From 2fa8196105f6459c7e868d7cebf4ce97f11a637d Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Thu, 5 Feb 2026 13:56:48 +0000
Subject: [PATCH] Replace bash scripts with C# build targets for benchmark
 display and comparison

Co-authored-by: adamhathcock <527620+adamhathcock@users.noreply.github.com>
---
 .github/workflows/performance-benchmarks.yml | 20 +---
 build/Program.cs                             | 98 ++++++++++++++++++++
 2 files changed, 100 insertions(+), 18 deletions(-)

diff --git a/.github/workflows/performance-benchmarks.yml b/.github/workflows/performance-benchmarks.yml
index d15333ac..907a96e9 100644
--- a/.github/workflows/performance-benchmarks.yml
+++ b/.github/workflows/performance-benchmarks.yml
@@ -36,27 +36,11 @@ jobs:
     
     - name: Display Benchmark Results
       if: always()
-      run: |
-        echo "## Benchmark Results" >> $GITHUB_STEP_SUMMARY
-        echo "" >> $GITHUB_STEP_SUMMARY
-        if [ -d "benchmark-results/results" ]; then
-          for file in benchmark-results/results/*-report-github.md; do
-            if [ -f "$file" ]; then
-              cat "$file" >> $GITHUB_STEP_SUMMARY
-              echo "" >> $GITHUB_STEP_SUMMARY
-            fi
-          done
-        fi
+      run: dotnet run --project build/build.csproj -- display-benchmark-results
     
     - name: Compare with Baseline
       if: always()
-      run: |
-        echo "## Comparison with Baseline" >> $GITHUB_STEP_SUMMARY
-        echo "" >> $GITHUB_STEP_SUMMARY
-        echo "Baseline results are stored in tests/SharpCompress.Performance/baseline-results.md" >> $GITHUB_STEP_SUMMARY
-        echo "" >> $GITHUB_STEP_SUMMARY
-        echo "### Baseline Results" >> $GITHUB_STEP_SUMMARY
-        cat tests/SharpCompress.Performance/baseline-results.md >> $GITHUB_STEP_SUMMARY || echo "Baseline file not found" >> $GITHUB_STEP_SUMMARY
+      run: dotnet run --project build/build.csproj -- compare-benchmark-results
     
     - name: Upload Benchmark Results
       if: always()
diff --git a/build/Program.cs b/build/Program.cs
index 1ad21f50..c6c70cec 100644
--- a/build/Program.cs
+++ b/build/Program.cs
@@ -19,6 +19,8 @@ const string Publish = "publish";
 const string DetermineVersion = "determine-version";
 const string UpdateVersion = "update-version";
 const string PushToNuGet = "push-to-nuget";
+const string DisplayBenchmarkResults = "display-benchmark-results";
+const string CompareBenchmarkResults = "compare-benchmark-results";
 
 Target(
     Clean,
@@ -210,6 +212,102 @@ Target(
     }
 );
 
+Target(
+    DisplayBenchmarkResults,
+    () =>
+    {
+        var githubStepSummary = Environment.GetEnvironmentVariable("GITHUB_STEP_SUMMARY");
+        var resultsDir = "benchmark-results/results";
+
+        if (!Directory.Exists(resultsDir))
+        {
+            Console.WriteLine("No benchmark results found.");
+            return;
+        }
+
+        var markdownFiles = Directory
+            .GetFiles(resultsDir, "*-report-github.md")
+            .OrderBy(f => f)
+            .ToList();
+
+        if (markdownFiles.Count == 0)
+        {
+            Console.WriteLine("No benchmark markdown reports found.");
+            return;
+        }
+
+        var output = new List<string> { "## Benchmark Results", "" };
+
+        foreach (var file in markdownFiles)
+        {
+            Console.WriteLine($"Processing {Path.GetFileName(file)}");
+            var content = File.ReadAllText(file);
+            output.Add(content);
+            output.Add("");
+        }
+
+        // Write to GitHub Step Summary if available
+        if (!string.IsNullOrEmpty(githubStepSummary))
+        {
+            File.AppendAllLines(githubStepSummary, output);
+            Console.WriteLine($"Benchmark results written to GitHub Step Summary");
+        }
+        else
+        {
+            // Write to console if not in GitHub Actions
+            foreach (var line in output)
+            {
+                Console.WriteLine(line);
+            }
+        }
+    }
+);
+
+Target(
+    CompareBenchmarkResults,
+    () =>
+    {
+        var githubStepSummary = Environment.GetEnvironmentVariable("GITHUB_STEP_SUMMARY");
+        var baselinePath = "tests/SharpCompress.Performance/baseline-results.md";
+
+        var output = new List<string>
+        {
+            "## Comparison with Baseline",
+            "",
+            "Baseline results are stored in tests/SharpCompress.Performance/baseline-results.md",
+            "",
+            "### Baseline Results",
+        };
+
+        if (File.Exists(baselinePath))
+        {
+            Console.WriteLine($"Reading baseline from {baselinePath}");
+            var baselineContent = File.ReadAllLines(baselinePath);
+            output.AddRange(baselineContent);
+        }
+        else
+        {
+            Console.WriteLine("Baseline file not found");
+            output.Add("Baseline file not found");
+        }
+
+        // Write to GitHub Step Summary if available
+        if (!string.IsNullOrEmpty(githubStepSummary))
+        {
+            File.AppendAllLines(githubStepSummary, output);
+            Console.WriteLine("Baseline comparison written to GitHub Step Summary");
+        }
+        else
+        {
+            // Write to console if not in GitHub Actions
+            foreach (var line in output)
+            {
+                Console.WriteLine(line);
+            }
+        }
+    }
+);
+
 Target("default", [Publish], () => Console.WriteLine("Done!"));
 
 await RunTargetsAndExitAsync(args);