name: Production Deployment (Zero Downtime)

on:
  push:
    branches: [ production ]

env:
  NODE_VERSION: '20'
  DOCKER_IMAGE: portfolio-app
  IMAGE_TAG: production

jobs:
  deploy-production:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

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

      - name: Install dependencies
        run: npm ci

      - name: Run linting
        run: npm run lint

      - name: Run tests
        run: npm run test:production

      - name: Build application
        run: npm run build

      - name: Build Docker image
        run: |
          echo "🏗️ Building production Docker image..."
          docker build -t ${{ env.DOCKER_IMAGE }}:${{ env.IMAGE_TAG }} .
          docker tag ${{ env.DOCKER_IMAGE }}:${{ env.IMAGE_TAG }} ${{ env.DOCKER_IMAGE }}:latest
          echo "✅ Docker image built successfully"

      - name: Zero-Downtime Production Deployment
        run: |
          echo "🚀 Starting zero-downtime production deployment..."
          
          COMPOSE_FILE="docker-compose.production.yml"
          CONTAINER_NAME="portfolio-app"
          HEALTH_PORT="3000"
          
          # Backup current container ID if running
          OLD_CONTAINER=$(docker ps -q -f name=$CONTAINER_NAME || echo "")
          
          # Start new container with updated image (docker-compose will handle this)
          echo "🆕 Starting new production container..."
          docker compose -f $COMPOSE_FILE up -d --no-deps --build portfolio
          
          # Wait for new container to be healthy
          echo "⏳ Waiting for new container to be healthy..."
          for i in {1..60}; do
            NEW_CONTAINER=$(docker ps -q -f name=$CONTAINER_NAME)
            if [ ! -z "$NEW_CONTAINER" ]; then
              # Check health status
              HEALTH=$(docker inspect $NEW_CONTAINER --format='{{.State.Health.Status}}' 2>/dev/null || echo "starting")
              if [ "$HEALTH" == "healthy" ]; then
                echo "✅ New container is healthy!"
                break
              fi
              # Also check HTTP health endpoint
              if curl -f http://localhost:$HEALTH_PORT/api/health > /dev/null 2>&1; then
                echo "✅ New container is responding!"
                break
              fi
            fi
            echo "⏳ Waiting... ($i/60)"
            sleep 2
          done
          
          # Verify new container is working
          if ! curl -f http://localhost:$HEALTH_PORT/api/health > /dev/null 2>&1; then
            echo "❌ New container failed health check!"
            docker compose -f $COMPOSE_FILE logs --tail=50 portfolio
            exit 1
          fi
          
          # Remove old container if it exists and is different
          if [ ! -z "$OLD_CONTAINER" ]; then
            NEW_CONTAINER=$(docker ps -q -f name=$CONTAINER_NAME)
            if [ "$OLD_CONTAINER" != "$NEW_CONTAINER" ]; then
              echo "🧹 Removing old container..."
              docker stop $OLD_CONTAINER 2>/dev/null || true
              docker rm $OLD_CONTAINER 2>/dev/null || true
            fi
          fi
          
          echo "✅ Production deployment completed with zero downtime!"
        env:
          NODE_ENV: production
          LOG_LEVEL: ${{ vars.LOG_LEVEL || 'info' }}
          NEXT_PUBLIC_BASE_URL: ${{ vars.NEXT_PUBLIC_BASE_URL || 'https://dk0.dev' }}
          MY_EMAIL: ${{ vars.MY_EMAIL }}
          MY_INFO_EMAIL: ${{ vars.MY_INFO_EMAIL }}
          MY_PASSWORD: ${{ secrets.MY_PASSWORD }}
          MY_INFO_PASSWORD: ${{ secrets.MY_INFO_PASSWORD }}
          ADMIN_BASIC_AUTH: ${{ secrets.ADMIN_BASIC_AUTH }}
          N8N_WEBHOOK_URL: ${{ vars.N8N_WEBHOOK_URL || '' }}
          N8N_SECRET_TOKEN: ${{ secrets.N8N_SECRET_TOKEN || '' }}

      - name: Production Health Check
        run: |
          echo "🔍 Running production health checks..."
          for i in {1..20}; do
            if curl -f http://localhost:3000/api/health && curl -f http://localhost:3000/ > /dev/null; then
              echo "✅ Production is fully operational!"
              exit 0
            fi
            echo "⏳ Waiting for production... ($i/20)"
            sleep 3
          done
          echo "❌ Production health check failed!"
          docker compose -f docker-compose.production.yml logs --tail=50
          exit 1

      - name: Cleanup
        run: |
          echo "🧹 Cleaning up old images..."
          docker image prune -f
          echo "✅ Cleanup completed"