Improvements todo created and small bugfixes

test_timezone.js

@@ -0,0 +1,33 @@
+const adjustForTimezone = (utcMinutes) => {
+  const offsetInMinutes = -120; // Simulate UTC+2
+  return utcMinutes - offsetInMinutes;
+};
+
+const formatMinutesAfter = (minutes, reference = "04:00") => {
+  const [refHours, refMinutes] = reference.split(":").map(Number);
+  const totalRefMinutes = refHours * 60 + refMinutes;
+  const targetMinutes = totalRefMinutes + minutes;
+  const normalizedMinutes = ((targetMinutes % 1440) + 1440) % 1440;
+  const hours = Math.floor(normalizedMinutes / 60);
+  const mins = normalizedMinutes % 60;
+  return `${String(hours).padStart(2, "0")}:${String(mins).padStart(2, "0")}`;
+};
+
+// Case 1: Backend sends offset from 04:00 UTC (-5 minutes)
+const backendOffset = -5;
+const adjusted = adjustForTimezone(backendOffset);
+console.log("Adjusted offset:", adjusted); // Should be 115
+console.log("Formatted time:", formatMinutesAfter(adjusted, "04:00")); // Should be 05:55
+
+// Case 2: Backend sends minutes from UTC midnight (235 minutes)
+const backendMidnightMins = 235;
+const adjusted2 = adjustForTimezone(backendMidnightMins);
+console.log("Adjusted midnight mins:", adjusted2); // Should be 355
+// If we use it as an offset from reference:
+console.log("Formatted time (as offset):", formatMinutesAfter(adjusted2, "04:00")); // Should be 09:55 (WRONG if it was supposed to be 05:55)
+
+// If we want the offset from reference for Case 2:
+const refMins = 4 * 60;
+const correctOffset = adjusted2 - refMins; // 355 - 240 = 115
+console.log("Corrected offset (from midnight):", correctOffset); // 115
+console.log("Formatted time (corrected):", formatMinutesAfter(correctOffset, "04:00")); // 05:55