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/index.ts

@@ -0,0 +1,66 @@
+import express from "express";
+import helmet from "helmet";
+import rateLimit from "express-rate-limit";
+import { convertRouter } from "./routes/convert.js";
+import { templatesRouter } from "./routes/templates.js";
+import { healthRouter } from "./routes/health.js";
+import { authMiddleware } from "./middleware/auth.js";
+import { initBrowser, closeBrowser } from "./services/browser.js";
+
+const app = express();
+const PORT = parseInt(process.env.PORT || "3100", 10);
+
+app.use(helmet());
+app.use(express.json({ limit: "2mb" }));
+app.use(express.text({ limit: "2mb", type: "text/*" }));
+
+// Rate limiting: 100 req/min for free tier
+const limiter = rateLimit({
+  windowMs: 60_000,
+  max: 100,
+  standardHeaders: true,
+  legacyHeaders: false,
+});
+app.use(limiter);
+
+// Public
+app.use("/health", healthRouter);
+
+// Authenticated
+app.use("/v1/convert", authMiddleware, convertRouter);
+app.use("/v1/templates", authMiddleware, templatesRouter);
+
+// Root
+app.get("/", (_req, res) => {
+  res.json({
+    name: "DocFast API",
+    version: "0.1.0",
+    docs: "/health",
+    endpoints: [
+      "POST /v1/convert/html",
+      "POST /v1/convert/markdown",
+      "POST /v1/templates/:id/render",
+      "GET  /v1/templates",
+    ],
+  });
+});
+
+async function start() {
+  await initBrowser();
+  app.listen(PORT, () => console.log(`DocFast API running on :${PORT}`));
+
+  const shutdown = async () => {
+    console.log("Shutting down...");
+    await closeBrowser();
+    process.exit(0);
+  };
+  process.on("SIGTERM", shutdown);
+  process.on("SIGINT", shutdown);
+}
+
+start().catch((err) => {
+  console.error("Failed to start:", err);
+  process.exit(1);
+});
+
+export { app };