Add persistent disk storage.

Author: aiguoli

SimpleList/App.xaml.cs

@@ -7,9 +7,6 @@
 using System;
 using System.Reflection;
 
-// To learn more about WinUI, the WinUI project structure,
-// and more about our project templates, see: http://aka.ms/winui-project-info.
-
 namespace SimpleList
 {
     /// <summary>

SimpleList/Pages/CloudPage.xaml.cs

@@ -3,24 +3,21 @@
 using SimpleList.ViewModels;
 using SimpleList.Views;
 using System;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using Windows.ApplicationModel.DataTransfer;
-using Windows.Storage;
-using CommunityToolkit.Mvvm.DependencyInjection;
-using System.Linq;
-using System.Threading.Tasks;
-using Windows.System;
-using SimpleList.Models;
+using System.Diagnostics.CodeAnalysis;
 
 namespace SimpleList.Pages
 {
     public sealed partial class CloudPage : Page
     {
+        [RequiresUnreferencedCode("Calls System.Text.Json.JsonSerializer.Serialize<TValue>(TValue, JsonSerializerOptions)")]
         public CloudPage()
         {
             InitializeComponent();
             DataContext = new CloudViewModel();
+            Loaded += async (sender, args) =>
+            {
+                await (DataContext as CloudViewModel).LoadDrivesFromDisk();
+            };
         }
 
         private async void ShowCreateDriveDialogAsync(object sender, RoutedEventArgs e)

SimpleList/SimpleList.csproj

@@ -28,7 +28,7 @@
 	<AssemblyName>SimpleList</AssemblyName>
 	<Authors>Thawne</Authors>
 	<PackageProjectUrl>https://github.com/aiguoli/SimpleList</PackageProjectUrl>
-	<AssemblyVersion>1.11.1</AssemblyVersion>
+	<AssemblyVersion>1.11.2</AssemblyVersion>
 	<ApplicationIcon>Assets\favicon.ico</ApplicationIcon>
 	<PackageIcon>128.png</PackageIcon>
 	<AllowUnsafeBlocks>true</AllowUnsafeBlocks>  

SimpleList/ViewModels/CloudViewModel.cs

@@ -1,13 +1,22 @@
 using CommunityToolkit.Mvvm.ComponentModel;
 using System.Collections.ObjectModel;
+using System.Diagnostics.CodeAnalysis;
+using System.IO;
 using System.Linq;
+using System.Text.Json;
+using System.Threading.Tasks;
 
 namespace SimpleList.ViewModels
 {
     public partial class CloudViewModel : ObservableObject
     {
+        [RequiresUnreferencedCode("Calls System.Text.Json.JsonSerializer.Serialize<TValue>(TValue, JsonSerializerOptions)")]
         public CloudViewModel()
         {
+            Drives.CollectionChanged += async (sender, args) =>
+            {
+                await SaveDrivesToDisk();
+            };
         }
 
         public void AddDrive(DriveViewModel drive)
@@ -20,6 +29,30 @@ public DriveViewModel GetDrive(string name)
             return Drives.FirstOrDefault(d => d.DisplayName == name);
         }
 
-        public ObservableCollection<DriveViewModel> Drives { get; set; } = new();
+        [RequiresUnreferencedCode("Calls System.Text.Json.JsonSerializer.Serialize<TValue>(TValue, JsonSerializerOptions)")]
+        private async Task SaveDrivesToDisk()
+        {
+            string jsonData = JsonSerializer.Serialize(Drives);
+            string cachePath = Path.Combine(Directory.GetCurrentDirectory(), "cache");
+            Directory.CreateDirectory(cachePath);
+            await File.WriteAllTextAsync(Path.Combine(cachePath, "drives.json"), jsonData);
+        }
+
+        [RequiresUnreferencedCode("Calls System.Text.Json.JsonSerializer.Deserialize<TValue>(String, JsonSerializerOptions)")]
+        public async Task LoadDrivesFromDisk()
+        {
+            if (File.Exists(cacheFilePath))
+            {
+                string jsonData = await File.ReadAllTextAsync(cacheFilePath);
+                ObservableCollection<DriveViewModel> drives = JsonSerializer.Deserialize<ObservableCollection<DriveViewModel>>(jsonData);
+                foreach (DriveViewModel drive in drives)
+                {
+                    Drives.Add(drive);
+                }
+            }
+        }
+
+        private string cacheFilePath = Path.Combine(Directory.GetCurrentDirectory(), "cache", "drives.json");
+        [ObservableProperty] private ObservableCollection<DriveViewModel> drives = new();
     }
 }