<template>
  <section class="classic">
    <div class="fill topPane">
      <div class="viewTabs" flex>
        <div v-for="view in tabs" :key="view.id" class="btn" :class="{active:view.id==active}" flex
             @click="$emit('change',view.id)">{{ view.label }}
        </div>
        <div v-if="hasMoreDvs" class="btn more" :class="{active:isMoreTabs}" flex>更多
          <div class="moreViews">
            <div v-for="view in moreTabs" :key="view.id" v-text="view.label"
                 class="moreViewItem" :class="{active:view.id==active}"
                 :popper-options="{boundariesElement:'AiDvWrapper'}"
                 @click="$emit('change',view.id)"/>
          </div>
        </div>
      </div>
      <div class="headerBottomBorder">
        <div class="breatheLights"/>
      </div>
    </div>
    <div class="headerCenter">
      <div class="headerZone">
        <ai-sprite width="600" height="90" class="fly" @init="initFly"/>
        <span>{{ title }}</span>
      </div>
    </div>
    <div class="fill topPane">
      <div class="settingZone" flex>
        <right-top-border class="time">{{ currentTime }}</right-top-border>
        <right-top-border class="setting" @click.native.stop="$emit('setting',true)"/>
        <right-top-border class="fullscreen" @click.native.stop="$emit('fullscreen')"/>
      </div>
      <div class="headerBottomBorder right">
        <div class="breatheLights"/>
      </div>
    </div>
  </section>
</template>

<script>
import RightTopBorder from "../rightTopBorder";
import AiSprite from "../../../AiSprite";
export default {
  name: "classic",
  components: {AiSprite, RightTopBorder},
  props: {
    title: String,
    views: {default: () => []},
    active: String,
    currentTime: {default: null}
  },
  computed: {
    hasMoreDvs: v => v.views.length > 4,
    tabs: v => !v.hasMoreDvs ? v.views : v.views.slice(0, 3),
    moreTabs: v => v.views?.slice(3) || [],
    isMoreTabs: v => v.moreTabs?.some(e => e.id == this.active),
  },
  data() {
    return {}
  },
  methods: {
    initFly({layer, lib: {Arc}}) {
      const rand = (min, max) => min + (max - min) * Math.random()
      const startFly = (p) => {
        let scaleNum = rand(1, 3)
        const pos = [rand(0, 600), 90 - rand(8, 50)]
        p.attr({
          pos,
          scale: [scaleNum, scaleNum],
          radius: 1,
          fillColor: '#0aa5ff',
          filter: 'drop-shadow( 0, 2px, 2px, #0aa5ff)'
        })
        p.animate([
          pos,
          {y: 0}
        ], {
          opacity: 0,
          duration: rand(1, 1.5) * 1000,
          iterations: Infinity,
          easing: 'ease-out'
        })
        setTimeout(() => layer.append(p), rand(1, 5) * 1000)
      }
      //初始化标题萤火效果
      let numP = 70;
      for (let i = 0; i <= numP; i++) {
        const p = new Arc()
        startFly(p)
      }
    },
  },
  created() {
  }
}
</script>

<style lang="scss" scoped>
@font-face {
  font-family: DIN;
  src: url("../assets/D-DINExp.otf");
}

.classic {
  display: flex;
  align-items: center;
  height: 120px;
  width: 100%;
  padding: 0 10px;
  position: relative;
  color: #fff;

  .topPane {
    z-index: 5;
  }

  .viewTabs {
    display: flex;
    align-items: center;
    height: 60px;
    font-size: 15px;
    overflow: visible;

    .btn {
      display: flex;
      align-items: center;
      cursor: pointer;
      justify-content: center;
      min-width: 120px;
      height: 48px;
      background-repeat: no-repeat;
      background-position: center;
      background-image: url("../assets/viewTabBtn.svg");

      &.more {
        position: relative;
        overflow: visible;

        &:hover {
          background-image: url("../assets/moreViewsBtn.svg");

          .moreViews {
            display: block;
          }
        }
      }

      &.active {
        position: relative;
        background-image: none;

        &:before {
          content: " ";
          display: block;
          position: absolute;
          width: 126px;
          height: 38px;
          left: 50%;
          top: 50%;
          transform: translate(-50%, -50%);
          background-image: url("../assets/viewTabBtn-active.svg");
        }
      }

      & + .btn, & + .moreTabs {
        margin-left: 10px;
      }
    }
  }

  .settingZone {
    display: flex;
    align-items: center;
    font-family: DIN, serif;
    height: 60px;
    justify-content: flex-end;
    font-size: 18px;
    z-index: 5;

    .rightTopBorder + .rightTopBorder {
      margin-left: 10px;
    }

    .time {
      width: 200px;
    }

    .setting {
      background-image: url("../assets/setting.svg");
    }

    .fullscreen {
      background-image: url("../assets/fullscreen.svg");
    }
  }

  .headerCenter {
    width: 880px;
    height: 90px;
    z-index: 3;
    background-repeat: no-repeat;
    background-position: center -32px;
    background-image: url("../assets/headerCenterBg1.svg");

    &:before {
      content: " ";
      display: block;
      position: absolute;
      background: linear-gradient(180deg, #040718 0%, rgba(4, 7, 24, 0) 100%);
      top: 0;
      left: 0;
      right: 0;
      pointer-events: none;
      height: 64px;
      z-index: 4;
    }

    .headerZone {
      position: relative;
      margin: 0 auto;
      width: 760px;
      height: 124px;
      background-repeat: no-repeat;
      background-image: url("../assets/headerCenterBorderLight.svg"), url("../assets/headerCenterBorder.svg"), url("../assets/headerCenterBg2.png");
      background-position: center bottom, center 0, center -20px;
      overflow: visible;

      & > span {
        position: absolute;
        left: 50%;
        top: calc(50% - 20px);
        transform: translate(-50%, -50%);
        white-space: nowrap;
        font-size: 40px;
        line-height: 47px;
        letter-spacing: 5px;
        text-shadow: 0 0 8px #1365FF, 0 0 2px rgba(133, 181, 255, .5);
        z-index: 9;
        font-weight: bold;
      }

      .fly {
        position: absolute;
        top: 0;
        width: 600px;
        height: 90px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 3;
      }
    }
  }

  .headerBottomBorder {
    position: relative;
    width: 538px;
    height: 15px;
    background-image: url("../assets/headerBottomBorder.svg");

    &:before {
      content: " ";
      display: block;
      position: absolute;
      left: -3px;
      bottom: -3px;
      width: 40px;
      height: 12px;
      background-image: url("../assets/headerBottomLight.svg");
    }

    .breatheLights {
      position: absolute;
      right: -7px;
      bottom: -20px;
      transform: translateX(100%);
      width: 132px;
      height: 20px;
      animation: breathes 1.5s ease-in-out infinite alternate;
      animation-delay: .5s;
      display: flex;
      background-repeat: no-repeat;

      &:before {
        transform: translateX(calc(6px - 100%));
        display: block;
        content: " ";
        width: 44px;
        height: 20px;
        animation: breathes 1.5s ease-in-out infinite alternate;
      }

      &:after {
        transform: translateX(-6px);
        display: block;
        content: " ";
        width: 44px;
        height: 20px;
        animation: breathes 1.5s infinite alternate;
        animation-delay: 1s;
      }
    }

    &.right {
      float: right;
      transform: rotateY(180deg);
    }
  }

  .moreViews {
    display: none;
    position: absolute;
    bottom: 0;
    transform: translateY(100%);
    width: 120px;
    min-width: 120px;
    padding: 0;
    background: rgba(9, 43, 75, 0.5);
    box-shadow: 0 0 8px 0 #20B8FF inset;
    border: 1px solid #66DBFF;
    border-radius: 0;
    z-index: 2;

    .moreViewItem {
      height: 44px;
      width: 100px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-bottom: 1px solid #0C5369;
      margin: 0 10px;
      color: #fff;
      cursor: pointer;

      &:last-of-type {
        border-bottom: none;
      }

      &.active, &:hover {
        color: #FFDB52;
      }
    }
  }
}
</style>
