<template>
  <div class="sidebar-logo-container" :class="{'collapse':collapse}" :style="{ backgroundColor: sideTheme === 'theme-dark' ? variables.menuBackground : variables.menuLightBackground }">
    <transition name="sidebarLogoFade">
      <router-link v-if="collapse" key="collapse" class="sidebar-logo-link" to="/">
        <img v-if="logo" :src="logo" :class=" hsige ?'sidebar-logo' :'sidebar-logos'" />
        <!-- <h1 v-else class="sidebar-title" :style="{ color: sideTheme === 'theme-dark' ? variables.logoTitleColor : variables.logoLightTitleColor }">{{ title }} </h1> -->
      </router-link>
      <router-link v-else key="expand" class="sidebar-logo-link" to="/">
        <img v-if="logo" :src="logo" :class=" hsige ?'sidebar-logo' :'sidebar-logos'" />
        <!-- <h1 class="sidebar-title" :style="{ color: sideTheme === 'theme-dark' ? variables.logoTitleColor : variables.logoLightTitleColor }">{{ title }} </h1> -->
      </router-link>
    </transition>
  </div>
</template>

<script>
import logoImg from '@/assets/images/pic_yqyd_logo.png'
import logoImgf from '@/assets/images/loginse.png'
import variables from '@/assets/styles/variables.scss'

export default {
  name: 'SidebarLogo',
  props: {
    collapse: {
      type: Boolean,
      required: true
    }
  },
  computed: {
    variables() {
      return variables
    },
    sideTheme() {
      return this.$store.state.settings.sideTheme
    }
  },
  data() {
    return {
      title: process.env.VUE_APP_TITLE,
      logo: logoImg,
	  hsige:true
    }
  },
  mounted() {
  	window.addEventListener('scroll', this.windowScroll)
  },
  methods:{
	windowScroll() {
	    let scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
		// console.log(scrollTop)
		if(scrollTop  < 13){
			this.logo = logoImg
			this.hsige = true
		}else{
			this.logo = logoImgf
			this.hsige = false
		}
	},
  }
}
</script>

<style lang="scss" scoped>
.sidebarLogoFade-enter-active {
  transition: opacity 1.5s;
}

.sidebarLogoFade-enter,
.sidebarLogoFade-leave-to {
  opacity: 0;
}

.sidebar-logo-container {
  position: relative;
  width: 100%;
  height: 50px;
  line-height: 50px;
  background: #2b2f3a;
  text-align: center;
  // overflow: hidden;
   // box-shadow: 0 1px 4px rgba(0,21,41,.08);

  & .sidebar-logo-link {
    height: 100%;
    width: 100%;

    & .sidebar-logo {
      width: 320px;
      height: 33px;
      vertical-align: middle;
      margin-left: 12px;
	  margin-top: -3px;
    }
	& .sidebar-logos {
	  width: 150px;
	  height: 33px;
	  vertical-align: middle;
	  margin-top: -3px;
	}

    & .sidebar-title {
      display: inline-block;
      margin: 0;
      color: #fff;
      font-weight: 600;
      line-height: 50px;
      font-size: 14px;
      font-family: Avenir, Helvetica Neue, Arial, Helvetica, sans-serif;
      vertical-align: middle;
    }
  }

  &.collapse {
    .sidebar-logo {
      margin-right: 0px;
    }
  }
}
</style>
