Navigation and DI

src/PostIt/Directory.Packages.props

@@ -1,7 +1,6 @@
 <Project>
   <!-- Pull in shared package versions from the repository root. -->
   <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Packages.props', '$(MSBuildThisFileDirectory)../'))" />
-
   <!-- PostIt-product-specific versions -->
   <ItemGroup>
     <PackageVersion Include="Avalonia" Version="12.0.4" />
@@ -13,6 +12,7 @@
     <PackageVersion Include="Avalonia.Themes.Fluent" Version="12.0.4" />
     <PackageVersion Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.2" />
     <PackageVersion Include="CommunityToolkit.Mvvm" Version="8.4.2" />
+    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="10.0.9" />
     <PackageVersion Include="Xamarin.AndroidX.Browser" Version="1.8.0" />
     <PackageVersion Include="Xamarin.AndroidX.Core.SplashScreen" Version="1.2.0" />
   </ItemGroup>

src/PostIt/PostIt/App.axaml.cs

@@ -1,8 +1,11 @@
 using System;
 using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
 using Avalonia;
+using Avalonia.Controls;
 using Avalonia.Controls.ApplicationLifetimes;
 using Avalonia.Markup.Xaml;
+using Microsoft.Extensions.DependencyInjection;
 using PostIt.Services;
 using PostIt.ViewModels;
 using PostIt.Views;
@@ -22,49 +25,52 @@ public partial class App : Application
 
     public override void OnFrameworkInitializationCompleted()
     {
-        // Single-instance hand-off: if we were launched with a
-        // custom-scheme URL on the command line, we are a 2nd
-        // instance whose job is to forward the OAuth2 callback
-        // URL to the running PostIt process and exit. The first
-        // instance is parked inside CustomSchemeBrowser.InvokeAsync
-        // waiting on the named pipe for exactly this message.
-        if (TryHandOffCustomSchemeUrl())
-        {
-            return;
-        }
+        if (TryHandOffCustomSchemeUrl()) return;
+
         var settings = new Settings();
-        // Synchronous: Settings.Load is intentionally non-async so we
-        // don't deadlock the Avalonia UI thread. .Wait() on an async
-        // method would block here forever on the await inside the
-        // file read.
         settings.Load();
 
         var tokenStore = new TokenStore(System.IO.Path.Combine(
             System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData),
             "PostIt", "tokens.json"));
-        var client = new BlogApiClient(new YavscApiClient(settings, tokenStore));
+
+        var api = new YavscApiClient(settings, tokenStore);
+        var client = new BlogApiClient(api);
+
+        // Configure DI
+        var services = new ServiceCollection();
+
+        // Vues
+        services.AddTransient<MainPage>();
+        services.AddTransient<LoginPage>();
+        services.AddTransient<SettingsPage>();
+        services.AddTransient<HomePage>();
+
+        // ViewModels
+        services.AddSingleton(settings);
+        services.AddSingleton(api);
+        services.AddSingleton(client);
+        services.AddTransient<MainPageViewModel>();
+        services.AddTransient<SettingsPageViewModel>();
+        services.AddTransient<LoginPageViewModel>();
+        services.AddTransient<HomePageViewModel>();
+        var provider = services.BuildServiceProvider();
+
+        // Injecter le ViewLocator avec le provider
+        DataTemplates.Clear();
+        DataTemplates.Add(new ViewLocator(provider));
+
+        // Page de départ
+        var homeVm = provider.GetRequiredService<HomePageViewModel>();
+
         if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
         {
-            desktop.MainWindow = new MainWindow
-            {
-                DataContext = new MainPageViewModel(client, settings)
-            };
+            desktop.MainWindow = new MainWindow { DataContext = homeVm };
         }
-        else if (ApplicationLifetime is IActivityApplicationLifetime singleViewFactoryApplicationLifetime)
+        else if (ApplicationLifetime is ISingleViewApplicationLifetime singleView)
         {
-            singleViewFactoryApplicationLifetime.MainViewFactory = () =>
-            {
-                return new MainPage { DataContext = new MainPageViewModel(client, settings) };
-            };
+            singleView.MainView = new MainWindow { DataContext = homeVm };
         }
-        else if (ApplicationLifetime is ISingleViewApplicationLifetime singleViewPlatform)
-        {
-            singleViewPlatform.MainView = new MainPage
-            {
-                DataContext = new MainPageViewModel(client, settings)
-            };
-        }
-
     }
 
     private bool TryHandOffCustomSchemeUrl()

src/PostIt/PostIt/PostIt.csproj

@@ -19,6 +19,7 @@
     </PackageReference>
     <PackageReference Include="CommunityToolkit.Mvvm" />
     <PackageReference Include="IdentityModel.OidcClient" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
     <ProjectReference Include="../../Yavsc.Abstract/Yavsc.Abstract.csproj" />
   </ItemGroup>
   <ItemGroup>

src/PostIt/PostIt/ViewLocator.cs

@@ -28,6 +28,7 @@ public class ViewLocator : IDataTemplate
             MainPageViewModel => _services.GetRequiredService<MainPage>(),
             SettingsPageViewModel => _services.GetRequiredService<SettingsPage>(),
             LoginPageViewModel => _services.GetRequiredService<LoginPage>(),
+            HomePageViewModel => _services.GetRequiredService<HomePage>(),
         _ => new TextBlock { Text = $"No view for {data.GetType().Name}" }
         };
     }

src/PostIt/PostIt/ViewModels/HomePageViewModel.cs

@@ -1,15 +1,28 @@
-
-namespace PostIt.ViewModels;
+using PostIt;
+using PostIt.Services;
+using PostIt.ViewModels;
 
 public class HomePageViewModel : ViewModelBase
 {
+    public YavscApiClient Api { get; }
+    public Settings Settings { get; }
+
     private string _welcomeText = "Welcome to PostIt!";
     public string WelcomeText
     {
         get => _welcomeText;
         set => SetProperty(ref _welcomeText, value);
     }
+
     public override bool CanNavigateNext { get => true; protected set => throw new System.NotImplementedException(); }
     public override bool CanNavigatePrevious { get => false; protected set => throw new System.NotImplementedException(); }
 
+    public HomePageViewModel(YavscApiClient api, Settings settings)
+    {
+        Api = api;
+        Settings = settings;
+    }
+
+    // Constructeur sans arg pour le designer Avalonia
+    public HomePageViewModel() : this(null!, null!) { }
 }

src/PostIt/PostIt/ViewModels/LoginPageViewModel.cs

@@ -111,6 +111,10 @@ public partial class LoginPageViewModel : ViewModelBase
         private set => this.SetProperty(ref _isBusy, value);
     }
 
+    private bool _LoginSuccess;
+    public bool LoginSuccess { get => _isBusy;
+        private set => this.SetProperty(ref _LoginSuccess, value); }
+
     /// <summary>
     /// Optional override used by tests. When set, this factory is called
     /// instead of <see cref="Platform.CreateBrowser"/> to obtain the
@@ -132,6 +136,7 @@ public partial class LoginPageViewModel : ViewModelBase
     /// constructing a fresh one.
     /// </summary>
     public YavscApiClient? ApiClientOverride { get; set; }
+    public Action LoginSucceeded { get; internal set; }
 
     private YavscApiClient? _api;
 
@@ -171,7 +176,7 @@ public partial class LoginPageViewModel : ViewModelBase
         try
         {
             IsBusy = true;
-
+            LoginSuccess = false;
             if (SettingsLoadOverride is not null)
                 await SettingsLoadOverride().ConfigureAwait(false);
             else
@@ -222,6 +227,8 @@ public partial class LoginPageViewModel : ViewModelBase
             IsBusy = false;
             AccessToken = _api.CurrentAccessToken;
             StatusMessage = "Interactive token acquired.";
+            LoginSuccess = true;
+            LoginSucceeded?.Invoke();
         }
         catch (Exception ex)
         {

src/PostIt/PostIt/Views/HomePage.axaml.cs

@@ -1,8 +1,8 @@
 
-using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
-using System.Threading.Tasks;
+using PostIt.Services;
+using PostIt.ViewModels;
 
 namespace PostIt.Views;
 
@@ -13,11 +13,18 @@ public partial class HomePage : ContentPage
         InitializeComponent();
     }
 
-     private async void OnLoginClick(object? sender, RoutedEventArgs e)
+    private void OnLoginClick(object? sender, RoutedEventArgs e)
     {
-        if (Navigation is not null)
-        
-            await Navigation.PushModalAsync(new LoginPage());
+        var vm = (HomePageViewModel)DataContext!;
+        var loginVm = new LoginPageViewModel(vm.Settings, apiClient: vm.Api);
+        loginVm.LoginSucceeded += () =>
+        {
+            var client = new BlogApiClient(vm.Api);
+            Navigation?.PushAsync(new MainPage
+            {
+                DataContext = new MainPageViewModel(client, vm.Settings)
+            });
+        };
+        Navigation?.PushAsync(new LoginPage { DataContext = loginVm });
     }
-
 }

src/Yavsc.Org/Extensions/HostingExtensions.cs

@@ -19,20 +19,15 @@ using Microsoft.AspNetCore.Localization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.Razor;
 using Microsoft.EntityFrameworkCore;
-using Microsoft.Extensions.Configuration;
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.FileProviders;
-using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Org.BouncyCastle.Crypto;
 using Org.BouncyCastle.Crypto.Parameters;
 using Org.BouncyCastle.OpenSsl;
 using Microsoft.IdentityModel.Tokens;
 using Org.BouncyCastle.Security;
-using Microsoft.Extensions.FileProviders;
 using Microsoft.Extensions.Localization;
-using Microsoft.Extensions.Options;
 using Microsoft.Net.Http.Headers;
 using Newtonsoft.Json;
 using Yavsc.Helpers;
@@ -44,7 +39,6 @@ using Yavsc.Services;
 using Yavsc.Services.Kyc;
 using Yavsc.Settings;
 using Yavsc.ViewModels.Auth;
-using static IdentityServer8.IdentityServerConstants;
 using IdentityServer8.Models;
 using IdentityServer8.EntityFramework.Mappers;
 
@@ -302,6 +296,7 @@ public static class HostingExtensions
 
              // see https://IdentityServer8.readthedocs.io/en/latest/topics/resources.html
              options.EmitStaticAudienceClaim = true;
+             options.UserInteraction.LoginUrl = "/signin";
 
          })
             .AddAspNetIdentity<ApplicationUser>()

src/Yavsc.Web/Program.cs

@@ -50,6 +50,7 @@ builder.Services
         options.ClaimActions.MapUniqueJsonKey("preferred_username", "preferred_username");
         options.ClaimActions.MapUniqueJsonKey("gender", "gender");
         options.SaveTokens = true;
+
     });
 
 using (var app = builder.Build())