import qs from 'qs'
import store from '@/store'
import {
  timeout,
  request,
  httpTimeout
} from '@/server/common/request_helper'
import router from '@/router'
import toast from '@/components/common/toasted'
import {
  json2url,
  json2path,
  json2formData
} from '@/components/common/util'
require('es6-promise').polyfill()
require('isomorphic-fetch')

// 刷新token函数
export const refreshToken = () => {
  let refresh = JSON.parse(sessionStorage.getItem('loginedInfo')).refresh_token
  let access = JSON.parse(sessionStorage.getItem('loginedInfo')).access_token.replace('bearer ', '')
  let opts = {
    method: 'POST',
    headers: {
      'Content-Type': 'application/x-www-form-urlencoded'
    },
    body: 'refresh_token=' + refresh + '&access_token=' + access
  }
  return fetch(request('/data/api-u/sys/refresh_token'), opts)
    .then(res => res.json())
    .then(json => {
      if (!json.code) {
        const loginedInfo = {
          'access_token': json.token_type + ' ' + json.access_token,
          'refresh_token': json.refresh_token
        }
        sessionStorage.setItem('loginedInfo', JSON.stringify(loginedInfo))
        sessionStorage.setItem('expires_in', json.expires_in)
        return {
          loginedInfo,
          expires_in: json.expires_in
        }
      } else {
        sessionStorage.removeItem('loginedInfo')
        sessionStorage.removeItem('expires_in')
        sessionStorage.removeItem('userInfo')
        router.push({
          path: '/login'
        })
        toast({
          type: 'warning',
          message: '登陆过期，请重新登陆'
        })
      }
    })
}

export const Frequest = ({
  method,
  url,
  type,
  body,
  header,
  isLoading = true
}) => {
  method = method.toUpperCase()
  if (body && (method === 'GET' || method === 'DELETE')) {
    if (type && type === 'path') {
      url = url + '/' + json2path(body)
    } else {
      url = url + '?' + json2url(body)
    }
    body = undefined
  } else {
    if (type && type === 'formData') {
      body = body && json2formData(body)
    } else if (header && header['Content-Type'] === 'application/x-www-form-urlencoded') {
      body = body && qs.stringify(body)
    } else {
      body = body && JSON.stringify(body)
    }
  }
  let contentType = (method === 'GET' || method === 'DELETE') ? 'application/x-www-form-urlencoded;' : (type === 'formData') ? 'multipart/form-data;' : 'application/json;'
  let token = sessionStorage.getItem('loginedInfo') && JSON.parse(sessionStorage.getItem('loginedInfo')).access_token
  let routerJson = router.history.current.query
  let opts = {
    method,
    headers: {
      'Content-Type': contentType
    },
    body
  }
  /* 获取token 两种方式 */
  if (token && token !== '') {
    opts.headers.Authorization = token
  } else if (routerJson.loginedInfo && routerJson.loginedInfo !== '') {
    opts.headers.Authorization = routerJson.loginedInfo && JSON.parse(routerJson.loginedInfo).access_token
  }
  if (header) {
    for (let name in header) {
      opts.headers[name] = header[name]
    }
  }
  /* 用于londing开启 start */
  let isResult = false
  let loadingCount = 0
  let timer = setInterval(() => {
    loadingCount++
    if (!isResult && loadingCount > 50 && isLoading) {
      store.commit('HANDLE_LOADING_OPEN')
      clearInterval(timer)
    }
  }, 10)
  /* 用于londing开启 end */
  return fetch(request(url), opts)
    .then(res => {
      if (res.ok || res.status === 400) {
        return res.json()
      } else {
        throw httpTimeout(res)
      }
    })
    .then(json => {
      isResult = true
      // 执行token 刷新方法
      if (sessionStorage.getItem('expires_in') < 100) {
        refreshToken()
      }
      clearInterval(timer)
      isLoading && store.commit('HANDLE_LOADING_CLOSE')
      return json && json
    }).catch(error => {
      error && console.warn(error, 'error')
      isResult = true
      isLoading && store.commit('HANDLE_LOADING_CLOSE')
      timeout(error)
      // clearInterval(error)
      // return error
    })
}

export const httpGET = (url, json) => Frequest({
  method: 'GET',
  url,
  type: json && json.type,
  body: json && json.body,
  header: json && json.header,
  isLoading: json && json.isLoading
})
export const httpPOST = (url, json) => Frequest({
  method: 'POST',
  url,
  type: json && json.type,
  body: json && json.body,
  header: json && json.header,
  isLoading: json && json.isLoading
})
export const httpPUT = (url, json) => Frequest({
  method: 'PUT',
  url,
  type: json && json.type,
  body: json && json.body,
  header: json && json.header,
  isLoading: json && json.isLoading
})
export const httpDEL = (url, json) => Frequest({
  method: 'DELETE',
  url,
  type: json && json.type,
  body: json && json.body,
  header: json && json.header,
  isLoading: json && json.isLoading
})