// Set The Storage Engine
const storage = multer.diskStorage({
  destination: './public/uploads/',
  filename: (req, file, cb) => {
    cb(null, file.fieldname + '-' + Date.now() + path.extname(file.originalname));
  }
});

// Init Upload
const upload = multer({
  storage: storage,
  limits: { fileSize: 1024 * 1024 },
  fileFilter: (req, file, cb) => {
    checkFileType(file, cb);
  }
}).single('image');

// Check File Type
const checkFileType = (file, cb) => {
  // Allowed extensions
  const filetypes = /jpeg|jpg|png|gif/;
  // Check extension
  const extname = filetypes.test(path.extname(file.originalname).toLowerCase());
  // Check mime type
  const mimetype = filetypes.test(file.mimetype);

  if (mimetype && extname) {
    return cb(null, true);
  } else {
    cb('Error: Images Only!');
  }
};