import config from './config.js'
import { guid, getNonce, getVersion, getClient, isLoginTop } from './util.js'

let BASE_URL = config.BASE_URL
// #ifdef H5
// H5 通过 manifest.json 的 devServer.proxy 代理到 /api，规避跨域
BASE_URL = '/api'
// #endif

/**
 * 统一请求封装（沿用旧版鉴权约定）
 * - 自动附加 token / uid / mac / client / source / version 等公共参数
 * - 响应 code===0 视为成功；code===1009 登录失效，清空登录态并跳转登录
 * @param {{ url: string, method?: string, params?: object, headers?: object, loading?: boolean }} options
 */
export default function request({
  url = '',
  method = 'GET',
  params = {},
  headers = {},
  loading = false
} = {}) {
  const fullUrl = BASE_URL + url
  const timestamp = parseInt(Date.now() / 1000)
  const token = uni.getStorageSync('token')
  const uid = uni.getStorageSync('open_id')
  let mac = uni.getStorageSync('mac')
  const source = uni.getStorageSync('source') || ''

  if (!mac) {
    const sysInfo = uni.getSystemInfoSync()
    mac = sysInfo.deviceId || guid()
    uni.setStorageSync('mac', mac)
  }

  const { timeStr, nonce } = getNonce()
  const { version, version_code } = getVersion()

  const header = Object.assign(
    {
      'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8',
      timestr: timeStr,
      nonce
    },
    headers
  )
  if (token) header.token = token

  let data = {
    token,
    uid,
    mac,
    base_timestamp: timestamp,
    client: getClient(),
    source,
    client_ios: uni.getSystemInfoSync().platform === 'ios' ? 1 : 0,
    version,
    version_code,
    ...params
  }
  // 去除空字符串字段
  Object.keys(data).forEach((k) => {
    if (data[k] === '') delete data[k]
  })

  if (loading) uni.showLoading({ mask: true, title: '加载中...' })

  return new Promise((resolve, reject) => {
    uni.request({
      url: fullUrl,
      method,
      header,
      data
    })
      .then((response) => {
        const res = (response && response.data) || {}
        if (res.code === 0) {
          resolve(res)
        } else if (res.code === 1009) {
          // 登录失效：清空登录态并跳转登录页
          // 动态引入避免循环依赖
          import('@/store/user.js').then(({ useUserStore }) => {
            useUserStore().clear()
          })
          if (!isLoginTop()) {
            let loginUrl = '/pages/login/login'
            // #ifdef H5
            loginUrl += `?redirect=${encodeURIComponent(location.pathname + location.search)}`
            // #endif
            uni.navigateTo({ url: loginUrl })
          }
          reject(res)
        } else {
          reject(res)
        }
      })
      .catch((e) => {
        const status = e && e.statusCode
        reject({ code: 1, msg: status ? `网络异常 (${status})` : '网络异常，请重试！' })
      })
      .finally(() => {
        if (loading) uni.hideLoading()
      })
  })
}