[chore:] course instance collection

crafter.cs

@@ -6,12 +6,14 @@ namespace spplus;
 
 public class CourseCrafter
 {
-    private class CourseInstance
+    public class CourseInstance
     {
         public Sport Sport = null!;
         public int Remaining;
         public List<Student> Students = new();
     }
+    public static List<(int Semester, CourseInstance Instance)> GeneratedCourses 
+        = new();
     public static void Craft()
     {
         var settings = Settings.Instance;
@@ -79,11 +81,13 @@ public class CourseCrafter
 
                 for (int i = 0; i < allowed; i++)
                 {
-                    instances.Add(new CourseInstance
+                    var instance = new CourseInstance
                     {
                         Sport = sp,
                         Remaining = sp.MaxStudents
-                    });
+                    };
+                    instances.Add(instance);
+                    GeneratedCourses.Add((sem, instance));
                 }
             }
 
@@ -162,50 +166,36 @@ public class CourseCrafter
     
     public static string GenerateStatistics()
     {
-        var settings = Settings.Instance;
-        var students = settings.Students;
-        var sports = settings.Sports;
-
-        if (students.Count == 0 || sports.Count == 0)
-            return "Keine Daten vorhanden.";
-
-        int semesterCount = sports.Max(s => s.Semester.Length);
-
-        // Kurszählung: (Semester, SportName) → Liste Schüler
-        var dict = new Dictionary<(int, string), List<Student>>();
-
-        foreach (var st in students)
-        {
-            if (st.Result == null)
-                continue;
-
-            for (int sem = 0; sem < st.Result.Count; sem++)
-            {
-                var course = st.Result[sem];
-                if (string.IsNullOrWhiteSpace(course) || course == "Fehler")
-                    continue;
-
-                var key = (sem, course);
-
-                if (!dict.ContainsKey(key))
-                    dict[key] = new List<Student>();
-
-                dict[key].Add(st);
-            }
-        }
+        if (GeneratedCourses == null || GeneratedCourses.Count == 0)
+            return "Keine Kurse generiert.";
 
         var sb = new System.Text.StringBuilder();
 
-        sb.AppendLine($"Anzahl generierter Kurse: {dict.Count}");
+        sb.AppendLine($"Anzahl generierter Kurse: {GeneratedCourses.Count}");
         sb.AppendLine("Übersicht:");
 
-        foreach (var entry in dict.OrderBy(e => e.Key.Item1).ThenBy(e => e.Key.Item2))
-        {
-            int semester = entry.Key.Item1 + 1;
-            string name = entry.Key.Item2;
-            int count = entry.Value.Count;
+        var grouped = GeneratedCourses
+            .GroupBy(g => new { g.Semester, g.Instance.Sport.Name })
+            .OrderBy(g => g.Key.Semester)
+            .ThenBy(g => g.Key.Name);
 
-            sb.AppendLine($"Semester {semester}: {name} — {count} Schüler*innen");
+        foreach (var group in grouped)
+        {
+            int counter = 1;
+
+            foreach (var course in group)
+            {
+                string number = counter.ToString("D2");
+                int semester = group.Key.Semester + 1;
+                string sportName = group.Key.Name;
+                int studentCount = course.Instance.Students.Count;
+
+                sb.AppendLine(
+                    $"Semester {semester}: {sportName} {number}: {studentCount} Schüler*innen"
+                );
+
+                counter++;
+            }
         }
 
         return sb.ToString();