Algo-Vault is a dedicated revision tool for competitive programmers. It helps you save, organize, and review your LeetCode and CodeChef submissions using a Spaced Repetition System (SRS).

• Chrome Extension: Automatically captures your code, problem title, and tags when you submit a solution on LeetCode or CodeChef.
• Spaced Repetition Review: A dashboard that schedules problem reviews based on your performance (Again, Hard, Good, Easy) to maximize retention.
• Activity Heatmap: Visualizes your daily problem-solving consistency directly from your local database.
• Code Viewer: Syntax-highlighted view of your saved solutions (Java support enabled).
• Secure Storage: Local MongoDB database keeps your code private and accessible.

• Frontend: React, Vite, Tailwind CSS
• Backend: Node.js, Express, MongoDB, Mongoose
• Extension: Chrome Manifest V3

• Node.js installed.
• MongoDB installed and running locally.

cd server
npm install
npm start

Server runs on local port 5000.

cd client
npm install
npm run dev

Client runs on http://localhost:5173.

1. Open Chrome and go to chrome://extensions.
2. Enable Developer mode (top right).
3. Click Load unpacked.
4. Select the extension folder from this repository.

1. Save a Problem:

   • Solve a problem on LeetCode.
   • Click Submit.
   • The extension automatically sends the code to your local Algo-Vault.
   • Extension logs will confirm "Captured submission".

2. Review Problems:

   • Open the Dashboard at http://localhost:5173.
   • Check the Review Session card.
   • Click Reveal Solution to see your code.
   • Rate the problem (Again/Hard/Good/Easy) to schedule the next review.
   • Click Skip Session or Next Problem to cycle through due reviews.

Feel free to fork this repo and submit PRs for new features like:

• Support for more platforms (HackerRank, AtCoder).
• User Authentication.
• Advanced SRS settings.