import { useRef, useCallback } from 'react';
import { useDidShow } from '@tarojs/taro';

/**
 * 带节流的 useDidShow — 距离上次执行不足 intervalMs 毫秒时跳过。
 * 返回手动强制刷新的 trigger 函数。
 */
export function useThrottledDidShow(
  fn: () => void,
  intervalMs = 5000,
): { trigger: () => void } {
  const lastRun = useRef(0);
  const fnRef = useRef(fn);
  fnRef.current = fn;

  useDidShow(() => {
    const now = Date.now();
    if (now - lastRun.current >= intervalMs) {
      lastRun.current = now;
      fnRef.current();
    }
  });

  const trigger = useCallback(() => {
    lastRun.current = Date.now();
    fnRef.current();
  }, []);

  return { trigger };
}