Hide auth fields / buttons based on server auth settings

LANCommander.Launcher/ViewModels/LoginViewModel.cs

@@ -32,15 +32,18 @@ public partial class LoginViewModel : ViewModelBase
     private string _passwordConfirmation = string.Empty;
 
     [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowPasswordConfirmation))]
     private bool _isRegistering;
 
     [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowRegisterToggle))]
     private bool _allowRegistration = true;
 
     [ObservableProperty]
     private string _statusMessage = string.Empty;
 
     [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowPrimaryButtons))]
     private bool _isLoading;
 
     [ObservableProperty]
@@ -53,10 +56,33 @@ public partial class LoginViewModel : ViewModelBase
     private bool _isServerOffline;
 
     [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowCredentialFields))]
+    [NotifyPropertyChangedFor(nameof(ShowPasswordConfirmation))]
+    [NotifyPropertyChangedFor(nameof(ShowPrimaryButtons))]
+    [NotifyPropertyChangedFor(nameof(ShowRegisterToggle))]
+    [NotifyPropertyChangedFor(nameof(ShowProviderButtons))]
+    [NotifyPropertyChangedFor(nameof(ShowProviderSeparator))]
     private bool _autoRedirectToProvider;
 
     public ObservableCollection<AuthenticationProvider> AuthenticationProviders { get; } = new();
 
+    // When auto-redirect is enabled, the username/password login path is hidden entirely.
+    public bool ShowCredentialFields => !AutoRedirectToProvider;
+
+    public bool ShowPasswordConfirmation => IsRegistering && !AutoRedirectToProvider;
+
+    public bool ShowPrimaryButtons => !IsLoading && !AutoRedirectToProvider;
+
+    public bool ShowRegisterToggle => AllowRegistration && !AutoRedirectToProvider;
+
+    // Hide provider buttons only in the case the launcher auto-redirects (auto-redirect on + exactly one provider).
+    public bool ShowProviderButtons => AutoRedirectToProvider
+        ? AuthenticationProviders.Count > 1
+        : AuthenticationProviders.Count >= 1;
+
+    // The "or" separator only makes sense when both credential fields and provider buttons are shown.
+    public bool ShowProviderSeparator => !AutoRedirectToProvider && ShowProviderButtons;
+
     public event EventHandler? LoginSucceeded;
     public event EventHandler? ChangeServerRequested;
 
@@ -71,6 +97,12 @@ public partial class LoginViewModel : ViewModelBase
         _authenticationClient = authenticationClient;
         _settingsProvider = settingsProvider;
 
+        AuthenticationProviders.CollectionChanged += (_, _) =>
+        {
+            OnPropertyChanged(nameof(ShowProviderButtons));
+            OnPropertyChanged(nameof(ShowProviderSeparator));
+        };
+
         ServerAddress = _connectionClient.GetServerAddress()?.ToString() ?? "Not connected";
     }
 

LANCommander.Launcher/Views/LoginView.axaml

@@ -70,7 +70,7 @@
                     </Border>
                 </Grid>
 
-                <StackPanel Spacing="8">
+                <StackPanel Spacing="8" IsVisible="{Binding ShowCredentialFields}">
                     <TextBlock Text="Username" FontWeight="SemiBold" Foreground="White" />
                     <TextBox x:Name="UsernameTextBox"
                              Watermark="Enter your username"
@@ -83,7 +83,7 @@
                     </TextBox>
                 </StackPanel>
 
-                <StackPanel Spacing="8">
+                <StackPanel Spacing="8" IsVisible="{Binding ShowCredentialFields}">
                     <TextBlock Text="Password" FontWeight="SemiBold" Foreground="White" />
                     <TextBox Watermark="Enter your password"
                              Classes="Glass"
@@ -96,7 +96,7 @@
                     </TextBox>
                 </StackPanel>
 
-                <StackPanel Spacing="8" IsVisible="{Binding IsRegistering}">
+                <StackPanel Spacing="8" IsVisible="{Binding ShowPasswordConfirmation}">
                     <TextBlock Text="Confirm Password" FontWeight="SemiBold" Foreground="White" />
                     <TextBox Watermark="Confirm your password"
                              Classes="Glass"
@@ -109,7 +109,7 @@
                     </TextBox>
                 </StackPanel>
 
-                <Panel IsVisible="{Binding !IsLoading}">
+                <Panel IsVisible="{Binding ShowPrimaryButtons}">
                     <Button Command="{Binding LoginCommand}"
                             HorizontalAlignment="Stretch"
                             HorizontalContentAlignment="Center"
@@ -154,7 +154,7 @@
                         Background="Transparent"
                         BorderThickness="0"
                         Cursor="Hand"
-                        IsVisible="{Binding AllowRegistration}"
+                        IsVisible="{Binding ShowRegisterToggle}"
                         IsEnabled="{Binding !IsLoading}">
                     <Panel>
                         <TextBlock Text="Don't have an account? Register"
@@ -173,8 +173,8 @@
                 </Button>
 
                 <StackPanel IsVisible="{Binding !IsRegistering}" Spacing="12">
-                    <StackPanel IsVisible="{Binding AuthenticationProviders.Count}" Spacing="12">
-                        <Grid ColumnDefinitions="*,Auto,*" Margin="0,4">
+                    <StackPanel IsVisible="{Binding ShowProviderButtons}" Spacing="12">
+                        <Grid ColumnDefinitions="*,Auto,*" Margin="0,4" IsVisible="{Binding ShowProviderSeparator}">
                             <Separator Grid.Column="0" VerticalAlignment="Center" />
                             <TextBlock Grid.Column="1" Text="or" Foreground="White" Opacity="0.5" Margin="12,0" FontSize="12" />
                             <Separator Grid.Column="2" VerticalAlignment="Center" />