KI-Backend: Antwortretten - Funktion

LehrerApp.Desktop/Services/AiPlanningService.cs

@@ -10,7 +10,14 @@ using System.Text.Json.Serialization;
 namespace LehrerApp.Desktop.Services;
 
 /// <summary>Fehler beim Aufruf des KI-Backends, Message ist bereits deutsch und nutzergerichtet.</summary>
-public class AiBackendException(string userMessage) : Exception(userMessage);
+public class AiBackendException(string userMessage, string? rawResponse = null) : Exception(userMessage)
+{
+    /// <summary>
+    /// Unveränderte Modellantwort, sofern der Fehler beim Lesen einer Planungsantwort entstand.
+    /// Sie wird ausschließlich für den ausdrücklich vom Nutzer gestarteten Rettungsdialog gehalten.
+    /// </summary>
+    public string? RawResponse { get; } = rawResponse;
+}
 
 /// <summary>
 /// Der KI-Wire-Vertrag verwendet deutsches Datumsformat (siehe ai-backend/plan.php Systemprompt,
@@ -87,16 +94,19 @@ public class AiPlanningService(HttpClient http, ILessonRepository lessons,
     private static async Task<AiBackendException> BuildRequestFailedExceptionAsync(HttpResponseMessage resp)
     {
         string? backendReason = null;
+        string? rawResponse = null;
         try
         {
-            var body = await resp.Content.ReadFromJsonAsync<BackendErrorResult>(JsonOptions);
+            var responseText = await resp.Content.ReadAsStringAsync();
+            var body = JsonSerializer.Deserialize<BackendErrorResult>(responseText, JsonOptions);
             backendReason = string.IsNullOrWhiteSpace(body?.Error) ? null : body!.Error;
+            rawResponse = string.IsNullOrWhiteSpace(body?.RawResponse) ? null : body!.RawResponse;
         }
         catch { /* Antwortkörper war kein valides {"error": "..."}-JSON - Fallback unten greift. */ }
 
         return new AiBackendException(backendReason is null
             ? "Die Anfrage an den KI-Dienst ist fehlgeschlagen."
-            : $"Die Anfrage an den KI-Dienst ist fehlgeschlagen: {backendReason}");
+            : $"Die Anfrage an den KI-Dienst ist fehlgeschlagen: {backendReason}", rawResponse);
     }
 
     public async Task<string> LoginAsync(string username, string password)
@@ -352,14 +362,64 @@ public class AiPlanningService(HttpClient http, ILessonRepository lessons,
         if (!resp.IsSuccessStatusCode)
             throw await BuildRequestFailedExceptionAsync(resp);
 
+        var responseText = await resp.Content.ReadAsStringAsync();
         try
         {
-            var result = await resp.Content.ReadFromJsonAsync<AiPlanningResponse>(JsonOptions);
+            var result = JsonSerializer.Deserialize<AiPlanningResponse>(responseText, JsonOptions);
             return result ?? throw new AiBackendException("Die Antwort der KI konnte nicht verarbeitet werden.");
         }
         catch (Exception ex) when (ex is not AiBackendException)
         {
-            throw new AiBackendException("Die Antwort der KI konnte nicht verarbeitet werden. Bitte erneut versuchen.");
+            string? rawModelResponse = null;
+            try
+            {
+                using var envelope = JsonDocument.Parse(responseText);
+                if (envelope.RootElement.TryGetProperty("rawResponse", out var rawElement)
+                    && rawElement.ValueKind == JsonValueKind.String)
+                    rawModelResponse = rawElement.GetString();
+            }
+            catch (JsonException) { /* Die HTTP-Antwort selbst war ungültig; unten komplett zeigen. */ }
+
+            throw new AiBackendException(
+                "Die Antwort der KI konnte nicht verarbeitet werden. Du kannst die Antwort manuell retten.",
+                string.IsNullOrWhiteSpace(rawModelResponse) ? responseText : rawModelResponse);
+        }
+    }
+
+    /// <summary>
+    /// Liest eine von Hand markierte Modellantwort. Akzeptiert die normale Antwort-Hülle, ein
+    /// einzelnes Lesson-Objekt oder ein Array von Lessons, damit auch nur der relevante Ausschnitt
+    /// der Rohantwort markiert werden kann.
+    /// </summary>
+    public static List<AiLesson> ParsePlanningLessons(string json)
+    {
+        if (string.IsNullOrWhiteSpace(json))
+            throw new AiBackendException("Bitte markiere zuerst den JSON-Abschnitt der Antwort.");
+
+        try
+        {
+            using var document = JsonDocument.Parse(json);
+            var root = document.RootElement;
+            List<AiLesson>? parsed = root.ValueKind switch
+            {
+                JsonValueKind.Object when root.TryGetProperty("lessons", out _) =>
+                    JsonSerializer.Deserialize<AiPlanningResponse>(json, JsonOptions)?.Lessons,
+                JsonValueKind.Object =>
+                    [JsonSerializer.Deserialize<AiLesson>(json, JsonOptions)
+                        ?? throw new JsonException("Leere Stunde")],
+                JsonValueKind.Array => JsonSerializer.Deserialize<List<AiLesson>>(json, JsonOptions),
+                _ => null,
+            };
+
+            if (parsed is null || parsed.Count == 0)
+                throw new JsonException("Keine Stunde enthalten");
+            if (parsed.Any(l => string.IsNullOrWhiteSpace(l.Topic)))
+                throw new JsonException("Mindestens einer Stunde fehlt das Feld topic");
+            return parsed;
+        }
+        catch (JsonException ex)
+        {
+            throw new AiBackendException($"Der markierte Text ist noch kein gültiges Stunden-JSON: {ex.Message}");
         }
     }
 
@@ -541,5 +601,9 @@ public class AiPlanningService(HttpClient http, ILessonRepository lessons,
 
     private class LoginResult { public string Token { get; set; } = ""; }
     private class BalanceResult { public decimal BalanceUsd { get; set; } }
-    private class BackendErrorResult { public string? Error { get; set; } }
+    private class BackendErrorResult
+    {
+        public string? Error { get; set; }
+        public string? RawResponse { get; set; }
+    }
 }

LehrerApp.Desktop/ViewModels/Groups/PlanningViewModels.cs

@@ -1491,10 +1491,16 @@ public partial class AiAssistDialogViewModel : ObservableObject
     [ObservableProperty] private string _errorMessage = "";
     [ObservableProperty] private bool _hasResults;
     [ObservableProperty] private string? _summary;
+    [ObservableProperty] private string? _rawResponse;
 
     public string UnitSummary { get; }
     public ObservableCollection<AiLessonReviewItem> ReviewItems { get; } = [];
     public bool Result { get; private set; }
+    public Unit Unit => _unit;
+    public Guid? FocusLessonId => _focusLesson?.Id;
+    public bool CanRescueResponse => !string.IsNullOrWhiteSpace(RawResponse);
+
+    partial void OnRawResponseChanged(string? value) => OnPropertyChanged(nameof(CanRescueResponse));
 
     /// Aus dem Editor einer einzelnen Stunde heraus gestartet (statt aus der Einheiten-Übersicht,
     /// Nutzer-Feedback nach den ersten Live-Tests) — die KI darf dann ausschließlich diese eine
@@ -1533,7 +1539,7 @@ public partial class AiAssistDialogViewModel : ObservableObject
             ? ReviewItems.Where(i => i.Accepted).Select(i => i.Source).ToList()
             : null;
 
-        ErrorMessage = ""; IsBusy = true;
+        ErrorMessage = ""; RawResponse = null; IsBusy = true;
         try
         {
             var response = await _aiPlanning.RequestPlanAsync(_unit, Instruction, token, AllowModifyingExisting,
@@ -1565,7 +1571,11 @@ public partial class AiAssistDialogViewModel : ObservableObject
             Summary = response.Summary;
             HasResults = true;
         }
-        catch (AiBackendException ex) { ErrorMessage = ex.Message; }
+        catch (AiBackendException ex)
+        {
+            ErrorMessage = ex.Message;
+            RawResponse = ex.RawResponse;
+        }
         finally { IsBusy = false; }
     }
 
@@ -1579,6 +1589,132 @@ public partial class AiAssistDialogViewModel : ObservableObject
     }
 
     [RelayCommand] private void Cancel() => Result = false;
+
+    public void MarkRescueImported() => Result = true;
+}
+
+/// <summary>Aus einer manuell geprüften KI-Antwort auswählbare Stunde.</summary>
+public record AiRescueLessonOption(AiLesson Lesson, string Label);
+
+/// <summary>Ziel für den manuellen Import in eine bereits vorhandene Stunde.</summary>
+public record AiRescueTargetOption(Lesson Lesson, string Label);
+
+/// <summary>
+/// Rettungsdialog für syntaktisch fehlerhafte oder mit Freitext vermischte Modellantworten. Der
+/// Nutzer entscheidet selbst, welcher Textabschnitt geparst und wohin die Stunde importiert wird.
+/// </summary>
+public partial class AiResponseRescueDialogViewModel : ObservableObject
+{
+    private readonly AiPlanningService _aiPlanning;
+    private readonly ILessonRepository _lessons;
+    private readonly Unit _unit;
+
+    [ObservableProperty] private string _responseText;
+    [ObservableProperty] private string _parseMessage =
+        "Markiere den gültigen JSON-Abschnitt oder bearbeite den Text und klicke auf „Markierung prüfen“.";
+    [ObservableProperty] private AiRescueLessonOption? _selectedParsedLesson;
+    [ObservableProperty] private AiRescueTargetOption? _selectedTarget;
+
+    public ObservableCollection<AiRescueLessonOption> ParsedLessons { get; } = [];
+    public ObservableCollection<AiRescueTargetOption> ExistingLessons { get; } = [];
+    public bool HasParsedLesson => SelectedParsedLesson is not null;
+    public bool CanImportIntoExisting => SelectedParsedLesson is not null && SelectedTarget is not null;
+    public bool Result { get; private set; }
+
+    partial void OnSelectedParsedLessonChanged(AiRescueLessonOption? value)
+    {
+        OnPropertyChanged(nameof(HasParsedLesson));
+        OnPropertyChanged(nameof(CanImportIntoExisting));
+    }
+
+    partial void OnSelectedTargetChanged(AiRescueTargetOption? value) =>
+        OnPropertyChanged(nameof(CanImportIntoExisting));
+
+    public AiResponseRescueDialogViewModel(AiPlanningService aiPlanning, ILessonRepository lessons,
+        Unit unit, string rawResponse, Guid? preferredTargetId = null)
+    {
+        _aiPlanning = aiPlanning;
+        _lessons = lessons;
+        _unit = unit;
+        _responseText = rawResponse;
+
+        foreach (var lesson in lessons.GetByUnit(unit.Id).OrderBy(l => l.Date).ThenBy(l => l.LessonNumber))
+        {
+            var date = lesson.Date.ToString("dd.MM.yyyy", CultureInfo.InvariantCulture);
+            var number = lesson.LessonNumber is { } n ? $", Stunde {n}" : "";
+            ExistingLessons.Add(new AiRescueTargetOption(lesson, $"{date}{number}: {lesson.Topic}"));
+        }
+
+        SelectedTarget = ExistingLessons.FirstOrDefault(x => x.Lesson.Id == preferredTargetId)
+            ?? ExistingLessons.FirstOrDefault();
+    }
+
+    public void ParseSelection(string selectedText)
+    {
+        ParsedLessons.Clear();
+        SelectedParsedLesson = null;
+        try
+        {
+            var parsed = AiPlanningService.ParsePlanningLessons(selectedText);
+            foreach (var lesson in parsed)
+            {
+                var date = lesson.Date?.ToString("dd.MM.yyyy", CultureInfo.InvariantCulture) ?? "ohne Datum";
+                ParsedLessons.Add(new AiRescueLessonOption(lesson, $"{date}: {lesson.Topic}"));
+            }
+            SelectedParsedLesson = ParsedLessons[0];
+            ParseMessage = parsed.Count == 1
+                ? "Eine gültige Stunde erkannt."
+                : $"{parsed.Count} gültige Stunden erkannt. Bitte die gewünschte Stunde auswählen.";
+        }
+        catch (AiBackendException ex)
+        {
+            ParseMessage = ex.Message;
+        }
+    }
+
+    [RelayCommand]
+    private void ImportIntoExisting()
+    {
+        if (SelectedParsedLesson is null || SelectedTarget is null) return;
+        var lesson = CloneForImport(SelectedParsedLesson.Lesson, SelectedTarget.Lesson.Id);
+        Save([lesson], focusLessonId: SelectedTarget.Lesson.Id);
+    }
+
+    [RelayCommand]
+    private void ImportAsNew()
+    {
+        if (SelectedParsedLesson is null) return;
+        Save([CloneForImport(SelectedParsedLesson.Lesson, null)]);
+    }
+
+    private void Save(List<AiLesson> source, Guid? focusLessonId = null)
+    {
+        foreach (var lesson in _aiPlanning.ApplyResponse(_unit, source,
+                     allowModifyingExistingLessons: true, focusLessonId))
+            _lessons.Save(lesson);
+        Result = true;
+    }
+
+    private static AiLesson CloneForImport(AiLesson source, Guid? id) => new()
+    {
+        Id = id,
+        Date = source.Date,
+        LessonNumber = source.LessonNumber,
+        Topic = source.Topic,
+        StartTime = source.StartTime,
+        Homework = source.Homework,
+        Reflection = source.Reflection,
+        Phases = source.Phases.Select(p => new AiPhaseStep
+        {
+            Name = p.Name,
+            DurationMinutes = p.DurationMinutes,
+            Activity = p.Activity,
+            Material = p.Material,
+            Shorthand = p.Shorthand,
+            AlternativePathName = p.AlternativePathName,
+            MaterialSuggestion = p.MaterialSuggestion,
+        }).ToList(),
+    };
 }
 
 // ── Dialog: Einheit als Vorlage in andere Gruppe kopieren (4.1.4) ────────────

LehrerApp.Desktop/Views/Groups/AiAssistDialog.axaml

@@ -78,8 +78,12 @@
           <TextBlock Text="Anfrage läuft…" FontSize="12" Opacity="0.6"/>
           <ProgressBar IsIndeterminate="True" Height="4"/>
         </StackPanel>
-        <TextBlock Text="{Binding ErrorMessage}" Foreground="Red" FontSize="12" TextWrapping="Wrap"
-                   IsVisible="{Binding ErrorMessage, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"/>
+        <StackPanel Spacing="8" IsVisible="{Binding ErrorMessage, Converter={x:Static StringConverters.IsNotNullOrEmpty}}">
+          <TextBlock Text="{Binding ErrorMessage}" Foreground="Red" FontSize="12" TextWrapping="Wrap"/>
+          <Button Content="🛟 Anfrage retten…" HorizontalAlignment="Left" Click="OnRescue"
+                  IsVisible="{Binding CanRescueResponse}"
+                  ToolTip.Tip="Vollständige KI-Antwort öffnen, JSON markieren oder korrigieren und manuell importieren."/>
+        </StackPanel>
       </StackPanel>
     </ScrollViewer>
 

LehrerApp.Desktop/Views/Groups/AiAssistDialog.axaml.cs

@@ -27,6 +27,22 @@ public partial class AiAssistDialog : Window
             await vm.SendCommand.ExecuteAsync(null);
     }
 
+    private async void OnRescue(object? s, RoutedEventArgs e)
+    {
+        if (DataContext is not AiAssistDialogViewModel { RawResponse: { } raw } vm) return;
+
+        var rescueVm = new AiResponseRescueDialogViewModel(
+            App.Services.GetRequiredService<AiPlanningService>(),
+            App.Services.GetRequiredService<LehrerApp.Core.Interfaces.ILessonRepository>(),
+            vm.Unit, raw, vm.FocusLessonId);
+        var rescue = new AiResponseRescueDialog { DataContext = rescueVm };
+        if (await rescue.ShowDialog<bool>(this))
+        {
+            vm.MarkRescueImported();
+            Close(true);
+        }
+    }
+
     private void OnApply(object? s, RoutedEventArgs e)
     {
         if (DataContext is AiAssistDialogViewModel vm && vm.ApplyCommand.CanExecute(null))

LehrerApp.Desktop/Views/Groups/AiResponseRescueDialog.axaml

@@ -0,0 +1,50 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:vm="clr-namespace:LehrerApp.Desktop.ViewModels.Groups"
+        x:Class="LehrerApp.Desktop.Views.Groups.AiResponseRescueDialog"
+        x:DataType="vm:AiResponseRescueDialogViewModel"
+        Title="KI-Antwort retten"
+        Width="820" Height="720" MinWidth="620" MinHeight="520"
+        CanResize="True" WindowStartupLocation="CenterOwner">
+
+  <Grid RowDefinitions="Auto,*,Auto,Auto,Auto" Margin="24">
+    <StackPanel Grid.Row="0" Spacing="6" Margin="0,0,0,12">
+      <TextBlock Text="KI-Antwort retten" Classes="dialogtitle"/>
+      <TextBlock Text="Die vollständige Antwort steht unten. Markiere ein vollständiges JSON-Objekt, ein Array von Stunden oder die normale Antwort mit dem Feld „lessons“. Du kannst den Text vorher auch korrigieren. Ohne Markierung wird der gesamte Text geprüft."
+                 TextWrapping="Wrap" FontSize="12" Opacity="0.75"/>
+    </StackPanel>
+
+    <TextBox x:Name="ResponseTextBox" Grid.Row="1" Text="{Binding ResponseText}"
+             AcceptsReturn="True" AcceptsTab="True" TextWrapping="NoWrap"
+             FontFamily="Monospace" FontSize="12"
+             ScrollViewer.HorizontalScrollBarVisibility="Auto"
+             ScrollViewer.VerticalScrollBarVisibility="Auto"/>
+
+    <Grid Grid.Row="2" ColumnDefinitions="Auto,*" Margin="0,12,0,0">
+      <Button Grid.Column="0" Content="Markierung prüfen" Click="OnValidateSelection"/>
+      <TextBlock Grid.Column="1" Text="{Binding ParseMessage}" Margin="12,0,0,0"
+                 VerticalAlignment="Center" TextWrapping="Wrap" FontSize="12"/>
+    </Grid>
+
+    <Grid Grid.Row="3" ColumnDefinitions="*,12,*" Margin="0,14,0,0">
+      <StackPanel Grid.Column="0" Spacing="5">
+        <TextBlock Text="Erkannte Stunde" FontSize="12" Opacity="0.7"/>
+        <ComboBox ItemsSource="{Binding ParsedLessons}" SelectedItem="{Binding SelectedParsedLesson}"
+                  DisplayMemberBinding="{Binding Label}" IsEnabled="{Binding HasParsedLesson}"/>
+      </StackPanel>
+      <StackPanel Grid.Column="2" Spacing="5">
+        <TextBlock Text="Vorhandene Zielstunde" FontSize="12" Opacity="0.7"/>
+        <ComboBox ItemsSource="{Binding ExistingLessons}" SelectedItem="{Binding SelectedTarget}"
+                  DisplayMemberBinding="{Binding Label}"/>
+      </StackPanel>
+    </Grid>
+
+    <Grid Grid.Row="4" ColumnDefinitions="Auto,*,Auto,10,Auto" Margin="0,20,0,0">
+      <Button Grid.Column="0" Content="Abbrechen" Click="OnCancel"/>
+      <Button Grid.Column="2" Content="In Zielstunde importieren" Click="OnImportIntoExisting"
+              IsEnabled="{Binding CanImportIntoExisting}"/>
+      <Button Grid.Column="4" Content="Als neue Stunde importieren" Click="OnImportAsNew"
+              IsEnabled="{Binding HasParsedLesson}"/>
+    </Grid>
+  </Grid>
+</Window>

LehrerApp.Desktop/Views/Groups/AiResponseRescueDialog.axaml.cs

@@ -0,0 +1,35 @@
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using LehrerApp.Desktop.ViewModels.Groups;
+
+namespace LehrerApp.Desktop.Views.Groups;
+
+public partial class AiResponseRescueDialog : Window
+{
+    public AiResponseRescueDialog() => InitializeComponent();
+
+    private void OnValidateSelection(object? sender, RoutedEventArgs e)
+    {
+        if (DataContext is not AiResponseRescueDialogViewModel vm) return;
+        var candidate = string.IsNullOrWhiteSpace(ResponseTextBox.SelectedText)
+            ? ResponseTextBox.Text ?? ""
+            : ResponseTextBox.SelectedText;
+        vm.ParseSelection(candidate);
+    }
+
+    private void OnImportIntoExisting(object? sender, RoutedEventArgs e)
+    {
+        if (DataContext is not AiResponseRescueDialogViewModel vm || !vm.CanImportIntoExisting) return;
+        vm.ImportIntoExistingCommand.Execute(null);
+        if (vm.Result) Close(true);
+    }
+
+    private void OnImportAsNew(object? sender, RoutedEventArgs e)
+    {
+        if (DataContext is not AiResponseRescueDialogViewModel vm || !vm.HasParsedLesson) return;
+        vm.ImportAsNewCommand.Execute(null);
+        if (vm.Result) Close(true);
+    }
+
+    private void OnCancel(object? sender, RoutedEventArgs e) => Close(false);
+}