JSON export added

ViewModels/MainWindowViewModel.cs

@@ -1,17 +1,22 @@
-using System.Collections.ObjectModel;
+using System;
+using System.IO;
+using System.Collections.ObjectModel;
 using System.Threading.Tasks;
+using System.Web;
 using Avalonia.Controls;
+using Avalonia.Platform.Storage;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using CommunityToolkit.Mvvm.Messaging;
 using GazpromApp.Messages;
 using GazpromApp.Models;
+using GazpromApp.Utils;
 
 namespace GazpromApp.ViewModels;
 
 public partial class MainWindowViewModel : ViewModelBase
 {
-    public ObservableCollection<PointViewModel> Points { get; } = [];
+    public ObservableCollection<PointViewModel> Points { get; }
 
     [RelayCommand]
     private async Task AddPoint()
@@ -38,6 +43,28 @@ public partial class MainWindowViewModel : ViewModelBase
         
         IsLineVisible = Points.Count > 0;
     }
+
+    [RelayCommand]
+    private void ImportPoint(Window w)
+    {
+        
+    }
+
+    [RelayCommand]
+    private async Task ExportPoint(Window w)
+    {
+        var folder = await w.StorageProvider.OpenFolderPickerAsync(new FolderPickerOpenOptions()
+        {
+            AllowMultiple = false,
+            SuggestedStartLocation =
+                await w.StorageProvider.TryGetFolderFromPathAsync(
+                    Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments))
+        });
+        foreach (var point in Points)
+        {
+            DataSerialization.SavePoint(point.GetPoint(), Path.Combine(HttpUtility.HtmlDecode(folder[0].Path.AbsolutePath), point.Name + ".json") );
+        }
+    }
     
     // Visual properties