namespace GermanApp.Application.DTOs;

/// <summary>
/// DTO for admin user information.
/// </summary>
public record AdminUserDto(
    int Id,
    string Username,
    string Email,
    string Role,
    string CurrentLevel,
    int Streak,
    int TotalPoints,
    DateTime CreatedAt);

/// <summary>
/// DTO for user progress report.
/// </summary>
public record UserProgressReportDto(
    int UserId,
    string Username,
    string Email,
    string CurrentLevel,
    int TotalLessonsCompleted,
    int TotalQuizzesCompleted,
    double AverageQuizScore,
    int TotalPoints,
    int CurrentStreak,
    DateTime LastActivityDate);

/// <summary>
/// DTO for lesson completion status.
/// </summary>
public record LessonCompletionDto(
    int LessonId,
    string LessonTitle,
    string LevelCode,
    bool IsCompleted,
    DateTime? CompletedAt);

/// <summary>
/// DTO for user quiz result (for admin reports).
/// </summary>
public record UserQuizResultDto(
    int QuizId,
    string QuizTitle,
    int Score,
    int PassingScore,
    bool Passed,
    DateTime AttemptDate);

/// <summary>
/// DTO for creating a new story via admin.
/// </summary>
public record AdminCreateStoryDto(
    int LevelId,
    string Theme,
    int SegmentCount = 3,
    bool GenerateAudio = false);

/// <summary>
/// DTO for admin dashboard statistics.
/// </summary>
public record AdminDashboardStatsDto(
    int TotalUsers,
    int TotalLessons,
    int TotalQuizzes,
    int TotalStorySegments,
    int ActiveUsersThisWeek,
    double AverageUserProgress);

/// <summary>
/// DTO for user list item (for admin user management).
/// </summary>
public record AdminUserListItemDto(
    int Id,
    string Username,
    string Email,
    string Role,
    string CurrentLevel,
    int TotalPoints,
    int Streak,
    DateTime CreatedAt);

/// <summary>
/// DTO for updating user role (admin only).
/// </summary>
public record UpdateUserRoleDto(
    string Role);