54 lines
2.3 KiB
TypeScript
54 lines
2.3 KiB
TypeScript
const MS_MINUTE = 60_000;
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const MS_HOUR = 60 * MS_MINUTE;
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const MS_DAY = 24 * MS_HOUR;
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function shanghaiParts(input: string | Date) {
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const d = input instanceof Date ? input : new Date(input);
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if (Number.isNaN(d.getTime())) return null;
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const sh = new Date(d.getTime() + 8 * 60 * 60 * 1000);
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const p = (n: number) => String(n).padStart(2, '0');
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return {
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year: sh.getUTCFullYear(),
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month: p(sh.getUTCMonth() + 1),
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day: p(sh.getUTCDate()),
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hour: p(sh.getUTCHours()),
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minute: p(sh.getUTCMinutes()),
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};
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}
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/** 核销走马灯时间：24 小时内相对时间，超过则显示具体时间 */
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export function formatRedeemRelativeTime(input?: string | Date | null): string {
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if (input == null || input === '') return '刚刚';
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const at = input instanceof Date ? input : new Date(input);
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if (Number.isNaN(at.getTime())) return '刚刚';
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const diffMs = Date.now() - at.getTime();
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if (diffMs < MS_MINUTE) return '刚刚';
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if (diffMs < MS_HOUR) return `${Math.floor(diffMs / MS_MINUTE)}分钟前`;
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if (diffMs < MS_DAY) return `${Math.floor(diffMs / MS_HOUR)}小时前`;
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const parts = shanghaiParts(at);
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if (!parts) return '刚刚';
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const nowParts = shanghaiParts(new Date());
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const datePrefix =
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nowParts && parts.year === nowParts.year
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? `${parts.month}-${parts.day}`
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: `${parts.year}-${parts.month}-${parts.day}`;
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return `${datePrefix} ${parts.hour}:${parts.minute}`;
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}
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/** 格式化为 Asia/Shanghai：2026-08-03 15:14:30（不依赖 Intl，兼容微信小程序） */
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export function formatShanghaiDateTime(input?: string | Date | null): string {
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if (input == null || input === '') return '—';
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if (typeof input === 'string') {
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const s = input.trim();
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if (/^\d{4}-\d{2}-\d{2}[ T]\d{2}:\d{2}/.test(s)) {
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return s.slice(0, 19).replace('T', ' ');
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}
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}
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const d = input instanceof Date ? input : new Date(input);
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if (Number.isNaN(d.getTime())) return '—';
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// 用 UTC 读数 + 固定东八区偏移，避免依赖 Intl / 设备时区 API 差异
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const sh = new Date(d.getTime() + 8 * 60 * 60 * 1000);
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const p = (n: number) => String(n).padStart(2, '0');
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return `${sh.getUTCFullYear()}-${p(sh.getUTCMonth() + 1)}-${p(sh.getUTCDate())} ${p(sh.getUTCHours())}:${p(sh.getUTCMinutes())}:${p(sh.getUTCSeconds())}`;
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}
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