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 and tests in parallel
        run: |
          npm run lint &
          LINT_PID=$!
          npm run test:production &
          TEST_PID=$!
          wait $LINT_PID $TEST_PID

      - name: Build application
        run: npm run build

      - name: Build Docker image
        run: |
          echo "🏗️ Building production Docker image with BuildKit cache..."
          DOCKER_BUILDKIT=1 docker build \
            --cache-from ${{ env.DOCKER_IMAGE }}:${{ env.IMAGE_TAG }} \
            --cache-from ${{ env.DOCKER_IMAGE }}:latest \
            -t ${{ env.DOCKER_IMAGE }}:${{ env.IMAGE_TAG }} \
            -t ${{ 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 "")
          
          # Export environment variables for docker-compose
          export N8N_WEBHOOK_URL="${{ vars.N8N_WEBHOOK_URL || '' }}"
          export N8N_SECRET_TOKEN="${{ secrets.N8N_SECRET_TOKEN || '' }}"
          export N8N_API_KEY="${{ vars.N8N_API_KEY || '' }}"
          
          # Also export other variables that docker-compose needs
          export MY_EMAIL="${{ vars.MY_EMAIL }}"
          export MY_INFO_EMAIL="${{ vars.MY_INFO_EMAIL }}"
          export MY_PASSWORD="${{ secrets.MY_PASSWORD }}"
          export MY_INFO_PASSWORD="${{ secrets.MY_INFO_PASSWORD }}"
          export ADMIN_BASIC_AUTH="${{ secrets.ADMIN_BASIC_AUTH }}"
          
          # Start new container with updated image (docker-compose will handle this)
          echo "🆕 Starting new production container..."
          echo "📝 Environment check: N8N_WEBHOOK_URL=${N8N_WEBHOOK_URL:-(not set)}"
          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..."
          HEALTH_CHECK_PASSED=false
          for i in {1..90}; do
            NEW_CONTAINER=$(docker ps -q -f name=$CONTAINER_NAME)
            if [ ! -z "$NEW_CONTAINER" ]; then
              # Check Docker health status first (most reliable)
              HEALTH=$(docker inspect $NEW_CONTAINER --format='{{.State.Health.Status}}' 2>/dev/null || echo "starting")
              if [ "$HEALTH" == "healthy" ]; then
                echo "✅ New container is healthy (Docker health check)!"
                # Also verify HTTP endpoint from inside container
                if docker exec $NEW_CONTAINER curl -f -s --max-time 5 http://localhost:3000/api/health > /dev/null 2>&1; then
                  echo "✅ Container HTTP endpoint is also responding!"
                  HEALTH_CHECK_PASSED=true
                  break
                else
                  echo "⚠️ Docker health check passed, but HTTP endpoint test failed. Continuing..."
                fi
              fi
              # Try HTTP health endpoint from host (may not work if port not mapped yet)
              if curl -f -s --max-time 2 http://localhost:$HEALTH_PORT/api/health > /dev/null 2>&1; then
                echo "✅ New container is responding to HTTP health check from host!"
                HEALTH_CHECK_PASSED=true
                break
              fi
              # Show container status for debugging
              if [ $((i % 10)) -eq 0 ]; then
                echo "📊 Container status: $(docker inspect $NEW_CONTAINER --format='{{.State.Status}}' 2>/dev/null || echo 'unknown')"
                echo "📊 Health status: $HEALTH"
                echo "📊 Testing from inside container:"
                docker exec $NEW_CONTAINER curl -f -s --max-time 2 http://localhost:3000/api/health 2>&1 | head -1 || echo "Container HTTP test failed"
                docker compose -f $COMPOSE_FILE logs --tail=5 portfolio 2>/dev/null || true
              fi
            fi
            echo "⏳ Waiting... ($i/90)"
            sleep 2
          done
          
          # Final verification: Check Docker health status (most reliable)
          NEW_CONTAINER=$(docker ps -q -f name=$CONTAINER_NAME)
          if [ ! -z "$NEW_CONTAINER" ]; then
            FINAL_HEALTH=$(docker inspect $NEW_CONTAINER --format='{{.State.Health.Status}}' 2>/dev/null || echo "unknown")
            if [ "$FINAL_HEALTH" == "healthy" ]; then
              echo "✅ Final verification: Container is healthy!"
              HEALTH_CHECK_PASSED=true
            fi
          fi
          
          # Verify new container is working
          if [ "$HEALTH_CHECK_PASSED" != "true" ]; then
            echo "❌ New container failed health check!"
            echo "📋 Container logs:"
            docker compose -f $COMPOSE_FILE logs --tail=100 portfolio
            echo "📋 Container inspect:"
            docker inspect $NEW_CONTAINER 2>/dev/null || echo "Container not found"
            echo "📋 Testing health endpoint from inside container:"
            docker exec $NEW_CONTAINER curl -v http://localhost:3000/api/health 2>&1 || echo "Container HTTP test failed"
            echo "📋 Testing health endpoint from host:"
            curl -v http://localhost:$HEALTH_PORT/api/health 2>&1 || echo "Host HTTP test failed"
            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 || '' }}
          N8N_API_KEY: ${{ vars.N8N_API_KEY || '' }}

      - 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"