Create server.js

server.js

@@ -0,0 +1,34 @@
+import express from "express";
+import sharp from "sharp";
+
+const app = express();
+
+app.use(express.raw({ type: "*/*", limit: "30mb" }));
+
+app.get("/health", (_req, res) => res.status(200).send("ok"));
+
+app.post("/convert", async (req, res) => {
+  try {
+    const token = process.env.CONVERTER_TOKEN;
+    const auth = req.headers.authorization || "";
+    if (!token || auth !== `Bearer ${token}`) {
+      return res.status(401).send("Unauthorized");
+    }
+
+    const input = req.body; // Buffer
+    if (!input || input.length === 0) return res.status(400).send("Empty body");
+
+    const jpeg = await sharp(input, { failOnError: false })
+      .rotate() // respect EXIF orientation
+      .jpeg({ quality: 85 })
+      .toBuffer();
+
+    res.setHeader("Content-Type", "image/jpeg");
+    res.status(200).send(jpeg);
+  } catch (e) {
+    res.status(500).send(String(e?.stack || e));
+  }
+});
+
+const port = process.env.PORT || 8080;
+app.listen(port, () => console.log(`converter listening on ${port}`));