Add designer file menu and package metadata

LehrerApp.TemplateDesigner/DesignerViewModel.cs

@@ -28,6 +28,7 @@ public partial class DesignerViewModel : ObservableObject
     [ObservableProperty] private string _statusColor = "#475569";
     [ObservableProperty] private bool _canExport;
     [ObservableProperty] private DesignerPlaceholder? _selectedPlaceholder;
+    [ObservableProperty] private DesignerMetadata? _selectedMetadata;
     [ObservableProperty] private DesignerAsset? _selectedAsset;
     [ObservableProperty] private StarterTemplateItem? _selectedStarterTemplate;
     [ObservableProperty] private OverlayEditorMode _overlayMode = OverlayEditorMode.Measure;
@@ -50,6 +51,11 @@ public partial class DesignerViewModel : ObservableObject
         new("Brieftext", PlaceholderType.Multiline, true, "hiermit informieren wir Sie über einen wichtigen Termin.\n\nMit freundlichen Grüßen"),
         new("LehrerName", PlaceholderType.Text, true, "M. Mustermann"),
     ];
+    public ObservableCollection<DesignerMetadata> MetadataItems { get; } =
+    [
+        new(TemplateMetadataKeys.Language, "de-DE"),
+        new(TemplateMetadataKeys.ReportType, "letter"),
+    ];
     public Dictionary<string, byte[]> Assets { get; } = new(StringComparer.OrdinalIgnoreCase);
     public ObservableCollection<DesignerAsset> AssetItems { get; } = [];
     public ObservableCollection<StarterTemplateItem> StarterTemplates { get; } = [];
@@ -58,8 +64,16 @@ public partial class DesignerViewModel : ObservableObject
     {
         TemplateId = "neue-vorlage"; TemplateName = "Neue Vorlage"; Description = "";
         PageWidth = 210; PageHeight = 297; Unit = "mm"; LayoutSource = "PAGE 210 297 mm\n";
-        Placeholders.Clear(); Assets.Clear(); AssetItems.Clear(); SelectedAsset = null;
-        PreviewImage = null; CanExport = false;
+        Placeholders.Clear(); SelectedPlaceholder = null;
+        MetadataItems.Clear(); MetadataItems.Add(new(TemplateMetadataKeys.Language, "de-DE"));
+        MetadataItems.Add(new(TemplateMetadataKeys.ReportType, "letter"));
+        SelectedMetadata = null;
+        Assets.Clear(); AssetItems.Clear(); SelectedAsset = null;
+        NewElementType = "TEXT"; NewX = "20"; NewY = "50"; NewWidth = "170"; NewHeight = "30";
+        NewImageScale = "100"; NewContent = "$Brieftext"; NewAttributes = "size=11";
+        PreviewImage?.Dispose(); PreviewImage = null; CanExport = false;
+        OverlayMode = OverlayEditorMode.Measure; OverlayCoordinates = "x=– · y=–";
+        SelectedOverlayElement = "Kein Element ausgewählt";
         SetStatus("Neues Projekt angelegt.", false);
     }
 
@@ -68,6 +82,7 @@ public partial class DesignerViewModel : ObservableObject
         SchemaVersion = TemplateLoader.CurrentSchemaVersion,
         Id = TemplateId.Trim(), Name = TemplateName.Trim(), Description = Description.Trim(),
         PageSize = new((float)PageWidth, (float)PageHeight, Unit), LayoutFile = "layout.tpl",
+        Metadata = BuildMetadata(),
         Placeholders = Placeholders.Select(x => new PlaceholderDefinition(x.Name.Trim(), x.Type, x.Required)).ToList(),
     };
 
@@ -96,6 +111,10 @@ public partial class DesignerViewModel : ObservableObject
         TemplateId = template.Manifest.Id; TemplateName = template.Manifest.Name; Description = template.Manifest.Description;
         PageWidth = (decimal)template.Manifest.PageSize.Width; PageHeight = (decimal)template.Manifest.PageSize.Height;
         Unit = template.Manifest.PageSize.Unit; LayoutSource = layoutSource;
+        MetadataItems.Clear();
+        foreach (var item in template.Manifest.Metadata.OrderBy(x => x.Key, StringComparer.OrdinalIgnoreCase))
+            MetadataItems.Add(new(item.Key, item.Value));
+        SelectedMetadata = null;
         Placeholders.Clear();
         foreach (var placeholder in template.Manifest.Placeholders)
             Placeholders.Add(new(placeholder.Name, placeholder.Type, placeholder.Required, DesignerPlaceholder.SampleFor(placeholder.Type)));
@@ -131,6 +150,19 @@ public partial class DesignerViewModel : ObservableObject
             ?? StarterTemplates.FirstOrDefault();
     }
 
+    private Dictionary<string, string> BuildMetadata()
+    {
+        var result = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        foreach (var item in MetadataItems)
+        {
+            var key = item.Name.Trim(); var value = item.Value.Trim();
+            if (!result.TryAdd(key, value))
+                throw new InvalidDataException($"Metadatenschlüssel „{key}“ ist mehrfach vorhanden.");
+        }
+        TemplateMetadataText.Serialize(result);
+        return result;
+    }
+
     private static ITemplateDataProvider BuildSampleDataProvider(TemplateManifest manifest) =>
         new DesignerDataProvider(manifest.Placeholders.ToDictionary(x => x.Name,
             x => new DesignerPlaceholder(x.Name, x.Type, x.Required, DesignerPlaceholder.SampleFor(x.Type)).ToValue(),
@@ -337,6 +369,12 @@ public partial class DesignerViewModel : ObservableObject
         """;
 }
 
+public partial class DesignerMetadata(string name, string value) : ObservableObject
+{
+    [ObservableProperty] private string _name = name;
+    [ObservableProperty] private string _value = value;
+}
+
 public partial class DesignerAsset(string name, int pixelWidth, int pixelHeight, long byteCount) : ObservableObject
 {
     [ObservableProperty] private int _usageCount;