// const CryptoJS = require('crypto-js');
import Base64 from 'crypto-js/enc-base64'
import Utf8 from 'crypto-js/enc-utf8'
import AES from 'crypto-js/aes'
import SHA1 from 'crypto-js/sha1'
import MD5 from 'crypto-js/md5'
import SparkMD5 from 'spark-md5'

if (!uni.getStorageSync('deviceId')) {
  uni.setStorageSync('deviceId', Math.floor(Math.random() * 1000) + '-' + Date.now())
}
export const DEVICE_ID = uni.getStorageSync('deviceId')

export const getBase64 = (content) => {
  const words = Utf8.parse(content)
  const base64Str = Base64.stringify(words)

  return base64Str
}

export const getAES = (content) => {
  const KEY = '1234567890123456'
  const IV = '1234567890123456'

  var key = Utf8.parse(KEY)
  var iv = Utf8.parse(IV)
  var encrypted = AES.encrypt(content, key, { iv: iv })
  return encrypted.toString()
}

/**
 * 获取authorisation
 * @param {Object} infos 相关信息
 * @param {String} type 类别：secret、token两种
 */
export const getAuthorization = (infos, type) => {
  if (type === 'secret') {
    const str = `${infos.method.toLowerCase()}&${infos.uri}&${infos.timestamp}&${infos.accessSecret}`
    const sign = Base64.stringify(SHA1(str))
    return `Secret ${infos.accessKey}:${sign}`
  } else if (type === 'token') {
    const str = `${infos.method.toLowerCase()}&${infos.uri}&${infos.timestamp}&${infos.token}`
    const sign = Base64.stringify(SHA1(str))
    return `Token ${infos.sessionId}:${sign}`
  }
}

/**
 *
 * @param {any} str 字符串
 */
export const getMD5 = (content) => {
  return MD5(content)
}

export const getFileMD5 = (dataFile) => {
  return new Promise((rs, rj) => {
    var fileReader = new FileReader()
    var spark = new SparkMD5() //创建md5对象（基于SparkMD5）
    if (dataFile.size > 1024 * 1024 * 10) {
      var data1 = dataFile.slice(0, 1024 * 1024 * 10) //将文件进行分块 file.slice(start,length)
      fileReader.readAsBinaryString(data1) //将文件读取为二进制码
    } else {
      fileReader.readAsBinaryString(dataFile)
    }
    fileReader.onload = function (e) {
      spark.appendBinary(e.target.result)
      var md5 = spark.end()
      rs(md5)
    }
    fileReader.onerror = function (err) {
      rj(err)
    }
  })
}