Create utils.py

utils.py

@@ -0,0 +1,18 @@
+import json
+import os
+from datetime import datetime
+
+def detect_language(text: str) -> str:
+    if any(char in 'áéíóúñÁÉÍÓÚÑ¿¡' for char in text):
+        return "es"
+    return "en"
+
+def save_history(history, filename="chat_history.json"):
+    with open(filename, "w", encoding="utf-8") as f:
+        json.dump(history, f, ensure_ascii=False, indent=2)
+
+def load_history(filename="chat_history.json"):
+    if os.path.exists(filename):
+        with open(filename, "r", encoding="utf-8") as f:
+            return json.load(f)
+    return []