name: Deploy to Production

on:
  push:
    branches:
      - main
      - production
  workflow_dispatch:
    inputs:
      force_rebuild:
        description: 'Force rebuild Docker image'
        required: false
        default: 'false'
      skip_backup:
        description: 'Skip database backup (not recommended)'
        required: false
        default: 'false'

env:
  REGISTRY: localhost:5000
  IMAGE_NAME: framework
  IMAGE_TAG: latest
  COMPOSE_PROJECT_NAME: framework-production

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Build Docker image
        run: |
          echo "Building Docker image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}"
          docker build \
            --file docker/php/Dockerfile \
            --tag ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }} \
            --build-arg ENV=production \
            --build-arg COMPOSER_INSTALL_FLAGS="--no-dev --optimize-autoloader --no-interaction" \
            .

      - name: Push image to private registry
        run: |
          echo "Pushing image to registry..."
          docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}

      - name: Prepare deployment files
        run: |
          echo "Preparing deployment files..."
          mkdir -p deployment-production
          cp docker-compose.base.yml deployment-production/
          cp docker-compose.prod.yml deployment-production/
          cp -r docker deployment-production/

          # Create deployment script
          cat > deployment-production/deploy.sh << 'EOF'
          #!/bin/bash
          set -e

          echo "=================================================="
          echo "Starting Production Deployment"
          echo "=================================================="
          echo ""

          # Database backup (unless explicitly skipped)
          if [ "${SKIP_BACKUP}" != "true" ]; then
            echo "[0/6] Creating database backup..."
            BACKUP_FILE="backup_$(date +%Y%m%d_%H%M%S).sql"
            docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml exec -T production-app \
              php console.php db:backup --output="/var/www/html/storage/backups/${BACKUP_FILE}" || {
                echo "⚠️  Database backup failed - deployment aborted"
                exit 1
              }
            echo "✅ Database backup created: ${BACKUP_FILE}"
          else
            echo "⚠️  Database backup skipped (not recommended for production)"
          fi

          # Pull latest images
          echo "[1/6] Pulling latest Docker images..."
          docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml pull

          # Stop existing containers gracefully
          echo "[2/6] Stopping existing containers (graceful shutdown)..."
          docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml stop

          # Start new containers
          echo "[3/6] Starting new containers..."
          docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml up -d

          # Wait for services to be healthy (longer timeout for production)
          echo "[4/6] Waiting for services to be healthy..."
          sleep 30

          # Run database migrations
          echo "[5/6] Running database migrations..."
          docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml exec -T production-app \
            php console.php db:migrate --force || {
              echo "⚠️  Database migration failed"
              exit 1
            }

          # Verify deployment
          echo "[6/6] Verifying deployment..."
          docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml ps

          # Cleanup old containers
          echo "Cleaning up old containers..."
          docker system prune -f

          echo ""
          echo "=================================================="
          echo "Production Deployment Complete"
          echo "=================================================="
          EOF

          chmod +x deployment-production/deploy.sh

      - name: Deploy to production server
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          script: |
            # Create deployment directory
            mkdir -p /opt/framework-production
            cd /opt/framework-production

            # Backup current deployment
            if [ -d "current" ]; then
              echo "Backing up current deployment..."
              timestamp=$(date +%Y%m%d_%H%M%S)
              mv current "backup_${timestamp}"
              # Keep only last 10 backups for production
              ls -dt backup_* | tail -n +11 | xargs rm -rf
            fi

            # Create new deployment directory
            mkdir -p current
            cd current

      - name: Copy deployment files
        uses: appleboy/scp-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          source: "deployment-production/*"
          target: "/opt/framework-production/current/"
          strip_components: 1

      - name: Execute deployment
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          script: |
            cd /opt/framework-production/current

            # Set skip backup flag if provided
            export SKIP_BACKUP="${{ github.event.inputs.skip_backup || 'false' }}"

            # Execute deployment script
            ./deploy.sh

      - name: Health check
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          script: |
            cd /opt/framework-production/current

            # Wait for services to be fully ready (longer for production)
            echo "Waiting 60 seconds for services to initialize..."
            sleep 60

            # Check container status
            echo "Checking container status..."
            docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml ps

            # Check service health
            echo "Checking service health..."
            docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml exec -T production-app php -v

            # Check PHP-FPM is running
            echo "Checking PHP-FPM process..."
            docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml exec -T production-app pgrep php-fpm

            # Test HTTP endpoint (via Traefik)
            echo "Testing production endpoint..."
            curl -f -k https://michaelschiemer.de/health || {
              echo "⚠️  Health check endpoint failed"
              exit 1
            }

            # Check Redis connection
            echo "Checking Redis connection..."
            docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml exec -T production-redis redis-cli ping

            echo ""
            echo "✅ All health checks passed!"

      - name: Smoke tests
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          script: |
            echo "Running production smoke tests..."

            # Test main page
            curl -f -k https://michaelschiemer.de/ > /dev/null 2>&1 && echo "✅ Main page accessible" || {
              echo "❌ Main page failed"
              exit 1
            }

            # Test API health
            curl -f -k https://michaelschiemer.de/api/health > /dev/null 2>&1 && echo "✅ API health check passed" || {
              echo "❌ API health check failed"
              exit 1
            }

            echo "✅ Smoke tests completed successfully"

      - name: Rollback on failure
        if: failure()
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          script: |
            cd /opt/framework-production

            if [ -d "$(ls -dt backup_* 2>/dev/null | head -n1)" ]; then
              echo "🚨 Rolling back to previous deployment..."
              latest_backup=$(ls -dt backup_* | head -n1)

              # Stop current broken deployment
              cd current
              docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml down
              cd ..

              # Restore backup
              rm -rf current
              cp -r "$latest_backup" current

              # Start restored deployment
              cd current
              docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml up -d

              # Wait for services
              sleep 30

              # Verify rollback
              docker-compose -f docker-compose.base.yml -f docker-compose.prod.yml ps

              echo "✅ Rollback complete - previous version restored"
            else
              echo "❌ No backup available for rollback"
              echo "⚠️  MANUAL INTERVENTION REQUIRED"
              exit 1
            fi

      - name: Notify deployment status
        if: always()
        uses: appleboy/ssh-action@master
        with:
          host: ${{ secrets.PRODUCTION_HOST }}
          username: ${{ secrets.PRODUCTION_USER }}
          key: ${{ secrets.PRODUCTION_SSH_KEY }}
          port: ${{ secrets.PRODUCTION_SSH_PORT || 22 }}
          script: |
            if [ "${{ job.status }}" == "success" ]; then
              echo "✅ Production deployment successful"
              echo "URL: https://michaelschiemer.de"
              echo "Deployed at: $(date)"

              # Log deployment
              echo "$(date) - Deployment SUCCESS - Commit: ${{ github.sha }}" >> /opt/framework-production/deployment.log
            else
              echo "❌ Production deployment failed - rollback executed"

              # Log deployment failure
              echo "$(date) - Deployment FAILED - Commit: ${{ github.sha }}" >> /opt/framework-production/deployment.log

              # Send alert (placeholder - implement actual alerting)
              echo "⚠️  ALERT: Production deployment failed. Manual intervention may be required."
            fi

      - name: Clean up build artifacts
        if: always()
        run: |
          echo "Cleaning up deployment artifacts..."
          rm -rf deployment-production
          echo "✅ Cleanup complete"