[chore:] updated version

MainWindow.axaml

@@ -4,7 +4,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         x:Class="spplus.MainWindow" WindowState="Maximized"
-        Title="SP+">
+        Title="spplus">
     <Border>
         <Grid RowDefinitions="30,*">
             <Menu Background="#50888888">
@@ -20,7 +20,7 @@
                     <MenuItem Header="Über" x:Name="MnuAbout" Click="MnuAbout_OnClick"  />
                 </MenuItem>
             </Menu>
-            <TabControl x:Name="TclMainView" Grid.Row="1">
+            <TabControl x:Name="TclMainView" Grid.Row="1" TabStripPlacement="Left">
                 <TabItem>
                     <TabItem.Header>
                         <StackPanel Orientation="Horizontal">
@@ -88,6 +88,11 @@
                                 <Label  Content="Anzahl gewählte Kurse"></Label>
                                 <Label Grid.Column="1" x:Name="LblSelectedAmount"></Label>
                             </Grid>
+                            
+                            <Grid ColumnDefinitions="*,3*">
+                                <Label  Content="Wahlzahlen"></Label>
+                                <Label Grid.Column="1" x:Name="LblNumVoted"></Label>
+                            </Grid>
                         </StackPanel>
                         
 
@@ -171,23 +176,28 @@
                                 <StackPanel Grid.Column="1" Orientation="Vertical">
                                     <Grid ColumnDefinitions="*,50,50">
                                         <TextBox Grid.Column="0" Height="35" HorizontalAlignment="Stretch" x:Name="TbSportAlternativeName"></TextBox>
-                                        <Button Grid.Column="1" Margin="0,10,0,0" x:Name="BtnAlternativeNameAdd" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnAlternativeNameAdd_OnClick" HorizontalContentAlignment="Center">
+                                        <Button Grid.Column="1" Margin="5,0,0,0" x:Name="BtnAlternativeNameAdd" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnAlternativeNameAdd_OnClick" HorizontalContentAlignment="Center">
                                             <StackPanel Orientation="Horizontal">
                                                 <LucideIcon Kind="Plus" Width="24" Height="24" />
                                             </StackPanel>
                                         </Button>
-                                        <Button Grid.Column="2" Margin="0,10,0,0" x:Name="BtnAlternativeNameRemove" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnAlternativeNameRemove_OnClick" HorizontalContentAlignment="Center">
+                                        <Button Grid.Column="2" Margin="5,0,0,0" x:Name="BtnAlternativeNameRemove" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnAlternativeNameRemove_OnClick" HorizontalContentAlignment="Center">
                                             <StackPanel Orientation="Horizontal">
                                                 <LucideIcon Kind="Minus" Width="24" Height="24" />
                                             </StackPanel>
                                         </Button>
                                     </Grid>
-                                    <ListBox x:Name="LbAlternativeNames">
+                                    <ListBox Margin="0,5,0,0" x:Name="LbAlternativeNames">
 
                                     </ListBox>
                                 </StackPanel>
 
                             </Grid>
+                            <Line />
+                            <Grid ColumnDefinitions="*,3*">
+                                <Label  Content="Maximale Sportkursanzahl pro Semester"></Label>
+                                <NumericUpDown Grid.Column="1" x:Name="NudSportMaxPerSemester" ValueChanged="NudSportMaxPerSemester_OnValueChanged"></NumericUpDown>
+                            </Grid>
                         </StackPanel>
                     </Grid>
                 </TabItem>
@@ -200,21 +210,30 @@
                         </StackPanel>
                     </TabItem.Header>
                     <Grid ColumnDefinitions="*,*" RowDefinitions="50,2*,*">
-                        <ListBox Grid.RowSpan="2" x:Name="LbResult" Margin="10,10,10,10"></ListBox>
+                        <ListBox Grid.RowSpan="2" x:Name="LbResult" Margin="0,10,10,10"></ListBox>
-                        <Button Grid.Row="0" Grid.Column="1" Margin="0,10,0,0" x:Name="BtnExportCoursePDF" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnExportCoursePDF_OnClick" HorizontalContentAlignment="Center">
+                        <Grid Grid.Row="0" Grid.Column="1" Grid.ColumnDefinitions="*,*">
+                            <Button Grid.Column="0" Margin="0,10,0,0" x:Name="BtnExportCoursePDF" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnExportCoursePDF_OnClick" HorizontalContentAlignment="Center">
                                 <StackPanel Orientation="Horizontal">
                                     <LucideIcon Kind="FileText" Width="24" Height="24" />
                                     <Label Content="Export (PDF)..." VerticalContentAlignment="Center" FontSize="12"
                                            FontWeight="Bold" />
                                 </StackPanel>
                             </Button>
+                            <Button Grid.Column="1" Margin="5,10,0,0" x:Name="BtnExportCourseCSV" VerticalAlignment="Top" Height="35" HorizontalAlignment="Stretch" Click="BtnExportCourseCSV_OnClick" HorizontalContentAlignment="Center">
+                                <StackPanel Orientation="Horizontal">
+                                    <LucideIcon Kind="FileJson" Width="24" Height="24" />
+                                    <Label Content="Export (CSV)..." VerticalContentAlignment="Center" FontSize="12"
+                                           FontWeight="Bold" />
+                                </StackPanel>
+                            </Button>
+                        </Grid>
                         <ScrollViewer Grid.Row="1" Grid.Column="1" Margin="0,5,0,10" Background="#44CCCCCC">
                             <TextBlock x:Name="TbResultStatistics"></TextBlock>
                         </ScrollViewer>
-                        <ScrollViewer Grid.Row="2" Grid.Column="1" Margin="0" Background="#44CCCCCC">
+                        <ScrollViewer Grid.Row="2" Grid.Column="1" Margin="0,0,0,10" Background="#44CCCCCC">
                             <TextBlock x:Name="TbResultTextout" FontFamily="Consolas"></TextBlock>
                         </ScrollViewer>
-                        <ScrollViewer Grid.Row="2" Grid.Column="0" Margin="0" Background="#44CCCCCC">
+                        <ScrollViewer Grid.Row="2" Grid.Column="0" Margin="0,0,10,10" Background="#44CCCCCC">
                             <TextBlock x:Name="TbResultLog" FontFamily="Consolas"></TextBlock>
                         </ScrollViewer>
                     </Grid>

MainWindow.axaml.cs

@@ -11,11 +11,17 @@ namespace spplus;
 public partial class MainWindow : Window
 {
     public static MainWindow Instance { get; set; }
+    public static string ApplicationVersion = "v1.2.24";
     public MainWindow()
     {
         InitializeComponent();
         Settings.ImportInitial();
         Instance = this;
+        RefreshCoursesList();
+        try
+        {
+            NudSportMaxPerSemester.Value = Settings.Instance.NumCoursesPerSemester;
+        } catch {}
     }
 
     private void MnuExpSettings_OnClick(object? sender, RoutedEventArgs e)
@@ -35,7 +41,7 @@ public partial class MainWindow : Window
             Process.Start(new ProcessStartInfo
             {
                 FileName = "https://git.mypapercloud.de/fierke/spplus/wiki",
-                UseShellExecute = true // Wichtig für Plattformübergreifendes Öffnen
+                UseShellExecute = true 
             });
         }
         catch (Exception ex)
@@ -51,7 +57,7 @@ public partial class MainWindow : Window
             Process.Start(new ProcessStartInfo
             {
                 FileName = "https://git.mypapercloud.de/fierke/spplus",
-                UseShellExecute = true // Wichtig für Plattformübergreifendes Öffnen
+                UseShellExecute = true 
             });
         }
         catch (Exception ex)
@@ -70,7 +76,7 @@ public partial class MainWindow : Window
         Grid g = new();
         TextBlock tb = new()
         {
-            Text = "spplus v1.0.0\n(c)2026 MyPapertown, Elias Fierke"
+            Text = $"spplus {MainWindow.ApplicationVersion}\n(c)2026 MyPapertown, Elias Fierke"
         };
         g.Children.Add(tb);
         w.Content = g;
@@ -117,14 +123,40 @@ public partial class MainWindow : Window
         LblStudentAmount.Content =  Settings.Instance.Students.Count.ToString();
         LblSelectedAmount.Content =  count_selected.ToString();
         
+        List<(Sport, List<string>)> initial_sportlist = new();
+        foreach (var sp in Settings.Instance.Sports)
+        {
+            initial_sportlist.Add((sp, new()));
+        }
+        foreach (Student s in Settings.Instance.Students)
+        {
+            foreach (var sp in s.SelectedCourseNames)
+            {
+                foreach (var item in initial_sportlist)
+                {
+                    if (item.Item1.AlternativeNames.Contains(sp))
+                    {
+                        item.Item2.Add(s.ID);
+                        break;
+                    }
+                }
+            }
+        }
+
+        LblNumVoted.Content = "";
+        foreach (var s in initial_sportlist)
+        {
+            LblNumVoted.Content += $"{s.Item1.Name}: {s.Item2.Count}\n";
+        }
+        
     }
 
     private void BtnCraftCourses_OnClick(object? sender, RoutedEventArgs e)
     {
-        // Craft courses here / call course-crafter
         CourseCrafter.Craft();
         RefreshResultView();
-        TbiResults.Focus();
+        TclMainView.SelectedIndex = 2;
+        //TbiResults.Focus();
     }
 
     private void RefreshResultView()
@@ -134,7 +166,7 @@ public partial class MainWindow : Window
         {
             try
             {
-                for(int i = 0; i<s.Result.Count;i++)
+                for(int i = 0; i<s.Result.Length;i++)
                 {
                     LbResult.Items.Add($"{s.Name} ({s.ID}) - {i+1}. Semester: {s.Result[i]}");
                 }
@@ -383,4 +415,31 @@ public partial class MainWindow : Window
     {
         // Export as PDF
     }
+
+    private void NudSportMaxPerSemester_OnValueChanged(object? sender, NumericUpDownValueChangedEventArgs e)
+    {
+        try
+        {
+            Settings.Instance.NumCoursesPerSemester = Convert.ToInt32(NudSportMaxPerSemester.Value);
+        } catch {}
+    }
+
+    private async void BtnExportCourseCSV_OnClick(object? sender, RoutedEventArgs e)
+    {
+        var topLevel = GetTopLevel(this);
+        var file = await topLevel!.StorageProvider.SaveFilePickerAsync(new FilePickerSaveOptions
+        {
+            Title = "CSV-Datei speichern",
+            SuggestedFileType = new FilePickerFileType(".csv-Datei")
+            {
+                Patterns = new[] { "*.csv" }
+            }
+            
+        });
+
+        if (file == null) return;
+
+        ExportUtility.ExportToCSV(file.Path.AbsolutePath);
+
+    }
 }

README.md

@@ -1,13 +1,15 @@
 # SP+
 
-Interaktiver Sportkursplaner für Oberstufen auf Basis einer Sportkurswahl durch SuS.
+Plattformunabhängiger (Windows, Linux, Mac), interaktiver Sportkursplaner für Oberstufen auf Basis einer Sportkurswahl durch SuS.
 
 ## Features
 * \+ Import von CSV-Dateien mit Kurswahl
 * \+ Wahlansicht 
 * \+ Statistiken
 * \+ Pflege von Sportkursen (inkl. Kürzel/ alternativen Bezeichnungen)
+* \+ CSV-Export
 * ~ Fehleransicht für nicht-existente, aber gewählte Kurse
+* ~ PDF-Export
 
 \+ Vorhanden, ~ Pending
 

crafter.cs

@@ -80,17 +80,13 @@ public class CourseCrafter
                     }
                     GeneratedCourses.Add((semester, inst));
                     
-                    MainWindow.Instance.TbResultLog.Text += ($"{semester} -> {inst.Students.Count}\n");
+                    //MainWindow.Instance.TbResultLog.Text += ($"{semester} -> {inst.Students.Count}\n");
-                    MainWindow.Instance.TbResultLog.Text += ($"{students_in_semester[0].Count} - {students_in_semester[1].Count} - {students_in_semester[2].Count} - {students_in_semester[3].Count}\n\n");
+                    //MainWindow.Instance.TbResultLog.Text += ($"{students_in_semester[0].Count} - {students_in_semester[1].Count} - {students_in_semester[2].Count} - {students_in_semester[3].Count}\n\n");
                 }
 
                 semeq0: ;
             }
             
-            // foreach (var item in initial_sportlist)
-            // {
-            //     Console.WriteLine($"{item.Item1.Name}: {item.Item2.Count}x gewählt");
-            // }
             
         }
         
@@ -124,32 +120,79 @@ public class CourseCrafter
                             item.Item2.Remove(s);    
                         }
                     }
-                    MainWindow.Instance.TbResultLog.Text += ($"{ci.Semester} -> {ci.Instance.Students.Count}\n");
+                    //MainWindow.Instance.TbResultLog.Text += ($"{ci.Semester} -> {ci.Instance.Students.Count}\n");
-                    MainWindow.Instance.TbResultLog.Text += ($"{students_in_semester[0].Count} - {students_in_semester[1].Count} - {students_in_semester[2].Count} - {students_in_semester[3].Count}\n\n");
+                    //MainWindow.Instance.TbResultLog.Text += ($"{students_in_semester[0].Count} - {students_in_semester[1].Count} - {students_in_semester[2].Count} - {students_in_semester[3].Count}\n\n");
                 }
             }
             
         }
         
-        int getSemester()
+        // Kurs umdisponieren (besser verteilen)
+        // Kurs umdisponieren (besser verteilen)
+        bool changed;
+        int maxIterations = 20;
+        int iteration = 0;
+
+        do
         {
-            //int sem = 0;
+            changed = false;
-            if (GeneratedCourses.Count == 0) return 1; // zunächst im ersten Semester beginnen
+            iteration++;
-            int[] semcount = new int[4] {0,0,0,0}; // Anzahl der generierten Kurse im jeweiligen Semester
+
-            foreach (var inst in GeneratedCourses) 
+            // nach Sport gruppieren
+            var sports = GeneratedCourses
+                .GroupBy(c => c.Instance.Sport.ID);
+
+            foreach (var sportGroup in sports)
             {
-                semcount[inst.Semester - 1]++; // ...füllen
+                var courses = sportGroup.ToList();
+
+                // paarweise vergleichen
+                for (int i = 0; i < courses.Count; i++)
+                {
+                    for (int j = 0; j < courses.Count; j++)
+                    {
+                        if (i == j) continue;
+
+                        var cA = courses[i];
+                        var cB = courses[j];
+
+                        // nur sinnvoll, wenn Unterschied
+                        if (cA.Instance.Students.Count <= cB.Instance.Students.Count + 1)
+                            continue;
+
+                        // Kandidaten aus A nach B verschieben
+                        for (int k = cA.Instance.Students.Count - 1; k >= 0; k--)
+                        {
+                            string stud = cA.Instance.Students[k];
+
+                            // 1. Zielsemester frei?
+                            if (!isStudentFree(cB.Semester, stud))
+                                continue;
+
+                            // 2. Zielkurs hat noch Platz?
+                            if (cB.Instance.Students.Count >= cB.Instance.Sport.MaxStudents)
+                                continue;
+
+                            // 3. Quellkurs darf nicht unter Min fallen
+                            if (cA.Instance.Students.Count - 1 < cA.Instance.Sport.MinStudents)
+                                continue;
+
+                            // --- MOVE durchführen ---
+                            cA.Instance.Students.RemoveAt(k);
+                            students_in_semester[cA.Semester - 1].Remove(stud);
+
+                            cB.Instance.Students.Add(stud);
+                            students_in_semester[cB.Semester - 1].Add(stud);
+
+                            changed = true;
+                            break; // nach jedem Move neu bewerten
+                        }
+                    }
+                }
             }
 
-            for (int i = 0; i<semcount.Length; i++) // durchlaufen und prüfen
+        } while (changed && iteration < maxIterations);
-            {
+        
-                if (semcount[i] < Settings.Instance.NumCoursesPerSemester)
-                {
-                    return i+1; // Semester zurückgeben, wenn genug da sind
-                }
-            }
-            return 0;
-        }
 
         bool isStudentFree(int semester, string studentID)
         {
@@ -173,17 +216,6 @@ public class CourseCrafter
             // max Kursanzahl
             if (GeneratedCourses.Count >= Settings.Instance.NumCoursesPerSemester * 4) return true;
             
-            // // max Anzahl in allen Semestern
-            // foreach(int sem in new[]{1,2,3,4})
-            // {
-            //     int count = 0;
-            //     foreach (var inst in GeneratedCourses)
-            //     {
-            //         if (inst.Semester == sem) count++;
-            //     }
-            //
-            //     if (sem >= Settings.Instance.NumCoursesPerSemester);
-            // }
 
             int low = 0;
             foreach (var item in initial_sportlist)
@@ -193,7 +225,7 @@ public class CourseCrafter
 
             if (low >= initial_sportlist.Count) return true;
 
-            if (globalCount >= 12) return true;
+            if (globalCount >= 20) return true;
             return false;
         }
 
@@ -202,142 +234,111 @@ public class CourseCrafter
             MainWindow.Instance.TbResultTextout.Text += $"{tuple.Item1}: {tuple.Item2.Count} remaining\n";
         }
         
-        int getSemesterForSport(Sport sp)
+        // ...existing code...
+        int getSemesterForSport2(Sport sp)
         {
-            int[] semcount = new int[4] {0,0,0,0};
+            int[] semcount = new int[4];
 
             foreach (var inst in GeneratedCourses)
-            {
                 semcount[inst.Semester - 1]++;
-            }
+
+            int bestSem = 0;
+            int minCourses = int.MaxValue;
 
             for (int i = 0; i < 4; i++)
             {
-                // 1. Ist der Sport in diesem Semester erlaubt?
                 if (sp.Semester[i] == 0) continue;
 
-                // 2. Ist noch Platz für Kurse?
+                // prüfen, ob für diesen Sport im Semester i schon die maximale Anzahl erreicht ist
-                if (semcount[i] < Settings.Instance.NumCoursesPerSemester)
+                int sportCoursesInSemester = GeneratedCourses
-                {
+                    .Count(g => g.Semester == i + 1 && g.Instance.Sport.ID == sp.ID);
-                    return i + 1;
-                }
-            }
 
-            return 0;
+                if (sportCoursesInSemester >= sp.Semester[i])
-        }
-
-        
-    }
-    public static void CraftOld()
-    {
-        GeneratedCourses = new();
-
-        var settings = Settings.Instance;
-        var students = settings.Students;
-        var sports = settings.Sports;
-
-        if (students.Count == 0 || sports.Count == 0)
-            return;
-
-        int semesterCount = sports.Max(s => s.Semester.Length);
-
-        foreach (var st in students)
-            st.Result = Enumerable.Repeat("Fehler", semesterCount).ToList();
-
-        var nameMap = new Dictionary<string, Sport>(StringComparer.OrdinalIgnoreCase);
-        foreach (var sp in sports)
-        {
-            nameMap[sp.Name] = sp;
-            foreach (var alt in sp.AlternativeNames)
-                nameMap[alt] = sp;
-        }
-
-        // Nachfrage je Sport
-        var demand = new Dictionary<Sport, List<Student>>();
-        foreach (var sp in sports)
-            demand[sp] = new List<Student>();
-
-        foreach (var st in students)
-        {
-            foreach (var sel in st.SelectedCourseNames.Distinct())
-            {
-                if (nameMap.TryGetValue(sel, out var sp))
-                    demand[sp].Add(st);
-            }
-        }
-
-        // ===== Semesterweise echte Verteilung =====
-        for (int sem = 0; sem < semesterCount; sem++)
-        {
-            int remainingSemesterSlots = settings.NumCoursesPerSemester;
-
-            foreach (var sp in sports)
-            {
-                if (sem >= sp.Semester.Length)
                     continue;
 
-                if (remainingSemesterSlots <= 0)
+                if (semcount[i] < Settings.Instance.NumCoursesPerSemester &&
-                    break;
+                    semcount[i] < minCourses)
+                {
+                    minCourses = semcount[i];
+                    bestSem = i + 1;
+                }
+            }
 
-                var interested = demand[sp]
+            return bestSem;
-                    .Where(st =>
+        }
-                        st.Result![sem] == "Fehler" &&
-                        !st.Result.Contains(sp.Name))
-                    .ToList();
         
-                if (interested.Count < sp.MinStudents)
+        int getSemesterForSport(Sport sp)
+        {
+            // 1. Zähle alle Kurse pro Semester (egal welche Sportart)
+            int[] totalCoursesPerSemester = new int[4];
+            foreach (var inst in GeneratedCourses)
+                totalCoursesPerSemester[inst.Semester - 1]++;
+
+            int bestSem = 0;
+            int minCourses = int.MaxValue;
+
+            // 2. Kandidaten-Semester durchgehen
+            for (int i = 0; i < 4; i++)
+            {
+                // a) Sport darf in diesem Semester gar nicht stattfinden?
+                if (sp.Semester[i] == 0)
                     continue;
 
-                int maxInstances = Math.Min(sp.Semester[sem], remainingSemesterSlots);
+                int semesterNumber = i + 1;
-                int instanceCount = 0;
-                int index = 0;
 
-                while (interested.Count - index >= sp.MinStudents &&
+                // b) Wie viele Kurse DIESES Sports gibt es schon in diesem Semester?
-                       instanceCount < maxInstances)
+                int sportCoursesInThisSemester = GeneratedCourses
-                {
+                    .Count(g => g.Semester == semesterNumber &&
-                    var inst = new CourseInstance
+                                g.Instance.Sport.Name == sp.Name);
-                    {
-                        Sport = sp,
-                        Remaining = sp.MaxStudents
-                    };
 
-                    GeneratedCourses.Add((sem, inst));
+                // c) Pro-Sport-Limit erreicht?
-                    remainingSemesterSlots--;
+                if (sportCoursesInThisSemester >= sp.Semester[i])
-                    instanceCount++;
-
-                    int filled = 0;
-
-                    while (filled < sp.MaxStudents &&
-                           index < interested.Count)
-                    {
-                        var st = interested[index++];
-
-                        if (st.Result![sem] != "Fehler")
                     continue;
 
-                        //inst.Students.Add(st);
+                // d) Globales Limit pro Semester erreicht?
-                        inst.Remaining--;
+                if (totalCoursesPerSemester[i] >= Settings.Instance.NumCoursesPerSemester)
-                        st.Result[sem] = sp.Name;
+                    continue;
-                        filled++;
-                    }
 
-                    // Falls Mindestanzahl nicht erreicht → Instanz verwerfen
+                // e) Wähle das Semester mit bisher insgesamt den wenigsten Kursen
-                    if (inst.Students.Count < sp.MinStudents)
+                if (totalCoursesPerSemester[i] < minCourses)
                 {
-                        //foreach (var st in inst.Students)
+                    minCourses = totalCoursesPerSemester[i];
-                            //st.Result[sem] = "Fehler";
+                    bestSem = semesterNumber;
+                }
+            }
 
-                        GeneratedCourses.Remove((sem, inst));
+            return bestSem; // 0, falls kein zulässiges Semester gefunden
-                        remainingSemesterSlots++;
+        }
-                        break;
+
-                    }
+        var errors = ValidateCourses(GeneratedCourses);
+
+        if (errors.Count == 0)
+        {
+            MainWindow.Instance.TbResultLog.Text = "--- Alle generierten Kursen erfüllen die gegebenen Voraussetzungen ---";
+        }
+        else
+        {
+            MainWindow.Instance.TbResultLog.Text = "--- Bei der Generierung sind folgende Fehler aufgetreten: ---\n\n";
+            foreach (var e in errors)
+                MainWindow.Instance.TbResultLog.Text += e + "\n";
+        }
+        
+        foreach (var course in GeneratedCourses)
+        {
+            foreach (var student in Settings.Instance.Students)
+            {
+                if (course.Instance.Students.Contains(student.ID))
+                {
+                    student.Result[course.Semester-1] = course.Instance.Sport.Name;
                 }
             }
         }
+        
     }
 
     public static string GenerateStatistics()
     {
+        GeneratedCourses.Sort((x,y) => x.Semester.CompareTo(y.Semester) );
         string sb = $"Generierte Kurse: {GeneratedCourses.Count}\n\n";
         foreach (var genc in GeneratedCourses)
         {
@@ -349,64 +350,106 @@ public class CourseCrafter
         return sb;
     }
     
-    public static string GenerateStatisticsOld()
+    public static List<string> ValidateCourses(List<(int Semester, CourseInstance Instance)> courses)
     {
-        var settings = Settings.Instance;
+        List<string> errors = new();
-        var students = settings.Students;
 
-        if (GeneratedCourses == null || GeneratedCourses.Count == 0)
+        // --- 1. Min/Max + Semester erlaubt ---
-            return "Keine Kurse generiert.";
+        foreach (var tuple in courses)
-
-        int semesterCount = students
-            .Where(s => s.Result != null)
-            .Select(s => s.Result!.Count)
-            .DefaultIfEmpty(0)
-            .Max();
-
-        var sb = new System.Text.StringBuilder();
-
-        sb.AppendLine($"Anzahl generierter Kurse: {GeneratedCourses.Count}");
-        sb.AppendLine("Übersicht:");
-
-        // ===== Kursübersicht =====
-        var grouped = GeneratedCourses
-            .GroupBy(g => new { g.Semester, g.Instance.Sport.Name })
-            .OrderBy(g => g.Key.Semester)
-            .ThenBy(g => g.Key.Name);
-
-        foreach (var group in grouped)
         {
-            int counter = 1;
+            int semester = tuple.Semester;
+            var inst = tuple.Instance;
+            var sport = inst.Sport;
 
-            foreach (var entry in group)
+            if (inst.Students.Count < sport.MinStudents)
             {
-                int semester = group.Key.Semester + 1;
+                errors.Add($"[Min] {sport.Name} (Sem {semester}): {inst.Students.Count} < {sport.MinStudents}");
-                string sportName = group.Key.Name;
+            }
-                string number = counter.ToString("D2");
-                int count = entry.Instance.Students.Count;
 
-                sb.AppendLine(
+            if (inst.Students.Count > sport.MaxStudents)
-                    $"Semester {semester}: {sportName} {number}: {count} Schüler*innen"
+            {
-                );
+                errors.Add($"[Max] {sport.Name} (Sem {semester}): {inst.Students.Count} > {sport.MaxStudents}");
+            }
 
-                counter++;
+            if (sport.Semester[semester - 1] == 0)
+            {
+                errors.Add($"[Semester] {sport.Name} darf nicht in Semester {semester} stattfinden");
+            }
+
+            // --- doppelte Schüler im selben Kurs ---
+            for (int i = 0; i < inst.Students.Count; i++)
+            {
+                for (int j = i + 1; j < inst.Students.Count; j++)
+                {
+                    if (inst.Students[i] == inst.Students[j])
+                    {
+                        errors.Add($"[Kurs-Duplikat] {inst.Students[i]} mehrfach in {sport.Name} (Sem {semester})");
+                    }
+                }
             }
         }
 
-        sb.AppendLine();
+        // --- 2. Schüler doppelt im Semester ---
-        sb.AppendLine("Fehlerübersicht:");
+        for (int sem = 1; sem <= 4; sem++)
-
-        // ===== Fehler pro Semester =====
-        for (int sem = 0; sem < semesterCount; sem++)
         {
-            int errors = students.Count(st =>
+            List<string> students = new();
-                st.Result != null &&
-                st.Result.Count > sem &&
-                st.Result[sem] == "Fehler");
 
-            sb.AppendLine($"Semester {sem + 1}: {errors} Fehler");
+            foreach (var tuple in courses)
+            {
+                if (tuple.Semester != sem) continue;
+
+                foreach (var stud in tuple.Instance.Students)
+                {
+                    // prüfen ob schon drin
+                    bool exists = false;
+                    foreach (var s in students)
+                    {
+                        if (s == stud)
+                        {
+                            exists = true;
+                            break;
+                        }
                     }
 
-        return sb.ToString();
+                    if (exists)
+                    {
+                        errors.Add($"[Doppelt] Schüler {stud} doppelt in Semester {sem}");
+                    }
+                    else
+                    {
+                        students.Add(stud);
+                    }
+                }
+            }
+        }
+
+        // --- 3. Sport-Angebote pro Semester zählen ---
+        // (ohne Dictionary: wir iterieren über alle Kurse und zählen jeweils erneut)
+
+        foreach (var tuple in courses)
+        {
+            int semester = tuple.Semester;
+            var sport = tuple.Instance.Sport;
+
+            int count = 0;
+
+            foreach (var other in courses)
+            {
+                if (other.Semester == semester &&
+                    other.Instance.Sport.Name == sport.Name)
+                {
+                    count++;
+                }
+            }
+
+            int allowed = sport.Semester[semester - 1];
+
+            if (count > allowed)
+            {
+                errors.Add($"[Sport-Semester] {sport.Name} in Sem {semester}: {count} Kurse > erlaubt {allowed}");
+            }
+        }
+
+        return errors;
     }
 }

exporter.cs

@@ -0,0 +1,19 @@
+using System.IO;
+
+namespace spplus;
+
+public static class ExportUtility
+{
+    public static void ExportToCSV(string filepath)
+    {
+        char separator = ',';
+        string header = $"SchuelerID{separator}Sem1{separator}Sem2{separator}Sem3{separator}Sem4";
+        string output = header + "\n";
+        foreach (var student in Settings.Instance.Students)
+        {
+            output += $"{student.ID}{separator}{student.Result[0]}{separator}{student.Result[1]}{separator}{student.Result[2]}{separator}{student.Result[3]}\n";
+        }
+        
+        File.WriteAllText(filepath, output);
+    }
+}

structs.cs

@@ -59,7 +59,7 @@ public class Student
     public string ID { get; set; } = "";        // ID des Schüler (z.B. NolteSeb)
     public string Name { get; set; } = "";        // Name des Schülers
     public List<string> SelectedCourseNames { get; set; } = new();
-    public List<string>? Result { get; set; } = null;
+    public string[] Result { get; set; } = new string[4];
 
     public Student()
     {