vf_react/src/components/StockChart/hooks/useEventMarker.ts

/**
 * useEventMarker Hook
 *
 * 管理事件标记的创建、更新和删除
 */

import { useEffect, useState, useCallback } from 'react';
import type { Chart } from 'klinecharts';
import type { EventMarker, KLineDataPoint } from '../types';
import {
  createEventMarkerFromTime,
  createEventMarkerOverlay,
  createEventHighlightOverlay,
  removeAllEventMarkers,
} from '../utils/eventMarkerUtils';

export interface UseEventMarkerOptions {
  /** KLineChart 实例 */
  chart: Chart | null;
  /** K 线数据（用于定位标记） */
  data: KLineDataPoint[];
  /** 事件时间（ISO 字符串） */
  eventTime?: string;
  /** 事件标题（用于标记标签） */
  eventTitle?: string;
  /** 是否自动创建标记 */
  autoCreate?: boolean;
}

export interface UseEventMarkerReturn {
  /** 当前标记 */
  marker: EventMarker | null;
  /** 标记 ID（已添加到图表） */
  markerId: string | null;
  /** 创建标记 */
  createMarker: (time: string, label: string, color?: string) => void;
  /** 移除标记 */
  removeMarker: () => void;
  /** 移除所有标记 */
  removeAllMarkers: () => void;
}

/**
 * 事件标记管理 Hook
 *
 * @param options 配置选项
 * @returns UseEventMarkerReturn
 *
 * @example
 * const { marker, createMarker, removeMarker } = useEventMarker({
 *   chart,
 *   data,
 *   eventTime: '2024-01-01 10:00:00',
 *   eventTitle: '重大公告',
 *   autoCreate: true,
 * });
 */
export const useEventMarker = (
  options: UseEventMarkerOptions
): UseEventMarkerReturn => {
  const {
    chart,
    data,
    eventTime,
    eventTitle = '事件发生',
    autoCreate = true,
  } = options;

  const [marker, setMarker] = useState<EventMarker | null>(null);
  const [markerId, setMarkerId] = useState<string | null>(null);
  const [highlightId, setHighlightId] = useState<string | null>(null);

  /**
   * 创建事件标记
   */
  const createMarker = useCallback(
    (time: string, label: string, color?: string) => {
      if (!chart || !data || data.length === 0) {
        return;
      }

      try {
        // 1. 创建事件标记配置
        const eventMarker = createEventMarkerFromTime(time, label, color);
        setMarker(eventMarker);

        // 2. 创建 Overlay
        const overlay = createEventMarkerOverlay(eventMarker, data);

        if (!overlay) {
          return;
        }

        // 3. 添加到图表
        const id = chart.createOverlay(overlay);

        if (!id || (Array.isArray(id) && id.length === 0)) {
          return;
        }

        const actualId = Array.isArray(id) ? id[0] : id;
        setMarkerId(actualId as string);

        // 4. 创建黄色高亮背景（事件影响日）
        const highlightOverlay = createEventHighlightOverlay(time, data);
        if (highlightOverlay) {
          const highlightResult = chart.createOverlay(highlightOverlay);
          const actualHighlightId = Array.isArray(highlightResult) ? highlightResult[0] : highlightResult;
          setHighlightId(actualHighlightId as string);
        }
      } catch (err) {
        // 忽略创建标记时的错误
      }
    },
    [chart, data]
  );

  /**
   * 移除事件标记
   */
  const removeMarker = useCallback(() => {
    if (!chart) {
      return;
    }

    try {
      if (markerId) {
        chart.removeOverlay({ id: markerId });
      }
      if (highlightId) {
        chart.removeOverlay({ id: highlightId });
      }

      setMarker(null);
      setMarkerId(null);
      setHighlightId(null);
    } catch (err) {
      // 忽略移除标记时的错误
    }
  }, [chart, markerId, highlightId]);

  /**
   * 移除所有标记
   */
  const removeAllMarkers = useCallback(() => {
    if (!chart) {
      return;
    }

    try {
      removeAllEventMarkers(chart);
      setMarker(null);
      setMarkerId(null);
      setHighlightId(null);
    } catch (err) {
      // 忽略移除所有标记时的错误
    }
  }, [chart]);

  // 自动创建标记（当 eventTime 和数据都准备好时）
  useEffect(() => {
    if (
      autoCreate &&
      eventTime &&
      chart &&
      data &&
      data.length > 0 &&
      !markerId // 避免重复创建
    ) {
      createMarker(eventTime, eventTitle);
    }
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [eventTime, chart, data, autoCreate]);

  // 清理：组件卸载时移除所有标记
  useEffect(() => {
    return () => {
      if (chart) {
        try {
          if (markerId) {
            chart.removeOverlay({ id: markerId });
          }
          if (highlightId) {
            chart.removeOverlay({ id: highlightId });
          }
        } catch (err) {
          // 忽略清理时的错误
        }
      }
    };
  }, [chart, markerId, highlightId]);

  return {
    marker,
    markerId,
    createMarker,
    removeMarker,
    removeAllMarkers,
  };
};