JorgeMike
120 lines
4.1 KiB
TypeScript
120 lines
4.1 KiB
TypeScript
import { HttpException, HttpStatus, Inject, Injectable, Res, UploadedFile } from '@nestjs/common';
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import { ConfigService } from '@nestjs/config';
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import { InjectRepository } from '@nestjs/typeorm';
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import * as nodemailer from 'nodemailer';
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import { EventosService } from 'src/eventos/eventos.service';
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import { Participante } from 'src/participante/participante.entity';
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import { Repository } from 'typeorm';
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import { EmailDto } from './dto/emailDto.dto';
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import * as xlsx from 'xlsx';
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import * as pdfMake from 'pdfmake/build/pdfmake';
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import * as pdfFonts from 'pdfmake/build/vfs_fonts';
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/* import * as PDFDocument from 'pdfkit'; */
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import * as fs from 'fs';
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import * as path from 'path';
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import { PDFDocument, StandardFonts, rgb } from 'pdf-lib';
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@Injectable()
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export class EmailService {
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private transporter;
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constructor(
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@InjectRepository(Participante)
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private participanteRepository: Repository<Participante>,
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private configService: ConfigService,
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) {
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this.transporter = nodemailer.createTransport({
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service: this.configService.get('NODEMAILER_SERVICE'),
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auth: {
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user: this.configService.get<string>('NODEMAILER_USER'),
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pass: this.configService.get<string>('NODEMAILER_PASWORD'),
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},
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});
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}
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async sendEmail(id: number, message: EmailDto) {
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const participantes = await this.getEmailDeParticipantes(id);
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participantes.map((res) => {
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const emailDestinatario = res.email;
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this.transporter.sendMail({
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to: emailDestinatario,
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subject: message.subject,
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text: message.text,
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});
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/*console.log("Email enviado a: ", res)*/
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});
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}
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async getEmailDeParticipantes(idEvento: number) {
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const participantes = await this.participanteRepository
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.createQueryBuilder('participante')
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.innerJoin('participante.eventosParticipante', 'eventoParticipante')
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.innerJoin('eventoParticipante.evento', 'evento')
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.where('evento.id_evento = :idEvento', { idEvento })
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.select(['participante.email'])
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.getMany();
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return participantes;
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}
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async sendConstancias(file, nombreEvento) {
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/* console.log(file) */
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const workbook = xlsx.read(file.buffer);
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const worksheet = workbook.Sheets[workbook.SheetNames[0]];
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const data = xlsx.utils.sheet_to_json(worksheet);
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for (const row of data as Row[]) {
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const pdfDoc = await PDFDocument.create();
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const page = pdfDoc.addPage();
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page.setSize(792, 612);
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const font = await pdfDoc.embedFont(StandardFonts.HelveticaBold);
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const fontSize = 30;
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const text = 'Constancia de asistencia';
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const textWidth = font.widthOfTextAtSize(text, fontSize);
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const textHeight = font.heightAtSize(fontSize);
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page.drawText(text, {
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x: (page.getWidth() - textWidth) / 2,
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y: (page.getHeight() - textHeight) / 2,
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size: fontSize,
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font: font,
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color: rgb(0/255, 0/255, 0/255),
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});
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const { width, height } = page.getSize();
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page.drawText(
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`Se le otorga la constancia por su asistencia al evento: ${nombreEvento}`,
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{
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x: 50,
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y: height - 50,
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size: 12,
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font: await pdfDoc.embedFont('Helvetica'),
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},
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);
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page.drawText(
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`A ${row['Apellido Paterno']} ${row['Apellido Materno']} ${row.Nombre}`,
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{
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x: 50,
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y: height - 80,
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size: 12,
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font: await pdfDoc.embedFont('Helvetica'),
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},
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);
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const pdfBytes = await pdfDoc.save();
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const attachment = {
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filename: `Constancia ${nombreEvento} - ${row.Nombre}_${row['Apellido Paterno']}.pdf`,
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content: pdfBytes,
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};
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/* const blob = new Blob([pdfBytes], { type: 'application/pdf' });
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const url = URL.createObjectURL(blob); */
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this.transporter.sendMail({
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to: row.Email,
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subject: `Constancia de asistencia a "${nombreEvento}"`,
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text: `¡Un saludo ${row.Nombre}! Aquí está tu constancia de asistencia por el evento "${nombreEvento}". Agradecemos tu asistencia y constancia, esperamos seguir viéndote en eventos futuros.`,
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attachments: [attachment],
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});
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}
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}
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}
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