emsfront/src/views/ems/dzjk/home/WeekChart.vue

<template>
  <el-card shadow="always" class="common-card-container common-card-container-body-no-padding time-range-card">
    <div slot="header" class="time-range-header">
      <span class="card-title">一周充放曲线</span>
      <date-range-select ref="dateRangeSelect" :showIcon="true" :mini-time-picker="true" @updateDate="updateDate"/>
    </div>
    <div style="height: 310px" id="weekChart"></div>
  </el-card>
</template>

<script>
import * as echarts from 'echarts'
import resize from '@/mixins/ems/resize'
import DateRangeSelect from '@/components/Ems/DateRangeSelect/index.vue'
import {getProjectDisplayData} from '@/api/ems/dzjk'
import {getPointConfigCurve} from '@/api/ems/site'

export default {
  mixins: [resize],
  components: {DateRangeSelect},
  data() {
    return {
      chart: null,
      timeRange: [],
      siteId: '',
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    // 更新时间范围 重置图表
    updateDate(data) {
      this.timeRange = data
      this.getWeekKData()
    },
    getWeekKData() {
      this.showLoading()
      const {siteId, timeRange} = this
      getProjectDisplayData(siteId).then(response => {
        const displayData = response?.data || []
        const sectionRows = displayData.filter(item =>
          item && item.sectionName === '一周充放曲线' && item.useFixedDisplay !== 1 && item.dataPoint
        )
        const tasks = sectionRows.map(row => {
          const pointId = String(row.dataPoint || '').trim()
          if (!pointId) return Promise.resolve(null)
          return getPointConfigCurve({
            siteId,
            pointId,
            pointType: 'data',
            rangeType: 'custom',
            startTime: this.normalizeDateTime(timeRange[0], false),
            endTime: this.normalizeDateTime(timeRange[1], true)
          }).then(curveResponse => {
            const list = curveResponse?.data || []
            return {
              name: row.fieldName || row.fieldCode || pointId,
              data: list
                .map(item => [this.parseToTimestamp(item.dataTime), Number(item.pointValue)])
                .filter(item => item[0] && !Number.isNaN(item[1]))
            }
          }).catch(() => null)
        })
        return Promise.all(tasks)
      }).then(series => {
        this.setOption((series || []).filter(Boolean))
      }).finally(() => this.hideLoading())
    },
    init(siteId) {
      //初始化 清空数据
      this.siteId = siteId
      this.timeRange = []
      this.deviceId = ''
      this.$refs.dateRangeSelect.init()
    },
    initChart() {
      this.chart = echarts.init(document.querySelector('#weekChart'))
    },
    showLoading() {
      this.chart && this.chart.showLoading()
    },
    hideLoading() {
      this.chart && this.chart.hideLoading()
    },
    normalizeDateTime(value, endOfDay) {
      const raw = String(value || '').trim()
      if (!raw) return ''
      if (raw.includes(' ')) return raw
      return `${raw} ${endOfDay ? '23:59:59' : '00:00:00'}`
    },
    parseToTimestamp(value) {
      if (!value) return null
      const t = new Date(value).getTime()
      return Number.isNaN(t) ? null : t
    },
    setOption(seriesData = []) {
      this.chart && this.chart.setOption({
        color: ['#4472c4', '#70ad47'],//所有充放电颜色保持统一
        tooltip: {
          trigger: 'axis',
          axisPointer: { type: 'cross' }
        },
        grid: {
          containLabel: true
        },
        legend: {
          left: 'center',
          bottom: '15',
        },
        xAxis: {
          type: 'time'
        },
        yAxis: [{
          type: 'value',
          name: '充电量/放电量kWh',
          axisLine: {
            lineStyle: {
              color: '#333333',
            },
            onZero: false
          }
        }],
        series: seriesData.map(item => ({
          name: item.name,
          yAxisIndex: 0,
          type: 'bar',
          data: item.data
        }))
      })
    }
  }
}
</script>