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Fixing timezone issue with caldav.

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This commit is contained in:
Burak Kaan Köse
2026-02-19 02:09:36 +01:00
parent 564cb0b16f
commit 317113a1b3
4 changed files with 199 additions and 11 deletions
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Wino.Core/Integration/Processors/ImapChangeProcessor.cs
+49 -7
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@@ -40,18 +40,29 @@ public class ImapChangeProcessor : DefaultChangeProcessor, IImapChangeProcessor
var savingItemId = existingItem?.Id ?? Guid.NewGuid();
var savingItem = existingItem ?? new CalendarItem { Id = savingItemId };
var start = calendarEvent.Start.UtcDateTime;
var end = calendarEvent.End.UtcDateTime;
var startTimeZone = NormalizeTimeZoneId(calendarEvent.StartTimeZone, calendarEvent.Start);
var endTimeZone = NormalizeTimeZoneId(calendarEvent.EndTimeZone, calendarEvent.End);
if (string.IsNullOrWhiteSpace(endTimeZone))
endTimeZone = startTimeZone;
if (end <= start)
end = start.AddHours(1);
var start = ConvertToEventWallClock(calendarEvent.Start, startTimeZone);
var end = ConvertToEventWallClock(calendarEvent.End, endTimeZone);
var durationInSeconds = (calendarEvent.End - calendarEvent.Start).TotalSeconds;
if (durationInSeconds <= 0)
{
if (end <= start)
end = start.AddHours(1);
durationInSeconds = (end - start).TotalSeconds;
}
savingItem.RemoteEventId = calendarEvent.RemoteEventId;
savingItem.CalendarId = assignedCalendar.Id;
savingItem.StartDate = start;
savingItem.DurationInSeconds = (end - start).TotalSeconds;
savingItem.StartTimeZone = calendarEvent.StartTimeZone;
savingItem.EndTimeZone = calendarEvent.EndTimeZone;
savingItem.DurationInSeconds = durationInSeconds;
savingItem.StartTimeZone = startTimeZone;
savingItem.EndTimeZone = endTimeZone;
savingItem.Title = calendarEvent.Title;
savingItem.Description = calendarEvent.Description;
savingItem.Location = calendarEvent.Location;
@@ -158,4 +169,35 @@ public class ImapChangeProcessor : DefaultChangeProcessor, IImapChangeProcessor
await DeleteCalendarItemAsync(item.Id).ConfigureAwait(false);
}
private static string NormalizeTimeZoneId(string timeZoneId, DateTimeOffset value)
{
if (!string.IsNullOrWhiteSpace(timeZoneId))
return timeZoneId;
if (value != default && value.Offset == TimeSpan.Zero)
return TimeZoneInfo.Utc.Id;
return string.Empty;
}
private static DateTime ConvertToEventWallClock(DateTimeOffset value, string eventTimeZoneId)
{
if (value == default)
return default;
if (string.IsNullOrWhiteSpace(eventTimeZoneId))
return DateTime.SpecifyKind(value.DateTime, DateTimeKind.Unspecified);
try
{
var eventTimeZone = TimeZoneInfo.FindSystemTimeZoneById(eventTimeZoneId);
var inEventTimeZone = TimeZoneInfo.ConvertTime(value, eventTimeZone);
return DateTime.SpecifyKind(inEventTimeZone.DateTime, DateTimeKind.Unspecified);
}
catch
{
return DateTime.SpecifyKind(value.DateTime, DateTimeKind.Unspecified);
}
}
}