qr mailer done - advancements remainig

package-lock.json

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+          "version": "15.4.1",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.4.1.tgz",
+          "integrity": "sha512-aePbxDmcYW++PaqBsJ+HYUFwCdv4LVvdnhBy78E57PIor8/OVvhMrADFFEDh8DHDFRv/O9i3lPhsENjO7QX0+A==",
+          "requires": {
+            "cliui": "^6.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^4.1.0",
+            "get-caller-file": "^2.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^4.2.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^18.1.2"
+          }
+        },
+        "yargs-parser": {
+          "version": "18.1.3",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
+          "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==",
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
     "qs": {
       "version": "6.13.0",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.13.0.tgz",
@@ -16389,6 +16633,11 @@
       "integrity": "sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==",
       "dev": true
     },
+    "require-main-filename": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
+      "integrity": "sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg=="
+    },
     "resolve": {
       "version": "1.22.8",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.8.tgz",
@@ -16694,6 +16943,11 @@
         "send": "0.19.0"
       }
     },
+    "set-blocking": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
+      "integrity": "sha512-KiKBS8AnWGEyLzofFfmvKwpdPzqiy16LvQfK3yv/fVH7Bj13/wl3JSR1J+rfgRE9q7xUJK4qvgS8raSOeLUehw=="
+    },
     "set-function-length": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/set-function-length/-/set-function-length-1.2.2.tgz",
@@ -17721,6 +17975,11 @@
         "isexe": "^2.0.0"
       }
     },
+    "which-module": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.1.tgz",
+      "integrity": "sha512-iBdZ57RDvnOR9AGBhML2vFZf7h8vmBjhoaZqODJBFWHVtKkDmKuHai3cx5PgVMrX5YDNp27AofYbAwctSS+vhQ=="
+    },
     "wildcard": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/wildcard/-/wildcard-2.0.1.tgz",
@@ -17744,7 +18003,6 @@
       "version": "6.2.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
       "integrity": "sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==",
-      "dev": true,
       "requires": {
         "ansi-styles": "^4.0.0",
         "string-width": "^4.1.0",

package.json

@@ -35,10 +35,11 @@
     "dotenv": "^16.3.1",
     "handlebars": "^4.7.8",
     "moment": "^2.30.1",
-    "nodemailer": "^6.9.9",
+    "nodemailer": "^6.10.0",
     "otp-generator": "^4.0.1",
     "passport-jwt": "^4.0.1",
     "pg": "^8.14.1",
+    "qrcode": "^1.5.4",
     "reflect-metadata": "^0.1.14",
     "rxjs": "^7.8.1",
     "sequelize": "^6.35.2",

src/app.module.ts

@@ -21,6 +21,9 @@ import { TicketModule } from './ticket/ticket.module';
 import { TicketPricingModule } from './ticketPricing/ticketPricing.module';
 import { TimeSlotModule } from './timeSlot/timeSlot.module';
 import { PushSubscriptionModule } from './push-subscription/push-subscription.module';
+import { MailerModule } from './node-mailer/mailer.module';
+import { ConfigModule } from '@nestjs/config';
+import { QrcodeModule } from './qrcode/qrcode.module';
 
 @Module({
   imports: [
@@ -40,7 +43,10 @@ import { PushSubscriptionModule } from './push-subscription/push-subscription.mo
     TicketPricingModule,
     TimeSlotModule,
     UserModule,
-    PushSubscriptionModule
+    PushSubscriptionModule,
+    MailerModule,
+    ConfigModule.forRoot(),
+    QrcodeModule
 
   ],
   controllers: [AppController, AppConfigController],

src/node-mailer/mailer.controller.spec.ts

@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { MailerController } from './mailer.controller';
+import { MailerService } from './mailer.service';
+
+describe('MailerController', () => {
+  let controller: MailerController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [MailerController],
+      providers: [MailerService],
+    }).compile();
+
+    controller = module.get<MailerController>(MailerController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

src/node-mailer/mailer.controller.ts

@@ -0,0 +1,50 @@
+import {
+  Body,
+  Controller,
+  Post
+} from '@nestjs/common';
+import { MailerService } from './mailer.service';
+import { SendMailerDto } from './mailer.interface';
+import { Address } from 'nodemailer/lib/mailer';
+import * as path from 'path';
+import * as fs from 'fs';
+
+@Controller('mailer')
+export class MailerController {
+  constructor(private readonly mailerService: MailerService) {}
+
+  @Post('send-email')
+  async sendEmail(
+    @Body()
+    body: {
+      from?: Address;
+      name: string;
+      email: string;
+      subject?: string;
+      otp: string;
+      attachments?: { filename: string; path: string }[];
+    },
+  ) {
+    // const htmlTemplate = fs.readFileSync('emailTemplate.html', 'utf8');
+    const templatePath = path.join(
+      process.cwd(),
+      'src\\node-mailer\\templates\\emailTemplate.html',
+    );
+
+    if (!fs.existsSync(templatePath)) {
+      throw new Error(`Template file not found at: ${templatePath}`);
+    }
+
+    const htmlTemplate = fs.readFileSync(templatePath, 'utf8');
+    const sendDto: SendMailerDto = {
+      from: body.from,
+      reciepients: [{ name: body.name, address: body.email }],
+      subject: 'Registration OTP',
+      html: htmlTemplate
+        .replace('{{name}}', body.name)
+        .replace('{{otp}}', body.otp),
+      attachments: body.attachments,
+    };
+    return this.mailerService.sendMail(sendDto);
+  }
+}

src/node-mailer/mailer.interface.ts

@@ -0,0 +1,11 @@
+import { Address, Attachment } from 'nodemailer/lib/mailer';
+
+export type SendMailerDto = {
+  from?: Address;
+  reciepients: Address[];
+  subject: string;
+  text?: string;
+  html: string;
+  placeholderReplacements?: Record<string, string>;
+  attachments?: Attachment[];
+};

src/node-mailer/mailer.module.ts

@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { ConfigModule } from '@nestjs/config';
+import { MailerService } from './mailer.service';
+import { MailerController } from './mailer.controller';
+
+@Module({
+  imports: [ConfigModule],
+  controllers: [MailerController],
+  providers: [MailerService, MailerController],
+  exports: [MailerService, MailerController],
+})
+export class MailerModule {}

src/node-mailer/mailer.service.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { MailerService } from './mailer.service';
+
+describe('MailerService', () => {
+  let service: MailerService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [MailerService],
+    }).compile();
+
+    service = module.get<MailerService>(MailerService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

src/node-mailer/mailer.service.ts

@@ -0,0 +1,58 @@
+import { Injectable } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import * as nodemailer from 'nodemailer';
+import { SendMailerDto } from './mailer.interface';
+import Mail from 'nodemailer/lib/mailer';
+
+@Injectable()
+export class MailerService {
+  constructor(
+    private readonly configService: ConfigService
+  ) {}
+  mailTransport() {
+    const transporter = nodemailer.createTransport({
+      service: 'gmail',
+      host: this.configService.get<string>('MAIL_HOST'),
+      auth: {
+        user: this.configService.get<string>('MAIL_USER'),
+        pass: this.configService.get<string>('MAIL_PASS'),
+      },
+      secure: true,
+      port: this.configService.get<number>('MAIL_PORT'),
+    });
+    return transporter;
+  }
+
+  template(html: string, replacements: Record<string, string>) {
+    return html.replace(/%(\w*)%/g, function (m, key) {
+      return replacements.hasOwnProperty(key) ? replacements[key] : '';
+    });
+  }
+
+  async sendMail(dto: SendMailerDto) {
+    const { from, reciepients, subject, attachments } = dto;
+    const html = dto.placeholderReplacements
+      ? this.template(dto.html, dto.placeholderReplacements)
+      : dto.html;
+    const transporter = this.mailTransport();
+    const fromName = from?.name ?? this.configService.get<string>('APP_NAME');
+    const fromAddress =
+      from?.address ?? this.configService.get<string>('MAIL_USER');
+    const options: Mail.Options = {
+      from: {
+        name: fromName,
+        address: fromAddress,
+      },
+      to: reciepients,
+      subject,
+      html: this.template(html, dto.placeholderReplacements || {}),
+      attachments: attachments || [],
+    };
+    try {
+      const result = await transporter.sendMail(options);
+      return result;
+    } catch (er) {
+      console.log(er);
+    }
+  }
+}

src/node-mailer/templates/emailTemplate.html

@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Codevice Solutions Private Limited</title>
+    <style>
+        body {
+            font-family: Arial, sans-serif;
+            margin: 0;
+            padding: 0;
+            background-color: #f4f4f4;
+        }
+        .container {
+            width: 100%;
+            max-width: 400px;
+            margin: 0 auto;
+            background-color: #ffffff;
+            padding: 20px;
+            border-radius: 8px;
+            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
+        }
+        .header {
+            background-color: #4CAF50;
+            color: white;
+            padding: 10px 0;
+            text-align: center;
+            border-radius: 8px 8px 0 0;
+        }
+        .content {
+            padding: 20px;
+            line-height: 1.6;
+        }
+        .footer {
+            text-align: center;
+            padding: 10px 0;
+            color: #777;
+            font-size: 12px;
+        }
+        a {
+            color: #4CAF50;
+            text-decoration: none;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="header">
+            <h1>Codevice Solutions Private Limited</h1>
+        </div>
+        <div class="content">
+            <h2>Hello, {{name}}!</h2>
+            <p>Use the following OTP to login. OTP is valid for 5 mins. Do not share this OTP to anyone.</p>
+            <h2>{{otp}}</h2>
+            <p>Best regards,<br>CSPL</p>
+        </div>
+        <div class="footer">
+            <p>&copy; 2025 Codevice Solutions Pvt. Ltd. All rights reserved.</p>
+        </div>
+    </div>
+</body>
+</html>

src/qrcode/qrcode.controller.spec.ts

@@ -0,0 +1,20 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { QrcodeController } from './qrcode.controller';
+import { QrcodeService } from './qrcode.service';
+
+describe('QrcodeController', () => {
+  let controller: QrcodeController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [QrcodeController],
+      providers: [QrcodeService],
+    }).compile();
+
+    controller = module.get<QrcodeController>(QrcodeController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});

src/qrcode/qrcode.controller.ts

@@ -0,0 +1,41 @@
+import { Controller, Post, Body } from '@nestjs/common';
+import { QrService } from './qrcode.service';
+import { MailerService } from '../node-mailer/mailer.service';
+import { promises as fs } from 'fs';
+import { SendMailerDto } from '../node-mailer/mailer.interface';
+import { Address } from 'nodemailer/lib/mailer';
+
+@Controller('qr')
+export class QrController {
+  constructor(private readonly qrService: QrService, private readonly emailService: MailerService) {}
+
+  @Post('send')
+  async sendQrEmail(@Body() body: { email: string; data: string; subject: string; message: string }) {
+    const filePath = 'qrcode.png';
+    await this.qrService.generateQrCode(body.data, filePath);
+    const recipient: Address = {
+      name: 'Recipient',
+      address: body.email,
+    };
+    const mailDto: SendMailerDto = {
+      from: {
+        name: 'Your App Name', 
+        address: 'no-reply@yourapp.com',
+      },
+      reciepients: [recipient],
+      subject: body.subject,
+      html: `<p>${body.message}</p>`,
+      attachments: [
+        {
+          filename: 'qrcode.png',
+          path: filePath,
+        },
+      ],
+    };
+    await this.emailService.sendMail(mailDto);
+
+    await fs.unlink(filePath);
+
+    return { message: 'QR code email sent successfully!' };
+  }
+}

src/qrcode/qrcode.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { QrService } from './qrcode.service';
+import { QrController } from './qrcode.controller';
+import { MailerModule } from 'src/node-mailer/mailer.module';
+
+@Module({
+  imports: [MailerModule],
+  controllers: [QrController],
+  providers: [QrService],
+})
+export class QrcodeModule {}

src/qrcode/qrcode.service.spec.ts

@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { QrcodeService } from './qrcode.service';
+
+describe('QrcodeService', () => {
+  let service: QrcodeService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [QrcodeService],
+    }).compile();
+
+    service = module.get<QrcodeService>(QrcodeService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});

src/qrcode/qrcode.service.ts

@@ -0,0 +1,9 @@
+import { Injectable } from '@nestjs/common';
+import * as QRCode from 'qrcode';
+
+@Injectable()
+export class QrService {
+  async generateQrCode(data: string, filePath: string): Promise<void> {
+    await QRCode.toFile(filePath, data);
+  }
+}