import cryptoJs from 'crypto-js'

const assetsUri = (src) => {
  if (src && (src.includes('https://') || src.includes('http://'))) {
    return src
  }
  return require(`~/static/${src}`)
}
function getUrlParams (params) {
  const urlObj = {}
  if (!window.location.search) { return false }
  const urlParams = window.location.search.substring(1)
  const urlArr = urlParams.split('&')
  for (let i = 0; i < urlArr.length; i++) {
    const urlArrItem = urlArr[i].split('=')
    urlObj[urlArrItem[0]] = urlArrItem[1]
  }
  // 判断是否有参数
  if (arguments.length >= 1) {
    return urlObj[params]
  }
  return urlObj
}
// const staticUri = (src) => {
//   if (src && (src.includes('https://') || src.includes('http://'))) {
//     return src
//   }
//   return require(`/static/${src}`)
// }


class Web3Utils {
  static base64UrlEncode (str) {
    let encodedSource = cryptoJs.enc.Base64.stringify(str)
    const reg = new RegExp('/', 'g')

    encodedSource = encodedSource.replace(/[=]+$/, '').replace(/\+/g, '-').replace(reg, '_')
    return encodedSource
  }

  static jiami (accounts) {
    const header = JSON.stringify({
      alg: 'HS256',
      typ: 'JWT'
    })

    const payload = JSON.stringify({
      address: accounts
    })

    const secretSalt = 'JCA3bTd8XW7pkJmQMJT1ZiY75uhwjrmXPvisjAzVcWlOQ5LvqF'

    const before_sign = `${Web3Utils.base64UrlEncode(cryptoJs.enc.Utf8.parse(header))}.${Web3Utils.base64UrlEncode(cryptoJs.enc.Utf8.parse(payload))}`

    let signature = cryptoJs.HmacSHA256(before_sign, secretSalt)

    signature = Web3Utils.base64UrlEncode(signature)

    return `${before_sign}.${signature}`
  }
}



export {
  assetsUri, getUrlParams,Web3Utils
}