import config from "../config";
import log from "./log";

export class BizError extends Error {
  code: number;
  constructor(message: string, code = 500) {
    super(message);
    this.code = code;
  }
}
export type DataList<T> = {
  records: T[];
  total: number;
  size: number;
  current: number;
  orders: any[];
  optimizeCountSql: boolean;
  searchCount: boolean;
  countId?: any;
  maxLimit?: any;
  pages: number;
}
type ApiResponse<T> = {
  code: 0 | number
  message: string
  data: T
}
type HttpMethod = "GET" | "POST" | "PUT" | "DELETE"

function request<T>(api: string, data: any = null, method: HttpMethod = 'POST', autoShowLogin: boolean = true) {
  const header: {
    [key: string]: string
  } = {}
  const app = getApp();
  // 判断是否有token
  const token = app ? app.globalData.token : wx.getStorageSync('user-token')
  if (token) { // 如果有token 添加token头
    header.token = token
  }
  // 对于post请求发送json数据
  if (method !== 'POST') {
    header['content-type'] = 'application/json'
  }
  return new Promise<T>((resolve, reject) => {
    wx.request<ApiResponse<T>>({
      url: config.api_url + api,
      data,
      header,
      method,
      success: (res) => {
        // 验证http的响应码是否正常
        if (res.statusCode !== 200) {
          reject(new BizError('请求数据失败(server)', -1))
          return;
        }
        if (!res.data) {
          reject(new BizError('请求数据失败(empty)', -1))
          return;
        }
        // 获取响应数据
        const result = res.data
        // 验证接口是否正确
        if (result.code !== 0) {
          if (result.code === 403 && autoShowLogin) {
            wx.switchTab({
              url: '/pages/personal/personal'
            })
            return;
          }
          reject(new BizError(result.message, result.code))
          return;
        }
        // 请求成功 直接回调
        resolve(result.data)
      },
      fail: (e) => {
        log(e)
        reject(new BizError('请求数据失败(http)', -1))
      }
    })
  })
}
export default request