import { defineComponent, onMounted, reactive, ref, watch } from 'vue'
import styles from './video.module.less'
// import poster from './images/video_bg.png'
import { Button, Loading } from 'vant'
import { browser } from '@/helpers/utils'
import Plyr from 'plyr'
import 'plyr/dist/plyr.css'
import { useInterval, useIntervalFn } from '@vueuse/core'
import { useRoute, useRouter } from 'vue-router'
import request from '@/helpers/request'
import qs from 'query-string'

export default defineComponent({
  name: 'pre-register',
  setup() {
    const route = useRoute()
    const router = useRouter()
    const openId = sessionStorage.getItem('active-open-id')
    // 页面定时
    const pageTimer = useInterval(1000, { controls: true })
    pageTimer.pause()

    const forms = reactive({
      coverImg: '',
      introductionVideo: '',
      videoBrowsePoint: 0,
      saveId: route.query.saveId,
      orchestraId: route.query.id,
      openId: route.query.openId || openId,
      loading: false,
      player: null as any,
      intervalFnRef: null as any
    })

    // 播放视频总时长
    const videoIntervalRef = useInterval(1000, { controls: true })
    videoIntervalRef.pause()

    /**
     * 格式化视屏播放有效时间 - 合并区间
     * @param intervals [[], []]
     * @example [[4, 8],[0, 4],[10, 30]]
     * @returns [[0, 8], [10, 30]]
     */
    const formatEffectiveTime = (intervals: any[]) => {
      const res: any = []
      intervals.sort((a, b) => a[0] - b[0])
      let prev = intervals[0]
      for (let i = 1; i < intervals.length; i++) {
        const cur = intervals[i]
        if (prev[1] >= cur[0]) {
          // 有重合
          prev[1] = Math.max(cur[1], prev[1])
        } else {
          // 不重合，prev推入res数组
          res.push(prev)
          prev = cur // 更新 prev
        }
      }
      res.push(prev)
      return res
    }

    /**
     * 获取数据有效期
     * @param intervals [[], []]
     * @returns 0s
     */
    const formatTimer = (intervals: any[]) => {
      const afterIntervals = formatEffectiveTime(intervals)
      let time = 0
      afterIntervals.forEach((t: any) => {
        time += t[1] - t[0]
      })
      return time
    }

    /**
     * 视屏累计时长
     * 1、视屏开始播放时-开始计时
     * 2、视频暂停时暂停-停止计时
     * 3、视频加载时-停止计时
     * 4、视频倍数播放时，时间正常计时
     * 5、点击视频进度或拖动进度时，时间暂停
     */
    const _init = () => {
      const controls = [
        'play-large',
        'play',
        'progress',
        'captions',
        'current-time',
        'duration',
        'settings',
        'fullscreen'
      ]
      const params: any = {
        controls: controls,
        settings: ['speed'],
        speed: { selected: 1, options: [0.5, 1, 1.5, 2] },
        i18n: {
          speed: '速度',
          normal: '默认'
        },
        invertTime: false
      }

      if (browser().iPhone) {
        params.fullscreen = {
          enabled: true,
          fallback: 'force',
          iosNative: true
        }
      }

      forms.player = new Plyr('#register-video', params)

      forms.player.on('loadedmetadata', () => {
        console.log('loadedmetadata')
        forms.loading = false

        forms.player.currentTime = forms.videoBrowsePoint
      })

      forms.player.on('seeking', (val: any) => {
        // console.log('seeking')
        videoIntervalRef.isActive.value && videoIntervalRef.pause()
      })

      // // 拖动结束时
      forms.player.on('seeked', (val: any) => {
        // console.log('seeked')
        videoIntervalRef.isActive.value && videoIntervalRef.pause()
      })

      // 正在搜索中
      forms.player.on('waiting', () => {
        // console.log('waiting pause')
        videoIntervalRef.isActive.value && videoIntervalRef.pause()
      })

      // 如何视频在缓存不会触发
      forms.player.on('timeupdate', () => {
        // console.log('timeupdate', forms.player.currentTime)

        // 判断视频计时器是否暂停，如果暂停则恢复
        // 添加 「forms.player.playing」 是由会跳转到上次播放时间，会触发些方法
        if (
          !videoIntervalRef.isActive.value &&
          forms.player.currentTime > 0 &&
          forms.player.playing
        ) {
          console.log('timeupdate play')
          videoIntervalRef.resume()
        }
      })

      // 开始播放
      forms.player.on('play', () => {
        console.log('play')
        // 判断视频计时器是否暂停，如果暂停则恢复
        if (!videoIntervalRef.isActive.value) {
          videoIntervalRef.resume()
        }
      })

      // 暂停播放
      forms.player.on('pause', () => {
        console.log('pause')

        videoIntervalRef.pause()
      })

      forms.player.on('enterfullscreen', () => {
        console.log('fullscreen')
        const i = document.createElement('i')
        i.id = 'fullscreen-back'
        i.className = 'van-icon van-icon-arrow-left video-back'
        i.addEventListener('click', () => {
          forms.player.fullscreen.exit()
        })
        console.log(document.getElementsByClassName('plyr'))
        document.getElementsByClassName('plyr')[0].appendChild(i)
      })

      forms.player.on('exitfullscreen', () => {
        console.log('exitfullscreen')
        const i = document.getElementById('fullscreen-back')
        i && i.remove()
      })
    }

    // 保存零时时间
    const moreTime: any = ref([]) // 多个观看时间段
    let tempTime: any = [] // 临时存储时间

    const currentTimer = useInterval(1000, { controls: true })
    // 监听播放状态，
    watch(
      () => videoIntervalRef.isActive.value,
      (newVal: boolean) => {
        // console.log(newVal, 'videoIntervalRef.isActive.value in')
        // console.log('watch', forms.player.currentTime)
        // console.log('保留两个小数：', forms.player.currentTime.toFixed(2))
        // console.log('向下取整：', Math.floor(forms.player.currentTime))
        // console.log('向上取整：', Math.ceil(forms.player.currentTime))
        // console.log('四舍五入：', Math.round(forms.player.currentTime))
        if (newVal) {
          tempTime[0] = Math.round(forms.player.currentTime)
        } else {
          tempTime[1] = Math.round(forms.player.currentTime)
        }

        if (tempTime.length >= 2) {
          // console.log(tempTime, 'tempTime', moreTime.value)
          // 处理在短时间内的时间差 【视屏拖动，点击可能会导致时间差太大】
          const diffTime = tempTime[1] - tempTime[0] - currentTimer.counter.value > 2
          // console.log(diffTime, 'diffTime', currentTimer.counter.value, 'value')
          // 结束时间，如果 大于开始时间则清除
          if (tempTime[1] >= tempTime[0] && !diffTime) moreTime.value.push(tempTime)
          tempTime = []
          currentTimer.counter.value = 0
        }

        // console.log('观看的时间', moreTime)
      }
    )

    // 更新时间
    const updateStat = async (pageBrowseTime = 10) => {
      try {
        const videoBrowseData = moreTime.value.length > 0 ? formatEffectiveTime(moreTime.value) : []
        let time = moreTime.value.length > 0 ? formatTimer(moreTime.value) : 0
        const videoCountTime = videoIntervalRef?.counter.value
        const videoDuration = forms.player.duration
        // 判断如何视屏播放时间大于视屏播放有效时间则说明数据有问题，进行重置数据
        if (time > videoCountTime && time < videoDuration) {
          time = videoCountTime
        }
        const rate = Math.floor((time / Math.floor(videoDuration)) * 100)

        await request.post('/api-student/open/studentBrowseRecord/updateStat', {
          data: {
            id: forms.saveId,
            pageBrowseTime, // 固定10秒
            videoBrowseData: JSON.stringify(videoBrowseData), // 视屏播放数据
            videoBrowseDataTime: time || 0, // 视屏观看百分比时长
            videoBrowsePercentage: rate || 0, // 视频观看百分比
            videoBrowseTime: videoIntervalRef?.counter.value, // 视频观看时长
            videoBrowsePoint: Math.floor(forms.player.currentTime || 0) // 视频最后观看点 - 向下取整
          }
        })
      } catch {
        //
      }
    }

    // 提交
    const onSubmit = async () => {
      try {
        // 暂停回调
        forms.intervalFnRef?.pause()
        currentTimer.pause()
        // 页面计时暂停
        pageTimer.pause()
        await updateStat()

        window.location.href =
          window.location.origin +
          window.location.pathname +
          '/project/preRegister.html?' +
          qs.stringify({
            orchestraId: forms.orchestraId,
            openId: forms.openId
          })

        // window.location.href =
        //   window.location.origin +
        //   '/project/preRegister.html?' +
        //   qs.stringify({
        //     orchestraId: forms.orchestraId,
        //     openId: forms.openId
        //   })
      } catch (e) {
        console.log(e, 'e')
        // 还原
        forms.intervalFnRef?.resume()
        pageTimer.resume()
        currentTimer.resume()
      }
    }

    onMounted(async () => {
      try {
        const { data } = await request.get('/api-student//open/studentBrowseRecord/query', {
          params: {
            openId: forms.openId,
            orchestraId: forms.orchestraId
          }
        })
        forms.videoBrowsePoint = data.videoBrowsePoint || 0
        if (forms.player) {
          forms.player.currentTime = data.videoBrowsePoint || 0
        }
        forms.introductionVideo = data.introductionVideo
        forms.coverImg = data.coverImg
        console.log(data)
        moreTime.value = data.videoBrowseData ? JSON.parse(data.videoBrowseData) : []

        _init()
        // 间隔多少时间同步数据
        forms.intervalFnRef = useIntervalFn(async () => {
          // 页面时间恢复
          pageTimer.counter.value = 0
          pageTimer.resume()
          await updateStat()
          videoIntervalRef.counter.value = 0
        }, 10000)
      } catch {
        //
      }
    })

    // 判断是否有openId
    if (!forms.openId) {
      router.replace({
        path: '/pre-register-video',
        query: {
          id: forms.orchestraId
        }
      })
    }
    return () => (
      <div class={styles['pre-register-video']}>
        <div class={styles.videoContainer}>
          <div class={styles['video-content']}>
            <video
              id="register-video"
              class={styles['video']}
              src={forms.introductionVideo + '?time' + Date.now()}
              // src={
              //   'https://cloud-coach.ks3-cn-beijing.ksyuncs.com/1684981545808.mp4?time' + Date.now()
              // }
              playsinline={true}
              poster={forms.coverImg}
              preload="auto"
            ></video>
            {/* 加载视频使用 */}
            {forms.loading && (
              <div class={styles.loadingVideo}>
                <Loading
                  size={36}
                  color="#FF8057"
                  vertical
                  style={{ height: '100%', justifyContent: 'center' }}
                >
                  加载中...
                </Loading>
              </div>
            )}
          </div>
        </div>
        <div class={styles.messageContainer}>
          <div class={styles.messageContent}>
            <p>家长您好！</p>
            <p class={styles.c1}>
              请家长们合理安排时间，<span>认真观看</span>家长会内容。在<span>详细了解</span>
              所有要求后，有意向让孩子加入乐团的家长，请在<span>明晚20:00前</span>，为孩子完成
              <span>乐团报名</span>。
            </p>
            <p class={styles.c1}>
              下周，专业老师将针对意向入团学员进行身体条件确认。谢谢各位的支持！
            </p>
            <p class={styles.bottom}>
              注：乐团于下学期正式开始训练，训练时间下学期开学前另行通知，训练时间会与学校其他社团错开，家长无需担心时间冲突问题。
            </p>
          </div>

          <Button class={styles.submitBtn} onClick={onSubmit}></Button>
        </div>
      </div>
    )
  }
})