Initial

LehrerApp.Core/Models/LearningGroup.cs

@@ -0,0 +1,33 @@
+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)
+}