feat: подтянул занятость из Modeus

backend/UniVerse.Application/Mappings/MappingExtensions.cs

@@ -13,6 +13,9 @@ namespace UniVerse.Application.Mappings;
 
 public static class MappingExtensions
 {
+    private static int OccupiedSeatsCount(this Lecture lecture) =>
+        Math.Max(0, lecture.MandatoryAttendeesCount) + lecture.Enrollments.Count;
+
     // --- User ---
     public static UserDto ToDto(this User user, int level) => new(
         user.Id, user.Email, user.DisplayName, user.AvatarUrl,
@@ -57,7 +60,7 @@ public static class MappingExtensions
         lecture.LocationId, lecture.Location?.Name,
         lecture.Title, lecture.Description, lecture.Format,
         lecture.StartsAt, lecture.EndsAt, lecture.IsOpen,
-        lecture.MaxEnrollments, lecture.Enrollments.Count,
+        lecture.MaxEnrollments, lecture.OccupiedSeatsCount(),
         lecture.OnlineUrl, lecture.CreatedAt, isEnrolled
     );
 
@@ -67,7 +70,7 @@ public static class MappingExtensions
         lecture.LocationId, lecture.Location?.Name,
         lecture.Title, lecture.Description, lecture.Format,
         lecture.StartsAt, lecture.EndsAt, lecture.IsOpen,
-        lecture.MaxEnrollments, lecture.Enrollments.Count,
+        lecture.MaxEnrollments, lecture.OccupiedSeatsCount(),
         lecture.OnlineUrl, lecture.CreatedAt, isEnrolled
     );