Added basic login

src/Artemis.UI/Screens/Workshop/CurrentUser/CurrentUserView.axaml

@@ -0,0 +1,59 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:currentUser="clr-namespace:Artemis.UI.Screens.Workshop.CurrentUser"
+             xmlns:avalonia="clr-namespace:Material.Icons.Avalonia;assembly=Material.Icons.Avalonia"
+             xmlns:controls="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             x:Class="Artemis.UI.Screens.Workshop.CurrentUser.CurrentUserView"
+             x:DataType="currentUser:CurrentUserViewModel">
+
+    <Panel>
+        <!-- Signed out -->
+        <Ellipse Height="28" Width="28" IsVisible="{CompiledBinding !IsLoggedIn}">
+            <Ellipse.ContextFlyout>
+                <MenuFlyout>
+                    <MenuItem Header="Login" Command="{CompiledBinding Login}">
+                        <MenuItem.Icon>
+                            <avalonia:MaterialIcon Kind="Login" />
+                        </MenuItem.Icon>
+                    </MenuItem>
+                </MenuFlyout>
+            </Ellipse.ContextFlyout>
+            <Ellipse.Fill>
+                <ImageBrush Source="/Assets/Images/avatar-placeholder.png" />
+            </Ellipse.Fill>
+        </Ellipse>
+
+        <!-- Signed in -->
+        <Ellipse Height="28" Width="28" IsVisible="{CompiledBinding IsLoggedIn}" Name="UserMenu">
+            <Ellipse.ContextFlyout>
+                <Flyout>
+                    <Grid ColumnDefinitions="Auto,*" RowDefinitions="*,*,*" MinWidth="300">
+                        <Ellipse Grid.Column="0" Grid.RowSpan="3" Height="50" Width="50" Margin="0 0 8 0" VerticalAlignment="Top">
+                            <Ellipse.Fill>
+                                <ImageBrush Source="{CompiledBinding Avatar}" />
+                            </Ellipse.Fill>
+                        </Ellipse>
+                        <TextBlock Grid.Column="1" Grid.Row="0" Text="{CompiledBinding Name}" Margin="0 4 0 0"></TextBlock>
+                        <TextBlock Grid.Column="1" Grid.Row="1" Text="{CompiledBinding Email}"></TextBlock>
+                        <controls:HyperlinkButton
+                            Grid.Column="1"
+                            Grid.Row="2"
+                            Margin="-8 0 0 0"
+                            Padding="6 4"
+                            Click="Button_OnClick">
+                            Sign out
+                        </controls:HyperlinkButton>
+                    </Grid>
+                </Flyout>
+            </Ellipse.ContextFlyout>
+            <Ellipse.Fill>
+                <ImageBrush Source="{CompiledBinding Avatar}" />
+            </Ellipse.Fill>
+        </Ellipse>
+    </Panel>
+
+
+</UserControl>

src/Artemis.UI/Screens/Workshop/CurrentUser/CurrentUserView.axaml.cs

@@ -0,0 +1,21 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+using Avalonia.Markup.Xaml;
+using Avalonia.ReactiveUI;
+
+namespace Artemis.UI.Screens.Workshop.CurrentUser;
+
+public partial class CurrentUserView : ReactiveUserControl<CurrentUserViewModel>
+{
+    public CurrentUserView()
+    {
+        InitializeComponent();
+    }
+
+    private void Button_OnClick(object? sender, RoutedEventArgs e)
+    {
+        UserMenu.ContextFlyout?.Hide();
+        ViewModel?.Logout();
+    }
+}

src/Artemis.UI/Screens/Workshop/CurrentUser/CurrentUserViewModel.cs

@@ -0,0 +1,104 @@
+using System;
+using System.Linq;
+using System.Reactive;
+using System.Reactive.Disposables;
+using System.Threading;
+using System.Threading.Tasks;
+using Artemis.UI.Shared;
+using Artemis.WebClient.Workshop.Services;
+using Avalonia.Media.Imaging;
+using Flurl.Http;
+using ReactiveUI;
+
+namespace Artemis.UI.Screens.Workshop.CurrentUser;
+
+public class CurrentUserViewModel : ActivatableViewModelBase
+{
+    private readonly IAuthenticationService _authenticationService;
+    private ObservableAsPropertyHelper<bool>? _isLoggedIn;
+
+    private string? _userId;
+    private string? _name;
+    private string? _email;
+    private Bitmap? _avatar;
+
+    public CurrentUserViewModel(IAuthenticationService authenticationService)
+    {
+        _authenticationService = authenticationService;
+        Login = ReactiveCommand.CreateFromTask(ExecuteLogin);
+
+        this.WhenActivated(d => _isLoggedIn = _authenticationService.WhenAnyValue(s => s.IsLoggedIn).ToProperty(this, vm => vm.IsLoggedIn).DisposeWith(d));
+        this.WhenActivated(d =>
+        {
+            Task.Run(async () =>
+            {
+                await _authenticationService.AutoLogin();
+                await LoadCurrentUser();
+            }).DisposeWith(d);
+        });
+    }
+
+    public void Logout()
+    {
+        _authenticationService.Logout();
+    }
+
+    public string? UserId
+    {
+        get => _userId;
+        set => RaiseAndSetIfChanged(ref _userId, value);
+    }
+
+    public string? Name
+    {
+        get => _name;
+        set => RaiseAndSetIfChanged(ref _name, value);
+    }
+
+    public string? Email
+    {
+        get => _email;
+        set => RaiseAndSetIfChanged(ref _email, value);
+    }
+
+    public Bitmap? Avatar
+    {
+        get => _avatar;
+        set => RaiseAndSetIfChanged(ref _avatar, value);
+    }
+
+    public ReactiveCommand<Unit, Unit> Login { get; }
+    public bool IsLoggedIn => _isLoggedIn?.Value ?? false;
+
+    private async Task ExecuteLogin(CancellationToken cancellationToken)
+    {
+        await _authenticationService.Login();
+        await LoadCurrentUser();
+        Console.WriteLine(_authenticationService.Claims);
+    }
+
+    private async Task LoadCurrentUser()
+    {
+        if (!IsLoggedIn)
+            return;
+
+        UserId = _authenticationService.Claims.FirstOrDefault(c => c.Type == "sub")?.Value;
+        Name = _authenticationService.Claims.FirstOrDefault(c => c.Type == "name")?.Value;
+        Email = _authenticationService.Claims.FirstOrDefault(c => c.Type == "email")?.Value;
+
+        if (UserId != null)
+            await LoadAvatar(UserId);
+    }
+
+    private async Task LoadAvatar(string userId)
+    {
+        try
+        {
+            Avatar = new Bitmap(await $"{IAuthenticationService.AUTHORITY}/user/avatar/{userId}".GetStreamAsync());
+        }
+        catch (Exception)
+        {
+            // ignored
+        }
+    }
+}

src/Artemis.UI/Screens/Workshop/WorkshopView.axaml

@@ -30,6 +30,7 @@
                     </ListBox.ItemTemplate>
                 </ListBox>
             </Border>
+            <ContentControl Grid.Column="1" VerticalAlignment="Top" HorizontalAlignment="Right" Content="{CompiledBinding CurrentUserViewModel}" Margin="8"></ContentControl>
         </Grid>
     </Border>
 </UserControl>

src/Artemis.UI/Screens/Workshop/WorkshopViewModel.cs

@@ -4,6 +4,7 @@ using System.Reactive;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
 using Artemis.Core;
+using Artemis.UI.Screens.Workshop.CurrentUser;
 using Artemis.UI.Shared.Services;
 using Artemis.UI.Shared.Services.Builders;
 using Artemis.WebClient.Workshop;
@@ -18,8 +19,9 @@ public class WorkshopViewModel : MainScreenViewModel
 {
     private readonly IWorkshopClient _workshopClient;
 
-    public WorkshopViewModel(IScreen hostScreen, IWorkshopClient workshopClient) : base(hostScreen, "workshop")
+    public WorkshopViewModel(IScreen hostScreen, IWorkshopClient workshopClient, CurrentUserViewModel currentUserViewModel) : base(hostScreen, "workshop")
     {
+        CurrentUserViewModel = currentUserViewModel;
         _workshopClient = workshopClient;
         DisplayName = "Workshop";
 
@@ -27,7 +29,8 @@ public class WorkshopViewModel : MainScreenViewModel
     }
 
     public ObservableCollection<IGetEntries_Entries_Nodes> Test { get; set; } = new();
-
+    public CurrentUserViewModel CurrentUserViewModel { get; set; }
+    
     private async Task GetEntries()
     {