updated fallback logic

app/api/endpoints/gemini.py

@@ -36,11 +36,28 @@ def get_gemini_client():
 @limiter.limit(settings.RATE_LIMIT)
 async def gemini_chat(
     request: Request,
-    chat_data: LLMRequest,
     api_key: str = Depends(get_api_key),
     module: Module = Depends(get_current_module),
     db: Session = Depends(get_db)
 ):
+    # Handle text/plain as JSON (fallback for CORS "Simple Requests")
+    content_type = request.headers.get("Content-Type", "")
+    if "text/plain" in content_type:
+        try:
+            body = await request.body()
+            import json
+            data = json.loads(body)
+            chat_data = LLMRequest(**data)
+        except Exception as e:
+            return {"status": "error", "detail": f"Failed to parse text/plain as JSON: {str(e)}"}
+    else:
+        # Standard JSON parsing
+        try:
+            data = await request.json()
+            chat_data = LLMRequest(**data)
+        except Exception as e:
+            return {"status": "error", "detail": f"Invalid JSON: {str(e)}"}
+
     client = get_gemini_client()
     
     try: