<template>
  <div id="devicePosition" style="width:100vw; height: 91vh">
    <el-container v-loading="loading" style="height: 91vh;" element-loading-text="拼命加载中">
      <el-aside width="400px" style="background-color: #ffffff">
        <DeviceTree :clickEvent="clickEvent" :contextMenuEvent="contextMenuEvent"></DeviceTree>
      </el-aside>
      <el-container>
        <el-header height="5vh" style="font-size: 17px;line-height:5vh; display: grid; grid-template-columns: 1fr 1fr">
          <div style="text-align: left">
            分屏:
            <i class="iconfont icon-a-mti-1fenpingshi btn" :class="{active:spiltIndex === 0}" @click="spiltIndex=0"/>
            <i class="iconfont icon-a-mti-4fenpingshi btn" :class="{active: spiltIndex === 1}" @click="spiltIndex=1"/>
            <i class="iconfont icon-a-mti-6fenpingshi btn" :class="{active: spiltIndex === 2}" @click="spiltIndex=2"/>
            <i class="iconfont icon-a-mti-9fenpingshi btn" :class="{active: spiltIndex === 3}" @click="spiltIndex=3"/>
          </div>
          <div style="text-align: right">
            <i class="el-icon-full-screen btn" @click="fullScreen()"/>
          </div>
        </el-header>
        <el-main style="padding: 0; margin: 0 auto; background-color: #a9a8a8" >
          <div ref="playBox" :style="{width: '151vh', height: '85vh', display: 'grid', gridTemplateColumns: layout[spiltIndex].columns,
           gridTemplateRows: layout[spiltIndex].rows, gap: '4px', backgroundColor: '#a9a8a8'}">
            <div v-for="i in layout[spiltIndex].spilt" :key="i" class="play-box" :class="getPlayerClass(spiltIndex, i)"
                 @click="playerIdx = (i-1)">
              <div v-if="!videoUrl[i-1]" style="color: #ffffff;font-size: 15px;font-weight: bold;">{{videoTip[i-1]?videoTip[i-1]:"无信号"}}</div>
              <player :ref="'player'[i-1]" v-else :videoUrl="videoUrl[i-1]" fluent autoplay @screenshot="shot"
                      @destroy="destroy"/>
            </div>
          </div>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>
<script>

import uiHeader from "../layout/UiHeader.vue";
import player from './common/jessibuca.vue'
import DeviceTree from './common/DeviceTree.vue'
import screenfull from "screenfull";

export default {
  name: "live",
  components: {
    uiHeader, player, DeviceTree
  },

  data() {
    return {
      videoUrl: [''],
      videoTip: [''],
      spiltIndex: 2,//分屏
      playerIdx: 0,//激活播放器

      updateLooper: 0, //数据刷新轮训标志
      count: 15,
      total: 0,

      //channel
      loading: false,
      layout: [
        {
          spilt: 1,
          columns: "1fr",
          rows: "1fr",
          style: function (){}
        },
        {
          spilt: 4,
          columns: "1fr 1fr",
          rows: "1fr 1fr",
          style: function (){}
        },
        {
          spilt: 6,
          columns: "1fr 1fr 1fr",
          rows: "1fr 1fr 1fr",
          style: function (index){
            console.log(index)
            if (index === 0) {
              return {
                gridColumn: ' 1 / span 2',
                gridRow: ' 1 / span 2',
              }
            }
          }

        },
        {
          spilt: 9,
          columns: "1fr 1fr 1fr",
          rows: "1fr 1fr 1fr",
          style: function (){}
        },
      ]
    };
  },
  mounted() {

  },
  created() {
    this.checkPlayByParam()
  },

  computed: {
    liveStyle() {
      let style = {width: '100%', height: '100%'}
      switch (this.spilt) {
        case 4:
          style = {width: '49%', height: '49%'}
          break
        case 9:
          style = {width: '32%', height: '32%'}
          break
      }
      this.$nextTick(() => {
        for (let i = 0; i < this.spilt; i++) {
          const player = this.$refs.player
          player && player[i] && player[i].updatePlayerDomSize()
        }
      })
      return style
    }
  },
  watch: {
    spilt(newValue) {
      console.log("切换画幅;" + newValue)
      let that = this
      for (let i = 1; i <= newValue; i++) {
        if (!that.$refs['player' + i]) {
          continue
        }
        this.$nextTick(() => {
          if (that.$refs['player' + i] instanceof Array) {
            that.$refs['player' + i][0].resize()
          } else {
            that.$refs['player' + i].resize()
          }
        })

      }
      window.localStorage.setItem('split', newValue)
    },
    '$route.fullPath': 'checkPlayByParam'
  },
  destroyed() {
    clearTimeout(this.updateLooper);
  },
  methods: {
    destroy(idx) {
      console.log(idx);
      this.clear(idx.substring(idx.length - 1))
    },
    clickEvent: function (channelId) {
      this.sendDevicePush(channelId)
    },
    getPlayerClass: function (splitIndex, i) {
      let classStr = "play-box-" + splitIndex + "-" +i
      if (this.playerIdx === (i-1)) {
        classStr += " redborder"
      }
      return classStr
    },
    contextMenuEvent: function (device, event, data, isCatalog) {

    },
    //通知设备上传媒体流
    sendDevicePush: function (channelId) {

      this.save(channelId)
      let idxTmp = this.playerIdx
      this.setPlayUrl("", idxTmp);
      this.$set(this.videoTip, idxTmp, "正在拉流...")
      this.$axios({
        method: 'get',
        url: '/api/common/channel/play',
        params: {
          channelId: channelId
        }
      }).then((res)=> {
        if (res.data.code === 0 && res.data.data) {
          let videoUrl;
          if (location.protocol === "https:") {
            videoUrl = res.data.data.wss_flv;
          } else {
            videoUrl = res.data.data.ws_flv;
          }
          this.setPlayUrl(videoUrl, idxTmp);
        } else {
          this.$set(this.videoTip, idxTmp, "播放失败: " + res.data.msg)
        }
      }).catch(function (e) {
      }).finally(() => {
        this.loading = false
      });
    },
    setPlayUrl(url, idx) {
      this.$set(this.videoUrl, idx, url)
      let _this = this
      setTimeout(() => {
        window.localStorage.setItem('videoUrl', JSON.stringify(_this.videoUrl))
      }, 100)

    },
    checkPlayByParam() {
      let query = this.$route.query
      if (query.channelId) {
        this.sendDevicePush(query.channelId)
      }
    },
    shot(e) {
      // console.log(e)
      // send({code:'image',data:e})
      var base64ToBlob = function (code) {
        let parts = code.split(';base64,');
        let contentType = parts[0].split(':')[1];
        let raw = window.atob(parts[1]);
        let rawLength = raw.length;
        let uInt8Array = new Uint8Array(rawLength);
        for (let i = 0; i < rawLength; ++i) {
          uInt8Array[i] = raw.charCodeAt(i);
        }
        return new Blob([uInt8Array], {
          type: contentType
        });
      };
      let aLink = document.createElement('a');
      let blob = base64ToBlob(e); //new Blob([content]);
      let evt = document.createEvent("HTMLEvents");
      evt.initEvent("click", true, true); //initEvent 不加后两个参数在FF下会报错  事件类型，是否冒泡，是否阻止浏览器的默认行为
      aLink.download = '截图';
      aLink.href = URL.createObjectURL(blob);
      aLink.click();
    },
    save(item) {
      let dataStr = window.localStorage.getItem('playData') || '[]'
      let data = JSON.parse(dataStr);
      data[this.playerIdx] = item
      window.localStorage.setItem('playData', JSON.stringify(data))
    },
    clear(idx) {
      let dataStr = window.localStorage.getItem('playData') || '[]'
      let data = JSON.parse(dataStr);
      data[idx - 1] = null;
      console.log(data);
      window.localStorage.setItem('playData', JSON.stringify(data))
    },
    fullScreen: function (){
      if (screenfull.isEnabled) {
        screenfull.toggle(this.$refs.playBox);
      }
    }
  }
};
</script>
<style>
.btn {
  margin: 0 10px;

}

.btn:hover {
  color: #409EFF;
}

.btn.active {
  color: #409EFF;

}

.redborder {
  border: 4px solid rgb(0, 198, 255) !important;
}

.play-box {
  background-color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.play-box-2-1 {
  grid-column: 1 / span 2;
  grid-row: 1 / span 2;
}
</style>
<style>
.videoList {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
}

.video-item {
  position: relative;
  width: 15rem;
  height: 10rem;
  margin-right: 1rem;
  background-color: #000000;
}

.video-item-img {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  width: 100%;
  height: 100%;
}

.video-item-img:after {
  content: "";
  display: inline-block;
  position: absolute;
  z-index: 2;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  width: 3rem;
  height: 3rem;
  background-image: url("../assets/loading.png");
  background-size: cover;
  background-color: #000000;
}

.video-item-title {
  position: absolute;
  bottom: 0;
  color: #000000;
  background-color: #ffffff;
  line-height: 1.5rem;
  padding: 0.3rem;
  width: 14.4rem;
}

.baidumap {
  width: 100%;
  height: 100%;
  border: none;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}

/* 去除百度地图版权那行字 和 百度logo */
.baidumap > .BMap_cpyCtrl {
  display: none !important;
}

.baidumap > .anchorBL {
  display: none !important;
}
</style>
