Here’s a comprehensive README.md for quantadb, which includes setup instructions, usage examples, and detailed information about the database.

# quantadb

**quantadb** is a simple and unique file-based database for Node.js that supports CRUD operations with sequential integer IDs. It's designed to be easy to use and integrate into your projects, offering a lightweight solution for data storage and management.

## Features

- **Sequential Integer IDs**: Automatically generates and manages sequential integer IDs starting from 1.
- **File-Based Storage**: Stores data in custom `.xdb` files, making it easy to manage and backup.
- **CRUD Operations**: Supports Create, Read, Update, and Delete operations.
- **Lightweight and Simple**: No complex setup required; works directly with file-based storage.

## Installation

1. **Install the Package Locally**

   To install `quantadb` locally in your Node.js project, use the following command:

   ```bash
   npm install quantadb

2. install for Development

   npm i quantadb

Usage

1. Basic Setup

   Create a new instance of quantadb by specifying the directory where the database files will be stored.

   const quantadb = require('quantadb');
   const db = new quantadb('./db');

2. Create a Document

   Create a new document in a specified collection.

   async function createUser() {
     const user = await db.create('users', { name: 'Alice', age: 25 });
     console.log('Created User:', user);
   }

3. Read Documents

   Read documents from a collection with optional query parameters.

   async function readUsers() {
     const users = await db.read('users');
     console.log('Users:', users);
   }

4. Update a Document

   Update an existing document by its ID.

   async function updateUser(id, updates) {
     const updatedUser = await db.update('users', id, updates);
     console.log('Updated User:', updatedUser);
   }

5. Delete a Document

   Delete a document by its ID.

   async function deleteUser(id) {
     await db.delete('users', id);
     console.log('Deleted User with ID:', id);
   }

Example

Here's a complete example that demonstrates creating, reading, updating, and deleting documents:

example.js:

const quantadb = require('quantadb');

(async () => {
  const db = new quantadb('./db');

  // Create users
  const user1 = await db.create('users', { name: 'Alice', age: 25 });
  const user2 = await db.create('users', { name: 'Bob', age: 30 });

  // Read users
  console.log(await db.read('users'));

  // Update a user
  console.log(await db.update('users', user1.id, { age: 26 }));

  // Delete a user
  await db.delete('users', user2.id);

  // Read users again
  console.log(await db.read('users'));
})();

Project Structure

The quantadb project is structured as follows:

quantadb/
│
├── src/
│   ├── FileDatabase.js     # Core file-based database implementation
│
├── test/
│   ├── server.js           # Express server for testing
│   ├── public/
│   │   ├── index.html      # HTML file for the front-end
│   │   ├── style.css       # CSS file for styling
│   │   ├── script.js       # JavaScript file for front-end logic
│
├── package.json            # NPM package configuration
├── README.md               # Project documentation

Contributing

If you'd like to contribute to quantadb, please fork the repository and submit a pull request. Ensure that your code adheres to the coding style and includes appropriate tests.

License

quantadb is licensed under the MIT License.

This `README.md` provides an overview of `quantadb`, including installation instructions, usage examples, and details about the project structure. Adjust the email and contact details as necessary.