feat: add flowing templates and PDF import pipeline

2026-08-31 19:56:25 +02:00
parent 95e3f677e4
commit 3e5f197bdb
19 changed files with 920 additions and 44 deletions
@@ -0,0 +1,89 @@
+using System.Collections.ObjectModel;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Platform.Storage;
+using CommunityToolkit.Mvvm.ComponentModel;
+using LehrerApp.Templating;
+using System.Runtime.Versioning;
+
+namespace LehrerApp.TemplateDesigner;
+
+public partial class PdfImportDialogViewModel : ObservableObject
+{
+    [ObservableProperty] private string _examplePath = "";
+    [ObservableProperty] private string _templatePath = "";
+    [ObservableProperty] private bool _useAi = true;
+    [ObservableProperty] private string _username = "";
+    [ObservableProperty] private string _password = "";
+    [ObservableProperty] private string _status = "Bitte mindestens ein ausgefülltes Beispiel-PDF auswählen.";
+    [ObservableProperty] private bool _isBusy;
+    [ObservableProperty] private bool _hasResult;
+    public ObservableCollection<PdfImportCandidate> Candidates { get; } = [];
+    public IReadOnlyList<PlaceholderType> PlaceholderTypes { get; } =
+        [PlaceholderType.Text, PlaceholderType.Multiline, PlaceholderType.Date, PlaceholderType.Number];
+    public bool CanAnalyze => !IsBusy && File.Exists(ExamplePath) && (!UseAi
+        || (!string.IsNullOrWhiteSpace(Username) && !string.IsNullOrWhiteSpace(Password)));
+    partial void OnExamplePathChanged(string value) => OnPropertyChanged(nameof(CanAnalyze));
+    partial void OnUseAiChanged(bool value) => OnPropertyChanged(nameof(CanAnalyze));
+    partial void OnUsernameChanged(string value) => OnPropertyChanged(nameof(CanAnalyze));
+    partial void OnPasswordChanged(string value) => OnPropertyChanged(nameof(CanAnalyze));
+    partial void OnIsBusyChanged(bool value) => OnPropertyChanged(nameof(CanAnalyze));
+}
+
+[SupportedOSPlatform("windows")]
+[SupportedOSPlatform("linux")]
+[SupportedOSPlatform("macos")]
+public partial class PdfImportDialog : Window
+{
+    private readonly PdfImportDialogViewModel _viewModel = new();
+    private PdfImportResult? _result;
+    public PdfImportResult? Result { get; private set; }
+
+    public PdfImportDialog() { InitializeComponent(); DataContext = _viewModel; }
+
+    private async void OnChooseExample(object? sender, RoutedEventArgs e)
+    {
+        var file = await ChoosePdf("Ausgefülltes Beispiel-PDF auswählen");
+        if (file is not null) _viewModel.ExamplePath = file;
+    }
+
+    private async void OnChooseTemplate(object? sender, RoutedEventArgs e)
+    {
+        var file = await ChoosePdf("Leeres Template-PDF auswählen");
+        if (file is not null) _viewModel.TemplatePath = file;
+    }
+
+    private async Task<string?> ChoosePdf(string title)
+    {
+        var files = await StorageProvider.OpenFilePickerAsync(new()
+        { Title = title, AllowMultiple = false, FileTypeFilter = [new("PDF-Dateien") { Patterns = ["*.pdf"] }] });
+        return files.Count == 0 ? null : files[0].Path.LocalPath;
+    }
+
+    private async void OnAnalyze(object? sender, RoutedEventArgs e)
+    {
+        _viewModel.IsBusy = true; _viewModel.HasResult = false; _viewModel.Status = "PDF wird lokal analysiert …";
+        try
+        {
+            _result = await new PdfImportPipeline().BuildAsync(_viewModel.ExamplePath,
+                string.IsNullOrWhiteSpace(_viewModel.TemplatePath) ? null : _viewModel.TemplatePath,
+                _viewModel.UseAi ? _viewModel.Username : null, _viewModel.UseAi ? _viewModel.Password : null);
+            _viewModel.Candidates.Clear();
+            foreach (var candidate in _result.Candidates) _viewModel.Candidates.Add(candidate);
+            _viewModel.HasResult = true;
+            _viewModel.Status = $"{_viewModel.Candidates.Count} variable Textbereiche erkannt. Bitte Zuordnung prüfen und bestätigen.";
+        }
+        catch (Exception ex) { _viewModel.Status = $"Import fehlgeschlagen: {ex.Message}"; }
+        finally { _viewModel.IsBusy = false; }
+    }
+
+    private void OnAccept(object? sender, RoutedEventArgs e)
+    {
+        if (_result is null) return;
+        var document = new PdfImportPipeline().Extract(_viewModel.ExamplePath);
+        Result = new PdfImportPipeline().BuildResult(_viewModel.ExamplePath, document, _viewModel.Candidates);
+        Close(true);
+    }
+
+    private void OnCancel(object? sender, RoutedEventArgs e) => Close(false);
+}