name: CI/CD Pipeline

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main ]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  test:
    name: Test & Lint
    runs-on: ubuntu-latest
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Setup Node.js
      uses: actions/setup-node@v4
      with:
        node-version: '18'
        cache: 'yarn'

    - name: Install dependencies
      run: yarn install --frozen-lockfile

    - name: Run linter
      run: yarn lint

    - name: Build project
      run: yarn build

    - name: Run validation
      run: yarn validate

  build:
    name: Build Docker Image
    runs-on: ubuntu-latest
    needs: test
    if: github.event_name == 'push'
    
    permissions:
      contents: read
      packages: write

    steps:
    - name: Checkout code
      uses: actions/checkout@v4

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

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=sha,prefix={{branch}}-
          type=raw,value=latest,enable={{is_default_branch}}

    - name: Build and push Docker image
      uses: docker/build-push-action@v5
      with:
        context: .

        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}
        cache-from: type=gha
        cache-to: type=gha,mode=max

  deploy:
    name: Deploy to Production
    runs-on: ubuntu-latest
    needs: build
    if: github.ref == 'refs/heads/main'
    environment: production
    
    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Deploy to server
      uses: appleboy/ssh-action@v1.0.0
      with:
        host: ${{ secrets.HOST }}
        username: ${{ secrets.USERNAME }}
        key: ${{ secrets.SSH_KEY }}
        port: ${{ secrets.PORT }}
        script: |
          cd /opt/quixotic
          git pull origin main
          
          # Create production environment file from secrets
          cat > .env.docker << EOF
          NODE_ENV=production
          PORT=3000
          POSTGRES_DB=${{ secrets.POSTGRES_DB }}
          POSTGRES_USER=${{ secrets.POSTGRES_USER }}  
          POSTGRES_PASSWORD=${{ secrets.POSTGRES_PASSWORD }}
          DOMAIN=${{ secrets.DOMAIN }}
          ACME_EMAIL=${{ secrets.ACME_EMAIL }}
          TRAEFIK_AUTH=${{ secrets.TRAEFIK_AUTH }}
          TELEGRAM_BOT_TOKEN=${{ secrets.TELEGRAM_BOT_TOKEN }}
          WEB_APP_URL=https://${{ secrets.DOMAIN }}
          DATABASE_URL=postgresql://${{ secrets.POSTGRES_USER }}:${{ secrets.POSTGRES_PASSWORD }}@postgres:5432/${{ secrets.POSTGRES_DB }}
          EOF
          
          # Login to GitHub Container Registry
          echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u ${{ github.actor }} --password-stdin
          
          # Pull latest image
          docker pull ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          
          # Deploy with zero downtime using production override
          docker-compose -f docker-compose.yml -f docker-compose.prod.yml --env-file .env.docker pull
          
          # Stop existing containers if they exist
          if docker-compose -f docker-compose.yml -f docker-compose.prod.yml --env-file .env.docker ps -q | grep -q .; then
            docker-compose -f docker-compose.yml -f docker-compose.prod.yml --env-file .env.docker down --remove-orphans
          fi
          
          docker-compose -f docker-compose.yml -f docker-compose.prod.yml --env-file .env.docker up -d
          
          # Cleanup old images
          docker image prune -f