pr-automation.yml

name: PR Automation
# Story 6.1: Simplified to metrics-only (validation moved to ci.yml)
# Purpose: Coverage reporting, quality summary, and metrics recording

on:
  pull_request:
    branches:
      - main
    types: [opened, synchronize, reopened]

concurrency:
  group: pr-automation-${{ github.event.pull_request.number }}
  cancel-in-progress: true

permissions:
  contents: write
  pull-requests: write
  checks: write

env:
  NODE_VERSION: '20'

jobs:
  # ============================================================================
  # COVERAGE EXTRACTION & REPORTING
  # ============================================================================

  coverage-report:
    name: Coverage Report
    runs-on: ubuntu-latest
    timeout-minutes: 10
    outputs:
      coverage-summary: ${{ steps.coverage.outputs.summary }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run tests with coverage
        run: npm run test:coverage
        continue-on-error: true

      - name: Extract coverage summary
        id: coverage
        run: |
          if [ -f coverage/coverage-summary.json ]; then
            LINES=$(jq '.total.lines.pct' coverage/coverage-summary.json)
            STATEMENTS=$(jq '.total.statements.pct' coverage/coverage-summary.json)
            BRANCHES=$(jq '.total.branches.pct' coverage/coverage-summary.json)
            FUNCTIONS=$(jq '.total.functions.pct' coverage/coverage-summary.json)
            echo "summary=Lines: ${LINES}% | Statements: ${STATEMENTS}% | Branches: ${BRANCHES}% | Functions: ${FUNCTIONS}%" >> $GITHUB_OUTPUT
          else
            echo "summary=Coverage report not available" >> $GITHUB_OUTPUT
          fi

      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v6
        with:
          files: ./coverage/lcov.info
          flags: unittests
          name: codecov-umbrella
          fail_ci_if_error: false

  # ============================================================================
  # PR COMMENTS (Coverage + Quality Summary)
  # ============================================================================

  post-comments:
    name: Post PR Comments
    runs-on: ubuntu-latest
    needs: [coverage-report]
    if: always()
    steps:
      - name: Post coverage comment
        uses: actions/github-script@v9
        with:
          script: |
            const coverageSummary = '${{ needs.coverage-report.outputs.coverage-summary }}' || 'Coverage data not available';

            const body = `## 📊 Coverage Report

            ${coverageSummary}

            > 📈 Full coverage report available in [Codecov](https://codecov.io/gh/${{ github.repository }}/pull/${{ github.event.pull_request.number }})

            ---
            *Generated by PR Automation (Story 6.1)*
            `;

            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('📊 Coverage Report')
            );

            if (botComment) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: botComment.id,
                body: body
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: body
              });
            }

  # ============================================================================
  # CODERABBIT STATUS CHECK
  # ============================================================================

  coderabbit-check:
    name: CodeRabbit Status
    runs-on: ubuntu-latest
    timeout-minutes: 2
    steps:
      - name: Verify CodeRabbit config exists
        uses: actions/checkout@v6
        with:
          sparse-checkout: .coderabbit.yaml
          sparse-checkout-cone-mode: false

      - name: Validate config
        run: |
          echo "🐰 CodeRabbit Integration Status"
          echo "================================"
          if [ -f ".coderabbit.yaml" ]; then
            echo "✅ CodeRabbit configuration found"
          else
            echo "⚠️ CodeRabbit configuration not found"
          fi
          echo ""
          echo "Note: CodeRabbit reviews are handled by the GitHub App"

  # ============================================================================
  # METRICS RECORDING (Story 3.11c)
  # ============================================================================

  record-metrics:
    name: Record Quality Metrics
    runs-on: ubuntu-latest
    needs: [coverage-report]
    if: always()
    steps:
      - name: Checkout code
        uses: actions/checkout@v6
        with:
          ref: ${{ github.head_ref }}
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Record PR metrics
        env:
          COVERAGE_RESULT: ${{ needs.coverage-report.result }}
          PR_NUMBER: ${{ github.event.pull_request.number }}
          BRANCH_NAME: ${{ github.head_ref }}
          AUTHOR: ${{ github.actor }}
        run: |
          node -e "
            const { recordPRReviewMetrics } = require('./.aiox-core/quality/metrics-hook');
            (async () => {
              const passed = process.env.COVERAGE_RESULT === 'success';
              await recordPRReviewMetrics({
                passed,
                durationMs: 180000,
                findingsCount: 0,
                metadata: {
                  prNumber: parseInt(process.env.PR_NUMBER, 10),
                  branchName: process.env.BRANCH_NAME,
                  author: process.env.AUTHOR,
                  coverageResult: process.env.COVERAGE_RESULT
                }
              });
              console.log('✅ PR metrics recorded');
            })().catch(err => {
              console.warn('⚠️ Failed to record metrics:', err.message);
              process.exit(0);
            });
          "

      - name: Commit metrics update
        run: |
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"

          # Check if metrics file exists and is not gitignored
          if [ -f .aiox/data/quality-metrics.json ]; then
            if git check-ignore -q .aiox/data/quality-metrics.json 2>/dev/null; then
              echo "ℹ️ Metrics file is gitignored - skipping commit"
            else
              git add .aiox/data/quality-metrics.json
            fi
          fi

          if ! git diff --staged --quiet; then
            git commit -m "chore(metrics): update quality metrics [skip ci]"
            git push || echo "Push skipped (may conflict with parallel runs)"
          else
            echo "ℹ️ No metrics changes to commit"
          fi