const path = require('path')

function checkFile(req, file, cb){

    // Allowed ext
    const filetypes = /zip/;
    // String Syntax
    const stringSyntax = new RegExp(/^99(MEX|MEY|IEB|IEC)\d{6}_\d{12}\.zip$/im)
    // Check ext
    const extname = filetypes.test(path.extname(file.originalname).toLowerCase());
    // Check mime
    const mimetype = filetypes.test(file.mimetype);
    // Check Syntax
    const syntax = stringSyntax.test(path.extname(file.originalname).toLowerCase())

    console.log(file.originalname)
    console.log(syntax)


    if(mimetype){
      return cb(null,true);
    } else {
      cb('Error: .zip only or syntax error!');
    }
  }

  module.exports = checkFile