file upload and store

backend/routes/attachments/new.js

@@ -0,0 +1,70 @@
+const express = require("express");
+const router = express.Router();
+const path = require("path");
+const fs = require("fs");
+const multer = require("multer");
+const defineAttachment = require("../../models/attachments");
+const { DataTypes } = require("sequelize");
+
+module.exports = function (sequelize) {
+  const Attachment = defineAttachment(sequelize, DataTypes);
+
+  // Create uploads folder if it does not exist
+  const uploadDir = path.join(__dirname, "../../public/uploads");
+  if (!fs.existsSync(uploadDir)) {
+    fs.mkdirSync(uploadDir, { recursive: true });
+  }
+
+  const storage = multer.diskStorage({
+    destination: (req, file, cb) => {
+      cb(null, uploadDir);
+    },
+    filename: async (req, file, cb) => {
+      const ext = path.extname(file.originalname);
+      const baseName = path.basename(file.originalname, ext);
+      let fileName = `${baseName}${ext}`;
+
+      // Check if a file with the same name already exists
+      let fileExists = true;
+      let fileIndex = 1;
+      while (fileExists) {
+        const filePath = path.join(uploadDir, fileName);
+        if (fs.existsSync(filePath)) {
+          // If a file with the same name exists, add an index and rename the file
+          fileName = `${baseName}_${fileIndex}${ext}`;
+          fileIndex++;
+        } else {
+          fileExists = false;
+        }
+      }
+
+      cb(null, fileName);
+    },
+  });
+
+  const upload = multer({ storage });
+
+  router.post("/", upload.array("files", 10), async (req, res) => {
+    try {
+      const files = req.files;
+      if (files.length === 0) {
+        return res.status(400).json({ error: "No files uploaded" });
+      }
+
+      const host = req.get("host");
+      const protocol = req.protocol;
+      const attachmentsData = files.map((file) => ({
+        title: file.originalname,
+        path: `${protocol}://${host}/uploads/${file.filename}`,
+      }));
+
+      const newAttachments = await Attachment.bulkCreate(attachmentsData);
+
+      res.json(newAttachments);
+    } catch (error) {
+      res.status(500).json({ error: "Internal server error" });
+    }
+  });
+
+  return router;
+};