Download FFmpeg via a project target (Tyrrrz#658)

Author: Tyrrrz

.github/workflows/main.yml

@@ -92,16 +92,12 @@ jobs:
         with:
           dotnet-version: 9.0.x
 
-      - name: Download FFmpeg
-        if: ${{ matrix.bundle-ffmpeg }}
-        shell: pwsh
-        run: YoutubeDownloader/DownloadFFmpeg.ps1 -platform ${{ matrix.rid }}
-
       - name: Publish app
         run: >
           dotnet publish YoutubeDownloader
           -p:Version=${{ github.ref_type == 'tag' && github.ref_name || format('999.9.9-ci-{0}', github.sha) }}
           -p:CSharpier_Bypass=true
+          -p:DownloadFFmpeg=${{ matrix.bundle-ffmpeg }}
           --output YoutubeDownloader/bin/publish
           --configuration Release
           --runtime ${{ matrix.rid }}

YoutubeDownloader/Download-FFmpeg.ps1

@@ -0,0 +1,68 @@
+param (
+    [Parameter(Mandatory=$false)]
+    [string]$Platform,
+
+    [Parameter(Mandatory=$false)]
+    [string]$OutputPath
+)
+
+$ErrorActionPreference = "Stop"
+
+# If the platform is not specified, use the current OS/arch
+if (-not $Platform) {
+    $arch = [Runtime.InteropServices.RuntimeInformation]::OSArchitecture
+
+    if ($isWindows) {
+        $Platform = "windows-$arch"
+    } elseif ($isLinux) {
+        $Platform = "linux-$arch"
+    } elseif ($isMacOS) {
+        $Platform = "osx-$arch"
+    } else {
+        throw "Unsupported platform"
+    }
+}
+
+# Normalize platform identifier
+$Platform = $Platform.ToLower().Replace("win-", "windows-")
+$fileName = if ($Platform.Contains("windows-")) { "ffmpeg.exe" } else { "ffmpeg" }
+
+# If the output path is not specified, use the current directory
+if (-not $OutputPath) {
+    $OutputPath = "$PSScriptRoot/$fileName"
+}
+
+# If the output path is an existing directory, append the default file name for the platform
+if (Test-Path $OutputPath -PathType Container) {
+    $OutputPath = Join-Path $OutputPath $fileName
+}
+
+# Delete the existing file if it exists
+if (Test-Path $OutputPath) {
+    Remove-Item $OutputPath
+}
+
+# Download the archive
+Write-Host "Downloading FFmpeg for $Platform..."
+$http = New-Object System.Net.WebClient
+try {
+    $http.DownloadFile("https://github.com/Tyrrrz/FFmpegBin/releases/download/7.0/ffmpeg-$Platform.zip", "$OutputPath.zip")
+} finally {
+    $http.Dispose()
+}
+
+try {
+    # Extract FFmpeg
+    Add-Type -Assembly System.IO.Compression.FileSystem
+    $zip = [IO.Compression.ZipFile]::OpenRead("$OutputPath.zip")
+    try {
+        [IO.Compression.ZipFileExtensions]::ExtractToFile($zip.GetEntry($fileName), $OutputPath)
+    } finally {
+        $zip.Dispose()
+    }
+
+    Write-Host "Done downloading FFmpeg."
+} finally {
+    # Clean up
+    Remove-Item "$OutputPath.zip" -Force
+}

YoutubeDownloader/DownloadFFmpeg.ps1

@@ -12,6 +12,10 @@
     <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <DownloadFFmpeg>true</DownloadFFmpeg>
+  </PropertyGroup>
+
   <ItemGroup>
     <AvaloniaResource Include="..\favicon.ico" Link="favicon.ico" />
   </ItemGroup>
@@ -60,4 +64,9 @@
     <TrimmerRootAssembly Include="WebView.Core" />
   </ItemGroup>
 
+  <Target Name="DownloadFFmpeg" BeforeTargets="Restore;PreBuildEvent" Condition="$(DownloadFFmpeg) AND !Exists('ffmpeg.exe') AND !Exists('ffmpeg')">
+    <Exec Command="pwsh -ExecutionPolicy Bypass -File $(ProjectDir)/Download-FFmpeg.ps1 -Platform $(RuntimeIdentifier) -OutputPath $(ProjectDir)" LogStandardErrorAsError="true" Condition="'$(RuntimeIdentifier)' != ''" />
+    <Exec Command="pwsh -ExecutionPolicy Bypass -File $(ProjectDir)/Download-FFmpeg.ps1 -OutputPath $(ProjectDir)" LogStandardErrorAsError="true" Condition="'$(RuntimeIdentifier)' == ''" />
+  </Target>
+
 </Project>