cleaned up node server

server-node/routes/api/operations.js

@@ -0,0 +1,25 @@
+
+import { rotatePages } from '../../src/pdf-operations.js'
+
+import express from 'express';
+const router = express.Router();
+import multer from 'multer'
+const upload = multer();
+
+router.post('/rotate-pdf', upload.single("pdfFile"), async function(req, res, next) {
+    console.debug("rotating pdf:", req.file)
+
+    const rotated = await rotatePages(req.file.buffer, 90)
+
+    // add '_rotated' just before the file extension
+    const newFilename = req.file.originalname.replace(/(\.[^.]+)$/, '_rotated$1');
+
+    res.writeHead(200, {
+        'Content-Type': "application/pdf",
+        'Content-disposition': 'attachment;filename=' + newFilename,
+        'Content-Length': rotated.length
+    });
+    res.end(Buffer.from(rotated, 'binary'))
+});
+
+export default router;