<template>
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<el-card class="chart-card" shadow="never" :loading="loading">
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<template #header>
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<div class="flex items-center">
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<span class="text-base font-medium text-gray-600">设备状态统计</span>
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</div>
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</template>
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<div v-if="loading && !hasData" class="h-[240px] flex justify-center items-center">
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<el-empty description="加载中..." />
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</div>
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<div v-else-if="!hasData" class="h-[240px] flex justify-center items-center">
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<el-empty description="暂无数据" />
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</div>
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<el-row v-else class="h-[240px]">
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<el-col :span="8" class="flex flex-col items-center">
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<div ref="deviceOnlineCountChartRef" class="h-[160px] w-full"></div>
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<div class="text-center mt-2">
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<span class="text-sm text-gray-600">在线设备</span>
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</div>
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</el-col>
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<el-col :span="8" class="flex flex-col items-center">
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<div ref="deviceOfflineChartRef" class="h-[160px] w-full"></div>
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<div class="text-center mt-2">
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<span class="text-sm text-gray-600">离线设备</span>
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</div>
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</el-col>
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<el-col :span="8" class="flex flex-col items-center">
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<div ref="deviceActiveChartRef" class="h-[160px] w-full"></div>
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<div class="text-center mt-2">
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<span class="text-sm text-gray-600">待激活设备</span>
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</div>
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</el-col>
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</el-row>
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</el-card>
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</template>
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<script lang="ts" setup>
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import * as echarts from 'echarts/core'
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import { GaugeChart } from 'echarts/charts'
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import { CanvasRenderer } from 'echarts/renderers'
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import { IotStatisticsSummaryRespVO } from '@/api/iot/statistics'
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import type { PropType } from 'vue'
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/** 【设备状态】统计卡片 */
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defineOptions({ name: 'DeviceStateCountCard' })
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const props = defineProps({
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statsData: {
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type: Object as PropType<IotStatisticsSummaryRespVO>,
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required: true
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},
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loading: {
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type: Boolean,
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default: false
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}
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})
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const deviceOnlineCountChartRef = ref()
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const deviceOfflineChartRef = ref()
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const deviceActiveChartRef = ref()
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/** 是否有数据 */
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const hasData = computed(() => {
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if (!props.statsData) return false
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return props.statsData.deviceCount !== -1
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})
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/** 初始化仪表盘图表 */
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const initGaugeChart = (el: any, value: number, color: string) => {
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// 确保 DOM 元素存在且已渲染
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if (!el) {
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console.warn('图表DOM元素不存在')
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return
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}
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echarts.use([GaugeChart, CanvasRenderer])
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try {
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const chart = echarts.init(el)
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chart.setOption({
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series: [
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{
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type: 'gauge',
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startAngle: 360,
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endAngle: 0,
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min: 0,
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max: props.statsData.deviceCount || 100, // 使用设备总数作为最大值
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progress: {
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show: true,
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width: 12,
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itemStyle: {
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color: color
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}
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},
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axisLine: {
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lineStyle: {
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width: 12,
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color: [[1, '#E5E7EB']]
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}
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},
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axisTick: { show: false },
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splitLine: { show: false },
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axisLabel: { show: false },
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pointer: { show: false },
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anchor: { show: false },
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title: { show: false },
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detail: {
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valueAnimation: true,
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fontSize: 24,
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fontWeight: 'bold',
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fontFamily: 'Inter, sans-serif',
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color: color,
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offsetCenter: [0, '0'],
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formatter: (value: number) => {
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return `${value} 个`
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}
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},
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data: [{ value: value }]
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}
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]
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})
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return chart
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} catch (error) {
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console.error('初始化图表失败:', error)
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return null
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}
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}
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/** 初始化所有图表 */
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const initCharts = () => {
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// 如果没有数据，则不初始化图表
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if (!hasData.value) return
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// 使用 nextTick 确保 DOM 已更新
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nextTick(() => {
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// 在线设备统计
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if (deviceOnlineCountChartRef.value) {
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initGaugeChart(deviceOnlineCountChartRef.value, props.statsData.deviceOnlineCount, '#0d9')
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}
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// 离线设备统计
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if (deviceOfflineChartRef.value) {
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initGaugeChart(deviceOfflineChartRef.value, props.statsData.deviceOfflineCount, '#f50')
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}
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// 待激活设备统计
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if (deviceActiveChartRef.value) {
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initGaugeChart(deviceActiveChartRef.value, props.statsData.deviceInactiveCount, '#05b')
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}
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})
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}
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/** 监听数据变化 */
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watch(
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() => props.statsData,
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() => {
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initCharts()
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},
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{ deep: true }
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)
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/** 组件挂载时初始化图表 */
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onMounted(() => {
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initCharts()
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})
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</script>
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