correos_api/src/mail/mail.controller.ts

import {
  Controller,
  Post,
  Body,
  UploadedFile,
  UseInterceptors,
} from '@nestjs/common';
import { MailService } from './mail.service';
import { ExcelService } from 'src/excel/excel.service';
import { ApiTags } from '@nestjs/swagger';
import { ApiSendMail, ApiSendMailExcel} from './mail.decorators';


@ApiTags('Mail') // Grupo de endpoints
@Controller('mail')
export class MailController {
  constructor(
    private readonly mailService: MailService,
    private readonly excelService: ExcelService
  ) {}

  // Endpoint para enviar correos a través de una solicitud POST
  
  @Post('send')
  @ApiSendMail()
  async sendMail(@Body() body: { to: string; subject: string; text: string; fecha_recibido: Date }) {
    const { to, subject, text, fecha_recibido } = body;
    
    const result = await this.mailService.sendMail(to, subject, text, fecha_recibido);
    return result;
  }

  @Post('send-excel')
  @ApiSendMailExcel()
  async sendMailExcel(@UploadedFile() file: Express.Multer.File) {
    
    const emails=this.excelService.readEmailsFromExcel(file);
    let fechaActual: Date = new Date();
    
    for (const email of await emails) {
      try {
        await this.mailService.sendMail(email, "subject", "text", fechaActual);
        console.log(`📧 Enviado a: ${email}`);
      } catch (error) {
        console.error(`❌ Error enviando a ${email}:`, error.message);
      }
    }
  }
}