name: Deploy to Production

on:
  push:
    branches: [ master ]
  release:
    types: [published]
  workflow_dispatch:
    inputs:
      tag:
        description: 'Tag to deploy'
        required: true
        default: 'latest'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ghndrx/k8s-game-2048

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        ref: ${{ github.event.release.tag_name || github.event.inputs.tag }}

    - name: Log in to Container Registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=ref,event=tag
          type=semver,pattern={{version}}
          type=semver,pattern={{major}}.{{minor}}

    - name: Build and push Docker image
      uses: docker/build-push-action@v5
      with:
        context: .
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}

    - name: Set up kubectl
      uses: azure/setup-kubectl@v3
      with:
        version: 'v1.28.0'

    - name: Configure kubectl
      run: |
        echo "${{ secrets.KUBECONFIG }}" | base64 -d > kubeconfig
        export KUBECONFIG=kubeconfig

    - name: Update image in manifests
      run: |
        TAG="${{ github.event.release.tag_name || github.event.inputs.tag }}"
        sed -i "s|ghcr.io/ghndrx/k8s-game-2048:v1.0.0|${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${TAG}|g" manifests/prod/service.yml

    - name: Deploy to production with blue-green strategy
      run: |
        export KUBECONFIG=kubeconfig
        
        # Deploy new revision with 0% traffic
        kubectl apply -f manifests/prod/
        
        # Wait for new revision to be ready
        kubectl wait --for=condition=Ready ksvc/game-2048-prod -n game-2048-prod --timeout=300s
        
        # Get the latest revision name
        LATEST_REVISION=$(kubectl get ksvc game-2048-prod -n game-2048-prod -o jsonpath='{.status.latestReadyRevisionName}')
        
        # Gradually shift traffic (10%, 50%, 100%)
        kubectl patch ksvc game-2048-prod -n game-2048-prod --type='merge' -p='{"spec":{"traffic":[{"revisionName":"'$LATEST_REVISION'","percent":10},{"latestRevision":false,"percent":90}]}}'
        sleep 60
        
        kubectl patch ksvc game-2048-prod -n game-2048-prod --type='merge' -p='{"spec":{"traffic":[{"revisionName":"'$LATEST_REVISION'","percent":50},{"latestRevision":false,"percent":50}]}}'
        sleep 60
        
        kubectl patch ksvc game-2048-prod -n game-2048-prod --type='merge' -p='{"spec":{"traffic":[{"latestRevision":true,"percent":100}]}}'

    - name: Run production health checks
      run: |
        # Wait for traffic to stabilize
        sleep 60
        # Test the production URL
        curl -f https://2048.wa.darknex.us/ || exit 1
        # Additional health checks can be added here

    - name: Get service URL
      id: get-url
      run: |
        export KUBECONFIG=kubeconfig
        SERVICE_URL=$(kubectl get ksvc game-2048-prod -n game-2048-prod -o jsonpath='{.status.url}')
        echo "service_url=$SERVICE_URL" >> $GITHUB_OUTPUT
        echo "🚀 Production service deployed at: $SERVICE_URL"

    - name: Set up Node.js for testing
      uses: actions/setup-node@v4
      with:
        node-version: '18'
        cache: 'npm'
        cache-dependency-path: tests/package.json

    - name: Install Playwright dependencies
      run: |
        cd tests
        npm install
        npx playwright install --with-deps

    - name: Run production smoke tests
      run: |
        cd tests
        BASE_URL=${{ steps.get-url.outputs.service_url }} npx playwright test environment.spec.ts
      env:
        CI: true

    - name: Run full test suite
      run: |
        cd tests
        BASE_URL=${{ steps.get-url.outputs.service_url }} npx playwright test
      env:
        CI: true

    - name: Upload production test results
      uses: actions/upload-artifact@v4
      if: always()
      with:
        name: playwright-results-production-${{ github.sha }}-${{ github.run_number }}
        path: |
          tests/playwright-report/
          tests/test-results/
        retention-days: 90

    - name: Upload production screenshots
      uses: actions/upload-artifact@v4
      if: always()
      with:
        name: screenshots-production-${{ github.sha }}-${{ github.run_number }}
        path: tests/test-results/**/*.png
        retention-days: 90

    - name: Production health validation
      run: |
        # Extended health checks for production
        echo "🔍 Running production health checks..."
        
        # Test main URL
        curl -f https://2048.wa.darknex.us/ || exit 1
        
        # Test health endpoint
        curl -f https://2048.wa.darknex.us/health || exit 1
        
        # Check response times
        RESPONSE_TIME=$(curl -o /dev/null -s -w '%{time_total}' https://2048.wa.darknex.us/)
        echo "Response time: ${RESPONSE_TIME}s"
        
        # Fail if response time > 3 seconds
        if (( $(echo "$RESPONSE_TIME > 3.0" | bc -l) )); then
          echo "❌ Response time too slow: ${RESPONSE_TIME}s"
          exit 1
        fi
        
        echo "✅ All production health checks passed!"