performance.yml

name: Performance Benchmarks

on:
  pull_request:
    branches: [main, dev]
  workflow_dispatch:
    inputs:
      run-all:
        description: 'Run all performance tests (including slow ones)'
        required: false
        default: 'false'

permissions:
  contents: read
  pull-requests: write

jobs:
  performance:
    name: Performance Benchmarks
    runs-on: ubuntu-latest
    timeout-minutes: 30

    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup-stackwright
        with:
          build: true
          relink-bins: true

      - name: Install Playwright browsers
        run: pnpm --filter @stackwright/e2e exec playwright install --with-deps chromium

      - name: ⚡ Run build time benchmarks
        id: build-time
        env:
          PERF_NO_SERVER: '1'
        run: |
          pnpm --filter @stackwright/e2e exec playwright test tests/performance/build-time.bench.ts --reporter=list
        continue-on-error: true

      - name: 📦 Run bundle size benchmarks
        id: bundle-size
        env:
          PERF_NO_SERVER: '1'
        run: |
          pnpm --filter @stackwright/e2e exec playwright test tests/performance/bundle-size.bench.ts --reporter=list
        continue-on-error: true

      - name: 🌐 Run runtime vitals benchmarks
        id: runtime-vitals
        run: |
          pnpm --filter @stackwright/e2e exec playwright test tests/performance/runtime-vitals.bench.ts --reporter=list
        continue-on-error: true

      - name: 📊 Generate performance report
        if: always()
        run: |
          echo "## ⚡ Performance Benchmark Results" > performance-report.md
          echo "" >> performance-report.md
          
          if [ "${{ steps.build-time.outcome }}" == "success" ]; then
            echo "### ✅ Build Time Benchmarks: PASSED" >> performance-report.md
          elif [ "${{ steps.build-time.outcome }}" == "skipped" ]; then
            echo "### ⏭️ Build Time Benchmarks: SKIPPED" >> performance-report.md
          else
            echo "### ❌ Build Time Benchmarks: FAILED" >> performance-report.md
          fi
          echo "" >> performance-report.md
          
          if [ "${{ steps.bundle-size.outcome }}" == "success" ]; then
            echo "### ✅ Bundle Size Benchmarks: PASSED" >> performance-report.md
          elif [ "${{ steps.bundle-size.outcome }}" == "skipped" ]; then
            echo "### ⏭️ Bundle Size Benchmarks: SKIPPED" >> performance-report.md
          else
            echo "### ❌ Bundle Size Benchmarks: FAILED" >> performance-report.md
          fi
          echo "" >> performance-report.md
          
          if [ "${{ steps.runtime-vitals.outcome }}" == "success" ]; then
            echo "### ✅ Runtime Vitals Benchmarks: PASSED" >> performance-report.md
          elif [ "${{ steps.runtime-vitals.outcome }}" == "skipped" ]; then
            echo "### ⏭️ Runtime Vitals Benchmarks: SKIPPED" >> performance-report.md
          else
            echo "### ❌ Runtime Vitals Benchmarks: FAILED" >> performance-report.md
          fi
          echo "" >> performance-report.md
          
          echo "📝 **Note:** Detailed results are available in the job logs." >> performance-report.md
          echo "" >> performance-report.md
          echo "🎯 **Performance Budgets:**" >> performance-report.md
          echo "- Build time: <70s total" >> performance-report.md
          echo "- First-load JS: <100KB gzipped" >> performance-report.md
          echo "- FCP: <1.5s, LCP: <2.5s, TTI: <3s" >> performance-report.md

      - name: 💬 Comment PR with results
        if: github.event_name == 'pull_request'
        uses: actions/github-script@v9
        continue-on-error: true
        with:
          script: |
            const fs = require('fs');
            const report = fs.readFileSync('performance-report.md', 'utf8');
            
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            
            const botComment = comments.find(comment => 
              comment.user.type === 'Bot' && 
              comment.body.includes('Performance Benchmark Results')
            );
            
            const commentBody = `${report}\n\n---\n*Updated: ${new Date().toISOString()}*`;
            
            if (botComment) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: commentBody
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: commentBody
              });
            }

      - name: 📤 Upload performance results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: performance-results
          path: |
            performance-report.md
            packages/e2e/test-results/
          retention-days: 30

      - name: ❌ Fail if performance budgets exceeded
        if: steps.build-time.outcome == 'failure' || steps.bundle-size.outcome == 'failure' || steps.runtime-vitals.outcome == 'failure'
        run: |
          echo "❌ One or more performance benchmarks exceeded their budgets!"
          echo "Review the logs and performance-report.md for details."
          exit 1