Remove interface, replace with CLI

Program.cs

@@ -1,14 +1,55 @@
 using System;
-using System.Collections.Generic;
+using CommandLine;
 
 namespace tarot{
     class Program{
-        static void Main(string[] args){
+        [Verb("get", HelpText = "Retrieve cards from the deck.")]
+        public class GetOptions{
+            [Value(0, MetaName = "amount", MetaValue = "int", Default = 1, HelpText = "Amount of cards to retrieve.")]
+            public uint Amount{get; set;}
+        }
+
+        [Verb("shuffle", HelpText = "Shuffle the deck")]
+        public class ShuffleOptions{
+            [Value(0, MetaName = "type", MetaValue = "string", Default = "riffle", HelpText = "What shuffle to perform.")]
+            public string Type{get; set;}
+        }
+
+        static int Main(string[] args){
+            Type[] types = {typeof(ShuffleOptions), typeof(GetOptions)};
+
             Deck deck = new Deck();
             deck.AddToDeck(Utilities.DeserializeMajorArcana(@"Data/base_majorarcana.json"));
             deck.AddToDeck(Utilities.DeserializeMinorArcana(@"Data/base_minorarcana.json"));
-            MainUI ui = new MainUI(deck);
-            ui.Show();
-        }       
+
+            return Parser.Default.ParseArguments(args, types)
+            .MapResult(
+            (GetOptions options) => {
+                options.Amount = Math.Max(1, options.Amount);
+                for (int i = 0; i < options.Amount; i++){
+                    Console.WriteLine(deck.RequeueCard().ToString());
+                }
+                return 0;
+            },
+            (ShuffleOptions options) => {
+                switch(options.Type.ToLower()){
+                    case "riffle":
+                        deck.ShuffleDeck(ShuffleType.Riffle);
+                        break;
+                    case "overhand":
+                        deck.ShuffleDeck(ShuffleType.Overhand);
+                        break;
+                    case "fisheryates" or "perfect":
+                        deck.ShuffleDeck(ShuffleType.FisherYates);
+                        break;
+                    default:
+                        Console.WriteLine("Unkown shuffletype: {0}", options.Type.ToLower());
+                        return 1;
+                }
+                Console.WriteLine("Performed {0} shuffle", options.Type.ToLower());
+                return 0;
+            },
+            errors => 1);
+        }
     }   
 }

tarot.csproj

@@ -6,6 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="CommandLineParser" Version="2.8.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>