Update app.py

app.py

@@ -14,34 +14,41 @@ class GeminiBot:
 
     async def start(self):
         self.playwright = await async_playwright().start()
-        # Launch browser once. 
-        self.browser = await self.playwright.chromium.launch(headless=True, args=["--no-sandbox"])
+        # Launch browser with flags to help avoid detection
+        self.browser = await self.playwright.chromium.launch(
+            headless=True, 
+            args=["--no-sandbox", "--disable-blink-features=AutomationControlled"]
+        )
         print("--- Gemini Bot (Stateless) Ready ---")
 
     async def process_chat(self, message: str):
-        # Every request gets a fresh, isolated, ephemeral context
-        context = await self.browser.new_context()
+        # Create context with a realistic User Agent
+        context = await self.browser.new_context(
+            user_agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
+        )
         page = await context.new_page()
         
         try:
-            # BLOCK assets to ensure faster loading
+            # BLOCK unnecessary assets to speed up loading
             await page.route("**/*", lambda route: route.abort() if route.request.resource_type in 
                              ["image", "font", "media", "stylesheet"] else route.continue_())
             
-            await page.goto("https://gemini.google.com", wait_until="domcontentloaded")
+            # Navigate and wait for network idle to ensure JS loads
+            await page.goto("https://gemini.google.com", wait_until="networkidle")
             
-            # Interact
-            chat_box = page.locator("div[contenteditable='true']").first
+            # Interact with the chat box
+            chat_box = page.locator("div[contenteditable='true']")
+            await chat_box.wait_for(timeout=20000)
             await chat_box.fill(message)
             await page.keyboard.press("Enter")
             
-            # Wait for response
+            # Wait for the response container
             await page.wait_for_selector("message-content", timeout=45000)
             
             # Extract Text
             current_text = await page.evaluate("""() => {
                 const msgs = document.querySelectorAll('message-content');
-                return msgs.length > 0 ? msgs[msgs.length - 1].innerText : "";
+                return msgs.length > 0 ? msgs[msgs.length - 1].innerText : "Error: No message content found";
             }""")
             
             return {"text": current_text}
@@ -75,6 +82,7 @@ def health_check():
 
 @app.post("/chat")
 async def chat_api(request: ChatRequest):
+    # This now handles the Pydantic model correctly, resolving 422 errors
     return await bot.process_chat(request.message)
 
 if __name__ == "__main__":