feat: 历史界面美化 + 按应用分类

实现两个用户需求:消息内容完整显示、按 Gotify Application 分类。

新增:
- Models/GotifyApplication.cs:对应 GET /application 返回字段(id/name/description/defaultPriority/createdAt/internal)
- Services/ApplicationCache.cs:在内存里缓存 id→Application 映射,提供 GetName/Get 解析,Updated 事件触发 UI 刷新
- Services/GotifyApiService.GetApplicationsAsync:GET /application?limit=999 拉取应用列表
- Converters/ValueConverters.cs:
  - PriorityToBrushConverter:优先级 0/1-4/5-7/8+ 分别用浅灰/灰蓝/橙/红区分
  - AppNameToBrushConverter:对应用名做 FNV-1a 32-bit hash → HSL 色相,让每个应用在历史里视觉上可区分
- GotifyMessage.AppName 字段(JsonIgnore),由 UI 在加入历史前从缓存查后填入

主窗重构(两栏布局):
- 左侧历史列表:用 DataTemplate 自定义每行(优先级徽章 + 应用名彩色 + 标题 + 消息预览 TextWrapping+Trimming),不再用 GridView 单行
- 右侧详情面板:选中消息后显示完整内容(应用名大标题、描述、优先级+说明、时间、标题、App ID、消息正文、URL 链接)
- 顶部状态条:状态点颜色(绿/橙/红/灰)+ 应用数显示(实时更新)
- 新增按钮「刷新应用」,手动 GET /application,用于用户新建 Gotify app 后同步
- URL 链接(如果有)在详情面板显示,点击用默认浏览器打开
- SaveButton 在保存配置后自动重新拉应用列表+历史,不用重启

App.xaml.cs 改造:创建 ApplicationCache,启动时后台异步刷新一次,订阅 Updated 事件让 MainWindow 重新解析已加载消息的 AppName(因为消息先到,缓存可能后到)

Color/Brush/MessageBox 在 WPF+WinForms 双开项目里撞名,ValueConverters 和 MainWindow.xaml.cs 都加 using alias 固定走 WPF。

实测:启动后 ApplicationCache refreshed count=5,WebSocket connected,历史拉了 50 条股票分析报告,通知正常弹。

App.xaml.cs

@@ -16,6 +16,7 @@ public partial class App : Application
     private Services.GotifyApiService? _apiService;
     private Services.GotifyWebSocketService? _webSocketService;
     private Services.NotificationService? _notificationService;
+    private Services.ApplicationCache? _appCache;
     private Tray.TrayIconService? _trayService;
     private MainWindow? _mainWindow;
 
@@ -37,6 +38,7 @@ public partial class App : Application
         _stateService = new Services.StateService(_logger);
         _apiService = new Services.GotifyApiService(config, _logger);
         _notificationService = new Services.NotificationService(config, _logger);
+        _appCache = new Services.ApplicationCache(_apiService, _logger);
 
         try
         {
@@ -74,13 +76,17 @@ public partial class App : Application
             _logger,
             _trayService,
             _webSocketService,
-            _apiService);
+            _apiService,
+            _appCache);
 
         if (config.Startup.Enabled)
         {
             Utils.StartupManager.EnableCurrentUserStartup(_logger);
         }
 
+        // 后台异步拉一次应用列表,不阻塞启动
+        _ = _appCache.RefreshAsync();
+
         await _webSocketService.StartAsync();
     }
 

Converters/ValueConverters.cs

@@ -0,0 +1,78 @@
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+using System.Windows.Media;
+
+// 双开 WPF + WinForms 时,Color 在两个命名空间都有,固定走 WPF 的。
+using Color = System.Windows.Media.Color;
+
+namespace WindowsGotify;
+
+public sealed class PriorityToBrushConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (parameter is string p && p == "hideIfEmpty" && value is string s)
+        {
+            return string.IsNullOrWhiteSpace(s) || s == "(无标题)" ? Visibility.Collapsed : Visibility.Visible;
+        }
+
+        if (value is int p1)
+        {
+            return p1 switch
+            {
+                >= 8 => new SolidColorBrush(Color.FromRgb(0xD1, 0x34, 0x38)),   // 紧急 - 红
+                >= 5 => new SolidColorBrush(Color.FromRgb(0xCA, 0x50, 0x10)),   // 重要 - 橙
+                >= 1 => new SolidColorBrush(Color.FromRgb(0x4A, 0x55, 0x68)),   // 一般 - 灰蓝
+                _ => new SolidColorBrush(Color.FromRgb(0x88, 0x88, 0x88))       // 静默 - 浅灰
+            };
+        }
+        return new SolidColorBrush(Colors.Gray);
+    }
+
+    public object ConvertBack(object value, Type targetType, object? parameter, CultureInfo culture)
+        => throw new NotSupportedException();
+}
+
+/// <summary>
+/// 应用名 → 稳定颜色(用名字的 hash 决定 hue),让每个应用在历史里视觉上可区分。
+/// </summary>
+public sealed class AppNameToBrushConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        var name = value as string ?? "";
+        if (string.IsNullOrWhiteSpace(name)) return new SolidColorBrush(Color.FromRgb(0x55, 0x55, 0x55));
+
+        // 简单 FNV-1a 32-bit hash → hue 0..360
+        uint hash = 2166136261u;
+        foreach (var c in name)
+        {
+            hash ^= c;
+            hash *= 16777619u;
+        }
+        var hue = hash % 360;
+        return new SolidColorBrush(HsvToColor(hue, 0.55, 0.75));
+    }
+
+    private static Color HsvToColor(double hue, double sat, double val)
+    {
+        var c = val * sat;
+        var x = c * (1 - Math.Abs((hue / 60) % 2 - 1));
+        var m = val - c;
+        double r, g, b;
+        if (hue < 60) { r = c; g = x; b = 0; }
+        else if (hue < 120) { r = x; g = c; b = 0; }
+        else if (hue < 180) { r = 0; g = c; b = x; }
+        else if (hue < 240) { r = 0; g = x; b = c; }
+        else if (hue < 300) { r = x; g = 0; b = c; }
+        else { r = c; g = 0; b = x; }
+        return Color.FromRgb(
+            (byte)Math.Round((r + m) * 255),
+            (byte)Math.Round((g + m) * 255),
+            (byte)Math.Round((b + m) * 255));
+    }
+
+    public object ConvertBack(object value, Type targetType, object? parameter, CultureInfo culture)
+        => throw new NotSupportedException();
+}

MainWindow.xaml

@@ -1,14 +1,92 @@
 <Window x:Class="WindowsGotify.MainWindow"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:local="clr-namespace:WindowsGotify"
         Title="Windows Gotify"
-        Width="780"
-        Height="620"
-        MinWidth="640"
-        MinHeight="480"
-        WindowStartupLocation="CenterScreen">
+        Width="1100"
+        Height="720"
+        MinWidth="900"
+        MinHeight="560"
+        WindowStartupLocation="CenterScreen"
+        Background="#FAFAFA">
 
-    <Grid Margin="20">
+    <Window.Resources>
+        <!-- 优先级颜色 -->
+        <local:PriorityToBrushConverter x:Key="PriorityToBrush"/>
+        <local:AppNameToBrushConverter x:Key="AppNameToBrush"/>
+
+        <!-- 历史列表行模板 -->
+        <DataTemplate x:Key="MessageRowTemplate">
+            <Grid Margin="0,4" Height="Auto">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="44"/>
+                    <ColumnDefinition Width="*"/>
+                </Grid.ColumnDefinitions>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="Auto"/>
+                </Grid.RowDefinitions>
+
+                <!-- 左侧优先级徽章 -->
+                <Border Grid.RowSpan="2"
+                        Grid.Column="0"
+                        Background="{Binding Priority, Converter={StaticResource PriorityToBrush}}"
+                        CornerRadius="4"
+                        Margin="0,2,8,2"
+                        Padding="4,2"
+                        VerticalAlignment="Top"
+                        HorizontalAlignment="Stretch">
+                    <TextBlock Text="{Binding PriorityDisplay}"
+                               Foreground="White"
+                               FontWeight="Bold"
+                               FontSize="11"
+                               HorizontalAlignment="Center" />
+                </Border>
+
+                <!-- 第一行:应用名 + 时间 -->
+                <DockPanel Grid.Row="0" Grid.Column="1">
+                    <TextBlock DockPanel.Dock="Right"
+                               Text="{Binding DateDisplay}"
+                               Foreground="#888"
+                               FontSize="11"
+                               VerticalAlignment="Center"
+                               Margin="8,0,0,0" />
+                    <TextBlock Text="{Binding AppName}"
+                               FontWeight="Bold"
+                               FontSize="13"
+                               VerticalAlignment="Center"
+                               Foreground="{Binding AppName, Converter={StaticResource AppNameToBrush}}" />
+                </DockPanel>
+
+                <!-- 第二行:标题(无则隐藏)+ 消息预览 -->
+                <StackPanel Grid.Row="1" Grid.Column="1" Margin="0,2,0,0">
+                    <TextBlock Text="{Binding TitleDisplay}"
+                               FontWeight="SemiBold"
+                               TextTrimming="CharacterEllipsis"
+                               Visibility="{Binding TitleDisplay, Converter={StaticResource PriorityToBrush}, ConverterParameter=hideIfEmpty}">
+                        <TextBlock.Style>
+                            <Style TargetType="TextBlock">
+                                <Setter Property="Visibility" Value="Visible"/>
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding TitleDisplay}" Value="(无标题)">
+                                        <Setter Property="Visibility" Value="Collapsed"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                        </TextBlock.Style>
+                    </TextBlock>
+                    <TextBlock Text="{Binding Message}"
+                               TextWrapping="Wrap"
+                               MaxHeight="44"
+                               TextTrimming="CharacterEllipsis"
+                               Foreground="#444"
+                               FontSize="12" />
+                </StackPanel>
+            </Grid>
+        </DataTemplate>
+    </Window.Resources>
+
+    <Grid Margin="16">
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="Auto"/>
@@ -17,109 +95,244 @@
             <RowDefinition Height="Auto"/>
         </Grid.RowDefinitions>
 
-        <!-- 标题 -->
-        <StackPanel Grid.Row="0">
+        <!-- 头部标题 -->
+        <StackPanel Grid.Row="0" Margin="0,0,0,12">
             <TextBlock Text="Windows Gotify"
-                       FontSize="26"
-                       FontWeight="Bold" />
-            <TextBlock Text="Gotify → Windows 原生通知 · 应用内查看历史"
-                       Margin="0,2,0,14"
-                       Foreground="Gray" />
+                       FontSize="24"
+                       FontWeight="Bold"
+                       Foreground="#222" />
+            <TextBlock Text="Gotify → Windows 原生通知 · 应用内按应用分类查看历史"
+                       Margin="0,2,0,0"
+                       Foreground="#888"
+                       FontSize="12" />
         </StackPanel>
 
         <!-- 设置区 -->
-        <Grid Grid.Row="1">
-            <Grid.ColumnDefinitions>
-                <ColumnDefinition Width="*"/>
-                <ColumnDefinition Width="*"/>
-            </Grid.ColumnDefinitions>
-            <Grid.RowDefinitions>
-                <RowDefinition Height="Auto"/>
-                <RowDefinition Height="Auto"/>
-                <RowDefinition Height="Auto"/>
-                <RowDefinition Height="Auto"/>
-            </Grid.RowDefinitions>
-
-            <TextBlock Grid.Row="0" Grid.Column="0" Text="Gotify URL" />
-            <TextBox x:Name="UrlTextBox"
-                     Grid.Row="1"
-                     Grid.Column="0"
-                     Margin="0,4,12,12"
-                     Height="30" />
-
-            <TextBlock Grid.Row="0" Grid.Column="1" Text="Client Token" />
-            <PasswordBox x:Name="TokenBox"
-                         Grid.Row="1"
-                         Grid.Column="1"
-                         Margin="0,4,0,12"
-                         Height="30" />
-
-            <TextBlock Grid.Row="2" Grid.ColumnSpan="2"
-                       x:Name="StatusText"
-                       FontSize="14"
-                       Margin="0,0,0,4" />
-            <TextBlock Grid.Row="3" Grid.ColumnSpan="2"
-                       Text="配置保存在 %LOCALAPPDATA%\WindowsGotify\config.json"
-                       Foreground="Gray"
-                       FontSize="11" />
-        </Grid>
-
-        <!-- 历史区 -->
-        <Border Grid.Row="3"
-                BorderBrush="#DDD"
+        <Border Grid.Row="1"
+                Background="White"
+                BorderBrush="#E0E0E0"
                 BorderThickness="1"
                 CornerRadius="4"
-                Padding="0"
-                Margin="0,12,0,0">
-            <DockPanel>
-                <Grid DockPanel.Dock="Top" Margin="10,8,10,4">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="*"/>
-                        <ColumnDefinition Width="Auto"/>
-                    </Grid.ColumnDefinitions>
-                    <TextBlock Text="历史消息(点击行可在浏览器打开链接,留空则只选中)"
-                               FontWeight="Bold"
-                               VerticalAlignment="Center" />
-                    <TextBlock x:Name="HistoryCountText"
-                               Grid.Column="1"
-                               Foreground="Gray"
-                               VerticalAlignment="Center" />
-                </Grid>
+                Padding="12"
+                Margin="0,0,0,8">
+            <Grid>
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="*"/>
+                    <ColumnDefinition Width="*"/>
+                </Grid.ColumnDefinitions>
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition Height="Auto"/>
+                </Grid.RowDefinitions>
 
-                <ListView x:Name="HistoryList"
-                          BorderThickness="0"
-                          MouseDoubleClick="HistoryList_MouseDoubleClick">
-                    <ListView.View>
-                        <GridView>
-                            <GridViewColumn Header="时间" Width="150" DisplayMemberBinding="{Binding DateDisplay}"/>
-                            <GridViewColumn Header="优先级" Width="60" DisplayMemberBinding="{Binding PriorityDisplay}"/>
-                            <GridViewColumn Header="标题" Width="120" DisplayMemberBinding="{Binding TitleDisplay}"/>
-                            <GridViewColumn Header="内容" Width="380" DisplayMemberBinding="{Binding Message}"/>
-                        </GridView>
-                    </ListView.View>
-                </ListView>
-            </DockPanel>
+                <TextBlock Grid.Row="0" Grid.Column="0"
+                           Text="Gotify URL"
+                           FontSize="11"
+                           Foreground="#666" />
+                <TextBox x:Name="UrlTextBox"
+                         Grid.Row="1"
+                         Grid.Column="0"
+                         Margin="0,2,12,0"
+                         Height="28"
+                         Padding="6,0"
+                         FontSize="12" />
+
+                <TextBlock Grid.Row="0" Grid.Column="1"
+                           Text="Client Token"
+                           FontSize="11"
+                           Foreground="#666" />
+                <PasswordBox x:Name="TokenBox"
+                             Grid.Row="1"
+                             Grid.Column="1"
+                             Margin="0,2,0,0"
+                             Height="28"
+                             Padding="6,0"
+                             FontSize="12" />
+            </Grid>
         </Border>
 
-        <!-- 按钮区 -->
-        <StackPanel Grid.Row="4"
-                    Orientation="Horizontal"
-                    HorizontalAlignment="Right"
-                    Margin="0,12,0,0">
-            <Button Content="刷新历史"
-                    Width="100"
-                    Height="34"
-                    Margin="0,0,8,0"
-                    Click="RefreshButton_Click" />
-            <Button Content="测试通知"
-                    Width="100"
-                    Height="34"
-                    Margin="0,0,8,0"
-                    Click="TestButton_Click" />
-            <Button Content="保存并重连"
-                    Width="120"
-                    Height="34"
-                    Click="SaveButton_Click" />
-        </StackPanel>
+        <!-- 状态 + 操作 -->
+        <DockPanel Grid.Row="2" Margin="0,4,0,8">
+            <StackPanel DockPanel.Dock="Left" Orientation="Horizontal" VerticalAlignment="Center">
+                <Ellipse x:Name="StatusDot" Width="8" Height="8" Fill="#999" Margin="0,0,6,0"/>
+                <TextBlock x:Name="StatusText"
+                           Text="状态:等待连接"
+                           FontSize="12"
+                           VerticalAlignment="Center" />
+                <TextBlock x:Name="AppCountText"
+                           Text="  ·  应用:?"
+                           FontSize="12"
+                           Foreground="#666"
+                           VerticalAlignment="Center"
+                           Margin="12,0,0,0" />
+            </StackPanel>
+            <StackPanel DockPanel.Dock="Right" Orientation="Horizontal" HorizontalAlignment="Right">
+                <Button Content="刷新应用"
+                        Width="86" Height="30" Margin="0,0,6,0"
+                        Click="RefreshAppsButton_Click" />
+                <Button Content="刷新历史"
+                        Width="86" Height="30" Margin="0,0,6,0"
+                        Click="RefreshButton_Click" />
+                <Button Content="测试通知"
+                        Width="86" Height="30" Margin="0,0,6,0"
+                        Click="TestButton_Click" />
+                <Button Content="保存并重连"
+                        Width="100" Height="30"
+                        Background="#0078D4" Foreground="White" BorderThickness="0"
+                        Click="SaveButton_Click" />
+            </StackPanel>
+        </DockPanel>
+
+        <!-- 主区域:历史(左) + 详情(右) -->
+        <Grid Grid.Row="3">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="2*" MinWidth="320"/>
+                <ColumnDefinition Width="6"/>
+                <ColumnDefinition Width="3*" MinWidth="380"/>
+            </Grid.ColumnDefinitions>
+
+            <!-- 历史列表 -->
+            <Border Grid.Column="0"
+                    Background="White"
+                    BorderBrush="#E0E0E0"
+                    BorderThickness="1"
+                    CornerRadius="4">
+                <DockPanel>
+                    <Border DockPanel.Dock="Top"
+                            Background="#F5F5F5"
+                            BorderBrush="#E0E0E0"
+                            BorderThickness="0,0,0,1"
+                            Padding="12,8">
+                        <DockPanel>
+                            <TextBlock Text="历史消息"
+                                       FontWeight="Bold"
+                                       FontSize="12"
+                                       VerticalAlignment="Center" />
+                            <TextBlock x:Name="HistoryCountText"
+                                       DockPanel.Dock="Right"
+                                       Text="共 0 条"
+                                       FontSize="11"
+                                       Foreground="#888"
+                                       VerticalAlignment="Center" />
+                        </DockPanel>
+                    </Border>
+                    <ListView x:Name="HistoryList"
+                              BorderThickness="0"
+                              ItemTemplate="{StaticResource MessageRowTemplate}"
+                              SelectionChanged="HistoryList_SelectionChanged"
+                              ScrollViewer.HorizontalScrollBarVisibility="Disabled"
+                              ScrollViewer.VerticalScrollBarVisibility="Auto">
+                        <ListView.ItemContainerStyle>
+                            <Style TargetType="ListViewItem">
+                                <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
+                                <Setter Property="Padding" Value="10,4"/>
+                                <Setter Property="BorderBrush" Value="#EEE"/>
+                                <Setter Property="BorderThickness" Value="0,0,0,1"/>
+                            </Style>
+                        </ListView.ItemContainerStyle>
+                    </ListView>
+                </DockPanel>
+            </Border>
+
+            <GridSplitter Grid.Column="1"
+                          Width="6"
+                          HorizontalAlignment="Stretch"
+                          Background="Transparent" />
+
+            <!-- 详情面板 -->
+            <Border Grid.Column="2"
+                    Background="White"
+                    BorderBrush="#E0E0E0"
+                    BorderThickness="1"
+                    CornerRadius="4">
+                <ScrollViewer VerticalScrollBarVisibility="Auto">
+                    <Grid Margin="16">
+                        <TextBlock x:Name="DetailEmptyHint"
+                                   Text="← 左侧选一条消息查看详情"
+                                   Foreground="#AAA"
+                                   FontSize="13"
+                                   HorizontalAlignment="Center"
+                                   VerticalAlignment="Center" />
+                        <StackPanel x:Name="DetailPanel" Visibility="Collapsed">
+                            <!-- 应用名(大标题,带颜色) -->
+                            <TextBlock x:Name="DetailAppName"
+                                       FontSize="22"
+                                       FontWeight="Bold"
+                                       Margin="0,0,0,4" />
+                            <TextBlock x:Name="DetailAppDesc"
+                                       Foreground="#888"
+                                       FontSize="12"
+                                       Margin="0,0,0,12"
+                                       TextWrapping="Wrap" />
+
+                            <!-- 元数据行 -->
+                            <Border Background="#F5F5F5"
+                                    CornerRadius="4"
+                                    Padding="10,8"
+                                    Margin="0,0,0,12">
+                                <Grid>
+                                    <Grid.ColumnDefinitions>
+                                        <ColumnDefinition Width="Auto"/>
+                                        <ColumnDefinition Width="*"/>
+                                    </Grid.ColumnDefinitions>
+                                    <Grid.RowDefinitions>
+                                        <RowDefinition Height="Auto"/>
+                                        <RowDefinition Height="4"/>
+                                        <RowDefinition Height="Auto"/>
+                                        <RowDefinition Height="4"/>
+                                        <RowDefinition Height="Auto"/>
+                                        <RowDefinition Height="4"/>
+                                        <RowDefinition Height="Auto"/>
+                                    </Grid.RowDefinitions>
+
+                                    <TextBlock Grid.Row="0" Grid.Column="0" Text="优先级" Foreground="#666" FontSize="11" Width="60"/>
+                                    <TextBlock Grid.Row="0" Grid.Column="1" x:Name="DetailPriority" FontSize="12" />
+                                    <TextBlock Grid.Row="2" Grid.Column="0" Text="时间" Foreground="#666" FontSize="11" Width="60"/>
+                                    <TextBlock Grid.Row="2" Grid.Column="1" x:Name="DetailDate" FontSize="12" />
+                                    <TextBlock Grid.Row="4" Grid.Column="0" Text="标题" Foreground="#666" FontSize="11" Width="60"/>
+                                    <TextBlock Grid.Row="4" Grid.Column="1" x:Name="DetailTitle" FontSize="12" TextWrapping="Wrap"/>
+                                    <TextBlock Grid.Row="6" Grid.Column="0" Text="App ID" Foreground="#666" FontSize="11" Width="60"/>
+                                    <TextBlock Grid.Row="6" Grid.Column="1" x:Name="DetailAppId" FontSize="12" />
+                                </Grid>
+                            </Border>
+
+                            <TextBlock Text="消息正文" Foreground="#666" FontSize="11" Margin="0,0,0,4"/>
+                            <Border Background="#F5F5F5"
+                                    CornerRadius="4"
+                                    Padding="10,8"
+                                    Margin="0,0,0,12">
+                                <TextBlock x:Name="DetailMessage"
+                                           TextWrapping="Wrap"
+                                           FontSize="13"
+                                           LineHeight="20" />
+                            </Border>
+
+                            <TextBlock x:Name="DetailUrlLabel"
+                                       Text="点击链接"
+                                       Foreground="#666"
+                                       FontSize="11"
+                                       Margin="0,0,0,4"
+                                       Visibility="Collapsed" />
+                            <TextBlock x:Name="DetailUrl"
+                                       Foreground="#0078D4"
+                                       FontSize="12"
+                                       TextDecorations="Underline"
+                                       Cursor="Hand"
+                                       MouseLeftButtonUp="DetailUrl_Click"
+                                       TextWrapping="Wrap"
+                                       Margin="0,0,0,12"
+                                       Visibility="Collapsed" />
+                        </StackPanel>
+                    </Grid>
+                </ScrollViewer>
+            </Border>
+        </Grid>
+
+        <!-- 底部提示 -->
+        <TextBlock Grid.Row="4"
+                   Text="配置保存在 %LOCALAPPDATA%\WindowsGotify\config.json"
+                   Foreground="#999"
+                   FontSize="10"
+                   Margin="0,8,0,0" />
     </Grid>
 </Window>

MainWindow.xaml.cs

@@ -2,12 +2,17 @@ using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
 using WindowsGotify.Models;
 using WindowsGotify.Services;
 using WindowsGotify.Tray;
 
-// 双开 WPF + WinForms 时,MessageBox 在两个命名空间都有,用别名强制走 WPF 的。
+// 双开 WPF + WinForms 时,这几个类型两个命名空间都有,固定走 WPF 的。
 using MessageBox = System.Windows.MessageBox;
+using Color = System.Windows.Media.Color;
+using Brush = System.Windows.Media.Brush;
+using Brushes = System.Windows.Media.Brushes;
 
 namespace WindowsGotify;
 
@@ -21,6 +26,7 @@ public partial class MainWindow : Window
     private TrayIconService? _tray;
     private GotifyWebSocketService? _webSocket;
     private GotifyApiService? _apiService;
+    private ApplicationCache? _appCache;
 
     private readonly ObservableCollection<GotifyMessage> _history = new();
 
@@ -42,7 +48,8 @@ public partial class MainWindow : Window
         Logger logger,
         TrayIconService tray,
         GotifyWebSocketService webSocket,
-        GotifyApiService apiService)
+        GotifyApiService apiService,
+        ApplicationCache appCache)
     {
         _config = config;
         _configService = configService;
@@ -50,14 +57,29 @@ public partial class MainWindow : Window
         _tray = tray;
         _webSocket = webSocket;
         _apiService = apiService;
+        _appCache = appCache;
 
         UrlTextBox.Text = config.Gotify.Url;
         TokenBox.Password = config.Gotify.ClientToken;
-        StatusText.Text = "状态:等待连接";
+        UpdateAppCount();
+        SetStatus("等待连接", StatusKind.Pending);
         UpdateHistoryCount();
 
         // 实时消息追加到历史
         _webSocket.MessageReceived += OnLiveMessage;
+
+        // 应用缓存更新时,刷新已加载消息的 AppName
+        if (_appCache != null)
+        {
+            _appCache.Updated += (_, _) => Dispatcher.Invoke(() =>
+            {
+                UpdateAppCount();
+                // 已存在的消息重新解析 AppName(缓存里可能新增了之前缺失的应用)
+                foreach (var m in _history) m.AppName = _appCache.GetName(m.AppId);
+                // 详情面板如果当前选中的,刷新
+                if (HistoryList.SelectedItem is GotifyMessage sel) RenderDetail(sel);
+            });
+        }
     }
 
     public void ShowFromTray()
@@ -65,13 +87,14 @@ public partial class MainWindow : Window
         Show();
         WindowState = WindowState.Normal;
         Activate();
-        // 每次打开都拉一次最新历史,确保和远端同步
+        // 每次打开都拉一次最新历史和应用,确保和远端同步
         _ = LoadHistoryAsync();
+        _ = RefreshAppsAsync(silent: true);
     }
 
     private void OnLiveMessage(GotifyMessage msg)
     {
-        // WebSocket 回调可能在非 UI 线程,切回 UI 线程
+        Enrich(msg);
         Dispatcher.Invoke(() =>
         {
             _history.Insert(0, msg);
@@ -80,6 +103,18 @@ public partial class MainWindow : Window
         });
     }
 
+    /// <summary>
+    /// 拿到一条消息后,补 AppName(从缓存查),返回原对象。
+    /// </summary>
+    private GotifyMessage Enrich(GotifyMessage msg)
+    {
+        if (_appCache != null && string.IsNullOrEmpty(msg.AppName))
+        {
+            msg.AppName = _appCache.GetName(msg.AppId);
+        }
+        return msg;
+    }
+
     private void TrimHistory()
     {
         while (_history.Count > MaxHistoryInUi)
@@ -90,7 +125,27 @@ public partial class MainWindow : Window
 
     private void UpdateHistoryCount()
     {
-        HistoryCountText.Text = $"共 {_history.Count} 条(本地缓存上限 {MaxHistoryInUi})";
+        HistoryCountText.Text = $"共 {_history.Count} 条";
+    }
+
+    private void UpdateAppCount()
+    {
+        if (_appCache == null) { AppCountText.Text = "  ·  应用:?"; return; }
+        var n = _appCache.Count;
+        AppCountText.Text = n == 0 ? "  ·  应用:0(未拉取)" : $"  ·  应用:{n}";
+    }
+
+    private enum StatusKind { Pending, Connected, Error, Info }
+    private void SetStatus(string text, StatusKind kind)
+    {
+        StatusText.Text = $"状态:{text}";
+        StatusDot.Fill = kind switch
+        {
+            StatusKind.Connected => new SolidColorBrush(Color.FromRgb(0x10, 0x81, 0x16)),
+            StatusKind.Error      => new SolidColorBrush(Color.FromRgb(0xD1, 0x34, 0x38)),
+            StatusKind.Pending    => new SolidColorBrush(Color.FromRgb(0xCA, 0x50, 0x10)),
+            _                     => new SolidColorBrush(Color.FromRgb(0x88, 0x88, 0x88))
+        };
     }
 
     private async Task LoadHistoryAsync()
@@ -98,58 +153,122 @@ public partial class MainWindow : Window
         if (_apiService is null || _config is null) return;
         if (string.IsNullOrWhiteSpace(_config.Gotify.ClientToken))
         {
-            StatusText.Text = "状态:未配置 Client Token,无法拉取历史";
+            SetStatus("未配置 Client Token,无法拉取历史", StatusKind.Error);
             return;
         }
 
         try
         {
-            StatusText.Text = "状态:正在拉取历史...";
+            SetStatus("正在拉取历史...", StatusKind.Pending);
             var limit = Math.Clamp(_config.History.ViewerLimit, 1, 100);
             var messages = await _apiService.GetRecentMessagesAsync(limit, CancellationToken.None);
+            foreach (var m in messages) Enrich(m);
 
-            // 用清空 + 批量 Insert 让 UI 一次性刷新,避免多次 CollectionChanged
             _history.Clear();
-            foreach (var m in messages)
-            {
-                _history.Add(m);
-            }
+            foreach (var m in messages) _history.Add(m);
             UpdateHistoryCount();
-            StatusText.Text = $"状态:已加载 {messages.Count} 条历史消息";
+            SetStatus($"已加载 {messages.Count} 条历史消息", StatusKind.Connected);
             _logger?.Info($"History loaded. count={messages.Count}");
         }
         catch (Exception ex)
         {
             _logger?.Error("Load history failed.", ex);
-            StatusText.Text = $"状态:拉取历史失败 - {ex.Message}";
+            SetStatus($"拉取历史失败 - {ex.Message}", StatusKind.Error);
         }
     }
 
+    private async Task RefreshAppsAsync(bool silent = false)
+    {
+        if (_appCache is null) return;
+        if (_config is null || string.IsNullOrWhiteSpace(_config.Gotify.ClientToken))
+        {
+            if (!silent) SetStatus("未配置 Client Token,无法拉取应用", StatusKind.Error);
+            return;
+        }
+        try
+        {
+            if (!silent) SetStatus("正在拉取应用列表...", StatusKind.Pending);
+            await _appCache.RefreshAsync();
+            UpdateAppCount();
+            if (!silent) SetStatus($"已加载 {_appCache.Count} 个应用", StatusKind.Connected);
+        }
+        catch (Exception ex)
+        {
+            _logger?.Error("Refresh applications failed.", ex);
+            if (!silent) SetStatus($"拉取应用失败 - {ex.Message}", StatusKind.Error);
+        }
+    }
+
+    private async void RefreshAppsButton_Click(object sender, RoutedEventArgs e)
+    {
+        await RefreshAppsAsync();
+    }
+
     private async void RefreshButton_Click(object sender, RoutedEventArgs e)
     {
         await LoadHistoryAsync();
     }
 
-    private void HistoryList_MouseDoubleClick(object sender, System.Windows.Input.MouseButtonEventArgs e)
+    private void HistoryList_SelectionChanged(object sender, SelectionChangedEventArgs e)
     {
-        if (HistoryList.SelectedItem is not GotifyMessage msg) return;
-        var url = msg.ClickUrl;
-        if (string.IsNullOrWhiteSpace(url)) return;
-
-        try
+        if (HistoryList.SelectedItem is GotifyMessage msg)
         {
-            Process.Start(new ProcessStartInfo
-            {
-                FileName = url,
-                UseShellExecute = true
-            });
-            _logger?.Info($"Opened click url. id={msg.Id}, url={url}");
+            RenderDetail(msg);
         }
-        catch (Exception ex)
+        else
         {
-            _logger?.Error("Failed to open click url.", ex);
-            MessageBox.Show($"无法打开链接:{ex.Message}", "Windows Gotify",
-                MessageBoxButton.OK, MessageBoxImage.Warning);
+            DetailPanel.Visibility = Visibility.Collapsed;
+            DetailEmptyHint.Visibility = Visibility.Visible;
+        }
+    }
+
+    private void RenderDetail(GotifyMessage msg)
+    {
+        DetailEmptyHint.Visibility = Visibility.Collapsed;
+        DetailPanel.Visibility = Visibility.Visible;
+
+        DetailAppName.Text = string.IsNullOrWhiteSpace(msg.AppName) ? msg.TitleDisplay : msg.AppName;
+        DetailAppName.Foreground = (Brush)(new AppNameToBrushConverter().Convert(msg.AppName, typeof(Brush), null, System.Globalization.CultureInfo.CurrentCulture) ?? Brushes.Black);
+
+        var app = _appCache?.Get(msg.AppId);
+        DetailAppDesc.Text = app?.Description ?? "(无应用描述)";
+        DetailAppDesc.Visibility = string.IsNullOrWhiteSpace(app?.Description) ? Visibility.Collapsed : Visibility.Visible;
+
+        DetailPriority.Text = $"{msg.PriorityDisplay}  ({(msg.Priority >= 8 ? "紧急-告警音" : msg.Priority >= 5 ? "重要" : "一般")})";
+        DetailDate.Text = msg.Date.ToLocalTime().ToString("yyyy-MM-dd HH:mm:ss");
+        DetailTitle.Text = msg.TitleDisplay;
+        DetailAppId.Text = msg.AppId.ToString();
+        DetailMessage.Text = msg.Message ?? "";
+
+        var url = msg.ClickUrl;
+        if (!string.IsNullOrWhiteSpace(url))
+        {
+            DetailUrl.Text = url;
+            DetailUrl.Tag = url;
+            DetailUrlLabel.Visibility = Visibility.Visible;
+            DetailUrl.Visibility = Visibility.Visible;
+        }
+        else
+        {
+            DetailUrlLabel.Visibility = Visibility.Collapsed;
+            DetailUrl.Visibility = Visibility.Collapsed;
+        }
+    }
+
+    private void DetailUrl_Click(object sender, MouseButtonEventArgs e)
+    {
+        if (DetailUrl.Tag is string url && !string.IsNullOrWhiteSpace(url))
+        {
+            try
+            {
+                Process.Start(new ProcessStartInfo { FileName = url, UseShellExecute = true });
+            }
+            catch (Exception ex)
+            {
+                _logger?.Error("Failed to open click url.", ex);
+                MessageBox.Show($"无法打开链接:{ex.Message}", "Windows Gotify",
+                    MessageBoxButton.OK, MessageBoxImage.Warning);
+            }
         }
     }
 
@@ -180,6 +299,9 @@ public partial class MainWindow : Window
 
         await _configService.SaveAsync(_config);
         _webSocket?.RequestReconnect();
+        // URL/Token 变了,重新拉应用和历史
+        _ = RefreshAppsAsync(silent: true);
+        await LoadHistoryAsync();
 
         MessageBox.Show("配置已保存,正在重新连接。", "Windows Gotify",
             MessageBoxButton.OK, MessageBoxImage.Information);

Models/GotifyApplication.cs

@@ -0,0 +1,24 @@
+using System.Text.Json.Serialization;
+
+namespace WindowsGotify.Models;
+
+public sealed class GotifyApplication
+{
+    [JsonPropertyName("id")]
+    public long Id { get; set; }
+
+    [JsonPropertyName("name")]
+    public string Name { get; set; } = "";
+
+    [JsonPropertyName("description")]
+    public string? Description { get; set; }
+
+    [JsonPropertyName("defaultPriority")]
+    public int DefaultPriority { get; set; }
+
+    [JsonPropertyName("createdAt")]
+    public DateTimeOffset? CreatedAt { get; set; }
+
+    [JsonPropertyName("internal")]
+    public bool Internal { get; set; }
+}

Models/GotifyMessage.cs

@@ -26,9 +26,15 @@ public sealed class GotifyMessage
     [JsonPropertyName("extras")]
     public Dictionary<string, JsonElement>? Extras { get; set; }
 
+    /// <summary>
+    /// 由 UI 在加入历史列表前,从 ApplicationCache 解析填入;不会从 JSON 反序列化。
+    /// </summary>
+    [JsonIgnore]
+    public string AppName { get; set; } = "";
+
     [JsonIgnore]
     public string TitleDisplay =>
-        string.IsNullOrWhiteSpace(Title) ? $"(App {AppId})" : Title!;
+        string.IsNullOrWhiteSpace(Title) ? "(无标题)" : Title!;
 
     [JsonIgnore]
     public string DateDisplay =>

Services/ApplicationCache.cs

@@ -0,0 +1,59 @@
+using System.Collections.Concurrent;
+using WindowsGotify.Models;
+
+namespace WindowsGotify.Services;
+
+/// <summary>
+/// 缓存 Gotify Applications 列表(从 GET /application 拉取),供 UI 用来把消息的 AppId 解析为可读应用名。
+/// </summary>
+public sealed class ApplicationCache
+{
+    private readonly ConcurrentDictionary<long, GotifyApplication> _apps = new();
+    private readonly GotifyApiService _api;
+    private readonly Logger _logger;
+    private DateTimeOffset _lastFetchedAt = DateTimeOffset.MinValue;
+
+    public ApplicationCache(GotifyApiService api, Logger logger)
+    {
+        _api = api;
+        _logger = logger;
+    }
+
+    public int Count => _apps.Count;
+
+    public event EventHandler? Updated;
+
+    /// <summary>
+    /// 拉一次最新的应用列表。失败抛异常,调用方决定怎么处理(忽略 / 重试 / 提示)。
+    /// </summary>
+    public async Task RefreshAsync(CancellationToken ct = default)
+    {
+        var list = await _api.GetApplicationsAsync(ct);
+        _apps.Clear();
+        foreach (var app in list)
+        {
+            _apps[app.Id] = app;
+        }
+        _lastFetchedAt = DateTimeOffset.UtcNow;
+        _logger.Info($"ApplicationCache refreshed. count={list.Count}");
+        Updated?.Invoke(this, EventArgs.Empty);
+    }
+
+    /// <summary>
+    /// 把 appId 解析为应用名。缓存里没有就回退 "App {id}"。
+    /// </summary>
+    public string GetName(long appId)
+    {
+        return _apps.TryGetValue(appId, out var app) && !string.IsNullOrWhiteSpace(app.Name)
+            ? app.Name
+            : $"App {appId}";
+    }
+
+    public GotifyApplication? Get(long appId)
+    {
+        _apps.TryGetValue(appId, out var app);
+        return app;
+    }
+
+    public DateTimeOffset LastFetchedAt => _lastFetchedAt;
+}

Services/GotifyApiService.cs

@@ -90,4 +90,19 @@ public sealed class GotifyApiService
         // Gotify 的 since=0 行为:返回数据库里所有消息中的 limit 条;按 id 降序再取一次保证正确
         return list.OrderByDescending(m => m.Id).Take(Math.Clamp(limit, 1, 100)).ToList();
     }
+
+    /// <summary>
+    /// 拉取所有 Gotify Application,供 UI 用来把消息 AppId 解析为应用名。
+    /// </summary>
+    public async Task<List<GotifyApplication>> GetApplicationsAsync(CancellationToken ct)
+    {
+        SyncAuthHeaders();
+        var path = "application?limit=999";
+        using var response = await _httpClient.GetAsync(BuildUri(path), ct);
+        response.EnsureSuccessStatusCode();
+
+        await using var stream = await response.Content.ReadAsStreamAsync(ct);
+        var list = await JsonSerializer.DeserializeAsync<List<GotifyApplication>>(stream, cancellationToken: ct);
+        return list ?? new List<GotifyApplication>();
+    }
 }