name: Accessibility Tests

on:
  pull_request:
    branches: [main, master]
  push:
    branches: [main, master]

jobs:
  accessibility:
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Build application
        run: npm run build

      - name: Install Playwright browsers
        run: npx playwright install --with-deps chromium

      - name: Start application server
        run: |
          npm start &
          echo $! > .app-pid

      - name: Wait for server to be ready
        run: npx wait-on http://localhost:3000 -t 60000

      - name: Run accessibility tests
        id: a11y_tests
        continue-on-error: true
        run: npm run test:a11y

      - name: Setup Python
        if: always()
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Generate accessibility report
        if: always()
        run: |
          python scripts/generate_a11y_report.py \
            --input test-results/a11y-results.json \
            --output accessibility-report.md \
            --format github

      - name: Comment PR with report
        if: github.event_name == 'pull_request' && always()
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs')

            try {
              const report = fs.readFileSync('accessibility-report.md', 'utf8')

              // Find existing comment
              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('Accessibility Test Report')
              )

              const commentBody = report + '\n\n---\n*Automated accessibility check*'

              if (botComment) {
                // Update existing comment
                await github.rest.issues.updateComment({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  comment_id: botComment.id,
                  body: commentBody
                })
              } else {
                // Create new comment
                await github.rest.issues.createComment({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: context.issue.number,
                  body: commentBody
                })
              }
            } catch (error) {
              console.error('Error posting comment:', error)
            }

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

      - name: Upload Playwright report
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: playwright-report
          path: playwright-report/
          retention-days: 30

      - name: Stop application server
        if: always()
        run: |
          if [ -f .app-pid ]; then
            kill $(cat .app-pid) || true
          fi

      - name: Fail job if violations found
        if: steps.a11y_tests.outcome == 'failure'
        run: |
          echo "[ERROR] Accessibility violations found"
          exit 1