Feat: implement template download

Author: cpa-coder

DebitExpress.VatRelief/DebitExpress.VatRelief.csproj

@@ -18,6 +18,8 @@
 
     <ItemGroup>
       <Resource Include="favicon.png" />
+      <None Remove="template.xlsx" />
+      <EmbeddedResource Include="template.xlsx" />
     </ItemGroup>
 
 </Project>

DebitExpress.VatRelief/MainWindow.xaml

@@ -92,5 +92,21 @@
                 Style="{StaticResource MaterialDesignFlatMidBgButton}"
                 Content="Generate" />
         </StackPanel>
+        <StackPanel
+            Margin="10,40,10,10"
+            Orientation="Horizontal"
+            VerticalAlignment="Top"
+            HorizontalAlignment="Right">
+            <Button
+                x:Name="DownloadButton"
+                ToolTip="Download excel template"
+                Style="{StaticResource MaterialDesignFlatButton}">
+                <materialDesign:PackIcon 
+                    Kind="Download" 
+                    Height="20" 
+                    Width="20"
+                    Foreground="{StaticResource PrimaryHueMidBrush}"/>
+            </Button>
+        </StackPanel>
     </Grid>
 </ctrl:Window>

DebitExpress.VatRelief/MainWindow.xaml.cs

@@ -2,6 +2,7 @@
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
+using System.Reflection;
 using System.Windows;
 using DebitExpress.VatRelief.Models;
 using DebitExpress.VatRelief.Utils;
@@ -31,6 +32,7 @@ public MainWindow()
         ErrorSnackBar.MessageQueue = _errorQueue;
 
         GenerateButton.Click += OnGenerate;
+        DownloadButton.Click += OnDownload;
     }
 
     #region Drag and drop
@@ -75,6 +77,8 @@ private void OnDragOver(object sender, DragEventArgs e)
 
     #endregion
 
+    #region Generate
+
     private async void OnGenerate(object sender, RoutedEventArgs e)
     {
         try
@@ -138,6 +142,8 @@ private void OpenFolder(string path)
         Process.Start(startInfo);
     }
 
+    #endregion
+
     private void NotifyErrorResult(string message)
     {
         _messageQueue.Clear();
@@ -149,4 +155,42 @@ private void NotifyResult(string message)
         _errorQueue.Clear();
         _messageQueue.Enqueue(message, "×", () => { });
     }
+
+    #region download template
+
+    private void OnDownload(object sender, RoutedEventArgs e)
+    {
+        DownloadButton.IsEnabled = false;
+
+        try
+        {
+            var path = Path.Combine(Path.GetTempPath(), "vat-relief");
+            Directory.CreateDirectory(path);
+
+            var assembly = Assembly.GetExecutingAssembly();
+            using var stream = assembly.GetManifestResourceStream("DebitExpress.VatRelief.template.xlsx");
+
+            if (stream == null) return;
+
+            var filePath = Path.Combine(path, "template.xlsx");
+            using var fileStream = File.Create(Path.Combine(filePath));
+            stream.Seek(0, SeekOrigin.Begin);
+            stream.CopyTo(fileStream);
+            fileStream.Close();
+
+            NotifyResult("Template downloaded successfully");
+            OpenExcelFile(filePath);
+        }
+        finally
+        {
+            DownloadButton.IsEnabled = true;
+        }
+    }
+
+    private static void OpenExcelFile(string excelFile)
+    {
+        new Process { StartInfo = new ProcessStartInfo(excelFile) { UseShellExecute = true } }.Start();
+    }
+
+    #endregion
 }