File size: 946 Bytes
ee888e1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | 'use strict';
function toLocalHour(nowMs, timezone) {
try {
const parts = new Intl.DateTimeFormat('en-US', {
timeZone: timezone,
hour: 'numeric',
hour12: false,
}).formatToParts(new Date(nowMs));
const h = parts.find(p => p.type === 'hour');
return h ? parseInt(h.value, 10) : -1;
} catch {
return -1;
}
}
function isInQuietHours(rule, nowMs = Date.now()) {
if (!rule.quietHoursEnabled) return false;
const start = rule.quietHoursStart ?? 22;
const end = rule.quietHoursEnd ?? 7;
if (start === end) return false; // same hour = no quiet window
const tz = rule.quietHoursTimezone ?? 'UTC';
const localHour = toLocalHour(nowMs, tz);
if (localHour === -1) return false;
// spans midnight when start > end (e.g. 23:00-07:00)
return start < end
? localHour >= start && localHour < end
: localHour >= start || localHour < end;
}
module.exports = { toLocalHour, isInQuietHours };
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