import Vue from "vue";
import axios from "axios";
import qs from "qs";
import user from "@/store/modules/user";
const instance = axios.create({
  baseURL: process.env.VUE_APP_BASE_API,
  timeout: 5000,
  headers: {
    "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8"
  },
  transformRequest: [
    data => {
      if (typeof data !== "object") return data;
      let newData: IAny = {};
      Object.keys(data).forEach(key => {
        if ([null, undefined, ""].includes(data[key])) return;
        if (typeof data[key] === "object") {
          data[key] = JSON.stringify(data[key]);
        }
        newData[key] = data[key];
      });
      return qs.stringify(newData);
    }
  ]
});
instance.interceptors.response.use(
  x => x,
  err => ({
    data: {
      errno: -1,
      errmsg: "网络请求失败",
      data: err
    }
  })
);
const getResult: <T>(x: IBaseResult) => IResult<T> = <T>({
  data,
  errmsg,
  errno
}: IBaseResult<T>) => {
  if (errno === 0) return [null, data];
  return [{ errno, errmsg }, (data || {}) as T];
};
export const post: IRequest = async <T>(url: string, params: any) => {
  const { data } = await instance.post<IBaseResult<T>>(url, params);
  return getResult<T>(data);
};
export const get: IRequest = async <T>(url: string, params: any) => {
  const { data } = await instance.get<IBaseResult<T>>(url, { params });
  return getResult<T>(data);
};
export const post_auth: IRequest = async <T>(url: string, params: any) =>
  await post<T>(url, Object.assign({}, params, { token: user.Token }));
export const get_auth: IRequest = async <T>(url: string, params: any) =>
  await get<T>(url, Object.assign({}, params, { token: user.Token }));
export default {
  install(vue: typeof Vue) {
    Object.assign(vue.prototype, {
      $get: get,
      $post: post,
      $get_auth: get_auth,
      $post_auth: post_auth
    });
  }
};