import axios from 'axios'
import qs from 'qs'
import appData from './AppData'

var Http = {
  defaultTimeout: 20000
}

Http.ErrorCode = {
  NOT_NETWORK: -1, // 無網(wǎng)絡(luò),服務(wù)器無響應(yīng)
  SERVICE_ERROR: -2, // 服務(wù)器錯(cuò)誤，請求錯(cuò)誤返回碼不為：200
  PARSER_ERROR: -3, // 接口解析錯(cuò)誤
  API_ERROR: -4, // 接口錯(cuò)誤status不為：0
  REQUEST_ERROR: -5 // 請求之前錯(cuò)誤，
}

/**
 *
 * @param error error對象
 * @param errorCode  Http.ErrorCode
 * @param request  請求對象
 * @param response 響應(yīng)對象
 * @returns {*}
 * @constructor
 */
var creatHttpError = function (error, errorCode, request, response) {
  if (!error) {
    error = new Error()
  }
  error.errorCode = errorCode

  if (request) {
    error.request = request
  }

  if (response) {
    error.response = response
  }
  return error
}

// 創(chuàng)建新的實(shí)例
var axiosNew = axios.create({ timeout: Http.defaultTimeout})
axiosNew.defaults.withCredentials = true

// POST傳參序列化(添加請求攔截器)
axiosNew.interceptors.request.use(
  config => {
    config.headers = {
      // 'X-Requested-With': 'XMLHttpRequest',
      'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
    }
    // 在發(fā)送請求之前做某件事
    if (
      config.method === 'post' ||
      config.method === 'put' ||
      config.method === 'delete'
    ) {
      // 序列化
      config.data = qs.stringify(config.data)
    }
    return config
  },
  error => {
    let httpError = creatHttpError(error, Http.ErrorCode.REQUEST_ERROR, error.request, error.response)
    return Promise.reject(httpError)
  }
)

// 返回狀態(tài)判斷(添加響應(yīng)攔截器)
axiosNew.interceptors.response.use(
  res => {
    // 對響應(yīng)數(shù)據(jù)做些事
    if (res.status == 200) {
      if (res.data.state == 0) {
        return res.data.data
      } else {
        // 接口state不為0

        let httpError = creatHttpError(new Error('Api Error:' + res.data.data), Http.ErrorCode.API_ERROR, res.request, res)
        return Promise.reject(httpError)
      }
    } else {
      let httpError = creatHttpError(new Error('Server Error:' + res.status), Http.ErrorCode.SERVICE_ERROR, res.request, res)
      return Promise.reject(httpError)
    }
  },
  error => {
    if (error.response) {
      // 服務(wù)器有響應(yīng)
      let httpError = creatHttpError(error, Http.ErrorCode.SERVICE_ERROR, error.request, error.response)
      return Promise.reject(httpError)
    } else {
      // 無網(wǎng)絡(luò)或者服務(wù)器無響應(yīng)
      let httpError = creatHttpError(error, Http.ErrorCode.NOT_NETWORK, error.request, error.response)
      return Promise.reject(httpError)
    }
  }
)

/**
 this.$http.post(url,data).then((data)=>{

  }).catch((error)=>{

  })

 *
 * @param url
 * @param data
 * @returns {Promise<any>}
 */
Http.post = function (url, data) {
  return new Promise(function (resolve, reject) {
    axiosNew.post(url, data).then(function (data) {
      resolve(data)
    }).catch(function (error) {
      console.log('http-post-error:', error)
      reject(error)
    })
  })
}

/**
 this.$http.get(url,data).then((data)=>{

  }).catch((error)=>{

  })

 *
 * @param url
 * @param data
 * @returns {Promise<any>}
 */
Http.get = function (url, params) {
  return new Promise(function (resolve, reject) {
    axiosNew.get(url, {params: params}).then(function (data) {
      resolve(data)
    }).catch(function (error) {
      console.log('http-get-error:', error)
      reject(error)
    })
  })
}

/**
 *  延時(shí)請求，等下次頁面加載再去請求，跳轉(zhuǎn)頁面上報(bào)功能一般用這個(gè)
 * @param url
 * @param data
 */
Http.postWhenFreeTime = function (url, data) {
  // let requests = storage.getLocal('postWhenFreeTime',[])
  // requests.push({url:url,data:data})
  // storage.setLocal('postWhenFreeTime',requests)

  let requests = appData.postWhenFreeTime
  requests.push({url: url, data: data})
}

/**
 * 激活上報(bào)
 */
Http.startPost = function () {
  // setTimeout(function () {
  //   let requests = storage.getLocal('postWhenFreeTime',[])
  //   if(requests.length>0){
  //     let request = requests.shift()
  //     storage.setLocal('postWhenFreeTime',requests)
  //     Http.post(request.url,request.data).finally(function () {
  //       Http.startPost()
  //     })
  //   }
  // },1000)

  setTimeout(function () {
    let requests = appData.postWhenFreeTime
    if (requests.length > 0) {
      let request = requests.shift()
      Http.post(request.url, request.data).finally(function () {
        Http.startPost()
      })
    }
  }, 1000)
}

module.exports = Http