create-iking-admin/template-micro/iking-main-admin/src/global/hooks/web/useECharts.ts

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import { useBreakpoint } from '@/global/hooks/event/useBreakpoint';
import { useEventListener } from '@/global/hooks/event/useEventListener';
import { useRootSetting } from '@/global/hooks/setting/useRootSetting';
import echarts from '@/mainApp/utils/lib/echarts';
import { tryOnUnmounted, useDebounceFn } from '@vueuse/core';
import type { EChartsOption } from 'echarts';
import { ikingCore } from 'iking-vue-hooks';
import type { Ref } from 'vue';
import { computed, nextTick, ref, unref, watch } from 'vue';

export function useECharts(
  elRef: Ref<HTMLDivElement>,
  theme: 'light' | 'dark' | 'default' = 'default',
) {
  const { getDarkMode: getSysDarkMode } = useRootSetting();

  const getDarkMode = computed(() => {
    return theme === 'default' ? getSysDarkMode.value : theme;
  });
  let chartInstance: echarts.ECharts | null = null;
  let resizeFn: Fn = resize;
  const cacheOptions = ref({}) as Ref<EChartsOption>;
  let removeResizeFn: Fn = () => {};

  resizeFn = useDebounceFn(resize, 200);

  const getOptions = computed(() => {
    if (getDarkMode.value !== 'dark') {
      return cacheOptions.value as EChartsOption;
    }
    return {
      backgroundColor: 'transparent',
      ...cacheOptions.value,
    } as EChartsOption;
  });

  function initCharts(t = theme) {
    const el = unref(elRef);
    if (!el || !unref(el)) {
      return;
    }

    chartInstance = echarts.init(el, t);
    const { removeEvent } = useEventListener({
      el: window,
      name: 'resize',
      listener: resizeFn,
    });
    removeResizeFn = removeEvent;
    const { widthRef, screenEnum } = useBreakpoint();
    if (unref(widthRef) <= screenEnum.MD || el.offsetHeight === 0) {
      ikingCore.useTimeoutFn(() => {
        resizeFn();
      }, 30);
    }
  }

  function setOptions(options: EChartsOption, clear = true) {
    cacheOptions.value = options;
    if (unref(elRef)?.offsetHeight === 0) {
      ikingCore.useTimeoutFn(() => {
        setOptions(unref(getOptions));
      }, 30);
      return;
    }
    nextTick(() => {
      ikingCore.useTimeoutFn(() => {
        if (!chartInstance) {
          initCharts(getDarkMode.value as 'default');

          if (!chartInstance) return;
        }
        clear && chartInstance?.clear();

        chartInstance?.setOption(unref(getOptions));
      }, 30);
    });
  }

  function resize() {
    chartInstance?.resize();
  }

  watch(
    () => getDarkMode.value,
    (theme) => {
      if (chartInstance) {
        chartInstance.dispose();
        initCharts(theme as 'default');
        setOptions(cacheOptions.value);
      }
    },
  );

  tryOnUnmounted(() => {
    if (!chartInstance) return;
    removeResizeFn();
    chartInstance.dispose();
    chartInstance = null;
  });

  function getInstance(): echarts.ECharts | null {
    if (!chartInstance) {
      initCharts(getDarkMode.value as 'default');
    }
    return chartInstance;
  }

  return {
    setOptions,
    resize,
    echarts,
    getInstance,
  };
}