import { request } from "@/utils/request"

// 生成并缓存 device_id
function getOrCreateDeviceId() {
  let deviceId = uni.getStorageSync('device_id')
  if (!deviceId) {
    deviceId = Date.now() + '_' + Math.random().toString(36).substr(2, 9)
    uni.setStorageSync('device_id', deviceId)
  }
  return deviceId
}

// 获取网络类型
function getNetworkType() {
  return new Promise((resolve) => {
    uni.getNetworkType({
      success: (res) => resolve(res.networkType || 'unknown'),
      fail: () => resolve('unknown')
    })
  })
}

// 获取系统平台
function getSystemInfo() {
  return new Promise((resolve) => {
    uni.getSystemInfo({
      success: (res) => resolve(res),
      fail: () => resolve({})
    })
  })
}

// 获取当前页面路径
function getCurrentPagePath() {
  const pages = getCurrentPages()
  const currentPage = pages[pages.length - 1]
  return currentPage?.route || ''
}

function getMiniProgramVersion() {
  const platform = process.env.UNI_PLATFORM
  let version = ''
  let envVersion = ''

  try {
    if (platform === 'mp-weixin') {
      // 微信小程序
      const info = wx.getAccountInfoSync()
      version = info?.miniProgram?.version || ''
      envVersion = info?.miniProgram?.envVersion || ''
    } else if (platform === 'mp-alipay') {
      // 支付宝小程序
      const info = my.getAppInfoSync()
      version = info?.version || ''
    } else if (platform === 'mp-toutiao' || platform === 'mp-jd') {
      // 抖音/头条/京东小程序
      const info = tt.getAccountInfoSync?.()
      version = info?.miniProgram?.version || ''
      envVersion = info?.miniProgram?.envVersion || ''
    } else if (platform === 'mp-baidu') {
      // 百度小程序（无标准方法获取版本号）
      version = '' // 百度不支持获取版本号
    } else {
      version = ''
    }
  } catch (e) {
    version = ''
    envVersion = ''
  }

  return {
    platform,     // 当前小程序平台
    version,      // 小程序版本号
    envVersion    // develop / trial / release（微信等支持）
  }
}

// 构造埋点对象
async function buildEventData(eventName, eventType = 'click', customParams = {}) {
  const deviceId = getOrCreateDeviceId()
  const systemInfo = await getSystemInfo()
  const networkType = await getNetworkType()
  // const location = await getLocation()
  const appVersion = (typeof plus !== 'undefined') ? plus?.runtime?.version : ''
  const { envVersion, platform, version} = getMiniProgramVersion()

  return {
    userId: uni.getStorageSync('user_id') || null,
    deviceId: deviceId,
    eventName: eventName,
    eventType: eventType,
    eventTime: new Date(),
    page: getCurrentPagePath(),
    elementId: customParams.element_id || null,
    elementContent: customParams.element_content || null,
    customParams: customParams,
    networkType: networkType,
    os: systemInfo.platform || 'unknown',
    appVersion: version || 'unknown',
	envVersion: envVersion ?? '',
	platform: platform ?? ''
  }
}

// 发送埋点数据到服务器
async function sendTrack(eventName, eventType = 'click', customParams = {}) {
  const eventData = await buildEventData(eventName, eventType, customParams);
  request({
  	url: '/api/common/tracking/create',
  	method: 'POST',
  	data: eventData
  })
}

export default {
  sendTrack
}