/**
 * Copyright © 2020-present LiuDanYang. All rights Reserved.
 */
 
const axios = (function () {
  class Axios {
    constructor() {
      this.defaults = { baseUrl: "" }
      this.interceptors = { request: new InterceptorManager(), response: new InterceptorManager() }
    }
 
    wxRequest(c) {
      return new Promise((resolve, reject) => {
        c = this.interceptors.request.func(c)
        c.url = c.url.startsWith("http") ? c.url : c.baseUrl + c.url
        c.success = (res) => {
          resolve(this.interceptors.response.func(res))
        }
        c.enableHttpDNS = true,
        c.httpDNSServiceId = 'wxa410372c837a5f26',
        c.fail = (res) => {
          reject(this.interceptors.response.func(res))
        }
        wx.request(c)
      })
    }
  }
 
  Array.prototype.forEach.call(["options", "get", "head", "post", "put", "delete", "trace", "connect"], function (m) {
      Axios.prototype[m] = function (url, data, config) {
        return this.wxRequest(
          merge( this.defaults, { url: url, method: m, data: data }, config || {} )
        )
      }
    }
  )
 
  class InterceptorManager {
    constructor() {
      this.func = function (data) {
        return data
      }
    }
    use(fn) {
      this.func = fn
    }
  }
 
  function merge(axiosDefaultConfig, data, config) {
    let cloneAxios = deepClone(axiosDefaultConfig)
    let cloneData = deepClone(data)
    let cloneConfig = deepClone(config)
    return Object.assign(cloneAxios, cloneData, cloneConfig)
  }
 
  // 深拷贝
  function deepClone(obj) {
    let _obj = JSON.stringify(obj), objClone = JSON.parse(_obj)
    return objClone
  }
  return new Axios()
})()
 
export default axios