🔗 Link Shortener Plugin

A simple, pluggable Node.js module for shortening URLs using SQLite, with support for custom expiry dates and automatic cleanup via cron jobs.

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📦 Features

• ✅ Shorten long URLs with optional expiry dates
• ✅ Retrieve the original URL from a short code
• ✅ Auto-deletes expired links using a daily cron job
• ✅ Uses SQLite for lightweight persistence
• ✅ No external APIs required

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🛠️ Installation

npm install digi-url-shortener

Make sure you have Node.js v18+ installed.

📁 Project Structure

    link-shortener/
    ├── database/
    │   └── links.db              # SQLite DB (created automatically)
    ├── utils/
    │   └── helperFunctions.js    # Core logic (shorten, retrieve, cleanup)
    ├── dbConfig/
    │   └── index.js              # SQLite CRUD operations
    ├── index.js                  # Entry point or API setup
    ├── .env.example              # Environment variables
    ├── package.json
    └── README.md

⚙️ Configuration

DB_PATH=./database/links.db

🚀 Usage

Import Functions

const {
  getShortenUrlCode,
  getOriginalUrlByShortCode,
  deleteExpiredShortUrlsCodes,
} = require("./interface");

Create a Short URL

const shortCode = await getShortenUrlCode({
  longUrl: "https://example.com",
  expiryInDays: 7,
  codeLength: 10,
});
console.log("Short code:", shortCode);

Get Original URL

const originalUrl = await getOriginalUrlByShortCode("shortCode123");
console.log("Original URL:", originalUrl);

Start Expired Link Cleanup

deleteExpiredShortUrlsCodes();

Example

(async () => {
  const shortCode = await getShortenUrlCode({
    longUrl: "https://example.com",
    expiryInDays: 5,
    codeLength: 10,
  });

  console.log("Short code is:", shortCode);

  const original = await getOriginalUrlByShortCode(shortCode);
  console.log("Original URL:", original);
})();

License 📝

This project is licensed under the ISC License.

Author ✍️

DigiMantra