/**
 * @author xiaoping
 * @email edwardhjp@gmail.com
 * @create date 2018-07-11 03:33:14
 * @modify date 2018-07-11 03:33:14
 * @desc [mtop通用封装]
 */

// import WindVane from '@ali/lib-windvane'
import WindVane from '../../../../lib/windvane.common.js'
// import Mtop from '@ali/lib-mtop/build/mtop.common'
import Mtop from '../../../../lib/mtop.common.js'
import { get } from 'jsonuri'

interface RequestOptions {
  api?: string
  v?: string
  data?: any,
  absAPI?: any
}

function __getLocalStorageItem (key): string | undefined {
  return get(window, `/localStorage/${key}`)
}

// 统一处理未登录
function __goLogin() {
  window.location.href = `https://login.m.taobao.com/login.htm?redirectURL=${encodeURIComponent(window.location.href)}`
}

function mtopNativeRequest (options: RequestOptions = {}): Promise<any> {
  let params = {
    ...{ version: '1.0', method: 'get', bizParams: options.data },
    ...options
  }
  params.version = options.v || params.version

  return new Promise((resolve, reject) => {
    WindVane.call('Mtop', 'request', params, resolve, reject)
  })
}

// 用户信息更改ls的__authInfo，mtop环境更改ls的__mtopEnv
function mtopH5Request (options: RequestOptions): Promise<any> {
  let params = {
    ...{
      // 通用参数
      // api: '', // 必须
      v: '1.0', // 必须
      // data: {}, // 必须（注意1）
      // appKey: '12574478', // 非必须，默认不需要传
      ecode: 0, // 必须（注意2）
      type: 'GET', // 非必须。请求类型（GET/POST），默认是GET
      dataType: 'jsonp', // 非必须。数据类型（jsonp/originaljsonp/json），默认jsonp
      timeout: 20000 // 非必须。接口超时设置，默认为20000ms
    },
    ...options
  }

  // 模拟authInfo
  const authInfo = __getLocalStorageItem('__authInfo')
  if (authInfo) {
    params.data.authInfo = authInfo
  }
  // 模拟mtop环境
  const mtopEnv = __getLocalStorageItem('__mtopEnv')
  if (mtopEnv) {
    // 是否是 api 为绝对值，如果是，不改变 api 地址
    if (params.absAPI) {
      delete params.absAPI
    } else {
      params.api = params.api + mtopEnv
    }
    const lib = window['lib']
    if (lib && /pre/.test(mtopEnv)) {
      lib.mtop.config.subDomain = 'wapa'
      lib.mtop.config.mainDomain = 'taobao.com'
      lib.mtop.config.prefix = 'h5api'
    }
  }

  return new Promise((resolve, reject) => {
    Mtop.request(params)
    .then(res => resolve(res.data))
    .catch(err => {
      if (err.retType === 2) {
        __goLogin()
      }
      reject(err)
    })
  })
}

export function mtopv2 (options: RequestOptions): Promise<any> {
  if (WindVane.isAvailable) {
    return mtopNativeRequest(options)
  }
  return mtopH5Request(options)
}

// 根据一定规则区分业务成功和失败，formatRes: { success: true, data: {} }
export function mtopFormat (options: RequestOptions, format?: Function | undefined): Promise<any> {
  if (!format) return mtopv2(options)
  return new Promise((resolve, reject) => {
    mtopv2(options)
      .then(res => {
        if (res.success) {
          const formatRes = format(res) || {}
          resolve(formatRes)
        } else {
          reject(res)
        }
      })
      .catch(err => {
        reject(err)
      })
  })
}