import axios from 'axios'
import qs from 'qs'

let api_secret = '935bda53552e49cd56fc'
// 基礎配置
if (process.env.NODE_ENV === 'production') {
  // axios.defaults.baseURL = 'https://' //線上版本域名
  // api_secret = '84a58d7e0c1c89c4c57b41f4f396a45c' //線上版本秘鑰
  axios.defaults.baseURL = 'https://' //開發(fā)版本域名
  api_secret = '935bda53552e49cd56' //開發(fā)版本秘鑰
} else {
  axios.defaults.baseURL = 'https://' //開發(fā)版本域名
  api_secret = '935bda53552e49cd56fc' //開發(fā)版本秘鑰
}
axios.defaults.headers.post = {
  'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
}
axios.defaults.timeout = 10000

let cancel
const promiseArr = {}
const CancelToken = axios.CancelToken

axios.interceptors.request.use(
  config => {
    if (process.env.NODE_ENV === 'production') {
    //請求頭這里加參數(shù)這里加參數(shù)這里加參數(shù)這里加參數(shù)這里加參數(shù)
      let setSecret = getSecret()
      config.headers['nonce'] = setSecret.nonce
      config.headers['timestamp'] = setSecret.timestamp
      config.headers['signature'] = setSecret.secret
    }

    // 發(fā)起請求時，取消掉當前正在進行的相同請求
    if (promiseArr[config.url]) {
      // promiseArr[config.url]('操作取消')
      promiseArr[config.url] = cancel
    } else {
      promiseArr[config.url] = cancel
    }

    return config
  },
  error => {
    return Promise.reject(error)
  }
)

axios.interceptors.response.use(
  response => {
    return response
  },
  error => {
    return Promise.resolve(error.response)
  }
)

function checkStatus(response) {
  // loading
  // 如果http狀態(tài)碼正常，則直接返回數(shù)據(jù)
  if (
    response &&
    (response.status === 200 ||
      response.status === 304 ||
      response.status === 400)
  ) {
    return response
    // 如果不需要除了data之外的數(shù)據(jù)，可以直接 return response.data
  }
  // 異常狀態(tài)下，把錯誤信息返回去
  return {
    status: -404,
    msg: '網(wǎng)絡異常'
  }
}

function checkCode(res) {
  // 如果code異常(這里已經(jīng)包括網(wǎng)絡錯誤，服務器錯誤，后端拋出的錯誤)，可以彈出一個錯誤提示，告訴用戶
  if (res.status === -404) {
    console.warn(res.msg)
  }

  return res
}
// 共用方法獲取簽名
function getSecret() {
  let nonce = getNonce()
  let timestamp = getTimestamp()
  let secret = sha1(api_secret + nonce + timestamp)
  let obj = {
    nonce: nonce,
    timestamp: timestamp,
    secret: secret,
  }
  return obj
}

// 隨機字符串
function getNonce() {
  let alphabet = 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM'
  let strlenght = 8 /// 生成的字符串固定長度
  let $num = ''
  for (var i = 0; i < strlenght; i++) {
    $num = $num + alphabet[Math.floor(Math.random() * alphabet.length)]
  }
  return $num
}

// 時間戳
function getTimestamp() {
  let timestamp = Date.parse(new Date()) / 1000
  return timestamp
}
// 字符串加密成 hex 字符串
function sha1(s) {
  var data = new Uint8Array(encodeUTF8(s))
  var i, j, t;
  var l = ((data.length + 8) >>> 6 << 4) + 16,
    s = new Uint8Array(l << 2);
  s.set(new Uint8Array(data.buffer)), s = new Uint32Array(s.buffer);
  for (t = new DataView(s.buffer), i = 0; i < l; i++) s[i] = t.getUint32(i << 2);
  s[data.length >> 2] |= 0x80 << (24 - (data.length & 3) * 8);
  s[l - 1] = data.length << 3;
  var w = [],
    f = [
      function () {
        return m[1] & m[2] | ~m[1] & m[3];
      },
      function () {
        return m[1] ^ m[2] ^ m[3];
      },
      function () {
        return m[1] & m[2] | m[1] & m[3] | m[2] & m[3];
      },
      function () {
        return m[1] ^ m[2] ^ m[3];
      }
    ],
    rol = function (n, c) {
      return n << c | n >>> (32 - c);
    },
    k = [1518500249, 1859775393, -1894007588, -899497514],
    m = [1732584193, -271733879, null, null, -1009589776];
  m[2] = ~m[0], m[3] = ~m[1];
  for (i = 0; i < s.length; i += 16) {
    var o = m.slice(0);
    for (j = 0; j < 80; j++)
      w[j] = j < 16 ? s[i + j] : rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1),
      t = rol(m[0], 5) + f[j / 20 | 0]() + m[4] + w[j] + k[j / 20 | 0] | 0,
      m[1] = rol(m[1], 30), m.pop(), m.unshift(t);
    for (j = 0; j < 5; j++) m[j] = m[j] + o[j] | 0;
  };
  t = new DataView(new Uint32Array(m).buffer);
  for (var i = 0; i < 5; i++) m[i] = t.getUint32(i << 2);

  var hex = Array.prototype.map.call(new Uint8Array(new Uint32Array(m).buffer), function (e) {
    return (e < 16 ? "0" : "") + e.toString(16);
  }).join("");

  return hex;
}
// UTF8
function encodeUTF8(s) {
  var i, r = [],
    c, x;
  for (i = 0; i < s.length; i++)
    if ((c = s.charCodeAt(i)) < 0x80) r.push(c);
    else if (c < 0x800) r.push(0xC0 + (c >> 6 & 0x1F), 0x80 + (c & 0x3F));
  else {
    if ((x = c ^ 0xD800) >> 10 == 0) //對四字節(jié)UTF-16轉(zhuǎn)換為Unicode
      c = (x << 10) + (s.charCodeAt(++i) ^ 0xDC00) + 0x10000,
      r.push(0xF0 + (c >> 18 & 0x7), 0x80 + (c >> 12 & 0x3F));
    else r.push(0xE0 + (c >> 12 & 0xF));
    r.push(0x80 + (c >> 6 & 0x3F), 0x80 + (c & 0x3F));
  };
  return r;
}

export default {

  post(url, data) {
    return axios({
        method: 'post',
        url,
        data: qs.stringify(data),
        cancelToken: new CancelToken(c => {
          cancel = c
        })
      })
      .then(response => {
        return checkStatus(response)
      })
      .then(res => {
        return checkCode(res)
      })
  },
  postFormdata(url, data) {
    return axios({
        method: 'post',
        url,
        data,
        headers: {
          'Content-Type': 'multipart/form-data'
        }
      })
      .then(response => {
        return checkStatus(response)
      })
      .then(res => {
        return checkCode(res)
      })
  },
  get(url, query) {
    return axios({
      method: 'get',
      url,
      params: query,
      cancelToken: new CancelToken(c => {
        cancel = c
      })
    }).then(response => {
      return checkStatus(response)
    }).then(res => {
      return checkCode(res)
    })
  }
}

// 封裝好的接口文件

import axios from 'axios' ?// 關鍵代碼
const CancelToken = axios.CancelToken ? // 關鍵代碼

//方法傳參多加一個 that傳進去
export function userLoginCA(data, that) {
? return request({
? ? url: 'user/login',
? ? method: 'post',
? ? data,
? ? // 關鍵代碼 cancelToken
? ? cancelToken: new CancelToken(function executor(c) {
? ? ? that.cancel = c
? ? }) ??
? })
}

import { userLoginCA } from '@/api/user'


// 調(diào)用 userLoginCA 方法時除了需要的參數(shù)，記得傳this進去
?? ?userLoginCA({
? ? ? ? ? loginPath: this.loginCode.loginPath.CA,
? ? ? ? ? accountType: this.loginCode.accountType.NATURE
? ? ? ? },this)
? ? ? ? .then((res) => {})
? ? ? ? .catch((res) => {})
? ? }

// 如頁面銷毀的生命周期
? ? destroyed() {
? ? ?? ?console.log('退出頁面')
? ??? ??? ?this.cancel('請求已取消') // 關鍵代碼
? ? },