chore: Update TikTok callback route to use new API endpoint

app.py

@@ -603,7 +603,10 @@ async def tiktok_callback(request: Request):
 
         # Exchange code for access token
         response = requests.post(
-            'https://www.tiktok.com/v2/auth/token/',
+            'https://open.tiktokapis.com/v2/oauth/token/',
+            headers={
+                'Content-Type': 'application/x-www-form-urlencoded'
+            },
             data={
                 'client_key': CLIENT_KEY,
                 'client_secret': CLIENT_SECRET,
@@ -613,25 +616,31 @@ async def tiktok_callback(request: Request):
             }
         )
 
-        # Print the raw response for debugging
-        print(f"Raw response text: {response.text}")
+        # Check for successful response
+        if response.status_code != 200:
+            raise HTTPException(status_code=response.status_code, detail="Failed to exchange code for token")
 
         # Try parsing the JSON response
         token_response = response.json()
 
+        # Check if there is an error in the response
         if "error" in token_response:
-            raise HTTPException(status_code=400, detail=token_response["error_description"])
+            raise HTTPException(status_code=400, detail=token_response.get("error_description", "Unknown error"))
+
+        access_token = token_response.get('access_token')
+        open_id = token_response.get('open_id')
 
-        access_token = token_response.get('data').get('access_token')
-        open_id = token_response.get('data').get('open_id')
+        # Log the access token and open_id for debugging purposes
+        print(f"Access token: {access_token}")
+        print(f"Open ID: {open_id}")
 
+        # Return a success message with the token details
         return {"message": "Authorization successful", "access_token": access_token, "open_id": open_id}
-    
+
     except Exception as e:
-        # Log the exception
+        # Log the exception for debugging purposes
         print(f"Exception occurred: {str(e)}")
         raise HTTPException(status_code=500, detail="Internal Server Error")
-
 @app.get("/generate_video")
 def generate_video():
     try: