const utils = require('web3-utils')
/**
 * @function isPrivateKey
 * @desc check if private key is in right format
 * @param {string} - privateKey
 * @return {boolean} - valid
 */
export const isPrivateKey = (privateKey: string) => {
  if (!privateKey) {
    console.warn('No Private Key')
    return false
  }
  if (typeof privateKey !== 'string') {
    console.warn('Invalid Type of Private Key')
    return false
  }
  const pk = privateKey.replace(/^0x/, '')
  if (pk.length !== 64) {
    console.warn('Invalid Length of Private Key')
    return false
  }
  if (!utils.isHex(pk)) {
    console.warn('Invalid Hex of Private Key')
    return false
  }
  return true
}

export default {
  isPrivateKey
}