/**
 * 定义基础配置
 * 官方文档 https://developer.umeng.com/docs/67963/detail/74517
 */
class CNZZ {
  siteId: number
  isDebug: boolean

  constructor(siteId: number = 0, isDebug: boolean = false) {
    this.siteId = siteId
    this.isDebug = isDebug
  }

  /**
   * 初始化
   */
  init() {
    window._czc = window._czc ? window._czc : []
    const SCRIPT = document.createElement('script')
    SCRIPT['async'] = true
    SCRIPT[
      'src'
    ] = `https://s9.cnzz.com/z_stat.php?id=${this.siteId}&web_id=${this.siteId}`
    document.querySelector('head').appendChild(SCRIPT)

    if (this.isDebug) {
      console.log(
        `[vue-cnzz-analytics] siteId load done.\nsiteId:    ${this.siteId}`
      )
    }
  }

  /**
   * 设置要响应的站点
   */
  setAccount() {
    window._czc.push(['_setAccount', this.siteId])
  }

  /**
   * 提交PV、UV
   */
  trackPageview(pageUrl: string, fromUrl?: string) {
    // 如果页面链接没传或者无效链接，则默认为根域名
    if (!pageUrl || typeof pageUrl !== 'string') {
      pageUrl = '/'
    }

    // 如果页面链接带上了域名，则需要过滤掉
    if (pageUrl.includes('http')) {
      const PAGE_CUT = pageUrl.split('/')
      const HOST_NAME = `${PAGE_CUT[0]}//${PAGE_CUT[2]}`
      pageUrl = pageUrl.replace(HOST_NAME, '')
    }

    // 如果来路url异常，则设置为空
    if (!fromUrl || (fromUrl && typeof fromUrl !== 'string')) {
      fromUrl = ''
    }

    // 如果来路url没有带上http/https，也是设置为空
    if (typeof fromUrl === 'string' && !fromUrl.includes('http')) {
      fromUrl = ''
    }

    // 设置响应id并提交数据
    this.setAccount()

    if (fromUrl) {
      window._czc.push(['_trackPageview', pageUrl, fromUrl])
    } else {
      window._czc.push(['_trackPageview', pageUrl])
    }

    if (this.isDebug) {
      console.log(
        `[vue-cnzz-analytics] track pv done.\nsiteId:    ${this.siteId}\npageUrl:   ${pageUrl}\nfromUrl:   ${fromUrl}`
      )
    }
  }

  /**
   * 提交点击事件
   */
  trackEvent(
    category: string,
    action: string,
    label: string,
    value: number,
    nodeId: string
  ) {
    // 前两个是必填项
    if (
      typeof category !== 'string' ||
      typeof action !== 'string' ||
      !category ||
      !action
    ) {
      throw new Error(
        '[vue-cnzz-analytics] Missing necessary category and operation information, and must be of type string.'
      )
    }

    // 重置一些无效的默认值
    if (!label || typeof label !== 'string') {
      label = ''
    }

    if (!Number(value)) {
      value = 0
    }

    if (!nodeId || typeof nodeId !== 'string') {
      nodeId = ''
    }

    // 设置响应id并提交数据
    this.setAccount()

    if (nodeId) {
      window._czc.push(['_trackEvent', category, action, label, value, nodeId])
    } else {
      window._czc.push(['_trackEvent', category, action, label, value])
    }

    if (this.isDebug) {
      console.log(
        `[vue-cnzz-analytics] track event done.\nsiteId:   ${this.siteId}\ncategory: ${category}\naction:   ${action}\nlabel:    ${label}\nvalue:    ${value}\nnodeId:   ${nodeId}`
      )
    }
  }
}

export default CNZZ