Add autostart option

src/InvLock/DataContexts/MainWindowDataContext.cs

@@ -1,13 +1,19 @@
 using CommunityToolkit.Mvvm.Input;
 
+using InvLock.Utilities;
+
 using SharpHook.Native;
 
+using System.ComponentModel;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 
 namespace InvLock.DataContexts;
 
-internal partial class MainWindowDataContext(Func<LockWindow?> lockWindowAccessor)
+internal partial class MainWindowDataContext(Func<LockWindow?> lockWindowAccessor) : INotifyPropertyChanged
 {
+    public event PropertyChangedEventHandler? PropertyChanged;
+
 #if DEBUG
     public string Title => $"{App.AppName} - Dev {AppVersion}";
 #else
@@ -20,6 +26,24 @@ internal partial class MainWindowDataContext(Func<LockWindow?> lockWindowAccesso
 
     public Settings Settings { get; } = Settings.Load();
 
+    public bool IsAutoStartEnabled
+    {
+        get => StartupManager.IsAutoStartEnabled();
+        set
+        {
+            if (value)
+            {
+                _ = StartupManager.EnableAutoStart();
+            }
+            else
+            {
+                _ = StartupManager.DisableAutoStart();
+            }
+
+            OnPropertyChanged();
+        }
+    }
+
     [RelayCommand]
     public async Task RecordLockShortcut()
     {
@@ -55,4 +79,9 @@ internal partial class MainWindowDataContext(Func<LockWindow?> lockWindowAccesso
             Settings.UnlockShortcut = unlockShortcut;
         }
     }
+
+    protected void OnPropertyChanged([CallerMemberName] string? name = null)
+    {
+        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+    }
 }

src/InvLock/InvLock.csproj

@@ -17,9 +17,11 @@
   <ItemGroup>
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageReference Include="CuteUtils" Version="1.0.0" />
+    <PackageReference Include="Interop.IWshRuntimeLibrary" Version="1.0.1" />
     <PackageReference Include="SharpHook" Version="5.3.8" />
     <PackageReference Include="WPF-UI" Version="4.0.0" />
     <PackageReference Include="WPF-UI.Tray" Version="4.0.0" />
+    <PackageReference Include="WpfScreenHelper" Version="2.1.1" />
   </ItemGroup>
     
   <ItemGroup>

src/InvLock/MainWindow.xaml.cs

@@ -71,6 +71,7 @@ public partial class MainWindow : FluentWindow
             e.Cancel = true;
 
             ShowInTaskbar = false;
+            WindowState = WindowState.Minimized;
             Visibility = Visibility.Collapsed;
         }
     }

src/InvLock/Utilities/StartupManager.cs

@@ -0,0 +1,81 @@
+using IWshRuntimeLibrary;
+
+using System.IO;
+using System.Reflection;
+using System.Windows;
+
+namespace InvLock.Utilities;
+
+public enum AutoStartStatus
+{
+    Success = 0,
+    InvalidParameters = 1,
+    AlreadyEnabled = 2,
+    AlreadyDisabled = 3,
+    UnexpectedError = 4
+}
+
+public static class StartupManager
+{
+    private static readonly string appPath = Path.ChangeExtension(Assembly.GetEntryAssembly()?.Location ?? throw new InvalidOperationException("Failed to get the application path."), ".exe");
+    private static readonly string startupFolder = Environment.GetFolderPath(Environment.SpecialFolder.Startup);
+    private static readonly string shortcutPath = Path.Combine(startupFolder, Path.GetFileNameWithoutExtension(appPath) + ".lnk");
+
+    public static bool IsAutoStartEnabled()
+    {
+        return System.IO.File.Exists(shortcutPath);
+    }
+
+    public static AutoStartStatus EnableAutoStart()
+    {
+        if (IsAutoStartEnabled())
+        {
+            return AutoStartStatus.AlreadyEnabled;
+        }
+
+        try
+        {
+            WshShell shell = new WshShell();
+            IWshShortcut shortcut = (IWshShortcut)shell.CreateShortcut(shortcutPath);
+            shortcut.TargetPath = appPath;
+            shortcut.WorkingDirectory = Path.GetDirectoryName(appPath);
+            shortcut.Save();
+            return AutoStartStatus.Success;
+        }
+        catch
+        {
+            return AutoStartStatus.UnexpectedError;
+        }
+    }
+
+    public static AutoStartStatus DisableAutoStart()
+    {
+        if (!IsAutoStartEnabled())
+        {
+            return AutoStartStatus.AlreadyDisabled;
+        }
+
+        try
+        {
+            System.IO.File.Delete(shortcutPath);
+            return AutoStartStatus.Success;
+        }
+        catch
+        {
+            return AutoStartStatus.UnexpectedError;
+        }
+    }
+
+    public static void ToggleAutoStart()
+    {
+        AutoStartStatus status = IsAutoStartEnabled() ? DisableAutoStart() : EnableAutoStart();
+
+        _ = status switch
+        {
+            AutoStartStatus.Success => MessageBox.Show("Auto-start setting changed successfully."),
+            AutoStartStatus.AlreadyEnabled => MessageBox.Show("Auto-start is already enabled."),
+            AutoStartStatus.AlreadyDisabled => MessageBox.Show("Auto-start is already disabled."),
+            _ => MessageBox.Show("Failed to change auto-start setting."),
+        };
+    }
+}