deck shuffling and rooms reset

Controllers/RoomController.cs

@@ -51,4 +51,11 @@ public class RoomController : ControllerBase
         var id = _roomManager.CreateRoom();
         return Ok(id);
     }
+    
+    [HttpDelete]
+    public IActionResult Delete()
+    {
+        _roomManager.RemoveAllRooms();
+        return NoContent();
+    }
 }

Mau/Deck.cs

@@ -14,7 +14,7 @@ public class Deck
                 UnusedDeck.Add(new Card(cardType, cardValue));
             }
         }
-        UnusedDeck = UnusedDeck.OrderBy(x => Guid.NewGuid()).ToList();
+        ShuffleDeck();
     }
     
     public List<Card> GetUnusedDeck()
@@ -24,6 +24,7 @@ public class Deck
     
     public Card DrawCard()
     {
+        if (UnusedDeck.Count == 0) ReshuffleDeck();
         var card = UnusedDeck[0];
         UnusedDeck.RemoveAt(0);
         return card;
@@ -43,4 +44,16 @@ public class Deck
     {
         UsedDeck.Add(card);
     }
+
+    private void ReshuffleDeck()
+    {
+        UnusedDeck.AddRange(UsedDeck);
+        UsedDeck.Clear();
+        ShuffleDeck();
+    }
+
+    private void ShuffleDeck()
+    {
+        UnusedDeck = UnusedDeck.OrderBy(x => Guid.NewGuid()).ToList();
+    }
 }

Websockets/RoomManager.cs

@@ -31,6 +31,11 @@ public class RoomManager : IRoomManager
     {
         return Rooms.ContainsKey(roomId);
     }
+    
+    public void RemoveAllRooms()
+    {
+        Rooms.Clear();
+    }
 }
 
 public interface IRoomManager
@@ -40,4 +45,5 @@ public interface IRoomManager
     public List<string> GetAllRooms();
     public void RemoveRoom(string roomId);
     public bool RoomExists(string roomId);
+    public void RemoveAllRooms();
 }