feat: add Post to eBay button and toast to SavedListingsView

EbayListingTool/Views/SavedListingsView.xaml

@@ -318,6 +318,21 @@
 
                     <!-- Action buttons -->
                     <WrapPanel Orientation="Horizontal">
+                        <Button x:Name="PostDraftBtn"
+                                Click="PostDraft_Click"
+                                Style="{StaticResource MahApps.Styles.Button.Square.Accent}"
+                                Height="34" Padding="14,0" Margin="0,0,8,6"
+                                ToolTip="Post this draft to eBay">
+                            <StackPanel Orientation="Horizontal">
+                                <iconPacks:PackIconMaterial x:Name="PostDraftIcon"
+                                    Kind="CartArrowRight" Width="14" Height="14"
+                                    Margin="0,0,6,0" VerticalAlignment="Center"/>
+                                <mah:ProgressRing x:Name="PostDraftSpinner"
+                                    Width="14" Height="14" Margin="0,0,6,0"
+                                    Visibility="Collapsed"/>
+                                <TextBlock Text="Post to eBay" VerticalAlignment="Center"/>
+                            </StackPanel>
+                        </Button>
                         <Button Click="EditListing_Click"
                                 Style="{DynamicResource MahApps.Styles.Button.Square.Accent}"
                                 Height="34" Padding="14,0" Margin="0,0,8,6">
@@ -443,5 +458,40 @@
         </ScrollViewer>
 
         </Grid>
+
+    <!-- Draft posted toast -->
+    <Border x:Name="DraftPostedToast"
+            Grid.Column="2"
+            Visibility="Collapsed"
+            VerticalAlignment="Bottom"
+            Margin="12" Padding="14,10"
+            CornerRadius="6"
+            Background="{DynamicResource MahApps.Brushes.Gray8}"
+            BorderThickness="0,0,0,3"
+            BorderBrush="{DynamicResource MahApps.Brushes.Accent}"
+            Panel.ZIndex="10">
+        <Border.RenderTransform>
+            <TranslateTransform x:Name="ToastTranslate" Y="60"/>
+        </Border.RenderTransform>
+        <Grid>
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="Auto"/>
+            </Grid.ColumnDefinitions>
+            <iconPacks:PackIconMaterial Kind="CheckCircleOutline"
+                Width="16" Height="16" Margin="0,0,10,0"
+                Foreground="{DynamicResource MahApps.Brushes.Accent}"
+                VerticalAlignment="Center"/>
+            <TextBlock x:Name="ToastUrlText" Grid.Column="1"
+                       VerticalAlignment="Center" TextTrimming="CharacterEllipsis"
+                       Foreground="{DynamicResource MahApps.Brushes.Gray1}" FontSize="12"/>
+            <Button Grid.Column="2" Content="✕" Width="20" Height="20"
+                    BorderThickness="0" Background="Transparent"
+                    Foreground="{DynamicResource MahApps.Brushes.Gray5}"
+                    Click="DismissToast_Click" Margin="8,0,0,0"/>
+        </Grid>
+    </Border>
+
     </Grid>
 </UserControl>

EbayListingTool/Views/SavedListingsView.xaml.cs

@@ -4,6 +4,7 @@ using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
 using System.Windows.Media.Imaging;
+using System.Windows.Threading;
 using EbayListingTool.Models;
 using EbayListingTool.Services;
 using Microsoft.Win32;
@@ -14,6 +15,8 @@ public partial class SavedListingsView : UserControl
 {
     private SavedListingsService? _service;
     private PriceLookupService?   _priceLookup;
+    private EbayListingService?   _ebayListing;
+    private EbayAuthService?      _ebayAuth;
     private SavedListing?         _selected;
 
     // Edit mode working state
@@ -34,10 +37,15 @@ public partial class SavedListingsView : UserControl
         };
     }
 
-    public void Initialise(SavedListingsService service, PriceLookupService? priceLookup = null)
+    public void Initialise(SavedListingsService service,
+                           PriceLookupService? priceLookup = null,
+                           EbayListingService? ebayListing = null,
+                           EbayAuthService? ebayAuth = null)
     {
-        _service     = service;
+        _service      = service;
-        _priceLookup = priceLookup;
+        _priceLookup  = priceLookup;
+        _ebayListing  = ebayListing;
+        _ebayAuth     = ebayAuth;
         RefreshList();
     }
 
@@ -753,4 +761,87 @@ public partial class SavedListingsView : UserControl
         ClearDetail();
         RefreshList();
     }
+
+    private async void PostDraft_Click(object sender, RoutedEventArgs e)
+    {
+        if (_selected == null || _ebayListing == null || _ebayAuth == null) return;
+        if (!_ebayAuth.IsConnected)
+        {
+            MessageBox.Show("Please connect to eBay first.", "Not Connected",
+                MessageBoxButton.OK, MessageBoxImage.Warning);
+            return;
+        }
+
+        SetPostDraftBusy(true);
+        try
+        {
+            var draft = _selected.ToListingDraft();
+            var url = await _ebayListing.PostListingAsync(draft);
+
+            ToastUrlText.Text = url;
+            ShowDraftPostedToast();
+
+            var posted = _selected;
+            _selected = null;
+            _service?.Delete(posted);
+            ClearDetail();
+            RefreshList();
+        }
+        catch (Exception ex)
+        {
+            MessageBox.Show($"Failed to post listing:\n\n{ex.Message}", "Post Failed",
+                MessageBoxButton.OK, MessageBoxImage.Warning);
+        }
+        finally
+        {
+            SetPostDraftBusy(false);
+        }
+    }
+
+    private void SetPostDraftBusy(bool busy)
+    {
+        PostDraftBtn.IsEnabled      = !busy;
+        PostDraftIcon.Visibility    = busy ? Visibility.Collapsed : Visibility.Visible;
+        PostDraftSpinner.Visibility = busy ? Visibility.Visible   : Visibility.Collapsed;
+        IsEnabled                   = !busy;
+    }
+
+    private DispatcherTimer? _toastTimer;
+
+    private void ShowDraftPostedToast()
+    {
+        _toastTimer?.Stop();
+        ToastTranslate.BeginAnimation(System.Windows.Media.TranslateTransform.YProperty, null);
+        DraftPostedToast.Visibility = Visibility.Visible;
+
+        var slideIn = new System.Windows.Media.Animation.DoubleAnimation(
+            60, 0, new Duration(TimeSpan.FromMilliseconds(220)))
+        {
+            EasingFunction = new System.Windows.Media.Animation.CubicEase
+                { EasingMode = System.Windows.Media.Animation.EasingMode.EaseOut }
+        };
+        slideIn.Completed += (_, _) =>
+        {
+            _toastTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(8) };
+            _toastTimer.Tick += (_, _) => DismissToastAnimated();
+            _toastTimer.Start();
+        };
+        ToastTranslate.BeginAnimation(System.Windows.Media.TranslateTransform.YProperty, slideIn);
+    }
+
+    private void DismissToast_Click(object sender, RoutedEventArgs e)
+        => DismissToastAnimated();
+
+    private void DismissToastAnimated()
+    {
+        _toastTimer?.Stop();
+        var slideOut = new System.Windows.Media.Animation.DoubleAnimation(
+            0, 60, new Duration(TimeSpan.FromMilliseconds(180)))
+        {
+            EasingFunction = new System.Windows.Media.Animation.CubicEase
+                { EasingMode = System.Windows.Media.Animation.EasingMode.EaseIn }
+        };
+        slideOut.Completed += (_, _) => DraftPostedToast.Visibility = Visibility.Collapsed;
+        ToastTranslate.BeginAnimation(System.Windows.Media.TranslateTransform.YProperty, slideOut);
+    }
 }