name: Deploy to Kubernetes

on:
  workflow_dispatch:
    inputs:
      environment:
        description: 'Deployment environment'
        required: true
        default: 'production'
        type: choice
        options:
          - production
          - staging
      image_tag:
        description: 'Docker image tag (optional, defaults to commit SHA)'
        required: false
        type: string

env:
  APP_NAME: www-cialloo-com
  REGISTRY: ${{ secrets.DOCKER_REGISTRY }}
  IMAGE_NAME: ${{ secrets.DOCKER_REGISTRY }}/${{ secrets.DOCKER_REPOSITORY }}

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    environment: ${{ github.event.inputs.environment || 'production' }}
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 'latest'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Run linting
        run: npm run lint

      - name: Build application
        run: npm run build

      - name: Set image tag
        id: image-tag
        run: |
          if [ -n "${{ github.event.inputs.image_tag }}" ]; then
            echo "tag=${{ github.event.inputs.image_tag }}" >> $GITHUB_OUTPUT
          else
            echo "tag=${{ github.sha }}" >> $GITHUB_OUTPUT
          fi

      - name: Log in to Docker Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ secrets.DOCKER_REGISTRY }}
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: |
            ${{ env.IMAGE_NAME }}:${{ steps.image-tag.outputs.tag }}
            ${{ env.IMAGE_NAME }}:latest
          cache-from: type=gha
          cache-to: type=gha,mode=max

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

      - name: Configure kubectl
        run: |
          mkdir -p $HOME/.kube
          echo "${{ secrets.KUBECONFIG }}" | base64 -d > $HOME/.kube/config
          chmod 600 $HOME/.kube/config

      - name: Verify cluster connection
        run: kubectl cluster-info

      - name: Deploy to Kubernetes
        run: |
          # Replace placeholders in k8s manifests
          sed -i "s|{{IMAGE_TAG}}|${{ steps.image-tag.outputs.tag }}|g" k8s/deployment.yaml
          sed -i "s|{{IMAGE_NAME}}|${{ env.IMAGE_NAME }}|g" k8s/deployment.yaml
          sed -i "s|{{ENVIRONMENT}}|${{ github.event.inputs.environment || 'production' }}|g" k8s/deployment.yaml
          sed -i "s|{{ENVIRONMENT}}|${{ github.event.inputs.environment || 'production' }}|g" k8s/service.yaml
          sed -i "s|{{ENVIRONMENT}}|${{ github.event.inputs.environment || 'production' }}|g" k8s/namespace.yaml
          sed -i "s|{{ENVIRONMENT}}|${{ github.event.inputs.environment || 'production' }}|g" k8s/ingress.yaml
          
          # Apply manifests
          kubectl apply -f k8s/namespace.yaml
          kubectl apply -f k8s/deployment.yaml
          kubectl apply -f k8s/service.yaml
          kubectl apply -f k8s/ingress.yaml

      - name: Wait for deployment to be ready
        run: |
          kubectl rollout status deployment/${{ env.APP_NAME }} -n ${{ env.APP_NAME }}-${{ github.event.inputs.environment || 'production' }} --timeout=300s

      - name: Get deployment status
        run: |
          echo "### Deployment Status" >> $GITHUB_STEP_SUMMARY
          kubectl get pods -n ${{ env.APP_NAME }}-${{ github.event.inputs.environment || 'production' }} -o wide >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          kubectl get services -n ${{ env.APP_NAME }}-${{ github.event.inputs.environment || 'production' }} >> $GITHUB_STEP_SUMMARY

      - name: Notify deployment success
        if: success()
        run: |
          echo "✅ Deployment successful!"
          echo "Image: ${{ env.IMAGE_NAME }}:${{ steps.image-tag.outputs.tag }}"
          echo "Environment: ${{ github.event.inputs.environment || 'production' }}"

      - name: Notify deployment failure
        if: failure()
        run: |
          echo "❌ Deployment failed!"
          kubectl describe pods -n ${{ env.APP_NAME }}-${{ github.event.inputs.environment || 'production' }} || true