842cb23e1f
Introduces a CA/PKI module so field devices can authenticate to Mosquitto over TLS (8883) with per-device client certificates (CN = serial number) instead of a shared password, with matching Devices/MQTT-Certs UI. Adds live transmitter position tracking alongside logged points, an MQTTS transport option in the simulator for exercising the real cert-auth path, and Swagger API docs at /api/docs. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
25 lines
667 B
TypeScript
25 lines
667 B
TypeScript
const UNITS: Array<[string, number]> = [
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['year', 365 * 24 * 60 * 60],
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['day', 24 * 60 * 60],
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['hr', 60 * 60],
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['min', 60],
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];
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// "just now", "1 min ago", "10 min ago", "3 days ago", …
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export function formatRelativeTime(iso: string | null, now: number = Date.now()): string {
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if (!iso) {
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return 'never';
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}
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const seconds = Math.floor((now - new Date(iso).getTime()) / 1000);
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if (seconds < 45) {
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return 'just now';
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}
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for (const [label, secondsPerUnit] of UNITS) {
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const value = Math.floor(seconds / secondsPerUnit);
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if (value >= 1) {
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return `${value} ${label}${value === 1 ? '' : 's'} ago`;
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}
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}
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return 'just now';
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}
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