name: Deploy Backend

on:
  # push:
  #   branches: [ main ]
  #   paths: 
  #     - 'backend/**'
  #     - 'Dockerfile'
  #     - '.github/workflows/deploy_backend.yml'
  workflow_dispatch:

env:
  IMAGE_NAME: license-manager-backend
  CONTAINER_NAME: license-manager

jobs:
  deploy:
    runs-on: ubuntu-latest
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Set up Go
      uses: actions/setup-go@v4
      with:
        go-version: '1.23'

    - name: Build and test backend
      run: |
        cd backend
        go mod tidy
        go mod verify
        go test ./...
        go build -ldflags="-s -w" -o license-manager cmd/main.go

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3

    - name: Build Docker image
      run: |
        docker build -f Dockerfile.backend -t ${{ env.IMAGE_NAME }}:latest .
        docker save ${{ env.IMAGE_NAME }}:latest > backend-image.tar

    - name: Copy files to server
      uses: appleboy/scp-action@v0.1.7
      with:
        host: ${{ secrets.HOST_PI }}
        username: pi
        password: ${{ secrets.PASS_PI }}
        port: 22
        source: "backend-image.tar"
        target: "/home/pi/license-manager/"

    - name: Deploy to server
      uses: appleboy/ssh-action@v1.0.3
      with:
        host: ${{ secrets.HOST_PI }}
        username: pi
        password: ${{ secrets.PASS_PI }}
        port: 22
        script: |
          cd /home/pi/license-manager
          
          # Stop and remove existing container
          docker stop ${{ env.CONTAINER_NAME }} || true
          docker rm ${{ env.CONTAINER_NAME }} || true
          
          # Load new image
          docker load < backend-image.tar
          
          # Remove old image
          docker rmi ${{ env.IMAGE_NAME }}:old || true
          docker tag ${{ env.IMAGE_NAME }}:latest ${{ env.IMAGE_NAME }}:old || true
          
          # Run new container with host network
          docker run -d \
            --name ${{ env.CONTAINER_NAME }} \
            --restart unless-stopped \
            --network host \
            -v /home/pi/license-manager/logs:/app/logs \
            ${{ env.IMAGE_NAME }}:latest
          
          # Clean up
          rm -f backend-image.tar
          docker image prune -f
          
          # Check deployment status
          sleep 5
          if docker ps | grep -q ${{ env.CONTAINER_NAME }}; then
            echo "✅ Deployment successful! Container is running."
            docker logs --tail 10 ${{ env.CONTAINER_NAME }}
          else
            echo "❌ Deployment failed! Container is not running."
            docker logs ${{ env.CONTAINER_NAME }}
            exit 1
          fi

    - name: Health check
      run: |
        sleep 10
        response=$(curl -s -o /dev/null -w "%{http_code}" http://${{ secrets.HOST_PI }}:18888/health || echo "000")
        if [ "$response" = "200" ]; then
          echo "✅ Health check passed! Service is responding."
        else
          echo "⚠️  Health check returned status: $response"
          echo "Service may still be starting up..."
        fi