Not sure what happened here...

2026-05-27 09:53:44 +02:00
parent 648d376a12
commit 7cef6da5f2
33 changed files with 664 additions and 191 deletions
@@ -19,6 +19,15 @@ export function formatMinutesAfter(minutes, reference = "04:00") {
    const mins = normalizedMinutes % 60;
    return `${String(hours).padStart(2, "0")}:${String(mins).padStart(2, "0")}`;
 }
+/**
+ * Adjust minutes by the local timezone offset
+ * @param utcMinutes - minutes from UTC midnight
+ * @returns adjusted minutes for local time
+ */
+export function adjustForTimezone(utcMinutes) {
+    const offsetInMinutes = new Date().getTimezoneOffset();
+    return utcMinutes - offsetInMinutes;
+}
 /**
 * Convert a Date to datetime-local input value format (local time)
 * @param date - Date object
@@ -99,9 +108,20 @@ export function getToday() {
 * @returns total minutes
 */
 export function timeToMinutes(timeStr) {
+    if (!timeStr || typeof timeStr !== 'string') return 0;
    const [hours, minutes] = timeStr.split(":").map(Number);
    return hours * 60 + minutes;
 }
+/**
+ * Get the offset from a reference time in local minutes
+ * @param utcMinutesFromMidnight - minutes from UTC midnight
+ * @param referenceHHMM - reference time as HH:MM string
+ * @returns local offset from reference in minutes
+ */
+export function getLocalOffsetFromReference(utcMinutesFromMidnight, referenceHHMM) {
+    const localMinsFromMidnight = adjustForTimezone(utcMinutesFromMidnight);
+    return localMinsFromMidnight - timeToMinutes(referenceHHMM);
+}
 /**
 * Convert total minutes to a human-readable string (e.g., "1h 30m" or "45m")
 * @param totalMinutes - Total number of minutes