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feat: encrypted seed export to Nostr + Blossom (WalletExport) #894

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feat: encrypted seed export to Nostr + Blossom (WalletExport) #894

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1 change: 1 addition & 0 deletions src/Directory.Packages.props
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Expand Up @@ -51,6 +51,7 @@
<PackageVersion Include="Serilog.Sinks.File" Version="7.0.0" />
<PackageVersion Include="Serilog.Sinks.XUnit" Version="3.0.19" />
<PackageVersion Include="System.Security.Cryptography.ProtectedData" Version="6.0.0" />
<PackageVersion Include="Konscious.Security.Cryptography.Argon2" Version="1.3.1" />
<PackageVersion Include="Xamarin.AndroidX.Core.SplashScreen" Version="1.0.1.15" />
<PackageVersion Include="Zafiro" Version="47.0.2" />
<PackageVersion Include="Zafiro.Avalonia" Version="50.0.1" />
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1 change: 1 addition & 0 deletions src/avalonia/AngorApp/Composition/CompositionRoot.cs
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Expand Up @@ -54,6 +54,7 @@ public static IShellViewModel CreateMainViewModel(Control topLevelView, string p
.AddUIServices(topLevelView, profileContext, applicationStorage);

services.AddSecurityContext();
services.AddCloudBackup();
RegisterWalletServices(services, logger, network);
FundingContextServices.Register(services, logger);

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20 changes: 20 additions & 0 deletions src/avalonia/AngorApp/Composition/Registrations/Services/CloudBackup.cs
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@@ -0,0 +1,20 @@
using Angor.Sdk.WalletExport;
using Angor.Sdk.WalletExport.Blossom;
using Microsoft.Extensions.DependencyInjection;

namespace AngorApp.Composition.Registrations.Services;

/// <summary>
/// Wires the encrypted-seed cloud-backup feature (NIP-44 outer + AES-GCM inner, Argon2id KDF, Blossom blobs).
/// </summary>
public static class CloudBackup
{
public static IServiceCollection AddCloudBackup(this IServiceCollection services)
{
services.AddSingleton<IBackupBlossomClient, BackupBlossomClient>();
services.AddSingleton<ICloudBackupService, CloudBackupService>();
services.AddSingleton<IBackupRecoveryService, BackupRecoveryService>();
services.AddSingleton<IWalletCloudBackupService, WalletCloudBackupService>();
return services;
}
}
6 changes: 6 additions & 0 deletions src/design/App/Composition/CompositionRoot.cs
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Expand Up @@ -158,6 +158,12 @@ public static IServiceProvider BuildServiceProvider(string profileName = "Defaul
services.AddSingleton<BlossomUploadService>();
services.AddSingleton<ILogExportService, LogExportService>();

// Cloud seed-backup feature (NIP-44 outer + AES-GCM inner over Blossom blobs)
services.AddSingleton<Angor.Sdk.WalletExport.Blossom.IBackupBlossomClient, Angor.Sdk.WalletExport.Blossom.BackupBlossomClient>();
services.AddSingleton<Angor.Sdk.WalletExport.ICloudBackupService, Angor.Sdk.WalletExport.CloudBackupService>();
services.AddSingleton<Angor.Sdk.WalletExport.IBackupRecoveryService, Angor.Sdk.WalletExport.BackupRecoveryService>();
services.AddSingleton<Angor.Sdk.WalletExport.IWalletCloudBackupService, Angor.Sdk.WalletExport.WalletCloudBackupService>();

// ── Shared singletons (replaces SharedViewModels static class) ──
services.AddSingleton<SignatureStore>();
services.AddSingleton<PrototypeSettings>();
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130 changes: 130 additions & 0 deletions src/design/App/UI/Sections/Settings/SettingsView.axaml
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Expand Up @@ -603,6 +603,136 @@
</StackPanel>
</Border>

<!-- ═══ 6b. Cloud Backup ═══ -->
<Border Background="{DynamicResource CardSurface}"
BorderBrush="{DynamicResource Stroke}"
BorderThickness="1"
CornerRadius="16"
ClipToBounds="True"
BoxShadow="{DynamicResource ItemShadow}">
<StackPanel>
<Border Background="{DynamicResource SurfaceHigh}"
CornerRadius="15,15,0,0"
BorderBrush="{DynamicResource Stroke}"
BorderThickness="0,0,0,1"
Padding="24,20">
<StackPanel Orientation="Horizontal" Spacing="12">
<i:Icon Value="fa-solid fa-cloud-arrow-up"
FontSize="20"
Foreground="{DynamicResource PrimaryGreenBrush}" />
<TextBlock Text="Cloud Backup"
FontSize="18"
FontWeight="Bold"
Foreground="{DynamicResource TextStrong}"
VerticalAlignment="Center" />
</StackPanel>
</Border>
<Border Padding="24">
<StackPanel Spacing="16">
<TextBlock Text="Encrypt your seed with a Recovery Passphrase and store it on Nostr + Blossom servers. Recover on any device with just the passphrase."
FontSize="14"
Foreground="{DynamicResource TextMuted}"
TextWrapping="Wrap" />

<!-- Disabled state -->
<StackPanel IsVisible="{Binding !IsCloudBackupEnabled}" Spacing="12">
<TextBlock Text="Cloud backup is not set up for this wallet."
FontSize="14"
Foreground="{DynamicResource TextMuted}" />
<Button Name="BtnEnableCloudBackup"
Click="OnEnableCloudBackupClick"
HorizontalAlignment="Left"
Padding="20,14"
Background="{DynamicResource GreenGradient}"
Foreground="White"
BorderThickness="0"
CornerRadius="8"
FontWeight="SemiBold"
FontSize="14"
Cursor="Hand"
IsEnabled="{Binding !IsCloudBackupBusy}">
<StackPanel Orientation="Horizontal" Spacing="8">
<i:Icon Value="fa-solid fa-shield-halved" FontSize="16" Foreground="White" />
<TextBlock Text="Set up Cloud Backup" VerticalAlignment="Center" />
</StackPanel>
</Button>
</StackPanel>

<!-- Enabled state -->
<StackPanel IsVisible="{Binding IsCloudBackupEnabled}" Spacing="12">
<Border Background="{DynamicResource CreateWalletSeedBg}"
BorderBrush="{DynamicResource CreateWalletSeedBorder}"
BorderThickness="1"
CornerRadius="8"
Padding="16">
<StackPanel Spacing="6">
<TextBlock Text="Backup active" FontWeight="SemiBold" FontSize="14" Foreground="{DynamicResource TextStrong}" />
<TextBlock Text="{Binding CloudBackupBlobSha256, StringFormat='Blob hash: {0}'}"
FontFamily="Cascadia Mono, Consolas, monospace"
FontSize="11"
Foreground="{DynamicResource TextMuted}"
TextWrapping="Wrap" />
<TextBlock FontSize="12" Foreground="{DynamicResource TextMuted}">
<Run Text="Reachable on" />
<Run Text="{Binding CloudBackupServersHealthy}" />
<Run Text="/" />
<Run Text="{Binding CloudBackupServersTotal}" />
<Run Text="Blossom servers" />
</TextBlock>
</StackPanel>
</Border>

<StackPanel Orientation="Horizontal" Spacing="8">
<Button Click="OnVerifyCloudBackupClick"
Padding="16,10"
Background="{DynamicResource SurfaceHigh}"
Foreground="{DynamicResource TextStrong}"
BorderBrush="{DynamicResource Stroke}"
BorderThickness="1"
CornerRadius="8"
FontSize="13"
Cursor="Hand"
IsEnabled="{Binding !IsCloudBackupBusy}">
<TextBlock Text="Verify Health" />
</Button>
<Button Click="OnRefreshCloudBackupClick"
Padding="16,10"
Background="{DynamicResource SurfaceHigh}"
Foreground="{DynamicResource TextStrong}"
BorderBrush="{DynamicResource Stroke}"
BorderThickness="1"
CornerRadius="8"
FontSize="13"
Cursor="Hand"
IsEnabled="{Binding !IsCloudBackupBusy}">
<TextBlock Text="Refresh Backup" />
</Button>
<Button Click="OnDisableCloudBackupClick"
Padding="16,10"
Background="Transparent"
Foreground="{DynamicResource TextMuted}"
BorderBrush="{DynamicResource Stroke}"
BorderThickness="1"
CornerRadius="8"
FontSize="13"
Cursor="Hand"
IsEnabled="{Binding !IsCloudBackupBusy}">
<TextBlock Text="Disable" />
</Button>
</StackPanel>
</StackPanel>

<!-- Status line -->
<TextBlock IsVisible="{Binding CloudBackupStatusMessage, Converter={x:Static ObjectConverters.IsNotNull}}"
Text="{Binding CloudBackupStatusMessage}"
FontSize="12"
Foreground="{DynamicResource TextMuted}"
TextWrapping="Wrap" />
</StackPanel>
</Border>
</StackPanel>
</Border>

<!-- ═══ 7. Debug Mode (testnet only) ═══ -->
<!-- Visible only on testnet networks. Enables debug features like project wizard
data prepopulation and relaxed validation for easier testing. -->
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27 changes: 27 additions & 0 deletions src/design/App/UI/Sections/Settings/SettingsView.axaml.cs
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Expand Up @@ -375,4 +375,31 @@ private void OnModalBackdropPressed(object? sender, PointerPressedEventArgs e) =

private void OnModalContentPressed(object? sender, PointerPressedEventArgs e) =>
e.Handled = true; // Prevent backdrop close when clicking modal content

// ── Cloud Backup (passphrase-entry modal is a follow-up; for now Enable opens a TopLevel dialog) ──
private async void OnEnableCloudBackupClick(object? sender, RoutedEventArgs e)
{
if (Vm == null) return;
// Minimal first-pass: open the enable-backup modal (XAML for the modal still to be added).
// The ViewModel.ConfirmEnableBackupAsync covers the validation + crypto + relay/Blossom calls.
Vm.OpenEnableBackupModal();
}

private async void OnVerifyCloudBackupClick(object? sender, RoutedEventArgs e)
{
try { if (Vm != null) await Vm.VerifyBackupHealthAsync(); }
catch (Exception ex) { _logger.LogWarning(ex, "OnVerifyCloudBackupClick failed"); }
}

private async void OnRefreshCloudBackupClick(object? sender, RoutedEventArgs e)
{
if (Vm == null) return;
Vm.OpenRefreshBackupModal();
}

private async void OnDisableCloudBackupClick(object? sender, RoutedEventArgs e)
{
try { if (Vm != null) await Vm.DisableBackupAsync(); }
catch (Exception ex) { _logger.LogWarning(ex, "OnDisableCloudBackupClick failed"); }
}
}
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