Update app.py

app.py

@@ -177,29 +177,40 @@ def stream_chat(prompt: str, history=None):
 
     messages.append({"role": "user", "content": prompt})
 
-    payload = {
-        "model": "moonshotai/kimi-k2-instruct-0905",
-        "messages": messages,
-        "temperature": 0.7,
-        "max_tokens": 4188,
-        "stream": True,
-    }
+    # Default model
+    primary_model = "moonshotai/kimi-k2-instruct-0905"
+    fallback_model = "openai/gpt-oss-120b"
 
     last_error = "All Groq API keys failed."
 
     for index, api_key in enumerate(GROQ_CHAT_KEYS, start=1):
-        print(f"[CHAT-DEBUG] 🔑 Trying GROQ key #{index}")
+        print(f"[CHAT-DEBUG] 🔑 Trying GROQ KEY #{index}")
+
+        # Jika key kedua → pakai model fallback
+        model_to_use = fallback_model if index == 2 else primary_model
+
+        payload = {
+            "model": model_to_use,
+            "messages": messages,
+            "temperature": 0.7,
+            "max_tokens": 4500,
+            "stream": True,
+        }
 
         headers = {"Authorization": f"Bearer {api_key}"}
 
         try:
             response = requests.post(
-                GROQ_URL_CHAT, headers=headers, json=payload,
-                stream=True, timeout=120
+                GROQ_URL_CHAT,
+                headers=headers,
+                json=payload,
+                stream=True,
+                timeout=120
             )
             response.raise_for_status()
 
-            # STREAM MODE
+            print(f"[CHAT-DEBUG] 🔗 Connected. Using model: {model_to_use}")
+
             for line in response.iter_lines():
                 if not line:
                     continue
@@ -210,7 +221,6 @@ def stream_chat(prompt: str, history=None):
                     chunk = line[6:]
                     if chunk == "[DONE]":
                         break
-
                     try:
                         out = json.loads(chunk)["choices"][0]["delta"].get("content", "")
                         if out:
@@ -218,25 +228,24 @@ def stream_chat(prompt: str, history=None):
                     except:
                         continue
 
-            print(f"[CHAT-DEBUG] ✅ Key #{index} Success.")
+            print(f"[CHAT-DEBUG] ✅ Key #{index} SUCCESS.")
             return
 
         except requests.exceptions.HTTPError as e:
             try:
-                detail = json.loads(e.response.text).get("error", {}).get("message", "Unknown HTTP error")
+                detail = json.loads(e.response.text).get("error", {}).get("message", "Unknown")
             except:
                 detail = e.response.text
 
-            last_error = f"GROQ key #{index} failed (HTTP {e.response.status_code}): {detail}"
+            last_error = f"Key #{index} failed (HTTP {e.response.status_code}): {detail}"
             print(f"[CHAT-DEBUG] ❌ {last_error}")
 
         except requests.exceptions.RequestException as e:
-            last_error = f"GROQ key #{index} connection failed: {e}"
+            last_error = f"Key #{index} connection failed: {e}"
             print(f"[CHAT-DEBUG] ❌ {last_error}")
 
-    # Semua key gagal
-    print("[CHAT-DEBUG] 🛑 No working API keys.")
-    yield f"Maaf, server tidak bisa memproses permintaanmu saat ini. {last_error}"
+    print("[CHAT-DEBUG] 🛑 All keys failed.")
+    yield f"Sorry, error coming!. {last_error}"
         
 # =========================
 # 🚀 Chat Endpoint (Text + Voice)