Initial feature for drag / drop calendar events.

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

@@ -154,6 +154,24 @@ public class CalendarItem : ICalendarItem
     [Ignore]
     public IAccountCalendar AssignedCalendar { get; set; }
 
+    [Ignore]
+    public bool CanChangeStartAndEndDate
+    {
+        get
+        {
+            if (IsLocked)
+            {
+                return false;
+            }
+
+            var accountAddress = AssignedCalendar?.MailAccount?.Address;
+
+            return string.IsNullOrWhiteSpace(OrganizerEmail) ||
+                   string.IsNullOrWhiteSpace(accountAddress) ||
+                   string.Equals(OrganizerEmail, accountAddress, StringComparison.OrdinalIgnoreCase);
+        }
+    }
+
     /// <summary>
     /// Id to load information related to this event (attendees, reminders, etc.).
     /// For child events, if they have their own data, use their own Id.

Wino.Core.Domain/Enums/MailOperation.cs

@@ -28,6 +28,7 @@ public enum CalendarSynchronizerOperation
 {
     CreateEvent,
     UpdateEvent,
+    ChangeStartAndEndDate,
     DeleteEvent,
     AcceptEvent,
     DeclineEvent,

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

@@ -7,7 +7,7 @@ namespace Wino.Core.Domain.Models.Calendar;
 /// <summary>
 /// Encapsulates the options for preparing calendar operation requests.
 /// </summary>
-/// <param name="Operation">Calendar operation to execute (Create, Update, Delete, Accept, Decline, Tentative).</param>
+/// <param name="Operation">Calendar operation to execute (Create, Update, ChangeStartAndEndDate, Delete, Accept, Decline, Tentative).</param>
 /// <param name="CalendarItem">Calendar item to operate on.</param>
 /// <param name="Attendees">List of attendees for the calendar event.</param>
 /// <param name="ResponseMessage">Optional message to include with event responses (Accept, Decline, Tentative).</param>

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

@@ -210,6 +210,8 @@
     "CalendarItem_DetailsPopup_JoinOnline": "Join online",
     "CalendarItem_DetailsPopup_ViewEventButton": "View event",
     "CalendarItem_DetailsPopup_ViewSeriesButton": "View series",
+    "CalendarDragDropMoveNotAllowedMessage": "Only events you own and can edit can be moved.",
+    "CalendarDragDropMoveNotAllowedTitle": "This event can't be moved",
     "CalendarItemAllDay": "all day",
     "CategoriesFolderNameOverride": "Categories",
     "Center": "Center",