import { readFileSync } from "fs";
import Handlebars from "handlebars";
import puppeteer from "puppeteer";

export abstract class PdfExport {
  static getTemplate(template: string) {
    return readFileSync(process.cwd() + "/src/templates/" + template, "utf8");
  }

  static async renderFile({
    template,
    title = "pdf-export Mitgliederverwaltung",
    filename,
    data,
  }: {
    template: string;
    title: string;
    filename: string;
    data: any;
  }) {
    const templateHtml = this.getTemplate(template);
    const templateCompiled = Handlebars.compile(templateHtml);
    const html = templateCompiled(data);

    const browser = await puppeteer.launch({
      headless: true,
      args: ["--no-sandbox", "--disable-gpu", "--disable-setuid-sandbox"],
    });
    const page = await browser.newPage();
    await page.setContent(html, { waitUntil: "domcontentloaded" });

    await page.pdf({
      path: process.cwd() + `/export/${filename}.pdf`, // Name der PDF-Datei
      format: "A4",
      printBackground: false,
      margin: {
        top: "15mm",
        bottom: "15mm",
        left: "10mm",
        right: "10mm",
      },
      displayHeaderFooter: true,
      headerTemplate: `<h1 style="font-size:10px; text-align:center; width:100%;">${title}</h1>`,
      footerTemplate: `
        <div style="font-size:10px; text-align:center; width:100%; color:#888;">
          Seite <span class="pageNumber"></span> von <span class="totalPages"></span>
        </div>
      `,
    });

    await browser.close();
  }
}