name: Validate and Deploy Homelab

on:
  push:
    branches: [ "main" ]

jobs:
  test-and-deploy:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout Repository Code
        uses: actions/checkout@v4

      - name: Verify Compose File Validity
        env:
          DB_ROOT_PASSWORD: ${{ secrets.MYSQL_ROOT_PASSWORD }}
          DB_PASSWORD: ${{ secrets.MYSQL_PASSWORD }}
        run: docker compose config

      # --- DEPLOYMENT PHASE ---
      
      - name: Set up SSH Private Key
        run: |
          mkdir -p ~/.ssh
          echo "${{ secrets.DEPLOY_SSH_KEY }}" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          # Scan the host key to prevent SSH hanging on a manual confirmation prompt
          ssh-keyscan -H ${{ secrets.DEPLOY_HOST }} >> ~/.ssh/known_hosts

      - name: Create Remote Docker Context
        run: |
          # Define a remote endpoint pointing to your live server over SSH
          docker context create homelab-target \
            --docker "host=ssh://${{ secrets.DEPLOY_USER }}@${{ secrets.DEPLOY_HOST }}"

      - name: Deploy Containers to Live Server
        env:
          # Pass your production secrets to the live deployment step
          DB_ROOT_PASSWORD: ${{ secrets.MYSQL_ROOT_PASSWORD }}
          DB_PASSWORD: ${{ secrets.MYSQL_PASSWORD }}
        run: |
          echo "Switching Docker context to live server..."
          docker context use homelab-target
          
          echo "Pulling latest images and starting services remotely..."
          # The --project-directory . flag ensures it reads the docker-compose file fetched by Git
          docker compose --project-directory . up -d --remove-orphans