add testing suite

src/generatePDF.js

@@ -0,0 +1,44 @@
+import puppeteer from "puppeteer";
+import { dungeonTemplate } from "./dungeonTemplate.js";
+import fs from "fs/promises";
+
+export async function generatePDF(data, outputPath = "dungeon.pdf") {
+  const browser = await puppeteer.launch({
+    args: ["--no-sandbox", "--disable-setuid-sandbox"],
+  });
+
+  const page = await browser.newPage();
+
+  const toBase64DataUrl = (buffer) =>
+    `data:image/png;base64,${buffer.toString("base64")}`;
+
+  const readImageData = async (path) =>
+    fs
+      .readFile(path)
+      .then(toBase64DataUrl)
+      .catch(() => {
+        console.warn(
+          "Warning: Could not read image file, proceeding without map in PDF",
+        );
+        return null;
+      });
+
+  const imageData = data.map ? await readImageData(data.map) : null;
+  const dataWithImage = imageData
+    ? { ...data, map: imageData }
+    : (({ map, ...rest }) => rest)(data); // eslint-disable-line no-unused-vars
+
+  const html = dungeonTemplate(dataWithImage);
+  await page.setContent(html, { waitUntil: "networkidle0" });
+
+  await page.pdf({
+    path: outputPath,
+    format: "A4",
+    landscape: true,
+    printBackground: true,
+    preferCSSPageSize: true,
+  });
+
+  await browser.close();
+  console.log(`Dungeon PDF saved to ${outputPath}`);
+}