Event details UI improvements.

Wino.Core.Domain/Entities/Calendar/CalendarItem.cs

@@ -17,6 +17,14 @@ public class CalendarItem : ICalendarItem
     public string Description { get; set; }
     public string Location { get; set; }
 
+    /// <summary>
+    /// Indicates whether this item is a local preview that hasn't been synced to the server yet.
+    /// When true, the item exists only in the local database without a RemoteEventId.
+    /// Used to prevent duplicates when the server returns the newly created event.
+    /// </summary>
+    [Ignore]
+    public bool IsLocalPreview => string.IsNullOrEmpty(RemoteEventId);
+
     public DateTime StartDate { get; set; }
 
     public DateTime EndDate
@@ -187,66 +195,70 @@ public class CalendarItem : ICalendarItem
     }
 
     /// <summary>
-    /// Gets the start date as a DateTimeOffset with the correct timezone.
-    /// If StartTimeZone is available, uses it to calculate the offset.
-    /// Otherwise, assumes UTC (StartDate is stored as UTC in database).
+    /// Gets the start date converted to user's local timezone for display.
+    /// StartDate is stored according to StartTimeZone.
     /// </summary>
     [Ignore]
-    public DateTimeOffset StartDateTimeOffset
+    public DateTime LocalStartDate
     {
         get
         {
-            if (!string.IsNullOrEmpty(StartTimeZone))
+            if (string.IsNullOrEmpty(StartTimeZone))
             {
-                try
-                {
-                    var timeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById(StartTimeZone);
-                    // StartDate is stored in UTC, convert to the specified timezone
-                    var utcDateTime = DateTime.SpecifyKind(StartDate, DateTimeKind.Utc);
-                    var zonedDateTime = TimeZoneInfo.ConvertTimeFromUtc(utcDateTime, timeZoneInfo);
-                    var offset = timeZoneInfo.GetUtcOffset(zonedDateTime);
-                    return new DateTimeOffset(zonedDateTime, offset);
-                }
-                catch
-                {
-                    // If timezone lookup fails, assume UTC
-                }
+                // No timezone info, return as-is
+                return StartDate;
             }
 
-            // Assume UTC (StartDate is stored as UTC in database)
-            return new DateTimeOffset(StartDate, TimeSpan.Zero);
+            try
+            {
+                var sourceTimeZone = TimeZoneInfo.FindSystemTimeZoneById(StartTimeZone);
+                var localTimeZone = TimeZoneInfo.Local;
+                
+                // Ensure DateTime is Unspecified kind before conversion
+                var unspecifiedDateTime = DateTime.SpecifyKind(StartDate, DateTimeKind.Unspecified);
+                
+                // Convert from source timezone to local timezone
+                return TimeZoneInfo.ConvertTime(unspecifiedDateTime, sourceTimeZone, localTimeZone);
+            }
+            catch
+            {
+                // If timezone lookup fails, return as-is
+                return StartDate;
+            }
         }
     }
 
     /// <summary>
-    /// Gets the end date as a DateTimeOffset with the correct timezone.
-    /// If EndTimeZone is available, uses it to calculate the offset.
-    /// Otherwise, assumes UTC (EndDate is stored as UTC in database).
+    /// Gets the end date converted to user's local timezone for display.
+    /// EndDate is calculated from StartDate and is in StartTimeZone.
     /// </summary>
     [Ignore]
-    public DateTimeOffset EndDateTimeOffset
+    public DateTime LocalEndDate
     {
         get
         {
-            if (!string.IsNullOrEmpty(EndTimeZone))
+            if (string.IsNullOrEmpty(EndTimeZone))
             {
-                try
-                {
-                    var timeZoneInfo = TimeZoneInfo.FindSystemTimeZoneById(EndTimeZone);
-                    // EndDate is stored in UTC, convert to the specified timezone
-                    var utcDateTime = DateTime.SpecifyKind(EndDate, DateTimeKind.Utc);
-                    var zonedDateTime = TimeZoneInfo.ConvertTimeFromUtc(utcDateTime, timeZoneInfo);
-                    var offset = timeZoneInfo.GetUtcOffset(zonedDateTime);
-                    return new DateTimeOffset(zonedDateTime, offset);
-                }
-                catch
-                {
-                    // If timezone lookup fails, assume UTC
-                }
+                // No timezone info, return as-is
+                return EndDate;
             }
 
-            // Assume UTC (EndDate is stored as UTC in database)
-            return new DateTimeOffset(EndDate, TimeSpan.Zero);
+            try
+            {
+                var sourceTimeZone = TimeZoneInfo.FindSystemTimeZoneById(EndTimeZone);
+                var localTimeZone = TimeZoneInfo.Local;
+                
+                // Ensure DateTime is Unspecified kind before conversion
+                var unspecifiedDateTime = DateTime.SpecifyKind(EndDate, DateTimeKind.Unspecified);
+                
+                // Convert from source timezone to local timezone
+                return TimeZoneInfo.ConvertTime(unspecifiedDateTime, sourceTimeZone, localTimeZone);
+            }
+            catch
+            {
+                // If timezone lookup fails, return as-is
+                return EndDate;
+            }
         }
     }
 }

Wino.Core.Domain/Enums/CalendarItemShowAs.cs

@@ -0,0 +1,13 @@
+namespace Wino.Core.Domain.Enums;
+
+/// <summary>
+/// Defines how a calendar item should be displayed in terms of availability.
+/// </summary>
+public enum CalendarItemShowAs
+{
+    Free,
+    Tentative,
+    Busy,
+    OutOfOffice,
+    WorkingElsewhere
+}

Wino.Core.Domain/Interfaces/ICalendarDialogService.cs

@@ -1,5 +0,0 @@
-namespace Wino.Core.Domain.Interfaces;
-
-public interface ICalendarDialogService : IDialogServiceBase
-{
-}

Wino.Core.Domain/Models/Calendar/CalendarOperationPreparationRequest.cs

@@ -11,9 +11,3 @@ namespace Wino.Core.Domain.Models.Calendar;
 /// <param name="CalendarItem">Calendar item to operate on.</param>
 /// <param name="Attendees">List of attendees for the calendar event.</param>
 public record CalendarOperationPreparationRequest(CalendarSynchronizerOperation Operation, CalendarItem CalendarItem, List<CalendarEventAttendee> Attendees);
-//{
-//    public CalendarOperationPreparationRequest(CalendarItem calendarItem) 
-//        : this(calendarItem ?? throw new ArgumentNullException(nameof(calendarItem)), null)
-//    {
-//    }
-//}

Wino.Core.Domain/Translations/en_US/resources.json

@@ -83,6 +83,19 @@
     "CalendarAllDayEventSummary": "all-day events",
     "CalendarDisplayOptions_Color": "Color",
     "CalendarDisplayOptions_Expand": "Expand",
+    "CalendarEventResponse_Accept": "Accept",
+    "CalendarEventResponse_Decline": "Decline",
+    "CalendarEventResponse_Tentative": "Tentative",
+    "CalendarEventDetails_Attachments": "Attachments",
+    "CalendarEventDetails_Details": "Details",
+    "CalendarEventDetails_EditSeries": "Edit Series",
+    "CalendarEventDetails_Editing": "Editing",
+    "CalendarEventDetails_InviteSomeone": "Invite someone",
+    "CalendarEventDetails_JoinOnline": "Join Online",
+    "CalendarEventDetails_People": "People",
+    "CalendarEventDetails_ReadOnlyEvent": "Read-only event",
+    "CalendarEventDetails_Reminder": "Reminder",
+    "CalendarEventDetails_ShowAs": "Show as",
     "CalendarItem_DetailsPopup_JoinOnline": "Join online",
     "CalendarItem_DetailsPopup_ViewEventButton": "View event",
     "CalendarItem_DetailsPopup_ViewSeriesButton": "View series",
@@ -133,6 +146,8 @@
     "DialogMessage_CreateLinkedAccountTitle": "Account Link Name",
     "DialogMessage_DeleteAccountConfirmationMessage": "Delete {0}?",
     "DialogMessage_DeleteAccountConfirmationTitle": "All data associated with this account will be deleted from disk permanently.",
+    "DialogMessage_DeleteRecurringSeriesMessage": "This will delete all events in the series. Do you want to continue?",
+    "DialogMessage_DeleteRecurringSeriesTitle": "Delete Recurring Series",
     "DialogMessage_DiscardDraftConfirmationMessage": "This draft will be discarded. Do you want to continue?",
     "DialogMessage_DiscardDraftConfirmationTitle": "Discard Draft",
     "DialogMessage_EmptySubjectConfirmation": "Missing Subject",