[feat:] implemented a basic editor for the wiki

Wiki/EditorWindow.axaml.cs

@@ -1,17 +1,59 @@
 using System;
+using System.IO;
 using Avalonia.Controls;
+using Avalonia.Interactivity;
 
 namespace Logof_Client.Wiki;
 
 public partial class EditorWindow : Window
 {
-	private void InitializeComponent()
-	{
-		Avalonia.Markup.Xaml.AvaloniaXamlLoader.Load(this);
-	}
+    public string filename = "";
 
-	public EditorWindow()
-	{
-		InitializeComponent();
-	}
-}
+    public EditorWindow(string filename = "")
+    {
+        InitializeComponent();
+        this.filename = filename;
+        if (!string.IsNullOrWhiteSpace(filename) && File.Exists(filename))
+        {
+            var content = TbContent;
+            if (content != null) content.Text = File.ReadAllText(this.filename);
+            Title = "Wiki Editor - " + filename;
+        }
+        else if (!string.IsNullOrWhiteSpace(filename))
+        {
+            MessageBox.Show(null, "Die Datei existiert nicht", "Fehler");
+            Close();
+        }
+    }
+
+    private void BtnSave_OnClick(object? sender, RoutedEventArgs e)
+    {
+        try
+        {
+            File.WriteAllText(filename, TbContent.Text);
+            MainWindow._instance.PopulateNavTree();
+        }
+        catch (Exception ex)
+        {
+            MessageBox.Show(null,
+                "Es ist ein Fehler aufgetreten. Bitte senden Sie ihn über git.mypapercloud.de/fierke/logofclient ein:\n" +
+                ex.StackTrace, "Fehler");
+        }
+    }
+
+    private void BtnSaveAs_OnClick(object? sender, RoutedEventArgs e)
+    {
+        MessageBox.Show(null,
+            "Feature noch nicht implemetiert.\nErstelle neue Dateien unter " + Global._instance.wiki_storage_path,
+            "Fehler");
+    }
+
+    private async void BtnDelete_OnClick(object? sender, RoutedEventArgs e)
+    {
+        var result = await MessageBox.Show(null, "Sicher?", "Sicher?", MessageBoxButton.YesNo);
+        if (result == MessageBoxResult.No) return;
+        File.Delete(filename);
+        MainWindow._instance.PopulateNavTree();
+        Close();
+    }
+}