How to build Subscription system with Lovable?

 
Prerequisites for Building a Subscription System with Lovable
 

• A Lovable account. Sign up at Lovable's official website if you don't have one.
• Basic understanding of JavaScript and HTTP requests.
• Access to Lovable’s project dashboard for editing code files directly.
• A Stripe account (or similar payment platform) for managing subscriptions.

 
Creating a New Lovable Project
 

• Log into your Lovable account and navigate to your dashboard.
• Click on the button to create a new project. Name it, for example, "SubscriptionSystem".
• In your new project, you will have a file explorer where you can create and edit files.

 
Adding Dependencies Without a Terminal
 

• Since Lovable does not have a terminal, dependencies must be declared directly in a configuration file.
• Create a new file in the root of your project called lovable.config.json and add the following snippet to include the Stripe dependency:

  
  {
    "dependencies": {
      "stripe": "^8.0.0",
      "express": "^4.17.1",
      "body-parser": "^1.19.0"
    }
  }
      

• This configuration tells Lovable to load these libraries when your project runs.

 
Setting Up the Subscription Backend
 

• Create a new file in your project named server.js. This file will serve as your main backend file.
• Open server.js and paste the following code snippet. This code sets up an Express server, handles a subscription endpoint, and integrates with Stripe for payment processing:

  
  const express = require('express');
  const bodyParser = require('body-parser');
  
  // Set your Stripe secret key from environment or directly here (for demo purposes)
  const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY || 'your_stripe_secret_key_here');
  const app = express();
  // Parse JSON and URL-encoded data
  app.use(bodyParser.json());
  app.use(bodyParser.urlencoded({ extended: true }));
  // Subscription endpoint
  app.post('/subscribe', async (req, res) => {
    try {
      const { email, token } = req.body;
  // Create a new customer in Stripe
  const customer = await stripe.customers.create({
    email: email,
    source: token,
  });
  
  // Create a subscription for the customer
  const subscription = await stripe.subscriptions.create({
    customer: customer.id,
    items: [{ plan: 'plan_id' }], // Replace 'plan_id' with your actual plan ID
  });
  
  res.send({ success: true, subscriptionId: subscription.id });
  
    } catch (error) {
      res.status(500).send({ error: error.message });
    }
  });
  // Start the server on the designated port
  app.listen(process.env.PORT || 3000, () => {
    console.log('Subscription System is running');
  });
      

  
  


• Save the file. This code creates a server that listens for POST requests at the "/subscribe" endpoint to handle new subscriptions.

 
Creating the Frontend Subscription Form
 

• Create a new file named subscription.html in your project.
• Open subscription.html and paste the following code snippet. This HTML file contains a simple subscription form and uses JavaScript to send data to your backend:

  
  
  
    
      
      
      
    
    
      
  
        
        Subscribe