backend/UniVerse.Api.Tests/Sync/ScheduleSyncServiceTests.cs

@@ -0,0 +1,133 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging.Abstractions;
+using NSubstitute;
+using UniVerse.Application.DTOs.Sync;
+using UniVerse.Application.Interfaces;
+using UniVerse.Infrastructure.Data;
+using UniVerse.Infrastructure.Services;
+using Xunit;
+
+namespace UniVerse.Api.Tests.Sync;
+
+public class ScheduleSyncServiceTests
+{
+    [Fact]
+    public async Task SyncScheduleAsync_UsesRoomWorkingCapacityForLectureSeats()
+    {
+        await using var db = CreateDbContext();
+        var modeus = Substitute.For<IModeusApiClient>();
+        modeus.SearchEventsAsync(Arg.Any<SyncScheduleRequest>())
+            .Returns(new ModeusEventsResponse
+            {
+                Embedded = new ModeusEventsEmbedded
+                {
+                    Events =
+                    [
+                        new ModeusEvent
+                        {
+                            Id = "event-1",
+                            Name = "Open lecture",
+                            StartsAt = new DateTime(2026, 5, 13, 9, 0, 0, DateTimeKind.Utc),
+                            EndsAt = new DateTime(2026, 5, 13, 10, 30, 0, DateTimeKind.Utc)
+                        }
+                    ],
+                    EventRooms =
+                    [
+                        new ModeusEventRoom
+                        {
+                            Links = new ModeusEventRoomLinks
+                            {
+                                Event = new ModeusHrefLink("/events/event-1"),
+                                Room = new ModeusHrefLink("/rooms/room-1")
+                            }
+                        }
+                    ],
+                    Rooms =
+                    [
+                        new ModeusRoom("room-1", "Room 101", "101", null, TotalCapacity: 60, WorkingCapacity: 42)
+                    ],
+                    EventTeams =
+                    [
+                        new ModeusEventTeam("event-1", 15)
+                    ]
+                }
+            });
+
+        var service = new ScheduleSyncService(db, modeus, NullLogger<ScheduleSyncService>.Instance);
+
+        var result = await service.SyncScheduleAsync(new SyncScheduleRequest(null, null, null, null));
+
+        var lecture = await db.Lectures.SingleAsync();
+        Assert.Null(result.Error);
+        Assert.Equal(1, result.Created);
+        Assert.Equal(42, lecture.MaxEnrollments);
+    }
+
+    [Fact]
+    public async Task SyncScheduleAsync_LoadsRoomCapacityWhenEventRoomHasNoCapacity()
+    {
+        await using var db = CreateDbContext();
+        var modeus = Substitute.For<IModeusApiClient>();
+        modeus.SearchEventsAsync(Arg.Any<SyncScheduleRequest>())
+            .Returns(new ModeusEventsResponse
+            {
+                Embedded = new ModeusEventsEmbedded
+                {
+                    Events =
+                    [
+                        new ModeusEvent
+                        {
+                            Id = "event-1",
+                            Name = "Open lecture",
+                            StartsAt = new DateTime(2026, 5, 13, 9, 0, 0, DateTimeKind.Utc),
+                            EndsAt = new DateTime(2026, 5, 13, 10, 30, 0, DateTimeKind.Utc)
+                        }
+                    ],
+                    EventRooms =
+                    [
+                        new ModeusEventRoom
+                        {
+                            Links = new ModeusEventRoomLinks
+                            {
+                                Event = new ModeusHrefLink("/events/event-1"),
+                                Room = new ModeusHrefLink("/rooms/room-1")
+                            }
+                        }
+                    ],
+                    Rooms =
+                    [
+                        new ModeusRoom("room-1", "Room 101", "101", null, TotalCapacity: null, WorkingCapacity: null)
+                    ],
+                    EventTeams =
+                    [
+                        new ModeusEventTeam("event-1", 15)
+                    ]
+                }
+            });
+        modeus.SearchRoomsAsync()
+            .Returns(new ModeusRoomsResponse
+            {
+                Rooms =
+                [
+                    new ModeusRoom("room-1", "Room 101", "101", null, TotalCapacity: 60, WorkingCapacity: 48)
+                ]
+            });
+
+        var service = new ScheduleSyncService(db, modeus, NullLogger<ScheduleSyncService>.Instance);
+
+        var result = await service.SyncScheduleAsync(new SyncScheduleRequest(null, null, null, null));
+
+        var lecture = await db.Lectures.SingleAsync();
+        Assert.Null(result.Error);
+        Assert.Equal(1, result.Created);
+        Assert.Equal(48, lecture.MaxEnrollments);
+    }
+
+    private static AppDbContext CreateDbContext()
+    {
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseInMemoryDatabase($"ScheduleSyncTests_{Guid.NewGuid()}")
+            .Options;
+        return new AppDbContext(options);
+    }
+}

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?
+                var roomId = GetEventRoomId(events, ev.Id);
-                    .FirstOrDefault(team => team.EventId == ev.Id)?.Size ?? 0;
+                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?
+        var roomId = GetEventRoomId(events, eventId);
-            .Select(eventRoom => new
-            {
-                EventId = GetHrefId(eventRoom.Links?.Event?.Href),
-                RoomId = GetHrefId(eventRoom.Links?.Room?.Href)
-            })
-            .FirstOrDefault(link => link.EventId == eventId)
-            ?.RoomId;
 
         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,

frontend/src/api/mappers.ts

@@ -76,6 +76,7 @@ export function mapApiLecture(lecture: LectureDto): Lecture {
     room: lecture.format === 'Online' ? undefined : locationName,
     format: lecture.format === 'Online' ? 'online' : 'offline',
     totalSeats,
+    enrolledSeats: enrolled,
     freeSeats,
     registrationClosed: !lecture.isOpen,
     tags: lecture.courseName ? [`#${lecture.courseName}`] : [],

frontend/src/assets/main.css

@@ -217,7 +217,7 @@ input, textarea, select {
   font-weight: 600;
   white-space: nowrap;
 }
-.badge-green { background: rgba(34,197,94,0.15); color: #15803D; border: 1px solid rgba(34,197,94,0.3); }
+.badge-green {  color: #15803D; border: 1.5px solid rgba(34,197,94,0.3); }
 .badge-blue { background: rgba(6,182,212,0.15); color: #0E7490; border: 1px solid rgba(6,182,212,0.3); }
 .badge-orange { background: rgba(251,146,60,0.15); color: #C2410C; border: 1px solid rgba(251,146,60,0.3); }
 .badge-gray { background: rgba(100,116,139,0.1); color: #64748B; border: 1px solid rgba(100,116,139,0.2); }

frontend/src/components/ui/LectureCard.vue

@@ -42,7 +42,7 @@ function goDetail() {
       >
         <template v-if="lecture.registrationClosed">Запись закрыта</template>
         <template v-else>
-          {{ lecture.freeSeats === 0 ? 'Мест нет' : `${lecture.freeSeats}/${lecture.totalSeats} мест` }}
+          {{ `${lecture.enrolledSeats}/${lecture.totalSeats} записано` }}
         </template>
       </span>
     </div>

frontend/src/stores/lectures.ts

@@ -78,6 +78,7 @@ export const useLecturesStore = defineStore('lectures', () => {
     await lecturesApi.enroll(lectureId)
     registered.value.push(lectureId)
     lecture.freeSeats = Math.max(lecture.freeSeats - 1, 0)
+    lecture.enrolledSeats += 1
     lecture.registered = true
   }
 
@@ -87,6 +88,7 @@ export const useLecturesStore = defineStore('lectures', () => {
     const lecture = lectures.value.find(item => item.id === lectureId)
     if (lecture) {
       lecture.freeSeats = Math.min(lecture.freeSeats + 1, lecture.totalSeats)
+      lecture.enrolledSeats = Math.max(lecture.enrolledSeats - 1, 0)
       lecture.registered = false
     }
   }

frontend/src/types/index.ts

@@ -34,6 +34,7 @@ export interface Lecture {
   room?: string
   format: 'online' | 'offline'
   totalSeats: number
+  enrolledSeats: number
   freeSeats: number
   registrationClosed?: boolean
   tags: string[]

frontend/src/views/student/CatalogView.vue

@@ -225,7 +225,7 @@ async function registerLecture(id: string) {
           </template>
           <template #seats="{ row }">
             <span :class="row.freeSeats === 0 ? 'badge badge-gray' : 'badge badge-green'">
-              {{ row.registrationClosed ? 'Запись закрыта' : `${row.freeSeats}/${row.totalSeats}` }}
+              {{ row.registrationClosed ? 'Запись закрыта' : `${row.enrolledSeats}/${row.totalSeats}` }}
             </span>
           </template>
           <template #action="{ row }">

frontend/src/views/student/LectureDetailView.vue

@@ -74,7 +74,7 @@ onMounted(async () => {
         </div>
         <div class="info-section">
           <h3>Места</h3>
-          <div class="info-value">Свободно {{ lecture.freeSeats }} из {{ lecture.totalSeats }}</div>
+          <div class="info-value">Записано {{ lecture.enrolledSeats }} из {{ lecture.totalSeats }}</div>
           <StatusBadge :status="lecture.registrationClosed ? 'closed' : lecture.freeSeats === 0 ? 'full' : 'open'" />
         </div>
         <div class="info-section">

frontend/src/views/teacher/TeacherDashboardView.vue

@@ -17,7 +17,7 @@ const teacherLectures = computed(() => {
   return owned.length ? owned : lecturesStore.all
 })
 const upcoming = computed(() => teacherLectures.value.filter(l => l.status !== 'completed').slice(0, 3))
-const enrolledTotal = computed(() => teacherLectures.value.reduce((sum, l) => sum + (l.totalSeats - l.freeSeats), 0))
+const enrolledTotal = computed(() => teacherLectures.value.reduce((sum, l) => sum + l.enrolledSeats, 0))
 const visibility = computed(() => (teacherLectures.value.length ? Math.min(100, Math.round(enrolledTotal.value * 4)) : 0))
 
 onMounted(() => {
@@ -60,7 +60,7 @@ onMounted(() => {
           <div>
             <div class="upcoming-title">{{ l.title }}</div>
             <div class="upcoming-meta">📅 {{ new Date(l.date).toLocaleDateString('ru-RU') }} · {{ l.time }}</div>
-            <div class="upcoming-meta">Записалось {{ l.totalSeats - l.freeSeats }} студентов</div>
+            <div class="upcoming-meta">Записалось {{ l.enrolledSeats }} студентов</div>
           </div>
           <button class="btn-secondary btn-sm" @click="router.push('/teacher/lectures')">Управлять</button>
         </div>

frontend/src/views/teacher/TeacherLecturesView.vue

@@ -24,7 +24,7 @@ const rows = computed(() => {
     title: l.title,
     date: `${new Date(l.date).toLocaleDateString('ru-RU')} · ${l.time}`,
     status: l.status ?? 'upcoming',
-    stats: `${l.totalSeats - l.freeSeats} / — / ${l.reviewCount}`,
+    stats: `${l.enrolledSeats} / — / ${l.reviewCount}`,
   }))
 })