by codex: feat. General Improvements

lib/timeUtils.ts

@@ -19,6 +19,37 @@ export function formatResetCountdown(resetAtSeconds: number): string {
   return `resets in ${minutes}m`;
 }
 
+export function parseTimeInput(
+  value: string
+): { hour: number; minute: number } | null {
+  const match = value.trim().match(/^(\d{1,2}):(\d{2})$/);
+  if (!match) return null;
+
+  const hour = Number.parseInt(match[1], 10);
+  const minute = Number.parseInt(match[2], 10);
+  if (hour > 23 || minute > 59) return null;
+
+  return { hour, minute };
+}
+
+export function formatTime(hour: number, minute: number): string {
+  return `${String(hour).padStart(2, "0")}:${String(minute).padStart(2, "0")}`;
+}
+
+export function formatLastUpdated(timestamp: number, now = Date.now()): string {
+  const elapsedSeconds = Math.max(0, Math.floor((now - timestamp) / 1000));
+  if (elapsedSeconds < 60) return "Updated just now";
+
+  const minutes = Math.floor(elapsedSeconds / 60);
+  if (minutes < 60) return `Updated ${minutes} min ago`;
+
+  const hours = Math.floor(minutes / 60);
+  if (hours < 24) return `Updated ${hours} hr${hours === 1 ? "" : "s"} ago`;
+
+  const days = Math.floor(hours / 24);
+  return `Updated ${days} day${days === 1 ? "" : "s"} ago`;
+}
+
 export function formatResetCountdownISO(isoString: string): string {
   const resetAtSeconds = Math.floor(new Date(isoString).getTime() / 1000);
   return formatResetCountdown(resetAtSeconds);