Initial MVP: DocFast PDF API

- HTML/Markdown to PDF conversion via Puppeteer
- Invoice and receipt templates
- API key auth + rate limiting
- Dockerfile for deployment

src/routes/templates.ts

@@ -0,0 +1,43 @@
+import { Router, Request, Response } from "express";
+import { renderPdf } from "../services/browser.js";
+import { templates, renderTemplate } from "../services/templates.js";
+
+export const templatesRouter = Router();
+
+// GET /v1/templates — list available templates
+templatesRouter.get("/", (_req: Request, res: Response) => {
+  const list = Object.entries(templates).map(([id, t]) => ({
+    id,
+    name: t.name,
+    description: t.description,
+    fields: t.fields,
+  }));
+  res.json({ templates: list });
+});
+
+// POST /v1/templates/:id/render — render template to PDF
+templatesRouter.post("/:id/render", async (req: Request, res: Response) => {
+  try {
+    const id = req.params.id as string;
+    const template = templates[id];
+    if (!template) {
+      res.status(404).json({ error: `Template '${id}' not found` });
+      return;
+    }
+
+    const data = req.body;
+    const html = renderTemplate(id, data);
+    const pdf = await renderPdf(html, {
+      format: data._format || "A4",
+      margin: data._margin,
+    });
+
+    const filename = data._filename || `${id}.pdf`;
+    res.setHeader("Content-Type", "application/pdf");
+    res.setHeader("Content-Disposition", `inline; filename="${filename}"`);
+    res.send(pdf);
+  } catch (err: any) {
+    console.error("Template render error:", err);
+    res.status(500).json({ error: "Template rendering failed", detail: err.message });
+  }
+});