const args = process.argv.slice(2)
const fs = require('fs')
const file = args[0] || ''

const parseStyles = styles => styles
  .split(';')
  .filter(style => style.split(':')[0] && style.split(':')[1])
  .map(style => [
    style.split(':')[0].trim().replace(/-./g, c => c.substr(1).toUpperCase()),
    `'${style.split(':')[1].trim()}'`
  ].join(': ')).join(', ')

fs.readFile(file, 'utf8', (err, data) => {
  if (err) { return console.log(err) }

  const styleAttributes = data.match(/style=(?:"|')[^("|')]+./g)
  for (const attribute of styleAttributes) {
    const style = attribute.match(/style=(?:"|')([^("|')]+)/)[1]
    data = data.replace(attribute, `style={{${parseStyles(style)}}}`)
  }

  fs.writeFile(file, data, 'utf8', (err) => {
    if (err) return console.log(err)
  })
})