import style from 'bundle-text:./style.less'

function checkVersion(art) {
  const {
    version,
    utils: { errorHandle },
  } = art.constructor
  const arr = version.split('.').map(Number)
  const major = arr[0]
  const minor = arr[1] / 100
  errorHandle(
    major + minor >= 5,
    `Artplayer.js@${version} is not compatible the artplayerPluginAds@${artplayerPluginAds.version}. Please update it to version Artplayer.js@5.x.x`,
  )
}

export default function artplayerPluginAds(option) {
  return (art) => {
    checkVersion(art)

    const {
      template: { $player },
      icons: { volume, volumeClose, fullscreenOn, fullscreenOff, loading },
      constructor: {
        validator,
        utils: { query, append, setStyle },
      },
    } = art

    option = validator(
      {
        html: '',
        video: '',
        url: '',
        playDuration: 5,
        totalDuration: 10,
        muted: false,
        i18n: {
          close: '关闭广告',
          countdown: '%s秒',
          detail: '查看详情',
          canBeClosed: '%s秒后可关闭广告',
        },
        ...option,
      },
      {
        html: '?string',
        video: '?string',
        url: '?string',
        playDuration: 'number',
        totalDuration: 'number',
        muted: '?boolean',
        i18n: {
          close: 'string',
          countdown: 'string',
          detail: 'string',
          canBeClosed: 'string',
        },
      },
    )

    let $ads = null
    let $timer = null
    let $close = null
    let $countdown = null
    let $control = null
    let $loading = null

    let time = 0
    let timer = null
    let isEnd = false
    let isInit = false
    let isCanClose = false

    function getI18n(val, str) {
      return str.replace('%s', val)
    }

    function skip() {
      isEnd = true
      art.play()
      if (option.video)
        $ads.pause()
      setStyle(art.template.$ads, 'display', 'none')
      art.emit('artplayerPluginAds:skip', option)
    }

    function play() {
      if (isEnd)
        return

      timer = setTimeout(() => {
        time += 1

        const playDuration = option.playDuration - time
        if (playDuration >= 1) {
          $close.innerHTML = getI18n(playDuration, option.i18n.canBeClosed)
        }
        else {
          $close.innerHTML = option.i18n.close
          if (!isCanClose) {
            isCanClose = true
          }
        }

        $countdown.innerHTML = getI18n(option.totalDuration - time, option.i18n.countdown)

        if (time >= option.totalDuration) {
          skip()
        }
        else {
          play()
        }
      }, 1000)
    }

    function pause() {
      if (isEnd)
        return
      clearTimeout(timer)
    }

    function show() {
      art.template.$ads = append($player, '<div class="artplayer-plugin-ads"></div>')

      $ads = append(
        art.template.$ads,
        option.video
          ? `<video class="artplayer-plugin-ads-video" src="${option.video}" loop playsInline></video>`
          : `<div class="artplayer-plugin-ads-html">${option.html}</div>`,
      )

      $loading = append(art.template.$ads, '<div class="artplayer-plugin-ads-loading"></div>')
      append($loading, loading)

      $timer = append(
        art.template.$ads,
        `<div class="artplayer-plugin-ads-timer">
                    <div class="artplayer-plugin-ads-close">${
                      option.playDuration <= 0
                        ? option.i18n.close
                        : getI18n(option.playDuration, option.i18n.canBeClosed)
                    }</div>
                    <div class="artplayer-plugin-ads-countdown">${getI18n(
                      option.totalDuration,
                      option.i18n.countdown,
                    )}</div>
                </div>`,
      )

      $close = query('.artplayer-plugin-ads-close', $timer)
      $countdown = query('.artplayer-plugin-ads-countdown', $timer)

      if (option.playDuration >= option.totalDuration) {
        setStyle($close, 'display', 'none')
      }

      art.proxy($close, 'click', () => {
        if (isCanClose) {
          skip()
        }
      })

      $control = append(
        art.template.$ads,
        `<div class="artplayer-plugin-ads-control">
                    <div class="artplayer-plugin-ads-detail">${option.i18n.detail}</div>
                    <div class="artplayer-plugin-ads-muted"></div>
                    <div class="artplayer-plugin-ads-fullscreen"></div>
                </div>`,
      )

      const $detail = query('.artplayer-plugin-ads-detail', $control)
      const $muted = query('.artplayer-plugin-ads-muted', $control)
      const $fullscreen = query('.artplayer-plugin-ads-fullscreen', $control)

      if (option.url) {
        art.proxy($detail, 'click', () => {
          window.open(option.url)
          art.emit('artplayerPluginAds:click', option)
        })
      }
      else {
        setStyle($detail, 'display', 'none')
      }

      if (option.video) {
        const $volume = append($muted, volume)
        const $volumeClose = append($muted, volumeClose)
        setStyle($volumeClose, 'display', 'none')

        // If the ad was set to muted initially, match the icon
        if (option.muted) {
          $ads.muted = true
          setStyle($volume, 'display', 'none')
          setStyle($volumeClose, 'display', 'inline-flex')
        }

        art.proxy($muted, 'click', () => {
          $ads.muted = !$ads.muted
          if ($ads.muted) {
            setStyle($volume, 'display', 'none')
            setStyle($volumeClose, 'display', 'inline-flex')
          }
          else {
            setStyle($volume, 'display', 'inline-flex')
            setStyle($volumeClose, 'display', 'none')
          }
        })
      }
      else {
        setStyle($muted, 'display', 'none')
      }

      const $fullscreenOn = append($fullscreen, fullscreenOn)
      const $fullscreenOff = append($fullscreen, fullscreenOff)
      setStyle($fullscreenOff, 'display', 'none')

      art.proxy($fullscreen, 'click', () => {
        art.fullscreen = !art.fullscreen
        if (art.fullscreen) {
          setStyle($fullscreenOn, 'display', 'inline-flex')
          setStyle($fullscreenOff, 'display', 'none')
        }
        else {
          setStyle($fullscreenOn, 'display', 'none')
          setStyle($fullscreenOff, 'display', 'inline-flex')
        }
      })

      art.proxy($ads, 'click', () => {
        if (option.url)
          window.open(option.url)
        art.emit('artplayerPluginAds:click', option)
      })
    }

    function init() {
      if (isInit)
        return
      isInit = true

      show()
      art.pause()

      if (option.video) {
        art.proxy($ads, 'error', skip)
        art.proxy($ads, 'loadedmetadata', () => {
          play()
          $ads.play()
          setStyle($timer, 'display', 'flex')
          setStyle($control, 'display', 'flex')
          setStyle($loading, 'display', 'none')
        })
      }
      else {
        play()
        setStyle($timer, 'display', 'flex')
        setStyle($control, 'display', 'flex')
        setStyle($loading, 'display', 'none')
      }

      art.on('document:visibilitychange', () => {
        if (document.hidden) {
          pause()
        }
        else {
          play()
        }
      })
    }

    art.on('ready', () => {
      art.once('play', init)
      art.once('video:playing', init)
    })

    return {
      name: 'artplayerPluginAds',
      skip,
      pause,
      play,
    }
  }
}

if (typeof document !== 'undefined') {
  if (!document.getElementById('artplayer-plugin-ads')) {
    const $style = document.createElement('style')
    $style.id = 'artplayer-plugin-ads'
    $style.textContent = style
    document.head.appendChild($style)
  }
}

if (typeof window !== 'undefined') {
  window.artplayerPluginAds = artplayerPluginAds
}