fix: pdf printing with puppeteer

Dockerfile

@@ -1,9 +1,19 @@
 FROM node:18-alpine AS build
 
+RUN apk add --no-cache \
+  chromium \
+  nss \
+  freetype \
+  harfbuzz \
+  ca-certificates \
+  ttf-freefont
+
 WORKDIR /app
 
 COPY package*.json ./
 
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
+
 RUN npm install
 
 COPY . /app
@@ -12,8 +22,21 @@ RUN npm run build
 
 FROM node:18-alpine AS prod
 
+RUN apk add --no-cache \
+  chromium \
+  nss \
+  freetype \
+  harfbuzz \
+  ca-certificates \
+  ttf-freefont
+
 WORKDIR /app
 
+RUN mkdir -p /app/export
+
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
+
+COPY --from=build /app/src/templates /app/src/templates
 COPY --from=build /app/dist /app/dist
 COPY --from=build /app/node_modules /app/node_modules
 COPY --from=build /app/package.json /app/package.json

package.json

@@ -27,6 +27,7 @@
     "cors": "^2.8.5",
     "dotenv": "^16.4.5",
     "express": "^5.0.0-beta.3",
+    "handlebars": "^4.7.8",
     "ics": "^3.8.1",
     "jsonwebtoken": "^9.0.2",
     "moment": "^2.30.1",
@@ -34,7 +35,7 @@
     "mysql": "^2.18.1",
     "node-schedule": "^2.1.1",
     "nodemailer": "^6.9.14",
-    "pdf-creator-node": "^2.3.5",
+    "puppeteer": "^23.11.1",
     "qrcode": "^1.5.4",
     "reflect-metadata": "^0.2.2",
     "socket.io": "^4.7.5",

src/controller/admin/protocolController.ts

@@ -231,7 +231,10 @@ export async function createProtocolPrintoutById(req: Request, res: Response): P
     year: "numeric",
   })}`;
 
-  let filename = `P_${protocol.title.replace(/[^a-zA-Z0-9]/g, "")}_${iteration + 1}_${new Date().toLocaleDateString()}`;
+  let filename = `${new Date().toISOString().split("T")[0]}_${iteration + 1}_Protokoll_${protocol.title.replace(
+    /[^a-zA-Z0-9]/g,
+    ""
+  )}`;
 
   await PdfExport.renderFile({
     template: "protocol.template.html",

src/helpers/pdfExport.ts

@@ -1,21 +1,6 @@
 import { readFileSync } from "fs";
-import pdf, { Options } from "pdf-creator-node";
-
-var options = (title: string = "pdf-export Mitgliederverwaltung"): Options => ({
-  format: "A4",
-  orientation: "portrait",
-  border: "10mm",
-  header: {
-    height: "10mm",
-    contents: `<h1 style="text-align: center;">${title}</h1>`,
-  },
-  footer: {
-    height: "5mm",
-    contents: {
-      default: '<span style="color: #444;">{{page}}</span>/<span>{{pages}}</span>',
-    },
-  },
-});
+import Handlebars from "handlebars";
+import puppeteer from "puppeteer";
 
 export abstract class PdfExport {
   static getTemplate(template: string) {
@@ -24,7 +9,7 @@ export abstract class PdfExport {
 
   static async renderFile({
     template,
-    title,
+    title = "pdf-export Mitgliederverwaltung",
     filename,
     data,
   }: {
@@ -33,12 +18,36 @@ export abstract class PdfExport {
     filename: string;
     data: any;
   }) {
-    let document = {
-      html: this.getTemplate(template),
-      data,
-      path: process.cwd() + `/export/${filename}.pdf`,
-    };
+    const templateHtml = this.getTemplate(template);
+    const templateCompiled = Handlebars.compile(templateHtml);
+    const html = templateCompiled(data);
 
-    await pdf.create(document, options(title));
+    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();
   }
 }

src/types/pdf-creator-node.d.ts

@@ -1,27 +0,0 @@
-// types/pdf-creator-node.d.ts
-declare module "pdf-creator-node" {
-  interface Document {
-    html: string;
-    data: any;
-    path: string;
-    type?: string;
-  }
-
-  interface Options {
-    format: string;
-    orientation: string;
-    border: string;
-    header?: {
-      height: string;
-      contents: string;
-    };
-    footer?: {
-      height: string;
-      contents: string | { [key: string]: string | number };
-    };
-  }
-
-  function create(document: Document, options: Options): Promise<any>;
-
-  export { create, Document, Options };
-}