# Continuous Deployment Workflow
# This workflow deploys your application to Kubernetes cluster
# Trigger: After successful CI build or manual dispatch

name: CD - Deploy to Kubernetes

# Trigger configuration - automatic after CI success, manual dispatch available
on:
  workflow_run:
    workflows: ["CI - Build and Push"]
    types:
      - completed
    branches:
      - dev
  workflow_dispatch:

# Environment variables available to all jobs
env:
  # Kubernetes configuration
  KUBECONFIG_DATA: ${{ secrets.KUBECONFIG_DATA }}
  KUBERNETES_URL: ${{ secrets.KUBERNETES_URL }}
  KUBERNETES_NAMESPACE: ${{ secrets.KUBERNETES_NAMESPACE }}
  KUBERNETES_INGRESS_HOST: ${{ secrets.KUBERNETES_INGRESS_HOST }}
  
  # Container registry configuration
  CONTAINER_REGISTRY_URL: ${{ secrets.CONTAINER_REGISTRY_URL }}
  CONTAINER_REGISTRY_USERNAME: ${{ secrets.CONTAINER_REGISTRY_USERNAME }}
  CONTAINER_REGISTRY_NAMESPACE: ${{ secrets.CONTAINER_REGISTRY_NAMESPACE }}
  CONTAINER_REGISTRY_PASSWORD: ${{ secrets.CONTAINER_REGISTRY_PASSWORD }}
  CONTAINER_IMAGE_NAME: ${{ secrets.CONTAINER_IMAGE_NAME }}
  CONTAINER_IMAGE_TAG: ${{ secrets.CONTAINER_IMAGE_TAG }}
  FORCE_RESTART: ${{ secrets.KUBERNETES_FORCE_RESTART }}

jobs:
  deploy:
    name: Deploy to Kubernetes
    runs-on: ubuntu-latest
    # Only run if CI workflow succeeded or manually dispatched
    if: ${{ github.event.workflow_run.conclusion == 'success' || github.event_name == 'workflow_dispatch' }}
    
    steps:
      # Step 1: Checkout code from repository
      - name: Checkout code
        uses: actions/checkout@v4
      
      # Step 2: Make CD script executable
      - name: Make CD script executable
        run: chmod +x script/cd.sh
      
      # Step 3: Deploy to Kubernetes
      - name: Deploy to Kubernetes
        run: ./script/cd.sh deploy
      
      # Step 4: Output deployment summary
      - name: Deployment Summary
        if: success()
        run: |
          echo "### :white_check_mark: Deployment Successful!" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Application:** \`${CONTAINER_IMAGE_NAME}\`" >> $GITHUB_STEP_SUMMARY
          echo "**Namespace:** \`${KUBERNETES_NAMESPACE}\`" >> $GITHUB_STEP_SUMMARY
          echo "**Image:** \`${CONTAINER_REGISTRY_URL}/${CONTAINER_REGISTRY_NAMESPACE}/${CONTAINER_IMAGE_NAME}:${CONTAINER_IMAGE_TAG}\`" >> $GITHUB_STEP_SUMMARY
          echo "**URL:** http://${KUBERNETES_INGRESS_HOST}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "---" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Deployment Time:** $(date -u +'%Y-%m-%d %H:%M:%S UTC')" >> $GITHUB_STEP_SUMMARY
      
      # Step 5: Output failure message
      - name: Deployment Failed
        if: failure()
        run: |
          echo "### :x: Deployment Failed!" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "Please check the logs above for error details." >> $GITHUB_STEP_SUMMARY