eab91174db
Co-Authored-By: Claude <noreply@anthropic.com>
44 lines
1.5 KiB
TypeScript
44 lines
1.5 KiB
TypeScript
import { useEffect, useRef } from 'react';
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interface Options {
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/** 轮询间隔(毫秒)。默认 20s。 */
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intervalMs?: number;
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/** 是否启用。默认 true。 */
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enabled?: boolean;
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}
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/**
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* 多端数据一致同步(T-8.5):以单一后端为真源,前端通过
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* - 窗口 focus / 标签可见(visibilitychange)
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* - 可见时定时轮询
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* 触发静默刷新,使本端近实时收敛到其他端(孕妇/家属/医护/运营)的改动。
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*
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* 注:V1 为"拉取式"近实时;实时推送(WebSocket/SSE)列入 V2。
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* 仅在页面可见时轮询,避免后台无谓请求。
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*/
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export function useAutoRefresh(refresh: () => void, options?: Options): void {
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const intervalMs = options?.intervalMs ?? 20000;
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const enabled = options?.enabled ?? true;
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const saved = useRef(refresh);
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useEffect(() => {
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saved.current = refresh;
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}, [refresh]);
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useEffect(() => {
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if (!enabled) return;
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const refreshIfVisible = (): void => {
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if (document.visibilityState === 'visible') saved.current();
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};
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const onFocus = (): void => saved.current();
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window.addEventListener('focus', onFocus);
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document.addEventListener('visibilitychange', refreshIfVisible);
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const id = window.setInterval(refreshIfVisible, intervalMs);
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return () => {
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window.removeEventListener('focus', onFocus);
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document.removeEventListener('visibilitychange', refreshIfVisible);
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window.clearInterval(id);
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};
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}, [intervalMs, enabled]);
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}
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