feat: full studio build -- light theme, canvas thumbnails, i18n (fa/en)

server/render-worker.ts

@@ -0,0 +1,71 @@
+/**
+ * Standalone render worker — run: npm run render-worker
+ * POST /process { jobId } — requires RENDER_WORKER_SECRET if set
+ */
+import http from "node:http";
+
+import { processRenderJob } from "./render-job-processor";
+
+const PORT = Number(process.env.RENDER_WORKER_PORT ?? 3355);
+const SECRET = process.env.RENDER_WORKER_SECRET;
+
+function isAuthorized(request: http.IncomingMessage): boolean {
+  if (!SECRET) return true;
+  const header = request.headers.authorization;
+  return header === `Bearer ${SECRET}`;
+}
+
+function readBody(request: http.IncomingMessage): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const chunks: Buffer[] = [];
+    request.on("data", (chunk) => chunks.push(Buffer.from(chunk)));
+    request.on("end", () => resolve(Buffer.concat(chunks).toString("utf8")));
+    request.on("error", reject);
+  });
+}
+
+const server = http.createServer(async (request, response) => {
+  const url = request.url ?? "/";
+
+  if (request.method === "GET" && url === "/health") {
+    response.writeHead(200, { "Content-Type": "application/json" });
+    response.end(JSON.stringify({ ok: true }));
+    return;
+  }
+
+  if (request.method === "POST" && url === "/process") {
+    if (!isAuthorized(request)) {
+      response.writeHead(401, { "Content-Type": "application/json" });
+      response.end(JSON.stringify({ error: "Unauthorized" }));
+      return;
+    }
+
+    try {
+      const body = JSON.parse(await readBody(request)) as { jobId?: string };
+      if (!body.jobId) {
+        response.writeHead(400, { "Content-Type": "application/json" });
+        response.end(JSON.stringify({ error: "jobId required" }));
+        return;
+      }
+
+      response.writeHead(202, { "Content-Type": "application/json" });
+      response.end(JSON.stringify({ accepted: true, jobId: body.jobId }));
+
+      void processRenderJob(body.jobId).catch((err) => {
+        console.error(`Render job ${body.jobId} failed:`, err);
+      });
+    } catch {
+      response.writeHead(400, { "Content-Type": "application/json" });
+      response.end(JSON.stringify({ error: "Invalid JSON" }));
+    }
+    return;
+  }
+
+  response.writeHead(404, { "Content-Type": "application/json" });
+  response.end(JSON.stringify({ error: "Not found" }));
+});
+
+server.listen(PORT, () => {
+  console.log(`Render worker listening on http://localhost:${PORT}`);
+  console.log("Endpoints: GET /health, POST /process");
+});