Add URL→PDF endpoint, usage tracking middleware, free tier limits

src/services/browser.ts

@@ -52,3 +52,40 @@ export async function renderPdf(
     await page.close();
   }
 }
+
+export async function renderUrlPdf(
+  url: string,
+  options: {
+    format?: string;
+    landscape?: boolean;
+    margin?: { top?: string; right?: string; bottom?: string; left?: string };
+    printBackground?: boolean;
+    waitUntil?: string;
+  } = {}
+): Promise<Buffer> {
+  if (!browser) throw new Error("Browser not initialized");
+
+  const page: Page = await browser.newPage();
+  try {
+    await page.goto(url, {
+      waitUntil: (options.waitUntil as any) || "networkidle0",
+      timeout: 30_000,
+    });
+
+    const pdf = await page.pdf({
+      format: (options.format as any) || "A4",
+      landscape: options.landscape || false,
+      printBackground: options.printBackground !== false,
+      margin: options.margin || {
+        top: "20mm",
+        right: "15mm",
+        bottom: "20mm",
+        left: "15mm",
+      },
+    });
+
+    return Buffer.from(pdf);
+  } finally {
+    await page.close();
+  }
+}