first commit

2026-09-28 11:44:26 +05:30
parent 721743ae6b
commit bffc9b1686
424 changed files with 46474 additions and 0 deletions
@@ -0,0 +1,47 @@
+namespace Fitness_core_BE.AI
+{
+    public class ModificationGuard
+    {
+        private static readonly string[] AllowedKeywords =
+    {
+        "replace",
+        "remove",
+        "allergy",
+        "change",
+        "vegetarian",
+        "calorie",
+        "protein",
+        "carb",
+        "fat",
+        "meal",
+        "ingredient"
+    };
+
+        private static readonly string[] BlockedPatterns =
+        {
+        "ignore previous instructions",
+        "system prompt",
+        "act as",
+        "bypass",
+        "developer mode",
+        "jailbreak"
+    };
+
+        public void Validate(string message)
+        {
+            if (string.IsNullOrWhiteSpace(message))
+                throw new Exception("Modification cannot be empty.");
+
+            if (message.Length > 500)
+                throw new Exception("Modification too long.");
+
+            var lower = message.ToLower();
+
+            if (BlockedPatterns.Any(p => lower.Contains(p)))
+                throw new Exception("Invalid modification request.");
+
+            //if (!AllowedKeywords.Any(k => lower.Contains(k)))
+            //    throw new Exception("Only meal plan modifications are allowed.");
+        }
+    }
+}