feat: переделал все клиентские запросы на другие endpoint для безопастности

backend/UniVerse.Infrastructure/Services/UserService.cs

@@ -1,5 +1,6 @@
 using Microsoft.EntityFrameworkCore;
 using UniVerse.Application.DTOs.Common;
+using UniVerse.Application.DTOs.Lectures;
 using UniVerse.Application.DTOs.Users;
 using UniVerse.Application.Interfaces;
 using UniVerse.Application.Mappings;
@@ -65,6 +66,36 @@ public class UserService : IUserService
         );
     }
 
+    public async Task<PagedResult<LectureDto>> GetEnrollmentsAsync(int id, PaginationRequest pagination)
+    {
+        if (!await _db.Users.AnyAsync(u => u.Id == id))
+            throw new NotFoundException("User", id);
+
+        var query = _db.LectureEnrollments
+            .Where(e => e.UserId == id)
+            .Include(e => e.Lecture)
+            .ThenInclude(l => l.Course)
+            .Include(e => e.Lecture)
+            .ThenInclude(l => l.Teacher)
+            .Include(e => e.Lecture)
+            .ThenInclude(l => l.Location)
+            .Include(e => e.Lecture)
+            .ThenInclude(l => l.Enrollments);
+
+        var total = await query.CountAsync();
+        var enrollments = await query
+            .OrderBy(e => e.Lecture.StartsAt)
+            .Skip((pagination.Page - 1) * pagination.PageSize)
+            .Take(pagination.PageSize)
+            .ToListAsync();
+
+        return PagedResult<LectureDto>.Create(
+            enrollments.Select(e => e.Lecture.ToDto(isEnrolled: true)).ToList(),
+            total,
+            pagination.Page,
+            pagination.PageSize);
+    }
+
     public async Task<PagedResult<UserDto>> GetAllAsync(UserFilterRequest filter)
     {
         var query = _db.Users.AsQueryable();