Learn how to build a robust notification system with Lovable using our step-by-step guide. Discover design tips and integration strategies to engage your users effectively.
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Initializing Your Lovable Project Environment
lovable.config.json
(create this file at the root of your project if it does not exist) and add the following code snippet to include any dependencies you need for notifications:
{
"dependencies": {
"notifier": "^1.0.0",
"moment": "^2.29.1"
}
}
Creating the Notification Module
notifications.js
. You can add this file in the root directory or in a dedicated folder (e.g., /modules
) if you prefer to organize your code.notifications.js
. This module contains functions to send notifications and handle user subscriptions:
// notifications.js
// Import any required dependencies
import moment from 'moment';
// Simulated function to send a notification
export function sendNotification(userId, message) {
// Create a timestamp for the notification
const timestamp = moment().format('YYYY-MM-DD HH:mm:ss');
// Simulate notification sending process
console.log(Sending notification to User ${userId} at ${timestamp}: ${message}
);
// In a real scenario, this would trigger an API call or use a notifier library method.
}
// Function to subscribe a user to notifications
export function subscribeUser(userId) {
console.log(User ${userId} has been subscribed to notifications.
);
// Add additional subscription logic here (e.g., saving preferences to a database)
}
Integrating the Notification Module into Your Main Application
app.js
or main.js
in your Lovable project.notifications.js
and call them where necessary. For example, you might trigger a notification after a user action such as a form submission.
// app.js or main.js
// Import the notification functions
import { sendNotification, subscribeUser } from './notifications';
// Example: When a user clicks a button, send a notification.
document.getElementById('notifyBtn').addEventListener('click', function() {
const userId = 123; // This would be dynamically determined in a real app
const message = 'Your action was successful!';
sendNotification(userId, message);
});
// Example: Subscribe a user when they complete a registration form.
document.getElementById('subscribeBtn').addEventListener('click', function() {
const userId = 123; // Replace with the actual user ID
subscribeUser(userId);
});
Creating a Notification User Interface Component
index.html
).
Notification System
Notification System
<!-- Include your main JavaScript file -->
<script src="app.js"></script>
Testing Your Notification System
lovable.config.json
, notifications.js
, app.js
, and index.html
.
Deploying and Using Your Notification System
const express = require('express');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.json());
let notificationsStore = {};
app.post('/api/notifications', (req, res) => {
const { userId, eventType, data } = req.body;
if (!userId || !eventType) {
return res.status(400).json({ error: "userId and eventType are required" });
}
const notification = {
id: generateUniqueId(),
type: eventType,
recipient: userId,
message: createMessage(eventType, data),
createdAt: new Date()
};
notificationsStore[userId] = notificationsStore[userId] || [];
notificationsStore[userId].push(notification);
sendToLovableAPI(notification)
.then(response => res.status(200).json({ result: "Notification sent successfully", notification, details: response }))
.catch(err => res.status(500).json({ error: "Failed to send notification", details: err.message }));
});
function generateUniqueId() {
return 'notif-' + Math.random().toString(36).substr(2, 9);
}
function createMessage(eventType, data) {
switch (eventType) {
case 'LOVE':
return `Someone showed some love on your post: ${data.postTitle}`;
case 'COMMENT':
return `${data.commenterName} commented: "${data.comment}"`;
default:
return 'You have a new notification';
}
}
function sendToLovableAPI(notification) {
return new Promise((resolve, reject) => {
setTimeout(() => {
// Simulate API integration with Lovable service
if (notification.type) {
resolve({ status: 200, message: "Notification registered with Lovable" });
} else {
reject(new Error("Invalid notification type"));
}
}, 300);
});
}
app.listen(3000, () => console.log('Notification API running on port 3000'));
const express = require('express');
const axios = require('axios');
const app = express();
app.use(express.json());
const notificationsDB = {};
app.post('/api/v2/notifications', async (req, res) => {
const { userId, eventType, payload } = req.body;
if (!userId || !eventType) {
return res.status(400).json({ error: 'Missing userId or eventType' });
}
const notification = {
id: 'notif-' + Date.now() + '-' + Math.floor(Math.random() \* 1000),
userId,
eventType,
payload,
createdAt: new Date().toISOString()
};
notificationsDB[userId] = notificationsDB[userId] || [];
notificationsDB[userId].push(notification);
try {
const response = await axios.post('https://api.lovable.com/notify', {
notificationId: notification.id,
recipient: userId,
event: eventType,
data: payload,
timestamp: notification.createdAt
});
return res.status(200).json({ notification, externalResponse: response.data });
} catch (err) {
return res.status(500).json({
error: 'Failed to notify Lovable external API',
details: err.message
});
}
});
app.get('/api/v2/notifications/:userId', (req, res) => {
const { userId } = req.params;
res.json({ notifications: notificationsDB[userId] || [] });
});
app.listen(5000, () => console.log('Notification Service running on port 5000'));
const express = require('express');
const app = express();
app.use(express.json());
const notificationsStore = {};
function simulateLovableAPI(notification) {
return new Promise((resolve, reject) => {
const failureChance = Math.random();
setTimeout(() => {
if (failureChance < 0.5) {
reject(new Error("Simulated Lovable API failure"));
} else {
resolve({ status: 200, message: "Notification accepted by Lovable" });
}
}, 200);
});
}
function sendNotificationWithRetry(notification, attempt = 1) {
const maxAttempts = 3;
return simulateLovableAPI(notification).catch(err => {
if (attempt < maxAttempts) {
return new Promise((resolve) => {
setTimeout(() => {
resolve(sendNotificationWithRetry(notification, attempt + 1));
}, 100 \* Math.pow(2, attempt));
});
} else {
throw err;
}
});
}
app.post('/api/v3/notify', async (req, res) => {
const { userId, eventType, details } = req.body;
if (!userId || !eventType) {
return res.status(400).json({ error: "userId and eventType are required" });
}
const notification = {
id: "notif-" + Date.now() + "-" + Math.floor(Math.random() \* 10000),
userId,
eventType,
details,
status: "pending",
createdAt: new Date().toISOString()
};
notificationsStore[notification.id] = notification;
try {
const response = await sendNotificationWithRetry(notification);
notification.status = "sent";
notification.lovableResponse = response;
res.status(200).json({ result: "Notification processed", notification });
} catch (err) {
notification.status = "failed";
notification.error = err.message;
res.status(500).json({ error: "Notification failed after retries", notification });
}
});
app.get('/api/v3/notifications/:userId', (req, res) => {
const { userId } = req.params;
const userNotifications = Object.values(notificationsStore).filter(n => n.userId === userId);
res.status(200).json({ notifications: userNotifications });
});
app.listen(4000, () => console.log("Notification server (v3) running on port 4000"));
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Understanding the Notification System and AI Code Generators
Requirements and Setup
Planning Your Notification Workflow
Designing a Simple System Architecture
Setting Up Your Development Environment
Drafting the Initial Notification Code
notification\_system.py
in your project folder. This file will contain the script to send notifications.
import smtplib
from email.mime.text import MIMEText
def send_email(subject, body, to_email):
# Set up your email details
from_email = "youremail@example.com"
msg = MIMEText(body)
msg['Subject'] = subject
msg['From'] = from_email
msg['To'] = to_email
# Connect to an SMTP server (this is a placeholder configuration)
with smtplib.SMTP('smtp.example.com', 587) as server:
server.starttls()
server.login(from\_email, "yourpassword")
server.send\_message(msg)
if name == "main":
send_email("Test Notification", "This is a test message.", "user@example.com")
Integrating AI Code Generators for Code Customization
def generate_notification_message(template, user_name, event_details):
# AI Code Generator can be used here to refine or create dynamic content
message = template.replace("{user}", user_name).replace("{event}", event_details)
return message
Using the generated function to create a message
template = "Hello {user}, your recent event: {event} has been processed successfully."
print(generate_notification_message(template, "Alice", "order confirmation"))
Implementing Notification Delivery Mechanisms
from twilio.rest import Client
def send_sms(body, to_number):
account_sid = 'your_account_sid'
auth_token = 'your_auth_token'
client = Client(account_sid, auth_token)
message = client.messages.create(
body=body,
from_='+1234567890',
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