<template>
  <div style="background-color: #278df9" class="app-header">
    <h3>{{ title }}</h3>
    <el-dropdown class="avatar-container" trigger="click">
      <div class="avatar-wrapper">
        <span style="line-height:50px;">欢迎您，{{ name }}</span>
        <!--<img :src="avatar+'?imageView2/1/w/80/h/80'" class="user-avatar">-->
        <i class="el-icon-caret-bottom"/>
      </div>
      <el-dropdown-menu slot="dropdown" class="user-dropdown">
        <!--<router-link class="inlineBlock" to="/">-->
        <!--<el-dropdown-item>-->
        <!--主页-->
        <!--</el-dropdown-item>-->
        <!--</router-link>-->
        <el-dropdown-item>
          <span style="display:block;" @click="resetPwd">修改密码</span>
        </el-dropdown-item>
        <el-dropdown-item divided>
          <span style="display:block;" @click="logout">注销</span>
        </el-dropdown-item>
      </el-dropdown-menu>
    </el-dropdown>
    <reset-pwd v-show="showSetPwd" ref="retPwd"/>
  </div>
</template>

<script>
import { mapGetters } from 'vuex'
import ResetPwd from '@/views/system/user/resetPwd'
import { getProject } from '@/utils/baseConfig'
import { Notification } from 'element-ui'

export default {
  name: 'AppHeader',
  components: { ResetPwd },
  data() {
    return {
      wsPath: process.env.BASE_WS,
      title: getProject().title,
      name: this.$store.getters.name,
      showSetPwd: false
      // headerUrl: require('../../../assets/global_images/header.png')// 头部图片
    }
  },
  computed: {
    ...mapGetters([
      'sidebar',
      'avatar'
    ])
  },
  mounted() {
    this.$nextTick(() => {
      this.initWebSocket()
    })
  },
  methods: {
    initWebSocket() {
      const that = this
      if (typeof (WebSocket) === 'undefined') {
        Notification({
          title: '提示',
          message: '当前浏览器无法接收实时报警信息，请使用谷歌浏览器或360浏览器极速模式！',
          type: 'warning',
          duration: 0
        })
      } else {
        const socketUrl = this.wsPath
        console.log(socketUrl, '*********************')
        that.socket = new WebSocket(socketUrl)
        // 监听socket打开
        that.socket.onopen = function() {
          console.log('浏览器WebSocket已打开')
        }
        // 监听socket消息接收
        that.socket.onmessage = function(msg) {
          // 转换为json对象
          const data = JSON.parse(msg.data)
          if (data.type === 'gasAlarm') {
            const message = data.monitorName + '设备报警甲烷值：' + data.concentration + '，报警位置：' + data.alarmDirection + ',' + data.alarmPitch
            Notification({
              title: '甲烷超标报警',
              // 这里也可以把返回信息加入到message中显示
              message: message,
              type: 'warning'
            })
          } else if (data.type === 'strengthAlarm') {
            const message = data.monitorName + '设备报警遮挡'
            Notification({
              title: '遮挡报警',
              // 这里也可以把返回信息加入到message中显示
              message: message,
              type: 'warning'
            })
          }
        }
      }
      // 监听socket错误
      that.socket.onerror = function() {
        Notification({
          title: '服务器错误',
          message: '无法接收实时报警信息,请检查服务器后重新刷新页面',
          type: 'error',
          duration: 0
        })
      }
      // 监听socket关闭
      that.socket.onclose = function() {
        console.log('WebSocket已关闭')
      }
    },
    toggleSideBar() {
      this.$store.dispatch('ToggleSideBar')
    },
    logout() {
      if (this.$root.ws !== null) {
        this.$root.ws.close()
        this.$root.ws = null
      }
      this.$store.dispatch('LogOut').then(() => {
        location.reload() // 为了重新实例化vue-router对象 避免bug
      })
    },
    resetPwd() {
      this.showSetPwd = true
      this.$refs.retPwd.initDialog(true)
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
  .app-header{
    height:60px;
    background-color:#000000;
    background-repeat: no-repeat;
    -webkit-background-size: 100% 100%;
    background-size: 100% 100%;
    color:white;
  }
  h3{
    margin-left:40px;
    display: inline-block;
    float:left;
  }
  .avatar-container {
    height: 50px;
    display: inline-block;
    float: right;
    z-index:500;
    position: fixed;
    top:5px;
    right: 35px;
    .avatar-wrapper {
      color:#ffffff;
      cursor: pointer;
      margin-top: 5px;
      position: relative;
      line-height: initial;
      .user-avatar {
        width: 40px;
        height: 40px;
        border-radius: 10px;
      }
      .el-icon-caret-bottom {
        font-size: 12px;
      }
    }
  }
</style>