maestro/src/utils/FileParser/pdf-parser.ts

import puppeteer from 'puppeteer';
import { Parser } from './parser.interface';
import { HtmlParser } from './html-parser';

export class PDFParser<T> implements Parser<T> {
  constructor(private htmlParser: HtmlParser<T>) {}

  async parse(data: T[]) {
    try {
      const browser = await puppeteer.launch({
        executablePath: process.env.PUPPETEER_EXECUTABLE_PATH,
        args: [
          '--no-sandbox',
          '--disable-setuid-sandbox',
          '--disable-dev-shm-usage',
        ],
      });

      const page = await browser.newPage();
      page.setDefaultNavigationTimeout(0);

      const html = await this.htmlParser.parse(data);
      await page.setContent(html, {
        waitUntil: 'networkidle0',
        timeout: 30000,
      });

      // Configurações adicionais para garantir um PDF válido
      const pdf = await page.pdf({
        format: 'A4',
        printBackground: true,
        margin: {
          top: '20mm',
          right: '15mm',
          bottom: '20mm',
          left: '15mm',
        },
        preferCSSPageSize: true,
        displayHeaderFooter: false,
        headerTemplate: '',
        footerTemplate: '',
        omitBackground: false,
        pageRanges: '',
        tagged: true,
        outline: false,
        timeout: 30000,
      });

      await browser.close();

      return Buffer.from(pdf);
    } catch (error) {
      console.error('Error generating PDF:', error);
      throw error;
    }
  }
}