name: Build and Deploy

on:
  push:
    branches: [main, decoupling]

env:
  REGISTRY: registry.rose-ash.com:5000
  COOP_DIR: /root/rose-ash

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install tools
        run: |
          apt-get update && apt-get install -y --no-install-recommends openssh-client

      - name: Set up SSH
        env:
          SSH_KEY: ${{ secrets.DEPLOY_SSH_KEY }}
          DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
        run: |
          mkdir -p ~/.ssh
          echo "$SSH_KEY" > ~/.ssh/id_rsa
          chmod 600 ~/.ssh/id_rsa
          ssh-keyscan -H "$DEPLOY_HOST" >> ~/.ssh/known_hosts 2>/dev/null || true

      - name: Build and deploy changed apps
        env:
          DEPLOY_HOST: ${{ secrets.DEPLOY_HOST }}
        run: |
          ssh "root@$DEPLOY_HOST" "
            cd ${{ env.COOP_DIR }}
            git fetch origin ${{ github.ref_name }}

            # Detect what changed since current HEAD
            CHANGED=\$(git diff --name-only HEAD origin/${{ github.ref_name }})
            git reset --hard origin/${{ github.ref_name }}

            REBUILD_ALL=false
            if echo \"\$CHANGED\" | grep -q '^shared/'; then
              REBUILD_ALL=true
            fi
            if echo \"\$CHANGED\" | grep -q '^docker-compose.yml'; then
              REBUILD_ALL=true
            fi

            for app in blog market cart events federation account; do
              if [ \"\$REBUILD_ALL\" = true ] || echo \"\$CHANGED\" | grep -q \"^\$app/\"; then
                echo \"Building \$app...\"
                docker build \
                  --build-arg CACHEBUST=\$(date +%s) \
                  -f \$app/Dockerfile \
                  -t ${{ env.REGISTRY }}/\$app:latest \
                  -t ${{ env.REGISTRY }}/\$app:${{ github.sha }} \
                  .
                docker push ${{ env.REGISTRY }}/\$app:latest
                docker push ${{ env.REGISTRY }}/\$app:${{ github.sha }}
              else
                echo \"Skipping \$app (no changes)\"
              fi
            done

            source .env
            docker stack deploy -c docker-compose.yml coop
            echo 'Waiting for services to update...'
            sleep 10
            docker stack services coop
          "