refactor: move Bytescale upload logic to backend for security

backend/src/routes/upload.routes.js

@@ -1,15 +1,35 @@
 import express from "express";
-import {upload} from "../controllers/upload.controller.js";
+import * as Bytescale from "@bytescale/sdk";
+import multer from "multer";
 
 const router = express.Router();
 
-router.post("/image", upload.single("image"), (req, res) => {
-	res.json({
-		success: 1,
-		file: {
-			url: `http://localhost:3000/uploads/blog/${req.file.filename}`,
-		},
-	});
+const uploadManager = new Bytescale.UploadManager({
+	apiKey: process.env.BYTESCALE_SECRET_API_KEY,
+});
+
+const storage = multer.memoryStorage();
+const upload = multer({storage});
+
+router.post("/", upload.single("file"), async (req, res) => {
+	try {
+		const file = req.file;
+		const {folderPath} = req.body;
+
+		const result = await uploadManager.upload({
+			data: file.buffer,
+			name: file.originalname,
+			mime: file.mimetype,
+			path: {
+				folderPath: folderPath || "/general",
+			},
+		});
+
+		res.json({fileUrl: result.fileUrl});
+	} catch (error) {
+		console.error(error);
+		res.status(500).json({error: "Upload failed"});
+	}
 });
 
 export default router;