feat: добавил каталог достижений и автоначисление

Реализовал автосоздание и обновление каталога достижений на бэке и синхронизацию на фронте.

backend/UniVerse.Api.Tests/Gamification/GamificationServiceTests.cs

@@ -0,0 +1,136 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging.Abstractions;
+using UniVerse.Domain.Entities;
+using UniVerse.Domain.Enums;
+using UniVerse.Infrastructure.Data;
+using UniVerse.Infrastructure.Services;
+using Xunit;
+
+namespace UniVerse.Api.Tests.Gamification;
+
+public class GamificationServiceTests
+{
+    [Fact]
+    public async Task CheckAndAwardAchievementsAsync_AwardsModernConditionsOnce()
+    {
+        await using var db = CreateDbContext();
+        var service = CreateService(db);
+
+        db.Users.Add(new User
+        {
+            Id = 1,
+            Email = "student@test.local",
+            DisplayName = "Student",
+            AvatarUrl = "avatar.png",
+            Xp = 100,
+            Coins = 510
+        });
+        db.Courses.Add(new Course { Id = 1, Name = "Course" });
+        db.Lectures.Add(new Lecture
+        {
+            Id = 1,
+            CourseId = 1,
+            Title = "Future lecture",
+            StartsAt = DateTime.UtcNow.AddDays(1),
+            EndsAt = DateTime.UtcNow.AddDays(1).AddHours(2),
+            IsOpen = true
+        });
+        db.LectureEnrollments.Add(new LectureEnrollment { UserId = 1, LectureId = 1 });
+        db.Reviews.AddRange(
+            new Review { Id = 1, UserId = 1, LectureId = 1, Rating = ReviewRating.Like },
+            new Review { Id = 2, UserId = 1, LectureId = 1, Rating = ReviewRating.Neutral },
+            new Review { Id = 3, UserId = 1, LectureId = 1, Rating = ReviewRating.Dislike });
+        db.CoinTransactions.Add(new CoinTransaction
+        {
+            UserId = 1,
+            Amount = 510,
+            Type = CoinTransactionType.AdminAdjustment,
+            Description = "Initial coins"
+        });
+        db.Achievements.AddRange(
+            Achievement(1001, "First activity", "first_activity:1", 10),
+            Achievement(1002, "Reviews", "reviews_written:3", 20),
+            Achievement(1003, "Active registrations", "active_registrations:1", 30),
+            Achievement(1004, "Coins earned", "coins_earned:500", 40),
+            Achievement(1005, "Level reached", "level_reached:2", 50),
+            Achievement(1006, "Profile completed", "profile_completed:1", 60),
+            Achievement(1007, "Old condition", "reviews_1", 100));
+        await db.SaveChangesAsync();
+
+        await service.CheckAndAwardAchievementsAsync(1);
+        await service.CheckAndAwardAchievementsAsync(1);
+
+        var user = await db.Users.FindAsync(1);
+        Assert.NotNull(user);
+        Assert.Equal(720, user!.Coins);
+        Assert.Equal(310, user.Xp);
+        Assert.Equal(6, await db.UserAchievements.CountAsync(ua => ua.UserId == 1));
+        Assert.False(await db.UserAchievements.AnyAsync(ua => ua.AchievementId == 1007));
+        Assert.Equal(6, await db.CoinTransactions.CountAsync(ct =>
+            ct.UserId == 1 && ct.Type == CoinTransactionType.AchievementReward));
+    }
+
+    [Fact]
+    public async Task CheckAndAwardAchievementsAsync_CountsConsecutiveIsoWeeksAcrossYears()
+    {
+        await using var db = CreateDbContext();
+        var service = CreateService(db);
+
+        db.Users.Add(new User { Id = 1, Email = "student@test.local" });
+        db.Courses.Add(new Course { Id = 1, Name = "Course" });
+        db.Lectures.AddRange(
+            Lecture(1, new DateTime(2025, 12, 29, 10, 0, 0, DateTimeKind.Utc)),
+            Lecture(2, new DateTime(2026, 1, 5, 10, 0, 0, DateTimeKind.Utc)),
+            Lecture(3, new DateTime(2026, 1, 12, 10, 0, 0, DateTimeKind.Utc)));
+        db.LectureEnrollments.AddRange(
+            new LectureEnrollment { UserId = 1, LectureId = 1, Attended = true },
+            new LectureEnrollment { UserId = 1, LectureId = 2, Attended = true },
+            new LectureEnrollment { UserId = 1, LectureId = 3, Attended = true });
+        db.Achievements.Add(Achievement(1001, "Streak", "attendance_streak_weeks:3", 10));
+        await db.SaveChangesAsync();
+
+        await service.CheckAndAwardAchievementsAsync(1);
+
+        Assert.True(await db.UserAchievements.AnyAsync(ua => ua.UserId == 1 && ua.AchievementId == 1001));
+    }
+
+    private static AppDbContext CreateDbContext()
+    {
+        var options = new DbContextOptionsBuilder<AppDbContext>()
+            .UseInMemoryDatabase($"GamificationTests_{Guid.NewGuid()}")
+            .Options;
+        return new AppDbContext(options);
+    }
+
+    private static GamificationService CreateService(AppDbContext db)
+    {
+        var configuration = new ConfigurationBuilder()
+            .AddInMemoryCollection(new Dictionary<string, string?>
+            {
+                ["Gamification:XpThresholds:0"] = "0",
+                ["Gamification:XpThresholds:1"] = "100",
+                ["Gamification:XpThresholds:2"] = "300"
+            })
+            .Build();
+
+        return new GamificationService(db, configuration, NullLogger<GamificationService>.Instance);
+    }
+
+    private static Achievement Achievement(int id, string name, string condition, int coinReward) => new()
+    {
+        Id = id,
+        Name = name,
+        Condition = condition,
+        CoinReward = coinReward
+    };
+
+    private static Lecture Lecture(int id, DateTime startsAt) => new()
+    {
+        Id = id,
+        CourseId = 1,
+        Title = $"Lecture {id}",
+        StartsAt = startsAt,
+        EndsAt = startsAt.AddHours(2)
+    };
+}

backend/UniVerse.Api/BackgroundServices/AchievementCatalogHostedService.cs

@@ -0,0 +1,17 @@
+using UniVerse.Infrastructure.Data;
+
+namespace UniVerse.Api.BackgroundServices;
+
+public class AchievementCatalogHostedService : IHostedService
+{
+    private readonly IServiceProvider _services;
+
+    public AchievementCatalogHostedService(IServiceProvider services) => _services = services;
+
+    public async Task StartAsync(CancellationToken cancellationToken)
+    {
+        await AchievementCatalogSeeder.SeedAsync(_services, cancellationToken);
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+}

backend/UniVerse.Api/Program.cs

@@ -118,6 +118,7 @@ builder.Services.AddHttpClient<IModeusApiClient, ModeusApiClient>(client =>
 
 // --- Background Services ---
 builder.Services.AddHostedService<LlmProcessingBackgroundService>();
+builder.Services.AddHostedService<AchievementCatalogHostedService>();
 
 // --- Controllers ---
 builder.Services.AddControllers()

backend/UniVerse.Infrastructure/Data/AchievementCatalogSeeder.cs

@@ -0,0 +1,92 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using UniVerse.Domain.Entities;
+
+namespace UniVerse.Infrastructure.Data;
+
+public static class AchievementCatalogSeeder
+{
+    private static readonly IReadOnlyList<AchievementSeed> Catalog =
+    [
+        new(1001, "Добро пожаловать в UniVerse", "Совершить первое действие: записаться на лекцию, оставить отзыв или посетить занятие.", "sparkles", 10, "first_activity:1"),
+        new(1002, "Первый шаг", "Посетить первую открытую лекцию.", "book-2", 10, "lectures_attended:1"),
+        new(1003, "Вошел во вкус", "Посетить 3 открытые лекции.", "books", 20, "lectures_attended:3"),
+        new(1004, "Постоянный слушатель", "Посетить 5 открытых лекций.", "calendar-event", 35, "lectures_attended:5"),
+        new(1005, "Академический марафон", "Посетить 10 открытых лекций.", "stopwatch", 60, "lectures_attended:10"),
+        new(1006, "Грандмастер лекций", "Посетить 25 открытых лекций.", "trophy", 120, "lectures_attended:25"),
+        new(1007, "Первый отзыв", "Оставить первый отзыв о посещенной лекции.", "message-circle", 10, "reviews_written:1"),
+        new(1008, "Голос аудитории", "Оставить 3 отзыва о лекциях.", "thumb-up", 25, "reviews_written:3"),
+        new(1009, "Рецензент", "Оставить 10 отзывов о лекциях.", "clipboard-list", 70, "reviews_written:10"),
+        new(1010, "Голос перемен", "Оставить 25 отзывов о лекциях.", "chart-line", 150, "reviews_written:25"),
+        new(1011, "Смелый выбор", "Записаться на первую открытую лекцию.", "calendar", 5, "lectures_registered:1"),
+        new(1012, "План на неделю", "Иметь 3 активные записи на будущие лекции.", "calendar-event", 15, "active_registrations:3"),
+        new(1013, "Полный календарь", "Иметь 5 активных записей на будущие лекции.", "alarm", 30, "active_registrations:5"),
+        new(1014, "Серия интереса", "Посещать открытые лекции 3 недели подряд.", "star", 50, "attendance_streak_weeks:3"),
+        new(1015, "Учебный месяц", "Посещать открытые лекции 4 недели подряд.", "sparkles", 80, "attendance_streak_weeks:4"),
+        new(1016, "Без пропусков", "Посетить 5 лекций, на которые была оформлена запись.", "circle-check", 40, "attended_registered:5"),
+        new(1017, "Надежный участник", "Посетить 10 лекций, на которые была оформлена запись.", "shield", 75, "attended_registered:10"),
+        new(1018, "Капитал знаний", "Получить 500 монет за активность на платформе.", "coin", 80, "coins_earned:500"),
+        new(1019, "Новый уровень", "Достигнуть 2 уровня.", "star", 25, "level_reached:2"),
+        new(1020, "Уверенный рост", "Достигнуть 5 уровня.", "chart-bar", 100, "level_reached:5"),
+        new(1021, "Профиль заполнен", "Заполнить имя и аватар в профиле.", "user", 10, "profile_completed:1")
+    ];
+
+    private static readonly IReadOnlyDictionary<string, string> LegacyConditions = new Dictionary<string, string>
+    {
+        ["reviews_1"] = "reviews_written:1",
+        ["reviews_5"] = "reviews_written:5",
+        ["reviews_10"] = "reviews_written:10",
+        ["attended_5"] = "lectures_attended:5",
+        ["attended_10"] = "lectures_attended:10"
+    };
+
+    public static async Task SeedAsync(IServiceProvider services, CancellationToken cancellationToken = default)
+    {
+        using var scope = services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<AppDbContext>();
+        var legacyConditionKeys = LegacyConditions.Keys.ToArray();
+
+        var legacyAchievements = await db.Achievements
+            .Where(a => a.Condition != null && legacyConditionKeys.Contains(a.Condition))
+            .ToListAsync(cancellationToken);
+
+        foreach (var achievement in legacyAchievements)
+            achievement.Condition = LegacyConditions[achievement.Condition!];
+
+        foreach (var seed in Catalog)
+        {
+            var achievement = await db.Achievements.FindAsync([seed.Id], cancellationToken);
+            if (achievement == null)
+            {
+                db.Achievements.Add(new Achievement
+                {
+                    Id = seed.Id,
+                    Name = seed.Name,
+                    Description = seed.Description,
+                    IconUrl = seed.IconUrl,
+                    XpReward = 0,
+                    CoinReward = seed.CoinReward,
+                    Condition = seed.Condition
+                });
+                continue;
+            }
+
+            achievement.Name = seed.Name;
+            achievement.Description = seed.Description;
+            achievement.IconUrl = seed.IconUrl;
+            achievement.XpReward = 0;
+            achievement.CoinReward = seed.CoinReward;
+            achievement.Condition = seed.Condition;
+        }
+
+        await db.SaveChangesAsync(cancellationToken);
+    }
+
+    private sealed record AchievementSeed(
+        int Id,
+        string Name,
+        string Description,
+        string IconUrl,
+        int CoinReward,
+        string Condition);
+}

backend/UniVerse.Infrastructure/Migrations/20260512120000_SeedAchievements.cs

@@ -0,0 +1,70 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using UniVerse.Infrastructure.Data;
+
+#nullable disable
+
+namespace UniVerse.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    [DbContext(typeof(AppDbContext))]
+    [Migration("20260512120000_SeedAchievements")]
+    public partial class SeedAchievements : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql("""
+                UPDATE achievements
+                SET condition = CASE condition
+                    WHEN 'reviews_1' THEN 'reviews_written:1'
+                    WHEN 'reviews_5' THEN 'reviews_written:5'
+                    WHEN 'reviews_10' THEN 'reviews_written:10'
+                    WHEN 'attended_5' THEN 'lectures_attended:5'
+                    WHEN 'attended_10' THEN 'lectures_attended:10'
+                    ELSE condition
+                END
+                WHERE condition IN ('reviews_1', 'reviews_5', 'reviews_10', 'attended_5', 'attended_10');
+                """);
+
+            migrationBuilder.Sql("""
+                INSERT INTO achievements (id, name, description, icon_url, xp_reward, coin_reward, condition, created_at)
+                VALUES
+                    (1001, 'Добро пожаловать в UniVerse', 'Совершить первое действие: записаться на лекцию, оставить отзыв или посетить занятие.', 'sparkles', 0, 10, 'first_activity:1', NOW()),
+                    (1002, 'Первый шаг', 'Посетить первую открытую лекцию.', 'book-2', 0, 10, 'lectures_attended:1', NOW()),
+                    (1003, 'Вошел во вкус', 'Посетить 3 открытые лекции.', 'books', 0, 20, 'lectures_attended:3', NOW()),
+                    (1004, 'Постоянный слушатель', 'Посетить 5 открытых лекций.', 'calendar-event', 0, 35, 'lectures_attended:5', NOW()),
+                    (1005, 'Академический марафон', 'Посетить 10 открытых лекций.', 'stopwatch', 0, 60, 'lectures_attended:10', NOW()),
+                    (1006, 'Грандмастер лекций', 'Посетить 25 открытых лекций.', 'trophy', 0, 120, 'lectures_attended:25', NOW()),
+                    (1007, 'Первый отзыв', 'Оставить первый отзыв о посещенной лекции.', 'message-circle', 0, 10, 'reviews_written:1', NOW()),
+                    (1008, 'Голос аудитории', 'Оставить 3 отзыва о лекциях.', 'thumb-up', 0, 25, 'reviews_written:3', NOW()),
+                    (1009, 'Рецензент', 'Оставить 10 отзывов о лекциях.', 'clipboard-list', 0, 70, 'reviews_written:10', NOW()),
+                    (1010, 'Голос перемен', 'Оставить 25 отзывов о лекциях.', 'chart-line', 0, 150, 'reviews_written:25', NOW()),
+                    (1011, 'Смелый выбор', 'Записаться на первую открытую лекцию.', 'calendar', 0, 5, 'lectures_registered:1', NOW()),
+                    (1012, 'План на неделю', 'Иметь 3 активные записи на будущие лекции.', 'calendar-event', 0, 15, 'active_registrations:3', NOW()),
+                    (1013, 'Полный календарь', 'Иметь 5 активных записей на будущие лекции.', 'alarm', 0, 30, 'active_registrations:5', NOW()),
+                    (1014, 'Серия интереса', 'Посещать открытые лекции 3 недели подряд.', 'star', 0, 50, 'attendance_streak_weeks:3', NOW()),
+                    (1015, 'Учебный месяц', 'Посещать открытые лекции 4 недели подряд.', 'sparkles', 0, 80, 'attendance_streak_weeks:4', NOW()),
+                    (1016, 'Без пропусков', 'Посетить 5 лекций, на которые была оформлена запись.', 'circle-check', 0, 40, 'attended_registered:5', NOW()),
+                    (1017, 'Надежный участник', 'Посетить 10 лекций, на которые была оформлена запись.', 'shield', 0, 75, 'attended_registered:10', NOW()),
+                    (1018, 'Капитал знаний', 'Получить 500 монет за активность на платформе.', 'coin', 0, 80, 'coins_earned:500', NOW()),
+                    (1019, 'Новый уровень', 'Достигнуть 2 уровня.', 'star', 0, 25, 'level_reached:2', NOW()),
+                    (1020, 'Уверенный рост', 'Достигнуть 5 уровня.', 'chart-bar', 0, 100, 'level_reached:5', NOW()),
+                    (1021, 'Профиль заполнен', 'Заполнить имя и аватар в профиле.', 'user', 0, 10, 'profile_completed:1', NOW())
+                ON CONFLICT (id) DO UPDATE
+                SET name = EXCLUDED.name,
+                    description = EXCLUDED.description,
+                    icon_url = EXCLUDED.icon_url,
+                    xp_reward = EXCLUDED.xp_reward,
+                    coin_reward = EXCLUDED.coin_reward,
+                    condition = EXCLUDED.condition;
+                """);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql("DELETE FROM achievements WHERE id BETWEEN 1001 AND 1021;");
+        }
+    }
+}

backend/UniVerse.Infrastructure/Services/AchievementService.cs

@@ -14,7 +14,7 @@ public class AchievementService : IAchievementService
     public AchievementService(AppDbContext db) => _db = db;
 
     public async Task<List<AchievementDto>> GetAllAsync() =>
-        await _db.Achievements.OrderBy(a => a.Name).Select(a => a.ToDto()).ToListAsync();
+        await _db.Achievements.OrderBy(a => a.Id).Select(a => a.ToDto()).ToListAsync();
 
     public async Task<AchievementDto> GetByIdAsync(int id)
     {

backend/UniVerse.Infrastructure/Services/GamificationService.cs

@@ -1,6 +1,7 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.Logging;
+using System.Globalization;
 using UniVerse.Application.DTOs.Achievements;
 using UniVerse.Application.DTOs.Common;
 using UniVerse.Application.DTOs.Gamification;
@@ -41,32 +42,109 @@ public class GamificationService : IGamificationService
 
     public async Task CheckAndAwardAchievementsAsync(int userId)
     {
-        var achievements = await _db.Achievements.ToListAsync();
+        var user = await _db.Users
+            .Include(u => u.StudentProfile)
+            .FirstOrDefaultAsync(u => u.Id == userId);
+        if (user == null) return;
+
+        var achievements = await _db.Achievements.OrderBy(a => a.Id).ToListAsync();
         var existing = await _db.UserAchievements.Where(ua => ua.UserId == userId)
             .Select(ua => ua.AchievementId).ToListAsync();
         var reviews = await _db.Reviews.CountAsync(r => r.UserId == userId);
+        var registered = await _db.LectureEnrollments.CountAsync(e => e.UserId == userId);
         var attended = await _db.LectureEnrollments.CountAsync(e => e.UserId == userId && e.Attended);
+        var activeRegistrations = await _db.LectureEnrollments
+            .Include(e => e.Lecture)
+            .CountAsync(e => e.UserId == userId && e.Lecture.StartsAt > DateTime.UtcNow);
+        var earnedCoins = await _db.CoinTransactions
+            .Where(ct => ct.UserId == userId && ct.Amount > 0)
+            .SumAsync(ct => (int?)ct.Amount) ?? 0;
+        var attendanceStreakWeeks = await CalculateAttendanceStreakWeeksAsync(userId);
+        var profileCompleted = !string.IsNullOrWhiteSpace(user.DisplayName)
+            && !string.IsNullOrWhiteSpace(user.AvatarUrl);
+        var firstActivity = registered > 0 || reviews > 0 || attended > 0;
 
         foreach (var achievement in achievements.Where(a => !existing.Contains(a.Id)))
         {
-            var earned = achievement.Condition switch
+            if (!TryParseCondition(achievement.Condition, out var type, out var value)) continue;
+
+            var earned = type switch
             {
-                "reviews_1" => reviews >= 1,
-                "reviews_5" => reviews >= 5,
-                "reviews_10" => reviews >= 10,
-                "attended_5" => attended >= 5,
-                "attended_10" => attended >= 10,
+                "lectures_attended" => attended >= value,
+                "reviews_written" => reviews >= value,
+                "lectures_registered" => registered >= value,
+                "active_registrations" => activeRegistrations >= value,
+                "attendance_streak_weeks" => attendanceStreakWeeks >= value,
+                "attended_registered" => attended >= value,
+                "coins_earned" => earnedCoins >= value,
+                "level_reached" => CalculateLevel(user.Xp) >= value,
+                "profile_completed" => profileCompleted && value <= 1,
+                "first_activity" => firstActivity && value <= 1,
                 _ => false
             };
             if (!earned) continue;
+
             _db.UserAchievements.Add(new UserAchievement { UserId = userId, AchievementId = achievement.Id });
             if (achievement.CoinReward > 0)
+            {
                 await AwardCoinsAsync(userId, achievement.CoinReward, CoinTransactionType.AchievementReward,
                     achievementId: achievement.Id, description: $"Achievement: {achievement.Name}");
+                earnedCoins += achievement.CoinReward;
+            }
         }
         await _db.SaveChangesAsync();
     }
 
+    private static bool TryParseCondition(string? condition, out string type, out int value)
+    {
+        type = string.Empty;
+        value = 0;
+
+        var parts = condition?.Split(':', 2, StringSplitOptions.TrimEntries);
+        if (parts is not { Length: 2 } || string.IsNullOrWhiteSpace(parts[0])) return false;
+        if (!int.TryParse(parts[1], out value)) return false;
+
+        type = parts[0];
+        return value >= 0;
+    }
+
+    private async Task<int> CalculateAttendanceStreakWeeksAsync(int userId)
+    {
+        var lectureDates = await _db.LectureEnrollments
+            .Include(e => e.Lecture)
+            .Where(e => e.UserId == userId && e.Attended)
+            .Select(e => e.Lecture.StartsAt)
+            .ToListAsync();
+
+        var weekStarts = lectureDates
+            .Select(GetIsoWeekStart)
+            .Distinct()
+            .OrderBy(d => d)
+            .ToList();
+
+        var best = 0;
+        var current = 0;
+        DateOnly? previous = null;
+
+        foreach (var weekStart in weekStarts)
+        {
+            current = previous.HasValue && weekStart.DayNumber - previous.Value.DayNumber == 7
+                ? current + 1
+                : 1;
+            best = Math.Max(best, current);
+            previous = weekStart;
+        }
+
+        return best;
+    }
+
+    private static DateOnly GetIsoWeekStart(DateTime date)
+    {
+        var isoYear = ISOWeek.GetYear(date);
+        var isoWeek = ISOWeek.GetWeekOfYear(date);
+        return DateOnly.FromDateTime(ISOWeek.ToDateTime(isoYear, isoWeek, DayOfWeek.Monday));
+    }
+
     public int CalculateLevel(int xp)
     {
         var thresholds = _config.GetSection("Gamification:XpThresholds").Get<int[]>()

backend/UniVerse.Infrastructure/Services/LectureService.cs

@@ -12,7 +12,13 @@ namespace UniVerse.Infrastructure.Services;
 public class LectureService : ILectureService
 {
     private readonly AppDbContext _db;
-    public LectureService(AppDbContext db) => _db = db;
+    private readonly IGamificationService _gamification;
+
+    public LectureService(AppDbContext db, IGamificationService gamification)
+    {
+        _db = db;
+        _gamification = gamification;
+    }
 
     private IQueryable<Lecture> BaseQuery() => _db.Lectures
         .Include(l => l.Course).Include(l => l.Teacher)
@@ -96,6 +102,7 @@ public class LectureService : ILectureService
             throw new ConflictException("Already enrolled.");
         _db.LectureEnrollments.Add(new LectureEnrollment { LectureId = lectureId, UserId = userId });
         await _db.SaveChangesAsync();
+        await _gamification.CheckAndAwardAchievementsAsync(userId);
     }
 
     public async Task UnenrollAsync(int lectureId, int userId)
@@ -114,6 +121,8 @@ public class LectureService : ILectureService
             ?? throw new NotFoundException("Enrollment not found.");
         enrollment.Attended = attended;
         await _db.SaveChangesAsync();
+        if (attended)
+            await _gamification.CheckAndAwardAchievementsAsync(userId);
     }
 
     public async Task<PagedResult<EnrollmentDto>> GetEnrollmentsAsync(int lectureId, PaginationRequest pagination)

backend/UniVerse.Infrastructure/Services/ReviewService.cs

@@ -13,7 +13,13 @@ namespace UniVerse.Infrastructure.Services;
 public class ReviewService : IReviewService
 {
     private readonly AppDbContext _db;
-    public ReviewService(AppDbContext db) => _db = db;
+    private readonly IGamificationService _gamification;
+
+    public ReviewService(AppDbContext db, IGamificationService gamification)
+    {
+        _db = db;
+        _gamification = gamification;
+    }
 
     private IQueryable<Review> BaseQuery() => _db.Reviews
         .Include(r => r.Lecture).Include(r => r.User);
@@ -31,6 +37,7 @@ public class ReviewService : IReviewService
         };
         _db.Reviews.Add(review);
         await _db.SaveChangesAsync();
+        await _gamification.CheckAndAwardAchievementsAsync(userId);
         var full = await BaseQuery().FirstAsync(r => r.Id == review.Id);
         return full.ToDto();
     }

backend/UniVerse.Infrastructure/Services/UserService.cs

@@ -41,6 +41,7 @@ public class UserService : IUserService
         user.UpdatedAt = DateTime.UtcNow;
 
         await _db.SaveChangesAsync();
+        await _gamification.CheckAndAwardAchievementsAsync(id);
         return user.ToDto(_gamification.CalculateLevel(user.Xp));
     }