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 for Europe (W10-E40, N35-N70)
            mkdir -p /opt/trails-cool/segments
            EUROPE_TILES="
              W10_N50 W10_N55 W10_N60 W10_N65
              W5_N35 W5_N40 W5_N45 W5_N50 W5_N55 W5_N60 W5_N65
              E0_N35 E0_N40 E0_N45 E0_N50 E0_N55 E0_N60 E0_N65 E0_N70
              E5_N35 E5_N40 E5_N45 E5_N50 E5_N55 E5_N60 E5_N65 E5_N70
              E10_N35 E10_N40 E10_N45 E10_N50 E10_N55 E10_N60 E10_N65 E10_N70
              E15_N35 E15_N40 E15_N45 E15_N50 E15_N55 E15_N60 E15_N65 E15_N70
              E20_N35 E20_N40 E20_N45 E20_N50 E20_N55 E20_N60 E20_N65 E20_N70
              E25_N35 E25_N40 E25_N45 E25_N50 E25_N55 E25_N60 E25_N65
              E30_N35 E30_N40 E30_N45 E30_N50 E30_N55 E30_N60 E30_N65
              E35_N40 E35_N45 E35_N50 E35_N55 E35_N60
              E40_N40 E40_N45 E40_N50 E40_N55
            "
            for tile in $EUROPE_TILES; do
              [ -f "/opt/trails-cool/segments/${tile}.rd5" ] || \
                wget -q "https://brouter.de/brouter/segments4/${tile}.rd5" -O "/opt/trails-cool/segments/${tile}.rd5" 2>/dev/null || \
                rm -f "/opt/trails-cool/segments/${tile}.rd5"
            done

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

            # Annotate deploy in Grafana
            GRAFANA_TOKEN=$(grep GRAFANA_SERVICE_TOKEN .env | cut -d= -f2- 2>/dev/null)
            if [ -n "$GRAFANA_TOKEN" ]; then
              docker compose exec -T grafana curl -sf -X POST \
                -H "Authorization: Bearer $GRAFANA_TOKEN" \
                -H "Content-Type: application/json" \
                -d '{"text":"Deploy brouter ${{ github.sha }}","tags":["deploy","brouter"]}' \
                http://localhost:3000/api/annotations || true
            fi