/**
 * 通用uni-app网络请求
 * 基于 Promise 对象实现更简单的 request 使用方式，支持请求和响应拦截
 */
export default {
  config: {
    
    baseUrl: 'https://erpapi.fontree.cn',
    header: {
      "Content-Type": "application/json;charset=UTF-8",
      // 'Content-Type':'application/x-www-form-urlencoded'
    },
    data: {},
    method: "GET",
    dataType: "json" /* 如设为json，会对返回的数据做一次 JSON.parse */,
    responseType: "text",
    success() {},
    fail() {},
    complete() {},
  },
  interceptor: {
    request: null,
    response: null,
  },

  request(options) {
    if (!options) {
      options = {};
    }
    options.baseUrl = options.baseUrl || this.config.baseUrl;
    options.dataType = options.dataType || this.config.dataType;
    options.url = options.baseUrl + options.url;
    options.data = options.data || {};
    options.method = options.method || this.config.method;
    //TODO 加密数据
    options.header = options.header || this.config.header;
    //TODO 数据签名
    let _token = {
      Authorization: uni.getStorageSync("repari-token") || "undefined",
    };
    options.header = Object.assign({}, options.header, _token);

    return new Promise((resolve, reject) => {
      let _config = null;

      options.complete = async (response) => {
        let statusCode = response.statusCode;
        response.config = _config;
        if (this.interceptor.response) {
          let newResponse = this.interceptor.response(response);
          if (newResponse) {
            response = newResponse;
          }
        }
        if (response.data.code === 401) {
          // 若token过期则尝试获取RefreshToken重新获取token
          const newToken = await this.getRefreshToken();
          if (newToken) {
            // 更新token
            options.header.Authorization = newToken;
            // 重新发起请求
            uni.request(options);
          } else {
            // 若获取RefreshToken失败，则跳转到登录页
            uni.removeStorageSync("repari-token");
            uni.removeStorageSync("repari-user-info");
            uni.redirectTo({
              url: "/pages/login/index",
            });
          }
        } else {
          // 统一的响应日志记录
          _reslog(response);
          if (statusCode === 200) {
            //成功
            resolve(response.data);
          } else {
            reject(response);
          }
        }
      };

      _config = Object.assign({}, this.config, options);
      _config.requestId = new Date().getTime();

      if (this.interceptor.request) {
        this.interceptor.request(_config);
      }

      uni.request(_config);
    });
  },
  isRefreshing: false,
  refreshSubscribers: [],
  async getRefreshToken() {
    let res
    if (!this.isRefreshing) {
      this.isRefreshing = true;
      const refreshToken = uni.getStorageSync("repari-refresh-token");
      if (refreshToken) {
        try {
          const data = { refreshToken };
           res = await this.post("/user/refresh/token", data);
          if (res.code === 200) {
            uni.setStorageSync("repari-token", res.data.Token);
            uni.setStorageSync("repari-user-info", res.data.AccountInfo);
            uni.setStorageSync("repari-refresh-token", res.data.RefreshToken);
            // 返回新的token
            return res.data.Token;
          } else {
            // 获取RefreshToken失败
            uni.removeStorageSync("repari-token");
            uni.removeStorageSync("repari-user-info");
            uni.redirectTo({
              url: "/pages/login/index",
            });
          }
        } catch (err) {
          console.log(err);
        } finally {
          this.isRefreshing = false;
          this.refreshSubscribers.forEach((cb) => cb(res.data.Token));
          // 重置队列
          this.refreshSubscribers = [];
        }
      } else {
        // 若没有RefreshToken，则跳转到登录页
        webUni.postMessage({
          data: {
            params: 401,
            action: 'login'
          }
        });
        /* uni.redirectTo({
          url: "/pages/login/index",
        }); */
      }
    } else {
      // 若正在获取RefreshToken，则返回一个Promise，等待获取到新的token后再继续之前的请求
      return new Promise((resolve) => {
        this.refreshSubscribers.push((token) => {
          resolve(token);
        });
      });
    }
  },

  get(url, data, options) {
    if (!options) {
      options = {};
    }
    options.url = url;
    options.data = data;
    options.method = "GET";
    return this.request(options);
  },
  post(url, data, options, header) {
    if (!options) {
      options = {};
    }
    options.url = url;
    options.data = data;
    options.header = header;
    options.method = "POST";
    return this.request(options);
  },
  put(url, data, options) {
    if (!options) {
      options = {};
    }
    options.url = url;
    options.data = data;
    options.method = "PUT";
    return this.request(options);
  },
  delete(url, data, options) {
    if (!options) {
      options = {};
    }
    options.url = url;
    options.data = data;
    options.method = "DELETE";
    return this.request(options);
  },
};

/**
 * 响应接口日志记录
 */
function _reslog(res) {
  let _statusCode = res.data.status;
  //TODO 除了接口服务错误外，其他日志调接口异步写入日志数据库
  switch (_statusCode) {
    case 200:
      break;
    case 401:
      break;
    case 404:
      break;
    default:
      break;
  }
}