LeetCode to Google Drive Saver

Manifest V3 Chrome extension that watches LeetCode problem pages and uploads accepted solutions to Google Drive.

Files

• manifest.json - extension manifest and OAuth2 placeholder
• content.js - detects an accepted submission and extracts title, language, and source code
• background.js - authenticates with Google Drive and uploads the solution into LeetCode-Solutions

Google OAuth Setup

1. Create an OAuth client in Google Cloud Console for Chrome extension use.
2. Copy your OAuth client ID into manifest.json:

"oauth2": {
  "client_id": "YOUR_GOOGLE_OAUTH_CLIENT_ID.apps.googleusercontent.com",
  "scopes": ["https://www.googleapis.com/auth/drive"]
}

3. Make sure the OAuth client is allowed to request the Google Drive scope used by the extension.

Load Into Chrome

1. Open chrome://extensions/.
2. Enable Developer mode.
3. Click Load unpacked.
4. Select the d:\ChromeExtension folder.
5. Pin the extension if you want quick access.

Behavior

• The extension only runs on https://leetcode.com/problems/*.
• When an accepted submission appears, content.js extracts the problem title, the editor language, and the current source code.
• background.js requests a Google Drive token through chrome.identity.getAuthToken, creates the LeetCode-Solutions folder if needed, and uploads the code as a file such as Two-Sum.cpp.
• The content script opens a small status dialog while saving to Drive and while loading a saved solution so you can see that it is working.

Notes

• The extension uses the Google Drive scope so it can search for and create the dedicated folder.
• If you change the OAuth client ID, reload the extension from chrome://extensions/.