@devrecipies/nestjs-modules

A collection of production-ready NestJS modules for common use cases. This package provides pre-built modules that can be easily integrated into your NestJS applications.

Installation

npm install @devrecipies/nestjs-modules
# or
yarn add @devrecipies/nestjs-modules
# or
pnpm add @devrecipies/nestjs-modules

Available Modules

🔥 Firebase Cloud Messaging (FCM) Module

Send push notifications to mobile devices and web browsers using Firebase Cloud Messaging.

Features

✅ Send notifications to individual devices
✅ Send notifications to multiple devices
✅ Send notifications to topics
✅ Subscribe devices to topics
✅ Unsubscribe devices from topics
✅ Built-in error handling
✅ TypeScript support
✅ Easy configuration

Setup

Install Firebase Admin SDK (if not already installed):

npm install firebase-admin

Configure Firebase credentials by setting environment variables or using a service account file:

# Using environment variables
FIREBASE_PROJECT_ID=your-project-id
FIREBASE_CLIENT_EMAIL=your-service-account-email
FIREBASE_PRIVATE_KEY=your-private-key

# Or place your firebase service account JSON file in your project

Import and configure the module in your NestJS application:

import { Module } from '@nestjs/common';
import { FcmModule } from '@devrecipies/nestjs-modules';

@Module({
  imports: [
    FcmModule.forRoot({
      config: {
        projectId: process.env.FIREBASE_PROJECT_ID || '',
        clientEmail: process.env.FIREBASE_CLIENT_EMAIL || '',
        privateKey: process.env.FIREBASE_PRIVATE_KEY || '',
        // Or use service account file path
        // serviceAccountPath: './path/to/serviceAccount.json'
      },
    }),
  ],
})
export class AppModule {}

Usage

import { Injectable } from '@nestjs/common';
import { FcmService } from '@devrecipies/nestjs-modules';

@Injectable()
export class NotificationService {
  constructor(private readonly fcmService: FcmService) {}

  async sendNotification() {
    const deviceToken = 'user-device-token';
    
    try {
      const result = await this.fcmService.sendToDevice(deviceToken, {
        notification: {
          title: 'Hello!',
          body: 'This is a test notification',
        },
        data: {
          customKey: 'customValue',
        },
      });
      
      console.log('Notification sent successfully:', result);
      return result;
    } catch (error) {
      console.error('Failed to send notification:', error);
      throw error;
    }
  }

  async sendToMultipleDevices() {
    const deviceTokens = ['token1', 'token2', 'token3'];
    
    const result = await this.fcmService.sendToMultipleDevices(deviceTokens, {
      notification: {
        title: 'Broadcast Message',
        body: 'This message is sent to multiple devices',
      },
    });

    return result;
  }

  async sendToTopic() {
    const topic = 'news-updates';
    
    const result = await this.fcmService.sendToTopic(topic, {
      notification: {
        title: 'Breaking News',
        body: 'Important news update for all subscribers',
      },
      data: {
        category: 'news',
        priority: 'high',
      },
    });

    return result;
  }

  async subscribeToTopic() {
    const deviceTokens = ['token1', 'token2'];
    const topic = 'news-updates';
    
    const result = await this.fcmService.subscribeToTopic(deviceTokens, topic);
    console.log(`Subscribed ${result.successCount} devices to ${topic}`);
    
    return result;
  }

  async unsubscribeFromTopic() {
    const deviceTokens = ['token1', 'token2'];
    const topic = 'news-updates';
    
    const result = await this.fcmService.unsubscribeFromTopic(deviceTokens, topic);
    console.log(`Unsubscribed ${result.successCount} devices from ${topic}`);
    
    return result;
  }
}

API Endpoints Example

import { Controller, Post, Body } from '@nestjs/common';
import { FcmService } from '@devrecipies/nestjs-modules';

interface SendNotificationDto {
  title: string;
  body: string;
  token: string;
  data?: { [key: string]: string };
}

interface SendToMultipleDevicesDto {
  title: string;
  body: string;
  tokens: string[];
  data?: { [key: string]: string };
}

interface SendToTopicDto {
  title: string;
  body: string;
  topic: string;
  data?: { [key: string]: string };
}

interface TopicSubscriptionDto {
  tokens: string[];
  topic: string;
}

@Controller()
export class AppController {
  constructor(private readonly fcmService: FcmService) {}

  @Post('send-notification')
  async sendNotification(@Body() dto: SendNotificationDto) {
    try {
      const { title, body, token, data } = dto;
      const result = await this.fcmService.sendToDevice(token, {
        notification: { title, body },
        data,
      });

      return {
        success: true,
        messageId: result,
        message: 'Notification sent successfully',
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error occurred',
        message: 'Failed to send notification',
      };
    }
  }

  @Post('send-to-multiple-devices')
  async sendToMultipleDevices(@Body() dto: SendToMultipleDevicesDto) {
    try {
      const { title, body, tokens, data } = dto;
      const result = await this.fcmService.sendToMultipleDevices(tokens, {
        notification: { title, body },
        data,
      });

      return {
        success: true,
        successCount: result.successCount,
        failureCount: result.failureCount,
        message: `Messages sent to ${result.successCount}/${tokens.length} devices`,
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error occurred',
        message: 'Failed to send notifications to multiple devices',
      };
    }
  }

  @Post('send-to-topic')
  async sendToTopic(@Body() dto: SendToTopicDto) {
    try {
      const { title, body, topic, data } = dto;
      const result = await this.fcmService.sendToTopic(topic, {
        notification: { title, body },
        data,
      });

      return {
        success: true,
        messageId: result,
        message: `Message sent successfully to topic '${topic}'`,
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error occurred',
        message: 'Failed to send message to topic',
      };
    }
  }

  @Post('subscribe-to-topic')
  async subscribeToTopic(@Body() dto: TopicSubscriptionDto) {
    try {
      const { tokens, topic } = dto;
      const result = await this.fcmService.subscribeToTopic(tokens, topic);

      return {
        success: true,
        successCount: result.successCount,
        failureCount: result.failureCount,
        message: `Subscribed ${result.successCount}/${tokens.length} devices to topic '${topic}'`,
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error occurred',
        message: 'Failed to subscribe devices to topic',
      };
    }
  }

  @Post('unsubscribe-from-topic')
  async unsubscribeFromTopic(@Body() dto: TopicSubscriptionDto) {
    try {
      const { tokens, topic } = dto;
      const result = await this.fcmService.unsubscribeFromTopic(tokens, topic);

      return {
        success: true,
        successCount: result.successCount,
        failureCount: result.failureCount,
        message: `Unsubscribed ${result.successCount}/${tokens.length} devices from topic '${topic}'`,
      };
    } catch (error) {
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error occurred',
        message: 'Failed to unsubscribe devices from topic',
      };
    }
  }
}

Frontend Integration

React + Firebase Example

Here's how to integrate with a React frontend to receive FCM tokens and messages:

1. Install Firebase SDK

npm install firebase

2. Firebase Configuration

// firebase-config.ts
import { initializeApp } from 'firebase/app';
import { getMessaging } from 'firebase/messaging';

const firebaseConfig = {
  apiKey: "your-api-key",
  authDomain: "your-project.firebaseapp.com",
  projectId: "your-project-id",
  storageBucket: "your-project.appspot.com",
  messagingSenderId: "your-messaging-sender-id",
  appId: "your-app-id"
};

export const app = initializeApp(firebaseConfig);
export const messaging = getMessaging(app);

// Register service worker for background messaging
if ('serviceWorker' in navigator) {
  navigator.serviceWorker.register('/firebase-messaging-sw.js')
    .then((registration) => {
      console.log('Service Worker registered successfully:', registration);
    })
    .catch((error) => {
      console.error('Service Worker registration failed:', error);
    });
}

3. Service Worker (public/firebase-messaging-sw.js)

importScripts('https://www.gstatic.com/firebasejs/12.1.0/firebase-app-compat.js');
importScripts('https://www.gstatic.com/firebasejs/12.1.0/firebase-messaging-compat.js');

const firebaseConfig = {
  apiKey: "your-api-key",
  authDomain: "your-project.firebaseapp.com",
  projectId: "your-project-id",
  storageBucket: "your-project.appspot.com",
  messagingSenderId: "your-messaging-sender-id",
  appId: "your-app-id"
};

firebase.initializeApp(firebaseConfig);

const messaging = firebase.messaging();

messaging.onBackgroundMessage(function(payload) {
  console.log('Received background message ', payload);

  const notificationTitle = payload.notification.title;
  const notificationOptions = {
    body: payload.notification.body,
    icon: '/firebase-logo.png'
  };

  self.registration.showNotification(notificationTitle, notificationOptions);
});

4. React Component

import React, { useState, useEffect } from 'react';
import { getToken, onMessage } from 'firebase/messaging';
import { messaging } from './firebase-config';

interface Message {
  id: string;
  title: string;
  body: string;
  timestamp: Date;
}

export function FCMComponent() {
  const [deviceToken, setDeviceToken] = useState<string>('');
  const [messages, setMessages] = useState<Message[]>([]);

  useEffect(() => {
    const generateToken = async () => {
      try {
        const permission = await Notification.requestPermission();
        if (permission === 'granted') {
          const token = await getToken(messaging, {
            vapidKey: 'your-vapid-key'
          });
          if (token) {
            setDeviceToken(token);
          }
        }
      } catch (error) {
        console.error('Error generating token:', error);
      }
    };

    generateToken();
  }, []);

  useEffect(() => {
    // Listen for foreground messages
    const unsubscribe = onMessage(messaging, (payload) => {
      console.log('Message received:', payload);
      
      const newMessage: Message = {
        id: Date.now().toString(),
        title: payload.notification?.title || 'No Title',
        body: payload.notification?.body || 'No Body',
        timestamp: new Date()
      };

      setMessages(prev => [newMessage, ...prev]);
    });

    return () => unsubscribe();
  }, []);

  const testNotification = async () => {
    if (!deviceToken) return;

    try {
      const response = await fetch('http://localhost:3000/send-notification', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({
          title: 'Test Notification',
          body: 'This is a test message!',
          token: deviceToken
        }),
      });

      const result = await response.json();
      console.log('Notification sent:', result);
    } catch (error) {
      console.error('Failed to send notification:', error);
    }
  };

  return (
    <div>
      <h2>Firebase Cloud Messaging</h2>
      
      <div>
        <h3>Device Token</h3>
        <textarea value={deviceToken} readOnly rows={4} cols={50} />
        <br />
        <button onClick={testNotification} disabled={!deviceToken}>
          Send Test Notification
        </button>
      </div>

      <div>
        <h3>Received Messages</h3>
        {messages.length === 0 ? (
          <p>No messages received yet</p>
        ) : (
          <ul>
            {messages.map((message) => (
              <li key={message.id}>
                <strong>{message.title}</strong>: {message.body}
                <br />
                <small>{message.timestamp.toLocaleString()}</small>
              </li>
            ))}
          </ul>
        )}
      </div>
    </div>
  );
}

5. Testing with cURL

Send to Single Device:

curl -X POST http://localhost:3000/send-notification \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Test FCM Notification",
    "body": "This is a real test notification!",
    "token": "your-device-token-here",
    "data": {
      "userId": "123",
      "actionType": "message"
    }
  }'

Send to Multiple Devices:

curl -X POST http://localhost:3000/send-to-multiple-devices \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Broadcast Message",
    "body": "This message is sent to multiple devices",
    "tokens": ["token1", "token2", "token3"],
    "data": {
      "type": "broadcast",
      "priority": "high"
    }
  }'

Send to Topic:

curl -X POST http://localhost:3000/send-to-topic \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Topic Notification",
    "body": "This is a notification sent to a topic",
    "topic": "news-updates",
    "data": {
      "category": "news",
      "timestamp": "2024-01-01T00:00:00Z"
    }
  }'

Subscribe to Topic:

curl -X POST http://localhost:3000/subscribe-to-topic \
  -H "Content-Type: application/json" \
  -d '{
    "tokens": ["device-token-1", "device-token-2"],
    "topic": "news-updates"
  }'

Unsubscribe from Topic:

curl -X POST http://localhost:3000/unsubscribe-from-topic \
  -H "Content-Type: application/json" \
  -d '{
    "tokens": ["device-token-1", "device-token-2"],
    "topic": "news-updates"
  }'

🐳 Quick Start with Docker

The easiest way to get started is using our pre-built Docker image:

Option 1: Docker Compose (Recommended)

Create a docker-compose.yml file:

version: '3.8'

services:
  nestjs-modules-fcm:
    image: devrecipies/nestjs-modules-fcm:latest
    container_name: nestjs-modules-fcm
    ports:
      - "3130:3000"
    environment:
      - NODE_ENV=production
      - PORT=3000
      # Firebase configuration - add your actual values to .env file
      - FIREBASE_PROJECT_ID=${FIREBASE_PROJECT_ID:-your-project-id}
      - FIREBASE_CLIENT_EMAIL=${FIREBASE_CLIENT_EMAIL:[email protected]}
      - FIREBASE_PRIVATE_KEY=${FIREBASE_PRIVATE_KEY:-your-private-key}
    env_file:
      - .env
    restart: unless-stopped

Create a .env file with your Firebase credentials:

FIREBASE_PROJECT_ID=your-actual-project-id
FIREBASE_CLIENT_EMAIL=your-service-account@your-project.iam.gserviceaccount.com
FIREBASE_PRIVATE_KEY="-----BEGIN PRIVATE KEY-----\nYour-actual-private-key\n-----END PRIVATE KEY-----"

Run the application:

docker-compose up -d

Access your API:

Base URL: http://localhost:3130
API endpoints: http://localhost:3130/api/

Option 2: Direct Docker Run

docker run -d \
  --name nestjs-modules-fcm \
  -p 3130:3000 \
  --env-file .env \
  devrecipies/nestjs-modules-fcm:latest

That's it! Your FCM API server is now running and ready to send notifications.

Examples

Backend Example: See apps/nestjs-modules-app/ for a complete NestJS application example
Frontend Example: See apps/example-ui/ for a complete React application example

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT

Support

If you encounter any issues or have questions, please file an issue on our GitHub repository.

Name		Name	Last commit message	Last commit date
Latest commit History 23 Commits
.verdaccio		.verdaccio
.vscode		.vscode
apps		apps
libs/nestjs-modules		libs/nestjs-modules
.dockerignore		.dockerignore
.editorconfig		.editorconfig
.env.example		.env.example
.gitignore		.gitignore
.npmrc		.npmrc
.prettierignore		.prettierignore
.prettierrc		.prettierrc
CHANGELOG.md		CHANGELOG.md
Dockerfile		Dockerfile
Frontend.png		Frontend.png
README.md		README.md
docker-compose.yml		docker-compose.yml
eslint.config.mjs		eslint.config.mjs
jest.config.ts		jest.config.ts
jest.preset.js		jest.preset.js
nx.json		nx.json
package.json		package.json
pnpm-lock.yaml		pnpm-lock.yaml
pnpm-workspace.yaml		pnpm-workspace.yaml
tsconfig.base.json		tsconfig.base.json
tsconfig.json		tsconfig.json

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@devrecipies/nestjs-modules

Installation

Available Modules

🔥 Firebase Cloud Messaging (FCM) Module

Features

Setup

Usage

API Endpoints Example

Frontend Integration

React + Firebase Example

1. Install Firebase SDK

2. Firebase Configuration

3. Service Worker (public/firebase-messaging-sw.js)

4. React Component

5. Testing with cURL

🐳 Quick Start with Docker

Option 1: Docker Compose (Recommended)

Option 2: Direct Docker Run

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@devrecipies/nestjs-modules

Installation

Available Modules

🔥 Firebase Cloud Messaging (FCM) Module

Features

Setup

Usage

API Endpoints Example

Frontend Integration

React + Firebase Example

1. Install Firebase SDK

2. Firebase Configuration

3. Service Worker (public/firebase-messaging-sw.js)

4. React Component

5. Testing with cURL

🐳 Quick Start with Docker

Option 1: Docker Compose (Recommended)

Option 2: Direct Docker Run

Examples

Contributing

License

Support

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