name: Deploy Stacks

on:
  push:
    branches: [master]
    paths:
      - 'stacks/**'
  workflow_dispatch:

env:
  STACKS_DIR: /var/core

jobs:
  deploy:
    runs-on: ubuntu-prod
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - name: Find and deploy changed stacks
        env:
          DOMAIN: ${{ secrets.DOMAIN }}
        run: |
          # Find changed stacks
          STACKS=$(git diff --name-only HEAD~1 HEAD 2>/dev/null | grep '^stacks/' | cut -d'/' -f2 | sort -u || echo "")

          if [ -z "$STACKS" ]; then
            echo "No stacks changed, deploying all..."
            STACKS=$(ls stacks/)
          fi

          echo "Deploying: $STACKS"

          for stack in $STACKS; do
            echo "=========================================="
            echo "Deploying $stack..."
            echo "=========================================="

            STACK_DIR="${{ env.STACKS_DIR }}/$stack"
            mkdir -p "$STACK_DIR"

            # Copy files
            cp -r stacks/$stack/* "$STACK_DIR/"

            # Create .env from template if exists
            if [ -f "$STACK_DIR/.env.template" ]; then
              envsubst < "$STACK_DIR/.env.template" > "$STACK_DIR/.env"
            fi

            # Deploy
            cd "$STACK_DIR"
            docker compose pull --ignore-pull-failures 2>/dev/null || true
            docker compose up -d --remove-orphans

            echo "✅ Deployed $stack"
            echo ""
          done

      - name: Show running containers
        run: docker ps --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" | head -20