name: Demo Deployment

on:
  push:
    branches: [ main, master ]
    paths:
      - 'demo/**'
      - 'src/**'
      - 'vite.demo.config.js'
      - 'package.json'
  pull_request:
    branches: [ main, master ]
    paths:
      - 'demo/**'
      - 'src/**'
      - 'vite.demo.config.js'
  workflow_dispatch:
    inputs:
      environment:
        description: 'Deployment environment'
        required: true
        default: 'staging'
        type: choice
        options:
          - staging
          - production

env:
  NODE_VERSION: '20.x'

jobs:
  build-demo:
    name: Build Demo
    runs-on: ubuntu-latest

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

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Generate animation constants
      run: npm run generate:constants

    - name: Build demo application
      run: npm run build:demo
      env:
        NODE_ENV: production

    - name: Validate demo build
      run: |
        test -d dist/demo || (echo "Demo build failed - dist/demo directory not found" && exit 1)
        test -f dist/demo/index.html || (echo "Demo build failed - index.html not found" && exit 1)
        test -f dist/demo/examples.html || (echo "Demo build failed - examples.html not found" && exit 1)
        test -f dist/demo/comparison.html || (echo "Demo build failed - comparison.html not found" && exit 1)
        test -f dist/demo/interactive.html || (echo "Demo build failed - interactive.html not found" && exit 1)

    - name: Upload demo artifacts
      uses: actions/upload-artifact@v4
      with:
        name: demo-build
        path: dist/demo/
        retention-days: 30

    - name: Upload build reports
      uses: actions/upload-artifact@v4
      with:
        name: build-reports
        path: |
          dist/demo/report.html
          dist/demo/stats.json
        retention-days: 7

  test-demo:
    name: Test Demo
    runs-on: ubuntu-latest
    needs: build-demo

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

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Download demo build
      uses: actions/download-artifact@v4
      with:
        name: demo-build
        path: dist/demo/

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

    - name: Run demo tests
      run: npm run test:demo
      env:
        CI: true
        PLAYWRIGHT_BROWSERS_PATH: ${{ github.workspace }}/ms-playwright

    - name: Upload test results
      uses: actions/upload-artifact@v4
      if: always()
      with:
        name: playwright-report
        path: playwright-report/
        retention-days: 7

    - name: Upload test screenshots
      uses: actions/upload-artifact@v4
      if: failure()
      with:
        name: test-screenshots
        path: test-results/
        retention-days: 7

  lighthouse-audit:
    name: Performance Audit
    runs-on: ubuntu-latest
    needs: build-demo

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

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: ${{ env.NODE_VERSION }}
        cache: 'npm'

    - name: Install dependencies
      run: npm ci

    - name: Download demo build
      uses: actions/download-artifact@v4
      with:
        name: demo-build
        path: dist/demo/

    - name: Install Lighthouse
      run: npm install -g @lhci/cli lighthouse

    - name: Start demo server
      run: |
        npx vite preview --config vite.demo.config.js --port 3000 &
        sleep 10
      env:
        NODE_ENV: production

    - name: Run Lighthouse audit
      run: |
        lhci autorun
      env:
        LHCI_GITHUB_APP_TOKEN: ${{ secrets.LHCI_GITHUB_APP_TOKEN }}

    - name: Upload Lighthouse results
      uses: actions/upload-artifact@v4
      with:
        name: lighthouse-reports
        path: .lighthouseci/
        retention-days: 7

  deploy-staging:
    name: Deploy to Staging
    runs-on: ubuntu-latest
    needs: [build-demo, test-demo]
    if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master' || github.event.inputs.environment == 'staging'
    environment: staging

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

    - name: Download demo build
      uses: actions/download-artifact@v4
      with:
        name: demo-build
        path: dist/demo/

    - name: Deploy to staging
      uses: peaceiris/actions-gh-pages@v3
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: ./dist/demo
        publish_branch: gh-pages-staging
        force_orphan: true

    - name: Update deployment status
      run: |
        echo "Demo deployed to staging: https://${{ github.repository_owner }}.github.io/${{ github.event.repository.name }}/staging/"

  deploy-production:
    name: Deploy to Production
    runs-on: ubuntu-latest
    needs: [build-demo, test-demo, lighthouse-audit]
    if: github.ref == 'refs/heads/main' && github.event.inputs.environment == 'production'
    environment: production

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

    - name: Download demo build
      uses: actions/download-artifact@v4
      with:
        name: demo-build
        path: dist/demo/

    - name: Deploy to production
      uses: peaceiris/actions-gh-pages@v3
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: ./dist/demo
        publish_branch: gh-pages
        force_orphan: true

    - name: Update deployment status
      run: |
        echo "Demo deployed to production: https://${{ github.repository_owner }}.github.io/${{ github.event.repository.name }}/"

    - name: Create deployment notification
      uses: actions/github-script@v7
      with:
        script: |
          github.rest.repos.createDeploymentStatus({
            owner: context.repo.owner,
            repo: context.repo.repo,
            deployment_id: context.payload.deployment.id,
            state: 'success',
            environment_url: 'https://${{ github.repository_owner }}.github.io/${{ github.event.repository.name }}/',
            description: 'Demo successfully deployed'
          });