admin-vben/apps/web-antd/src/views/iot/home/modules/message-trend-card.vue

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<script lang="ts" setup>
import type { Dayjs } from 'dayjs';
import type { IotStatisticsApi } from '#/api/iot/statistics';
import { computed, nextTick, onMounted, reactive, ref } from 'vue';
import { DICT_TYPE } from '@vben/constants';
import { getDictOptions } from '@vben/hooks';
import { EchartsUI, useEcharts } from '@vben/plugins/echarts';
import { Card, Empty, Select } from 'ant-design-vue';
import dayjs from 'dayjs';
import { getDeviceMessageSummaryByDate } from '#/api/iot/statistics';
import ShortcutDateRangePicker from '#/components/shortcut-date-range-picker/shortcut-date-range-picker.vue';
import { getMessageTrendChartOptions } from '../chart-options';
defineOptions({ name: 'MessageTrendCard' });
const messageChartRef = ref();
const { renderEcharts } = useEcharts(messageChartRef);
const loading = ref(false); // 加载状态
const messageData = ref<IotStatisticsApi.DeviceMessageSummaryByDateRespVO[]>(
[],
); // 消息趋势数据
const isFirstMount = ref(true); // 首次挂载标记,用于跳过子组件 mount 时的默认 emit
/** 时间范围(仅日期,不包含时分秒) */
const dateRange = ref<[string, string]>([
// 默认显示最近一周的数据(包含今天和前六天)
dayjs().subtract(6, 'day').format('YYYY-MM-DD'),
dayjs().format('YYYY-MM-DD'),
]);
/** 将日期范围转换为带时分秒的格式 */
function formatDateRangeWithTime(dates: [string, string]): [string, string] {
return [`${dates[0]} 00:00:00`, `${dates[1]} 23:59:59`];
}
/** 查询参数 */
const queryParams = reactive<IotStatisticsApi.DeviceMessageReqVO>({
interval: 1, // 默认按天
times: formatDateRangeWithTime(dateRange.value),
});
/** 是否有数据 */
const hasData = computed(() => {
return messageData.value && messageData.value.length > 0;
});
/** 时间间隔字典选项 */
const intervalOptions = computed(() =>
getDictOptions(DICT_TYPE.DATE_INTERVAL, 'number').map((item) => ({
label: item.label,
value: item.value as number,
})),
);
/** 处理查询操作 */
function handleQuery() {
fetchMessageData();
}
/** 处理时间范围变化 */
function handleDateRangeChange(times?: [Dayjs, Dayjs]) {
if (!times || times.length !== 2) {
return;
}
dateRange.value = [
dayjs(times[0]).format('YYYY-MM-DD'),
dayjs(times[1]).format('YYYY-MM-DD'),
];
// 将选择的日期转换为带时分秒的格式(开始日期 00:00:00结束日期 23:59:59
queryParams.times = formatDateRangeWithTime(dateRange.value);
if (isFirstMount.value) {
// 子组件 ShortcutDateRangePicker mount 时会 emit 一次默认日期范围,跳过 fetch
// 首次请求统一由父组件 onMounted 发起,避免双请求
return;
}
handleQuery();
}
/** 处理时间间隔变化 */
function handleIntervalChange() {
handleQuery();
}
/** 获取消息统计数据 */
async function fetchMessageData() {
if (!queryParams.times || queryParams.times.length !== 2) {
return;
}
loading.value = true;
try {
messageData.value = await getDeviceMessageSummaryByDate(queryParams);
} finally {
loading.value = false;
await renderChartWhenReady();
}
}
/** 初始化图表 */
function initChart() {
// 检查数据是否存在
if (!hasData.value) {
return;
}
const times = messageData.value.map((item) => item.time);
const upstreamData = messageData.value.map((item) => item.upstreamCount);
const downstreamData = messageData.value.map((item) => item.downstreamCount);
renderEcharts(
getMessageTrendChartOptions(times, upstreamData, downstreamData),
);
}
/** 确保图表容器已经可见后再渲染 */
async function renderChartWhenReady() {
if (!hasData.value) {
return;
}
// 等待 Card loading 状态、v-show 等 DOM 更新完成
await nextTick();
await nextTick();
initChart();
}
// 父组件挂载后统一发起首次请求;
// 原因:子组件 ShortcutDateRangePicker 早期 emit 触发的请求落在 useEcharts isActiveRef = false 阶段,会被 renderEcharts 静默丢弃;
// 通过 handleDateRangeChange 在 isFirstMount=true 时跳过 fetch由这里统一发起一次避免双请求
onMounted(() => {
fetchMessageData();
isFirstMount.value = false;
});
</script>
<template>
<Card class="h-full">
<template #title>
<div class="flex flex-wrap items-center justify-between gap-4">
<span class="text-base font-medium text-gray-600">消息量统计</span>
<div class="flex flex-wrap items-center gap-4">
<div class="flex items-center gap-3">
<span class="whitespace-nowrap text-sm text-gray-500">
时间范围
</span>
<ShortcutDateRangePicker @change="handleDateRangeChange" />
</div>
<div class="flex items-center gap-2">
<span class="text-sm text-gray-500">时间间隔</span>
<Select
v-model:value="queryParams.interval"
:options="intervalOptions"
placeholder="间隔类型"
:style="{ width: '80px' }"
@change="handleIntervalChange"
/>
</div>
</div>
</div>
</template>
<!-- 加载中状态 -->
<div
v-show="loading && !hasData"
class="flex h-[300px] items-center justify-center"
>
<Empty description="加载中..." />
</div>
<!-- 无数据状态 -->
<div
v-show="!loading && !hasData"
class="flex h-[300px] items-center justify-center"
>
<Empty description="暂无数据" />
</div>
<!-- 图表容器 - 使用 v-show 而非 v-if确保组件始终挂载 -->
<div v-show="hasData">
<EchartsUI ref="messageChartRef" class="h-[300px] w-full" />
</div>
</Card>
</template>