawCommands.cs

@@ -0,0 +1,106 @@
+using Discord;
+using Discord.Commands;
+using NadekoBot.Extensions;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.IO;
+using System.Threading.Tasks;
+using NadekoBot.Common.Attributes;
+using NadekoBot.Modules.Gambling.Common;
+using Image = ImageSharp.Image;
+using ImageSharp;
+
+namespace NadekoBot.Modules.Gambling
+{
+    public partial class Gambling
+    {
+        [Group]
+        public class DrawCommands : NadekoSubmodule
+        {
+            private static readonly ConcurrentDictionary<IGuild, Cards> _allDecks = new ConcurrentDictionary<IGuild, Cards>();
+            private const string _cardsPath = "data/images/cards";
+
+            
+            private async Task<(Stream ImageStream, string ToSend)> InternalDraw(int num, ulong? guildId = null)
+            {
+                if (num < 1 || num > 10)
+                    throw new ArgumentOutOfRangeException(nameof(num));
+
+                Cards cards = guildId == null ? new Cards() : _allDecks.GetOrAdd(Context.Guild, (s) => new Cards());
+                var images = new List<Image<Rgba32>>();
+                var cardObjects = new List<Cards.Card>();
+                for (var i = 0; i < num; i++)
+                {
+                    if (cards.CardPool.Count == 0 && i != 0)
+                    {
+                        try
+                        {
+                            await ReplyErrorLocalized("no_more_cards").ConfigureAwait(false);
+                        }
+                        catch
+                        {
+                            // ignored
+                        }
+                        break;
+                    }
+                    var currentCard = cards.DrawACard();
+                    cardObjects.Add(currentCard);
+                    using (var stream = File.OpenRead(Path.Combine(_cardsPath, currentCard.ToString().ToLowerInvariant() + ".jpg").Replace(' ', '_')))
+                        images.Add(Image.Load(stream));
+                }
+                MemoryStream bitmapStream = new MemoryStream();
+                images.Merge().SaveAsPng(bitmapStream);
+                bitmapStream.Position = 0;
+
+                var toSend = $"{Context.User.Mention}";
+                if (cardObjects.Count == 5)
+                    toSend += $" drew `{Cards.GetHandValue(cardObjects)}`";
+
+                return (bitmapStream, toSend);
+            }
+
+            [NadekoCommand, Usage, Description, Aliases]
+            [RequireContext(ContextType.Guild)]
+            public async Task Draw(int num = 1)
+            {
+                if (num < 1)
+                    num = 1;
+                if (num > 10)
+                    num = 10;
+
+                var data = await InternalDraw(num, Context.Guild.Id).ConfigureAwait(false);
+                await Context.Channel.SendFileAsync(data.ImageStream, num + " cards.jpg", data.ToSend).ConfigureAwait(false);
+            }
+
+            [NadekoCommand, Usage, Description, Aliases]
+            public async Task DrawNew(int num = 1)
+            {
+                if (num < 1)
+                    num = 1;
+                if (num > 10)
+                    num = 10;
+
+                var data = await InternalDraw(num).ConfigureAwait(false);
+                await Context.Channel.SendFileAsync(data.ImageStream, num + " cards.jpg", data.ToSend).ConfigureAwait(false);
+            }
+
+            [NadekoCommand, Usage, Description, Aliases]
+            [RequireContext(ContextType.Guild)]
+            public async Task DeckShuffle()
+            {
+                //var channel = (ITextChannel)Context.Channel;
+
+                _allDecks.AddOrUpdate(Context.Guild,
+                        (g) => new Cards(),
+                        (g, c) =>
+                        {
+                            c.Restart();
+                            return c;
+                        });
+
+                await ReplyConfirmLocalized("deck_reshuffled").ConfigureAwait(false);
+            }
+        }
+    }
+}