switch to shared random for GenerateCheapGuid

Kyubey/ServiceController.cs

@@ -98,21 +98,26 @@ public class ServiceController : WebApiController
         if (userId is not null && view == -1 || userId is null) // ?????? this game makes no sense dude
         {
             var factor = view == -1 ? 0 : view;
-            Console.WriteLine($"factor={factor}");
-            
-            var globalRanking = JewelDbContext.Scores
-                .Find(e => e.GameMode == mode)
-                .OrderByDescending(e => e.Points)
-                .Skip(factor*view)
-                .Take(10)
-                .ToList();
-            
-            if (globalRanking.Any())
+            if (factor > 0 && JewelDbContext.Scores.Count() < 11)
             {
-                response = $"{factor}\n";
+                response = "";
+            }
+            else
+            {
+                var globalRanking = JewelDbContext.Scores
+                    .Find(e => e.GameMode == mode)
+                    .OrderByDescending(e => e.Points)
+                    .Skip(factor*view)
+                    .Take(10)
+                    .ToList();
+            
+                if (globalRanking.Any())
+                {
+                    response = $"{factor}\n";
+                }
+            
+                foreach (var score in globalRanking) response += score.ToString();
             }
-            
-            foreach (var score in globalRanking) response += score.ToString();
         } else // personal ranking
         {
             var personalRanking = JewelDbContext.Scores

Kyubey/Utils.cs

@@ -16,9 +16,8 @@ public class Utils
     // This game is wonderful and working on it is even more so
     public static string GenerateCheapGuid()
     {
-        var rng = new Random();
         var bytes = new byte[8];
-        rng.NextBytes(bytes);
+        Random.Shared.NextBytes(bytes);
         return Convert.ToHexStringLower(bytes);
     }
 }