nodejs_upload_file4.js

// Create an express app
const PORT = 5000; // Best practice use environment variable
const HOST = "http://localhost"; // Best practice use environment variable
const app = express();
app.use(express.json());

app.post("/uploads", upload.single("file"), (req, res) => {
  const file = req.file;

  if (!file) {
    return res.status(400).json({
      message: "File not found!",
    });
  } else if (!validateFileTypes(file)) {
    deleteFile(file);
    return res.status(400).json({
      message: "Unsupported file format",
    });
  }

  return res.status(200).json({
    message: "File uploaded succesfully",
    data: {
      url: `${HOST}:${PORT}/uploads/${file.filename}`,
    },
  });
});

app.get("/uploads/:filename", (req, res) => {
  const file = req.params.filename;
  const filePath = path.join(__dirname, "uploads", file);

  if (!fs.existsSync(filePath)) {
    return res.status(404).json({
      message: "File not found",
    });
  }

  return res.sendFile(filePath);
});

app.listen(PORT, () => {
  console.log(`Server run on ${PORT}`);
});