Baseline: WPF/Avalonia/Cli/Core + plans (BROWSER_FEATURES_PLAN v2, MOBILE_PLAN v1)

VideoDownloader.Core/Social/DenoRunner.cs

@@ -0,0 +1,105 @@
+using System.IO.Compression;
+using System.Runtime.InteropServices;
+using VideoDownloader.Core.Config;
+
+namespace VideoDownloader.Core.Social;
+
+/// <summary>
+/// Deno(JS 런타임) 해결(설정 오버라이드 → 번들 → PATH → 자동 다운로드) +
+/// 안전한 다운로드(GitHub Releases zip → deno.exe 추출). yt-dlp 의 EJS(n 챌린지 해석) 실행에 필요.
+/// YtDlpRunner.RunAsync 가 자식 프로세스 PATH 에 ToolsDir 를 추가하므로, 번들 deno.exe 는 yt-dlp 가 자동 발견.
+/// </summary>
+public static class DenoRunner
+{
+    // yt-dlp 와 동일한 tools 디렉터리를 공유 → PATH 주입 한 번으로 yt-dlp/ffmpeg/deno 모두 발견.
+    public static string ToolsDir => YtDlpRunner.ToolsDir;
+
+    private static string BundledExe => OperatingSystem.IsWindows() ? "deno.exe" : "deno";
+    public static string BundledPath => Path.Combine(ToolsDir, BundledExe);
+
+    private static readonly HttpClient Downloader = new(new HttpClientHandler { AllowAutoRedirect = true })
+    { Timeout = TimeSpan.FromMinutes(5) };
+
+    /// <summary>Deno 는 Windows ARM 네이티브 빌드가 없어 x64 에뮬레이션. macOS/Linux 는 아키텍처별 에셋.</summary>
+    private static string AssetName
+    {
+        get
+        {
+            bool arm = RuntimeInformation.ProcessArchitecture is Architecture.Arm64;
+            if (OperatingSystem.IsWindows()) return "deno-x86_64-pc-windows-msvc.zip";
+            if (OperatingSystem.IsMacOS()) return arm ? "deno-aarch64-apple-darwin.zip" : "deno-x86_64-apple-darwin.zip";
+            return arm ? "deno-aarch64-unknown-linux-gnu.zip" : "deno-x86_64-unknown-linux-gnu.zip";
+        }
+    }
+
+    private static string ReleaseUrl => $"https://github.com/denoland/deno/releases/latest/download/{AssetName}";
+
+    /// <summary>Deno 경로 해결. 못 찾으면 null.</summary>
+    public static string? Resolve(AppConfig config)
+    {
+        if (!string.IsNullOrWhiteSpace(config.DenoPath) && File.Exists(config.DenoPath))
+            return config.DenoPath;
+        try { if (File.Exists(BundledPath)) return BundledPath; } catch { }
+        return FindOnPath(OperatingSystem.IsWindows() ? "deno.exe" : "deno");
+    }
+
+    /// <summary>Deno 가 없고 AutoInstallDeno 면 번들 디렉터리로 자동 다운로드. 경로 반환(실패 시 null).</summary>
+    public static async Task<string?> EnsureInstalledAsync(AppConfig config, Action<string>? log, CancellationToken ct)
+    {
+        var found = Resolve(config);
+        if (found != null) return found;
+        if (!config.AutoInstallDeno) return null;
+        return await DownloadAsync(config, log, ct);
+    }
+
+    /// <summary>Deno 를 강제로(재)다운로드해 번들 디렉터리에 설치.</summary>
+    public static async Task<string?> DownloadAsync(AppConfig config, Action<string>? log, CancellationToken ct)
+    {
+        var tmpZip = BundledPath + ".zip";
+        try
+        {
+            Directory.CreateDirectory(ToolsDir);
+            log?.Invoke("Deno 다운로드 중...");
+            using var resp = await Downloader.GetAsync(ReleaseUrl, HttpCompletionOption.ResponseHeadersRead, ct);
+            resp.EnsureSuccessStatusCode();
+            await using (var src = await resp.Content.ReadAsStreamAsync(ct))
+            await using (var dst = new FileStream(tmpZip, FileMode.Create, FileAccess.Write, FileShare.None, 65536, useAsync: true))
+            {
+                await src.CopyToAsync(dst, 65536, ct);
+                await dst.FlushAsync(ct);
+            }
+
+            // zip 에서 deno 실행파일 엔트리만 추출(압축 풀면 deno/deno.exe 단일 파일).
+            try { if (File.Exists(BundledPath)) File.Delete(BundledPath); } catch { }
+            using var archive = new ZipArchive(new FileStream(tmpZip, FileMode.Open, FileAccess.Read, FileShare.None, 65536, useAsync: true), ZipArchiveMode.Read);
+            var entry = archive.Entries.FirstOrDefault(e => e.Name.Equals(BundledExe, StringComparison.OrdinalIgnoreCase));
+            if (entry == null) { log?.Invoke("Deno 추출 실패: zip 에 실행파일이 없음"); return null; }
+            await using var es = entry.Open();
+            await using var fs = new FileStream(BundledPath, FileMode.Create, FileAccess.Write, FileShare.None, 65536, useAsync: true);
+            await es.CopyToAsync(fs, 65536, ct);
+            await fs.FlushAsync(ct);
+
+            log?.Invoke($"Deno 설치 완료: {BundledPath}");
+            return BundledPath;
+        }
+        catch (Exception e)
+        {
+            log?.Invoke($"Deno 다운로드 실패: {e.Message}");
+            return null;
+        }
+        finally
+        {
+            try { if (File.Exists(tmpZip)) File.Delete(tmpZip); } catch { }
+        }
+    }
+
+    private static string? FindOnPath(string name)
+    {
+        foreach (var d in (Environment.GetEnvironmentVariable("PATH") ?? "").Split(Path.PathSeparator))
+        {
+            var p = Path.Combine(d.Trim('"'), name);
+            if (File.Exists(p)) return p;
+        }
+        return null;
+    }
+}