benchmarks.yml

name: Benchmarks

on:
  push:
    branches: [ main ]
    paths:
      - 'src/**'
      - 'test/FunctionalStateMachine.Benchmarks/**'
  pull_request:
    branches: [ main ]
    paths:
      - 'src/**'
      - 'test/FunctionalStateMachine.Benchmarks/**'
  workflow_dispatch:

permissions:
  contents: read
  pull-requests: write

jobs:
  benchmark:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout
        uses: actions/checkout@v6

      - name: Setup .NET
        uses: actions/setup-dotnet@v5
        with:
          dotnet-version: "9.0.x"

      - name: Restore
        run: dotnet restore test/FunctionalStateMachine.Benchmarks/FunctionalStateMachine.Benchmarks.csproj

      - name: Build
        run: dotnet build test/FunctionalStateMachine.Benchmarks/FunctionalStateMachine.Benchmarks.csproj --configuration Release --no-restore

      - name: Run Benchmarks
        run: dotnet run --project test/FunctionalStateMachine.Benchmarks/FunctionalStateMachine.Benchmarks.csproj --configuration Release --no-build

      - name: Upload Results
        uses: actions/upload-artifact@v6
        if: always()
        with:
          name: benchmark-results
          path: test/FunctionalStateMachine.Benchmarks/BenchmarkDotNet.Artifacts/results/
          retention-days: 30

      - name: Comment PR with Results
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v8
        with:
          script: |
            const fs = require('fs');
            const markdownPath = 'test/FunctionalStateMachine.Benchmarks/BenchmarkDotNet.Artifacts/results/StateMachineBenchmarks-report-github.md';
            
            if (fs.existsSync(markdownPath)) {
              const markdown = fs.readFileSync(markdownPath, 'utf8');
              
              await github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: `## 🚀 Benchmark Results\n\n${markdown}`
              });
            }