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TanTan committed 2026-11-13 09:01:47 +08:00
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/**
* 服务器时间矫正 - 全局 Hook
*
* 保留 Date.now 原始引用,启动后通过 getServerTime 计算偏移量,
* 直接覆盖 Date.now(),使全局所有调用自动获得矫正后的时间戳。
*/
/** 原始 Date.now 引用,不受 hook 影响 */
export const OriginalDateNow: () => number = Date.now.bind(Date);
/**
* 初始化全局时间矫正,覆盖 Date.now()
* @param getServerTimeFn 获取服务器时间的函数,返回毫秒级时间戳字符串
* @returns 偏移量(毫秒)
*/
export function hookGlobalDateNow (getServerTimeFn: () => string): number {
const start = OriginalDateNow();
const serverTimeStr = getServerTimeFn();
const end = OriginalDateNow();
const serverTimeMs = parseInt(serverTimeStr, 10);
if (isNaN(serverTimeMs) || serverTimeMs <= 0) {
return 0;
}
// 补偿网络延迟:假定往返时间对称,服务器时间对应本地时间的中点 (start + end) / 2
const offsetMs = Math.round(serverTimeMs - (start + end) / 2);
if (Math.abs(offsetMs) > 5000) {
Date.now = () => OriginalDateNow() + offsetMs;
}
return offsetMs;
}