;(() => {
  function getWindowTop(w) {
    try {
      if (w.parent.document) {
        return getWindowTop(w.parent)
      }
    } catch (e) {
      return w
    }
  }

  const webchatWindow = getWindowTop(window)

  if (webchatWindow.responsa == null) {
    webchatWindow.responsa = {
      alreadyLaunched: false,
      configuration: undefined
    }
  }
  const responsa = webchatWindow.responsa

  if (responsa.api == null) {
    responsa.api = new Proxy({}, (target, prop) => {
      return function () {
        setTimeout(() => {
          responsa.api[prop](arguments)
        }, 100)
      }
    })
  }

  responsa.init = function (configuration = {}, channelHostUri = undefined) {
    if (this.alreadyLaunched || (!this.configuration && !configuration)) {
      return
    }

    const botId = null
    const managerUri = 'https://mediolanum-selfy.manager.channel.prod.goresponsa.com'
    channelHostUri = channelHostUri ?? 'https://mediolanum-selfy.webchat.channel.prod.goresponsa.com'

    this.configuration = Object.assign(this.configuration || { managerUri }, configuration || {})

    if (!this.configuration.botId && botId) this.configuration.botId = botId

    if (this.configuration.managerUri == null) this.configuration.managerUri = managerUri
    this.alreadyLaunched = true

    const doc = webchatWindow.document
    const now = new Date()
    //now.setMinutes(0)
    now.setSeconds(0)
    now.setMilliseconds(0)

    const scriptPolyfillShadowDOM = doc.createElement('script')
    scriptPolyfillShadowDOM.src = 'https://cdnjs.cloudflare.com/ajax/libs/shadydom/1.9.0/shadydom.min.js'
    doc.body.append(scriptPolyfillShadowDOM)
    const src = '{channel_host_uri}/responsa-webchat.min.js?timestamp={timestamp}'
      .replace('{channel_host_uri}', channelHostUri)
      .replace('{timestamp}', now.getTime())

    const scriptEl = doc.createElement('script')
    scriptEl.src = src
    scriptEl.defer = true
    doc.body.append(scriptEl)
    this.loadedScripts = [scriptPolyfillShadowDOM, scriptEl]
  }.bind(responsa)

  responsa.unload = function () {
    this.loadedScripts?.forEach((s) => {
      s.remove()
    })
    this.alreadyLaunched = false
  }.bind(responsa)

  window.addEventListener('load', () => responsa.init(false))
})()