<template>
  <v-chart 
  ref="vChartRef" 
  :init-options="initOptions" 
  :theme="themeColor" 
  :option="option.value" 
  :manual-update="isPreview()" 
  autoresize
  @mouseover="handleHighlight"
  @mouseout="handleDownplay"
  ></v-chart>
</template>

<script setup lang="ts">
import { reactive, watch, PropType,onMounted } from 'vue'
import VChart from 'vue-echarts'
import { useCanvasInitOptions } from '@/hooks/useCanvasInitOptions.hook'
import { use, graphic } from 'echarts/core'
import { CanvasRenderer } from 'echarts/renderers'
import { LineChart } from 'echarts/charts'
import config, { includes } from './config'
import { mergeTheme } from '@/packages/public/chart'
import { useChartEditStore } from '@/store/modules/chartEditStore/chartEditStore'
import { chartColorsSearch, defaultTheme } from '@/settings/chartThemes/index'
import { DatasetComponent, GridComponent, TooltipComponent, LegendComponent } from 'echarts/components'
import { useChartDataFetch } from '@/hooks'
import { isPreview, colorGradientCustomMerge} from '@/utils'
import dataJson from './data.json'

const props = defineProps({
  themeSetting: {
    type: Object,
    required: true
  },
  themeColor: {
    type: Object,
    required: true
  },
  chartConfig: {
    type: Object as PropType<config>,
    required: true
  }
})

const initOptions = useCanvasInitOptions(props.chartConfig.option, props.themeSetting)

use([DatasetComponent, CanvasRenderer, LineChart, GridComponent, TooltipComponent, LegendComponent])
const chartEditStore = useChartEditStore()

const option = reactive({
  value: {}
})

// 渐变色处理
watch(
  () => chartEditStore.getEditCanvasConfig.chartThemeColor,
  (newColor: keyof typeof chartColorsSearch) => {
    try {
      if (!isPreview()) {
        const themeColor =
          colorGradientCustomMerge(chartEditStore.getEditCanvasConfig.chartCustomThemeColorInfo)[newColor] ||
          colorGradientCustomMerge(chartEditStore.getEditCanvasConfig.chartCustomThemeColorInfo)[defaultTheme]
        props.chartConfig.option.series.forEach((value: any, index: number) => {
          value.areaStyle.color = new graphic.LinearGradient(0, 0, 0, 1, [
            {
              offset: 0,
              color: themeColor[3 + index]
            },
            {
              offset: 1,
              color: 'rgba(0,0,0, 0)'
            }
          ])
        })
      }
      option.value = mergeTheme(props.chartConfig.option, props.themeSetting, includes)
      props.chartConfig.option = option.value
    } catch (error) {
      console.log(error)
    }
  },
  {
    immediate: true
  }
)

watch(
  () => props.chartConfig.option.dataset,
  () => {
    option.value = props.chartConfig.option
  }
)
let seriesDataNum = -1
let seriesDataMaxLength = 0
let intervalInstance: any = null
const duration = 1500

// 会重新选择需要选中和展示的数据
const handleSeriesData = () => {
  if (seriesDataNum > -1) {
    vChartRef.value?.dispatchAction({
      type: 'downplay',
      dataIndex: seriesDataNum
    })
  }
  seriesDataNum = seriesDataNum >= seriesDataMaxLength - 1 ? 0 : seriesDataNum + 1
  vChartRef.value?.dispatchAction({
    type: 'showTip',
    seriesIndex: 0,
    dataIndex: seriesDataNum
  })
}

// 新增轮播
const addPieInterval = (newData?: typeof dataJson, skipPre = false) => {
  if (!skipPre && !Array.isArray(newData?.source)) return
  if (!skipPre) seriesDataMaxLength = newData?.source.length || 0
  clearInterval(intervalInstance)
  intervalInstance = setInterval(() => {
    handleSeriesData()
  }, duration)
}

// 取消轮播
const clearPieInterval = () => {
  vChartRef.value?.dispatchAction({
    type: 'hideTip',
    seriesIndex: 0,
    dataIndex: seriesDataNum
  })
  vChartRef.value?.dispatchAction({
    type: 'downplay',
    dataIndex: seriesDataNum
  })
  clearInterval(intervalInstance)
  intervalInstance = null
}

// 处理鼠标聚焦高亮内容
const handleHighlight = () => {
  clearPieInterval()
}

// 处理鼠标取消悬浮
const handleDownplay = () => {
  if (props.chartConfig.option.isCarousel && !intervalInstance) {
    // 恢复轮播
    addPieInterval(undefined, true)
  }
}

watch(
  () => props.chartConfig.option.isCarousel,
  newData => {
    if (newData) {
      addPieInterval(undefined, true)
      props.chartConfig.option.legend.show = false
    } else {
      props.chartConfig.option.legend.show = true
      clearPieInterval()
    }
  }
)

const { vChartRef } = useChartDataFetch(props.chartConfig, useChartEditStore, (newData: typeof dataJson) => {
  addPieInterval(newData)
})

onMounted(() => {
  seriesDataMaxLength = dataJson.source.length
  if (props.chartConfig.option.isCarousel) {
    addPieInterval(undefined, true)
  }
})
</script>