feat: Add Firebase module

src/common/modules/firebase/firebase.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+
+import { FirebaseService } from './firebase.service';
+
+@Module({
+  providers: [FirebaseService],
+  exports: [FirebaseService],
+})
+export class FirebaseModule {}

src/common/modules/firebase/firebase.service.ts

@@ -0,0 +1,78 @@
+import * as admin from 'firebase-admin';
+import { TokenMessage } from 'firebase-admin/lib/messaging/messaging-api';
+import { DateTime } from 'luxon';
+import * as serverAccount from 'secret/firebase.json';
+
+import { Injectable } from '@nestjs/common';
+
+import { FCMTokenMessageModel } from './models/token-data.model';
+
+@Injectable()
+export class FirebaseService {
+  constructor() {
+    admin.initializeApp({
+      credential: admin.credential.cert(serverAccount as admin.ServiceAccount),
+    });
+  }
+
+  async tokenMessageGenerator({
+    token,
+    title,
+    body,
+    data,
+  }: FCMTokenMessageModel): Promise<TokenMessage> {
+    const message: TokenMessage = {
+      notification: {
+        title,
+        body,
+      },
+      token,
+      data: data as unknown as { [key: string]: string },
+      android: {
+        priority: 'high',
+        ttl: 60 * 1000 * 30, // 30 minutes
+        notification: {
+          priority: 'high',
+          sound: 'default',
+          channelId: 'high_importance_channel',
+        },
+      },
+      apns: {
+        headers: {
+          'apns-priority': '10',
+          'apns-expiration': (60 * 30).toString(), // 30 minutes
+        },
+        payload: {
+          aps: {
+            badge: 0,
+            sound: 'default',
+          },
+        },
+      },
+    };
+
+    return message;
+  }
+
+  async sendNotificationByToken(notificationData: FCMTokenMessageModel): Promise<boolean> {
+    try {
+      await admin
+        .messaging()
+        .send(await this.tokenMessageGenerator(notificationData))
+        .then((response) => {
+          console.log(
+            DateTime.now().toISO({ includeOffset: true }),
+            notificationData.token,
+            notificationData.body,
+            response,
+          );
+        });
+
+      return true;
+    } catch (error) {
+      console.error('Error sending message:', error);
+
+      return false;
+    }
+  }
+}

src/common/modules/firebase/index.ts

@@ -0,0 +1 @@
+export * from './firebase.module';

src/common/modules/firebase/models/token-data.model.ts

@@ -0,0 +1,11 @@
+export interface FCMTokenMessageModel {
+  token: string;
+  title: string;
+  body: string;
+  data?: MessageDataModel;
+}
+
+export interface MessageDataModel {
+  clickAction: string;
+  data?: string; // JSON string
+}

src/common/modules/index.ts

@@ -1,3 +1,4 @@
 export * from './prisma';
 export * from './coolsms';
 export * from './s3';
+export * from './firebase';