name: CD BRouter

on:
  push:
    branches: [main]
    paths:
      - "docker/brouter/**"
  workflow_dispatch: {}

concurrency:
  group: deploy-brouter
  cancel-in-progress: true

jobs:
  build:
    name: Build & Push BRouter Image
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - uses: actions/checkout@v6

      - uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - uses: docker/build-push-action@v7
        with:
          context: docker/brouter
          push: true
          tags: |
            ghcr.io/trails-cool/brouter:latest
            ghcr.io/trails-cool/brouter:${{ github.sha }}

  deploy:
    name: Deploy BRouter
    needs: [build]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Deploy via SSH
        uses: appleboy/ssh-action@v1
        with:
          host: ${{ secrets.DEPLOY_HOST }}
          username: root
          key: ${{ secrets.DEPLOY_SSH_KEY }}
          script: |
            cd /opt/trails-cool

            # Download BRouter segments if missing
            if [ ! -d /opt/trails-cool/segments ] || [ -z "$(ls /opt/trails-cool/segments/*.rd5 2>/dev/null)" ]; then
              mkdir -p /opt/trails-cool/segments
              echo "Downloading Germany BRouter segments..."
              for tile in E5_N45 E5_N50 E10_N45 E10_N50; do
                [ -f "/opt/trails-cool/segments/${tile}.rd5" ] || \
                  wget -q "https://brouter.de/brouter/segments4/${tile}.rd5" -O "/opt/trails-cool/segments/${tile}.rd5"
              done
            fi

            docker pull ghcr.io/trails-cool/brouter:latest
            docker compose up -d brouter
            docker image prune -af