enhance: show inner exception message if possible when check update failed

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/App.axaml.cs

@@ -532,7 +532,7 @@ private void Check4Update(bool manually = false)
                 catch (Exception e)
                 {
                     if (manually)
-                        ShowSelfUpdateResult(e);
+                        ShowSelfUpdateResult(new Models.SelfUpdateFailed(e));
                 }
             });
         }

src/Models/Version.cs src/Models/SelfUpdate.cssrc/Models/Version.cs renamed to src/Models/SelfUpdate.cs

@@ -1,4 +1,5 @@
-using System.Reflection;
+using System;
+using System.Reflection;
 using System.Text.Json.Serialization;
 
 namespace SourceGit.Models
@@ -32,5 +33,24 @@ public bool IsNewVersion
         }
     }
 
-    public class AlreadyUpToDate { }
+    public class AlreadyUpToDate
+    {
+    }
+
+    public class SelfUpdateFailed
+    {
+        public string Reason
+        {
+            get;
+            private set;
+        }
+
+        public SelfUpdateFailed(Exception e)
+        {
+            if (e.InnerException is { } inner)
+                Reason = inner.Message;
+            else
+                Reason = e.Message;
+        }
+    }
 }

src/Views/SelfUpdate.axaml

@@ -5,7 +5,6 @@
                     xmlns:m="using:SourceGit.Models"
                     xmlns:vm="using:SourceGit.ViewModels"
                     xmlns:v="using:SourceGit.Views"
-                    xmlns:sys="clr-namespace:System;assembly=mscorlib"
                     mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
                     x:Class="SourceGit.Views.SelfUpdate"
                     x:DataType="vm:SelfUpdate"
@@ -87,15 +86,13 @@
             </StackPanel>
           </DataTemplate>
 
-          <DataTemplate DataType="sys:Exception">
+          <DataTemplate DataType="m:AlreadyUpToDate">
             <StackPanel Orientation="Vertical" Margin="16,8">
-              <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
-                <Path Width="14" Height="14" Data="{StaticResource Icons.Error}" Fill="Red"/>
-                <TextBlock Margin="8,0,0,0" FontWeight="Bold" FontSize="14" Text="{DynamicResource Text.SelfUpdate.Error}"/>
+              <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,8">
+                <Path Width="14" Height="14" Data="{StaticResource Icons.Info}" Fill="Green"/>
+                <TextBlock Margin="8,0,0,0" Text="{DynamicResource Text.SelfUpdate.UpToDate}"/>
               </StackPanel>
 
-              <TextBlock Text="{Binding Message}" MaxWidth="500" TextWrapping="Wrap" Margin="0,8"/>
-
               <Button Classes="flat primary"
                       Height="30"
                       Margin="4,0"
@@ -107,13 +104,15 @@
             </StackPanel>
           </DataTemplate>
 
-          <DataTemplate DataType="m:AlreadyUpToDate">
+          <DataTemplate DataType="m:SelfUpdateFailed">
             <StackPanel Orientation="Vertical" Margin="16,8">
-              <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0,8">
-                <Path Width="14" Height="14" Data="{StaticResource Icons.Info}" Fill="Green"/>
-                <TextBlock Margin="8,0,0,0" Text="{DynamicResource Text.SelfUpdate.UpToDate}"/>
+              <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
+                <Path Width="14" Height="14" Data="{StaticResource Icons.Error}" Fill="Red"/>
+                <TextBlock Margin="8,0,0,0" FontWeight="Bold" FontSize="14" Text="{DynamicResource Text.SelfUpdate.Error}"/>
               </StackPanel>
 
+              <TextBlock Text="{Binding Reason}" MaxWidth="500" TextWrapping="Wrap" Margin="0,8"/>
+
               <Button Classes="flat primary"
                       Height="30"
                       Margin="4,0"