🐛 Prevent Die ctor from making dice with no face

Sources/App/Program.cs

@@ -274,13 +274,17 @@ namespace App
                 Console.WriteLine("create a face with a number, or enter 'ok' if you're finished");
                 menuChoiceNewFaces = Console.ReadLine();
 
+                PreventEmptyDieCreation(ref menuChoiceNewFaces, faces.Count);
+
                 if (!menuChoiceNewFaces.Equals("ok") && int.TryParse(menuChoiceNewFaces, out int num))
                 {
                     faces.Add(new(num));
                 }
             }
 
-            die = new NumberDie(faces.ToArray());
+            NumberFace[] facesArr = faces.ToArray();
+
+            die = new NumberDie(facesArr[0], facesArr[1..]);
             return die;
         }
 
@@ -294,10 +298,15 @@ namespace App
             {
                 Console.WriteLine("create a face with an color name, or enter 'ok' if you're finished");
                 menuChoiceNewFaces = Console.ReadLine();
+
+                PreventEmptyDieCreation(ref menuChoiceNewFaces, faces.Count);
+
                 if (menuChoiceNewFaces != "ok") faces.Add(new(Color.FromName(menuChoiceNewFaces)));
             }
 
-            die = new ColorDie(faces.ToArray());
+            ColorFace[] facesArr = faces.ToArray();
+
+            die = new ColorDie(facesArr[0], facesArr[1..]);
             return die;
         }
 
@@ -312,6 +321,8 @@ namespace App
                 Console.WriteLine("create a face with an image uri, or enter 'ok' if you're finished");
                 menuChoiceNewFaces = Console.ReadLine();
 
+                PreventEmptyDieCreation(ref menuChoiceNewFaces, faces.Count);
+
                 if (menuChoiceNewFaces != "ok")
                 {
                     try
@@ -329,10 +340,23 @@ namespace App
                     }
                 }
             }
-            die = new ImageDie(faces.ToArray());
+
+            ImageFace[] facesArr = faces.ToArray();
+
+            die = new ImageDie(facesArr[0], facesArr[1..]);
             return die;
         }
 
+
+        private static void PreventEmptyDieCreation(ref string menuChoice, int count)
+        {
+            if (menuChoice.Equals("ok") && count == 0)
+            {
+                Console.WriteLine("create at least one valid face");
+                menuChoice = ""; // persiste en dehors du scope de cette fonction
+            }
+        }
+
         private static IEnumerable<Die> PrepareDice(MasterOfCeremonies masterOfCeremonies)
         {
             List<Die> result = new();

Sources/Data/Stub.cs

@@ -27,8 +27,8 @@ namespace Data
             NumberFace[] d6Faces = new NumberFace[] { new(1), new(2), new(3), new(4), new(5), new(6) };
 
             monopolyDice.Add(new NumberDie(new NumberFace(1), new NumberFace(1), new NumberFace(1), new NumberFace(1)));
-            monopolyDice.Add(new NumberDie(d6Faces));
-            monopolyDice.Add(new NumberDie(d6Faces));
+            monopolyDice.Add(new NumberDie(d6Faces[0], d6Faces[1..]));
+            monopolyDice.Add(new NumberDie(d6Faces[0], d6Faces[1..]));
 
             ColorFace[] colorFaces = new ColorFace[]
             {
@@ -40,7 +40,7 @@ namespace Data
                 new(Color.FromName("white"))
             };
 
-            monopolyDice.Add(new ColorDie(colorFaces));
+            monopolyDice.Add(new ColorDie(colorFaces[0], colorFaces[1..]));
 
             string rootPath = "https://unsplash.com/photos/";
 
@@ -52,7 +52,7 @@ namespace Data
                 new(new Uri(rootPath + "A_Ncbi-RH6s")),
             };
 
-            monopolyDice.Add(new ImageDie(imageFaces));
+            monopolyDice.Add(new ImageDie(imageFaces[0], imageFaces[1..]));
 
             NumberFace[] d20Faces = new NumberFace[] {
                 new(1), new(2), new(3), new(4), new(5),
@@ -61,7 +61,7 @@ namespace Data
                 new(16), new(17), new(18), new(19), new(20)
             };
 
-            dndDice.Add(new NumberDie(d20Faces));
+            dndDice.Add(new NumberDie(d20Faces[0], d20Faces[1..]));
 
             gr.DiceGroupManager.Add(new KeyValuePair<string, IEnumerable<Die>>(dndName, dndDice.AsEnumerable()));
             gr.DiceGroupManager.Add(new KeyValuePair<string, IEnumerable<Die>>(monopolyName, monopolyDice.AsEnumerable()));

Sources/Model/Dice/ColorDie.cs

@@ -5,9 +5,9 @@ namespace Model.Dice
 {
     public class ColorDie : HomogeneousDie<Color>
     {
-        public ColorDie(params ColorFace[] faces) : base(faces)
+        public ColorDie(ColorFace first, params ColorFace[] faces) 
+            : base(first, faces)
         {
-
         }
     }
 }

Sources/Model/Dice/Die.cs

@@ -13,9 +13,9 @@ namespace Model.Dice
 
         private readonly List<Face> faces = new();
 
-        protected Die(params Face[] faces)
+        protected Die(Face first, params Face[] faces)
         {
-            this.faces.AddRange(faces);
+            this.faces.AddRange(faces.Append(first));
         }
 
         public virtual Face GetRandomFace()

Sources/Model/Dice/HomogeneousDie.cs

@@ -4,7 +4,8 @@ namespace Model.Dice
 {
     public abstract class HomogeneousDie<T> : Die
     {
-        protected HomogeneousDie(params Face<T>[] faces) : base(faces)
+        protected HomogeneousDie(Face<T> first, params Face<T>[] faces) 
+            : base(first, faces)
         {
         }
 

Sources/Model/Dice/ImageDie.cs

@@ -5,7 +5,8 @@ namespace Model.Dice
 {
     public class ImageDie : HomogeneousDie<Uri>
     {
-        public ImageDie(params ImageFace[] faces) : base(faces)
+        public ImageDie(ImageFace first, params ImageFace[] faces) 
+            : base(first, faces)
         {
         }
     }

Sources/Model/Dice/NumberDie.cs

@@ -4,7 +4,8 @@ namespace Model.Dice
 {
     public class NumberDie : HomogeneousDie<int>
     {
-        public NumberDie(params NumberFace[] faces) : base(faces)
+        public NumberDie(NumberFace first, params NumberFace[] faces) 
+            : base(first, faces)
         {
         }
     }