fix: отображение количества участников лекции

backend/UniVerse.Infrastructure/Services/ScheduleSyncService.cs

@@ -27,6 +27,9 @@ public class ScheduleSyncService : IScheduleSyncService
         try
         {
             var events = await _modeus.SearchEventsAsync(request);
+            var embeddedRoomCapacityById = BuildRoomCapacityLookup(events.Embedded?.Rooms);
+            IReadOnlyDictionary<string, int>? syncedRoomCapacityById = null;
+
             foreach (var ev in events.EventItems)
             {
                 if (string.IsNullOrWhiteSpace(ev.Id) || string.IsNullOrWhiteSpace(ev.Name))
@@ -41,8 +44,15 @@ public class ScheduleSyncService : IScheduleSyncService
                 var courseExternalId = courseUnit?.Id ?? ev.TypeId ?? ev.Id;
                 var courseName = courseUnit?.Name ?? ev.Name;
                 var location = await UpsertEventLocationAsync(events, ev.Id);
-                var maxEnrollments = events.Embedded?.EventTeams?
-                    .FirstOrDefault(team => team.EventId == ev.Id)?.Size ?? 0;
+                var roomId = GetEventRoomId(events, ev.Id);
+                var maxEnrollments = GetRoomCapacity(embeddedRoomCapacityById, roomId);
+                if (maxEnrollments is null && !string.IsNullOrWhiteSpace(roomId))
+                {
+                    syncedRoomCapacityById ??= await LoadRoomCapacityLookupAsync();
+                    maxEnrollments = GetRoomCapacity(syncedRoomCapacityById, roomId);
+                }
+
+                var lectureCapacity = maxEnrollments ?? GetEventTeamSize(events, ev.Id) ?? 0;
                 var startsAt = EnsureUtc(ev.StartsAt);
                 var endsAt = EnsureUtc(ev.EndsAt);
 
@@ -54,7 +64,7 @@ public class ScheduleSyncService : IScheduleSyncService
                     existing.StartsAt = startsAt;
                     existing.EndsAt = endsAt;
                     existing.LocationId = location?.Id;
-                    existing.MaxEnrollments = maxEnrollments;
+                    existing.MaxEnrollments = lectureCapacity;
                     existing.UpdatedAt = DateTime.UtcNow;
                     updated++;
                 }
@@ -77,7 +87,7 @@ public class ScheduleSyncService : IScheduleSyncService
                         ExternalId = ev.Id,
                         StartsAt = startsAt,
                         EndsAt = endsAt,
-                        MaxEnrollments = maxEnrollments
+                        MaxEnrollments = lectureCapacity
                     });
                     created++;
                 }
@@ -182,14 +192,7 @@ public class ScheduleSyncService : IScheduleSyncService
 
     private async Task<Location?> UpsertEventLocationAsync(ModeusEventsResponse events, string eventId)
     {
-        var roomId = events.Embedded?.EventRooms?
-            .Select(eventRoom => new
-            {
-                EventId = GetHrefId(eventRoom.Links?.Event?.Href),
-                RoomId = GetHrefId(eventRoom.Links?.Room?.Href)
-            })
-            .FirstOrDefault(link => link.EventId == eventId)
-            ?.RoomId;
+        var roomId = GetEventRoomId(events, eventId);
 
         if (string.IsNullOrWhiteSpace(roomId))
             return null;
@@ -222,6 +225,55 @@ public class ScheduleSyncService : IScheduleSyncService
         return location;
     }
 
+    private static string? GetEventRoomId(ModeusEventsResponse events, string eventId) =>
+        events.Embedded?.EventRooms?
+            .Select(eventRoom => new
+            {
+                EventId = GetHrefId(eventRoom.Links?.Event?.Href),
+                RoomId = GetHrefId(eventRoom.Links?.Room?.Href)
+            })
+            .FirstOrDefault(link => link.EventId == eventId)
+            ?.RoomId;
+
+    private async Task<IReadOnlyDictionary<string, int>> LoadRoomCapacityLookupAsync()
+    {
+        try
+        {
+            var rooms = await _modeus.SearchRoomsAsync();
+            return BuildRoomCapacityLookup(rooms.RoomItems);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Could not load room capacities from Modeus rooms search.");
+            return new Dictionary<string, int>();
+        }
+    }
+
+    private static IReadOnlyDictionary<string, int> BuildRoomCapacityLookup(IEnumerable<ModeusRoom>? rooms)
+    {
+        var result = new Dictionary<string, int>();
+        foreach (var room in rooms ?? [])
+        {
+            var capacity = NormalizeCapacity(room.WorkingCapacity) ?? NormalizeCapacity(room.TotalCapacity);
+            if (!string.IsNullOrWhiteSpace(room.Id) && capacity.HasValue)
+                result.TryAdd(room.Id, capacity.Value);
+        }
+
+        return result;
+    }
+
+    private static int? GetRoomCapacity(IReadOnlyDictionary<string, int> roomCapacityById, string? roomId) =>
+        !string.IsNullOrWhiteSpace(roomId) && roomCapacityById.TryGetValue(roomId, out var capacity)
+            ? capacity
+            : null;
+
+    private static int? GetEventTeamSize(ModeusEventsResponse events, string eventId) =>
+        NormalizeCapacity(events.Embedded?.EventTeams?
+            .FirstOrDefault(team => team.EventId == eventId)?.Size);
+
+    private static int? NormalizeCapacity(int? capacity) =>
+        capacity is > 0 ? capacity : null;
+
     private static IReadOnlyList<string> BuildErrorDetails(
         Exception exception,
         string stage,