CI/CD Pipelines

# .github/workflows/ci.yml
name: CI/CD Pipeline

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

jobs:
  test:
    runs-on: ubuntu-latest
    
    strategy:
      matrix:
        node-version: [18.x, 20.x]
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Use Node.js ${{ matrix.node - version }}
      uses: actions/setup-node@v3
      with:
        node-version: ${{ matrix.node - version }}
        cache: 'npm'
    
    - name: Install dependencies
      run: npm ci
    
    - name: Run linter
      run: npm run lint
    
    - name: Run tests
      run: npm test -- --coverage --watchAll=false
    
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v3
      with:
        file: ./coverage/lcov.info

# .github/workflows/deploy.yml
name: Deploy to Production

on:
  push:
    branches: [ main ]

jobs:
  deploy:
    runs-on: ubuntu-latest
    needs: test
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Use Node.js
      uses: actions/setup-node@v3
      with:
        node-version: '18.x'
        cache: 'npm'
    
    - name: Install dependencies
      run: npm ci
    
    - name: Build application
      run: npm run build
      env:
        NODE_ENV: production
    
    - name: Build Docker image
      run: docker build -t myapp:${{ github.sha }} .
    
    - name: Login to Docker Hub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}
    
    - name: Push Docker image
      run: |
        docker tag myapp:${{ github.sha }} myapp:latest
        docker push myapp:${{ github.sha }}
        docker push myapp:latest
    
    - name: Deploy to AWS ECS
      uses: aws-actions/amazon-ecs-deploy-task-definition@v1
      with:
        task-definition: task-definition.json
        service: myapp-service
        cluster: myapp-cluster

# .github/workflows/deploy-staging.yml
name: Deploy to Staging

on:
  push:
    branches: [ develop ]

jobs:
  deploy-staging:
    runs-on: ubuntu-latest
    environment: staging
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Deploy to staging
      run: |
        echo "Deploying to staging environment"
        # Add staging deployment commands here
    
    - name: Run smoke tests
      run: |
        echo "Running smoke tests against staging"
        # Add smoke test commands here

---
# .github/workflows/deploy-production.yml
name: Deploy to Production

on:
  push:
    tags:
      - 'v*'

jobs:
  deploy-production:
    runs-on: ubuntu-latest
    environment: production
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Deploy to production
      run: |
        echo "Deploying to production environment"
        # Add production deployment commands here

# .github/workflows/security.yml
name: security Scan

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

jobs:
  security:
    runs-on: ubuntu-latest
    
    steps:
    - uses: actions/checkout@v3
    
    - name: Run npm audit
      run: npm audit --audit-level moderate
    
    - name: Run Snyk security scan
      uses: snyk/actions/node@master
      env:
        SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
      with:
        args: --severity-threshold=high
    
    - name: Run CodeQL Analysis
      uses: github/codeql-action/analyze@v2
      with:
        languages: javascript

# Complete CI/CD pipeline with multiple environments
# .github/workflows/complete-pipeline.yml
name: Complete CI/CD Pipeline

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

env:
  NODE_VERSION: '18.x'
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  # Test job
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        node-version: [18.x, 20.x]
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v3
    
    - name: Setup Node.js
      uses: actions/setup-node@v3
      with:
        node-version: ${{ matrix.node - version }}
        cache: 'npm'
    
    - name: Install dependencies
      run: npm ci
    
    - name: Run linter
      run: npm run lint
    
    - name: Run tests
      run: npm test -- --coverage --watchAll=false
    
    - name: Upload coverage
      uses: codecov/codecov-action@v3

  # Build and push Docker image
  build:
    runs-on: ubuntu-latest
    needs: test
    if: github.event_name == 'push'
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v3
    
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2
    
    - name: Login to Container Registry
      uses: docker/login-action@v2
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
    
    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v4
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=sha,prefix={{branch}}-
          type=raw,value=latest,enable={{is_default_branch}}
    
    - name: Build and push Docker image
      uses: docker/build-push-action@v4
      with:
        context: .
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}

  # Deploy to staging
  deploy-staging:
    runs-on: ubuntu-latest
    needs: build
    if: github.ref == 'refs/heads/develop'
    environment: staging
    
    steps:
    - name: Deploy to staging
      run: |
        echo "Deploying to staging environment"
        # Add staging deployment commands

  # Deploy to production
  deploy-production:
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/v')
    environment: production
    
    steps:
    - name: Deploy to production
      run: |
        echo "Deploying to production environment"
        # Add production deployment commands

  # Notify deployment status
  notify:
    runs-on: ubuntu-latest
    needs: [deploy-staging, deploy-production]
    if: always()
    
    steps:
    - name: Notify Slack
      uses: 8398a7/action-slack@v3
      with:
        status: ${{ job.status }}
        channel: '#deployments'
        webhook_url: ${{ secrets.SLACK_WEBHOOK }}