Se agregó el módulo para mandar emails masivos

src/app.module.ts

@@ -2,8 +2,13 @@ import { Module } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { MailModule } from './mail/mail.module';
+import {ExcelModule} from './excel/excel.module'
 @Module({
-  imports: [MailModule],
+  imports: [
+    MailModule,
+    ExcelModule,
+
+  ],
   controllers: [AppController],
   providers: [AppService],
 })

src/excel/excel.controller.ts

@@ -0,0 +1,14 @@
+import { Controller, Get } from '@nestjs/common';
+import { ExcelService } from './excel.service';
+
+@Controller('excel')
+export class ExcelController {
+  constructor(private readonly excelService: ExcelService) {}
+
+  @Get('read-emails')
+  async getEmails() {
+    const filePath = './src/excel_Usuarios/usuarios_fake.xlsx'; 
+    const emails = this.excelService.readEmailsFromExcel(filePath);
+    return { emails };
+  }
+}

src/excel/excel.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { ExcelService } from './excel.service';
+import { ExcelController } from './excel.controller';
+
+
+@Module({
+  providers: [ExcelService], // Servicio que maneja la lectura de Excel
+  controllers: [ExcelController], // Controlador con los endpoints
+  exports: [ExcelService], // Exportarlo si se usa en otros módulos
+})
+export class ExcelModule {}

src/excel/excel.service.ts

@@ -0,0 +1,36 @@
+import * as fs from 'fs';
+import * as XLSX from 'xlsx';
+import { Injectable } from '@nestjs/common';
+
+
+
+@Injectable()
+export class ExcelService {
+  readEmailsFromExcel(filePath: string): string[] {
+    console.log(` Verificando archivo en: ${filePath}`);
+
+    if (!fs.existsSync(filePath)) {
+      console.error(' Archivo Excel NO encontrado');
+      throw new Error('Archivo Excel no encontrado');
+    } else {
+      console.log('Archivo Excel encontrado');
+    }
+
+    const workbook = XLSX.readFile(filePath);
+    const sheetName = workbook.SheetNames[0];
+    const sheet = workbook.Sheets[sheetName];
+
+    const jsonData = XLSX.utils.sheet_to_json(sheet);
+    
+    console.log(`Datos extraídos:`, jsonData); 
+
+    // Extraer correos de la columna "Correo"
+    const emails = jsonData
+      .map((row: any) => row['Correo'])
+      .filter(email => email);
+
+    console.log(` Correos extraídos:`, emails); 
+
+    return emails;
+  }
+}

src/mail/mail.controller.ts

@@ -6,6 +6,7 @@ import {
   UseInterceptors,
 } from '@nestjs/common';
 import { MailService } from './mail.service';
+import { ExcelService } from 'src/excel/excel.service';
 import { FileInterceptor } from '@nestjs/platform-express';
 import * as fs from 'fs';
 import * as csv from 'csv-parser';
@@ -15,7 +16,10 @@ import { ApiTags } from '@nestjs/swagger';
 @ApiTags('Mail') // Grupo de endpoints
 @Controller('mail')
 export class MailController {
-  constructor(private readonly mailService: MailService) {}
+  constructor(
+    private readonly mailService: MailService,
+    private readonly excelService: ExcelService
+  ) {}
 
   // Endpoint para enviar correos a través de una solicitud POST
   @Post('send')
@@ -26,6 +30,21 @@ export class MailController {
     return result;
   }
 
+  @Post('send-excel')
+  async sendMailExcel() {
+    
+    const emails=this.excelService.readEmailsFromExcel('./src/excel_Usuarios/usuarios_fake.xlsx');
+    for (const email of emails) {
+      try {
+        await this.mailService.sendMail(email, "subject", "text");
+        console.log(`📧 Enviado a: ${email}`);
+      } catch (error) {
+        console.error(`❌ Error enviando a ${email}:`, error.message);
+      }
+    }
+  }
+
+
   @Post('send-bulk')
   //@UseInterceptors(FileInterceptor('file'))
   @UseInterceptors(

src/mail/mail.module.ts

@@ -1,9 +1,11 @@
 import { Module } from '@nestjs/common';
 import { MailService } from './mail.service';
 import { MailController } from './mail.controller';
+import { ExcelModule } from 'src/excel/excel.module';
 
 @Module({
   providers: [MailService],
+  imports: [ExcelModule],
   controllers: [MailController],
   exports: [MailService], // Exportar si otros módulos necesitan usar el MailService
 })

src/mail/mail.service.ts

@@ -1,6 +1,8 @@
 import { Injectable } from '@nestjs/common';
 import * as nodemailer from 'nodemailer';
 import * as dotenv from 'dotenv';
+
+
 dotenv.config();
 
 @Injectable()