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This project provides a working Node.js API to interact with LeetCode's public GraphQL API, focusing on fetching submission calendars and other user statistics. The API simplifies querying LeetCode's data by providing structured endpoints.

• Fetch user profile information from LeetCode
• Retrieve submission statistics and calendar data
• Simplified GraphQL querying through a RESTful API

• Node.js
• Express.js
• GraphQL
• Fetch API

1. Clone the repository:

   git clone https://github.com/faisal-shohag/leetcode_api.git

2. Navigate to the project directory:

   cd leetcode_api

3. Install the dependencies:

   npm install

1. Start the server:

   node index.js

2. Access the API at http://localhost:3000/yourLeetcodeUsername

• GET /:username - Fetches the LeetCode profile and submission data for the specified username.

{
 "totalSolved": 43,
 "totalSubmissions": [
 {
 "difficulty": "All",
 "count": 58,
 "submissions": 116
 },
 {
 "difficulty": "Easy",
 "count": 15,
 "submissions": 34
 },
 {
 "difficulty": "Medium",
 "count": 33,
 "submissions": 54
 },
 {
 "difficulty": "Hard",
 "count": 10,
 "submissions": 27
 }
 ],
 "totalQuestions": 2738,
 "easySolved": 12,
 "totalEasy": 686,
 "mediumSolved": 21,
 "totalMedium": 1449,
 "hardSolved": 10,
 "totalHard": 603,
 "ranking": 1139392,
 "contributionPoint": 217,
 "reputation": 28067,
 "submissionCalendar": {
 "1664323200": 1,
 "1664496000": 1,
 "1664755200": 4,
 "1664841600": 5,
 "1667865600": 3,
 "1678060800": 1
 }
}

• index.js -Main server file that sets up the Express server and API routes.
• leetcode.js -Contains the logic for interacting with LeetCode's GraphQL API.
• package.json - Project metadata and dependencies.

You can view a live demo of the project here. (Please note that it may take a few seconds for the server to wake up.)

Contributions are welcome! Please feel free to submit a pull request or open an issue to discuss improvements or bugs.

This project is licensed under the MIT License. See the LICENSE file for details.

• Author: Faisal Shohag
• Email: faisalshohagprog@gmail.com
• LinkedIn: faisal-shohag
• GitHub: faisal-shohag