Update app.py

app.py

@@ -75,15 +75,25 @@ def generate_empathetic_response(user_input, retrieved_question):
 # ✅ Function to detect disorders
 def detect_disorders(chat_history):
     """Detect psychiatric disorders from full chat history."""
-    full_chat_text = " ".join(chat_history)
-    text_embedding = similarity_model.encode([full_chat_text], convert_to_numpy=True)
-    distances, indices = index.search(text_embedding, 3)
+    if not chat_history:  # ✅ Handle empty chat history
+        return ["No input provided."]
 
-    if indices[0][0] == -1:
-        return ["No matching disorder found."]
+    full_chat_text = " ".join(chat_history).strip()
+    if not full_chat_text:  # ✅ Handle case where all messages are empty strings
+        return ["No meaningful text provided."]
+
+    try:
+        text_embedding = similarity_model.encode([full_chat_text], convert_to_numpy=True)
+        distances, indices = index.search(text_embedding, 3)
 
-    disorders = [recommendations_df["Disorder"].iloc[i] for i in indices[0]]
-    return disorders
+        if indices is None or indices[0][0] == -1:
+            return ["No matching disorder found."]
+
+        disorders = [recommendations_df["Disorder"].iloc[i] for i in indices[0]]
+        return disorders
+
+    except Exception as e:
+        return [f"Error detecting disorders: {str(e)}"]  # ✅ Catch unexpected errors
 
 # ✅ Function to get treatment recommendations
 def get_treatment(detected_disorders):