This content originally appeared on DEV Community and was authored by Susheel kumar
I am excited to announce the release of my new Node.js package: Car Auction! This package provides a robust and flexible framework for creating a car auction system using Express.js and MongoDB. Whether you're building a simple auction platform or a more complex application, this package offers the essential features you need to get started.
Features
- Express.js Integration: The package is built on top of Express.js, making it easy to set up and customize your server.
- MongoDB Support: Seamlessly connect to MongoDB for data storage, allowing you to manage auction data efficiently.
- Bid Management: Place, update, and manage bids with built-in validation to ensure a smooth bidding process.
- Auction Control: End auctions and select winners with permission-based access control, ensuring that only authorized users can perform critical actions.
Getting Started
To get started with the Car Auction package, follow these simple steps:
1. Install Dependencies
Make sure you have Node.js and MongoDB installed. Then, install the required dependencies:
npm install express mongoose
2. Set Up the Server
Create a file named server.js and add the following code:
const express = require('express');
const mongoose = require('mongoose');
const SakshCarAuction = require('./index');
const app = express();
const port = 3000;
// Middleware to parse JSON
app.use(express.json());
// Connect to MongoDB
mongoose.connect('mongodb://localhost:27017/auctionDB', {
useNewUrlParser: true,
useUnifiedTopology: true
})
.then(() => console.log('MongoDB connected'))
.catch(err => console.error('MongoDB connection error:', err));
// Example user IDs
const userId1 = 'user123';
const userId2 = 'user456';
const userId3 = 'user789';
// Create instances of SakshCarAuction for different users
const auction1 = new SakshCarAuction(userId1);
const auction2 = new SakshCarAuction(userId2);
const auction3 = new SakshCarAuction(userId3);
// Example callback function for bid validation
const validateBid = (carId, bidAmount) => {
return bidAmount > 0; // Example validation: bid amount must be greater than 0
};
// Example callback function for permission validation
const validatePermission = (userId, resourceId, action) => {
if (action === "updatebid" || action === "selectwinner" || action === "closebidding") {
return userId === 'user123'; // Example validation: only user123 has permission for these actions
}
return true;
};
// Define routes for placing bids, updating bids, ending auctions, and selecting winners
// (Add your route definitions here)
// Start the server
app.listen(port, () => {
console.log(`Server running at http://localhost:${port}`);
});
3. Start the Server
Run the server using the following command:
node server.js
4. Test the API
You can use tools like curl or Postman to test the API endpoints. Here are some example commands:
-
Place a Bid:
curl -X POST http://localhost:3000/placeBid -H "Content-Type: application/json" -d '{"carId": "66ebd87c0cab7b7737ecda1a", "bidAmount": 5000, "userId": "user123"}' -
Update a Bid:
curl -X PUT http://localhost:3000/updateBid -H "Content-Type: application/json" -d '{"bidId": "bid123", "newBidAmount": 6000, "userId": "user123"}' -
End the Auction:
curl -X POST http://localhost:3000/endAuction -H "Content-Type: application/json" -d '{"carId": "66ebd87c0cab7b7737ecda1a", "userId": "user123"}' -
Select the Winner:
curl -X POST http://localhost:3000/selectWinner -H "Content-Type: application/json" -d '{"carId": "66ebd87c0cab7b7737ecda1a", "userId": "user123"}'
Conclusion
The Car Auction package is designed to simplify the process of building a car auction system. With its easy-to-use API and built-in validation, you can focus on creating a great user experience without worrying about the underlying complexities.
I invite you to try out the Car Auction package and provide feedback. Your contributions and suggestions are always welcome!
Happy coding!
This content originally appeared on DEV Community and was authored by Susheel kumar
Susheel kumar | Sciencx (2024-09-19T09:25:27+00:00) Node.js package: Car Auction!. Retrieved from https://www.scien.cx/2024/09/19/node-js-package-car-auction/
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