namespace LehrerApp.Core.Models;

public class LearningGroup
{
    public Guid Id { get; set; } = Guid.NewGuid();
    public string Name { get; set; } = "";              // "10E", "Q1 Chemie"
    public GroupType Type { get; set; }
    public string? Subject { get; set; }                // "Chemie", "Mathematik"
    public string SchoolYear { get; set; } = "";        // "2024/25"
    public int GradeLevel { get; set; }                 // 5, 10, 11, 12 ...
    public GradingSystem GradingSystem { get; set; }
    public int? HoursPerWeek { get; set; }
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
}

public class Enrollment
{
    public Guid Id { get; set; } = Guid.NewGuid();
    public Guid StudentId { get; set; }
    public Guid GroupId { get; set; }
    public string SchoolYear { get; set; } = "";
    public DateOnly EnrolledAt { get; set; } = DateOnly.FromDateTime(DateTime.Today);
    public DateOnly? LeftAt { get; set; }               // bei Wechsel mid-year
}

public enum GroupType { Class, Course }

public enum GradingSystem
{
    Grades1To6,     // Noten 1–6 (Sek I)
    Points0To15,    // Punkte 0–15 (Oberstufe)
}