ground up refactor!

Keygen/KeygenProduct.cs

@@ -0,0 +1,35 @@
+using System.Collections.Generic;
+
+namespace FrappeMocha.Keygen
+{
+    public class KeygenProduct
+    {
+        public LicenseTypes Licence;
+        public string Description;
+
+        public KeygenProduct(LicenseTypes licence, string description, string platform)
+        {
+            Licence = licence;
+            Description = description + " for " + platform;
+        }
+
+        public override string ToString()
+        {
+            return Description;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is KeygenProduct product && Description == product.Description || 
+                   obj is string description && description == Description;
+        }
+
+        public override int GetHashCode()
+        {
+            var hashCode = -1651123971;
+            hashCode = hashCode * -1521134295 + Licence.GetHashCode();
+            hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(Description);
+            return hashCode;
+        }
+    }
+}