name: CI

on:
  push:
  pull_request:

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      # No ruby-version input: the action auto-detects it from
      # .ruby-version when the input is omitted (not "file", which isn't
      # a recognized value and fails with "Unknown engine file").
      - uses: ruby/setup-ruby@v1
        with:
          bundler-cache: true

      - name: Ruby syntax check
        run: find app.rb config lib -name "*.rb" -print0 | xargs -0 -n1 ruby -c

      - name: App loads without errors
        run: bundle exec ruby -e 'require_relative "app"'

      - uses: actions/setup-node@v4
        with:
          node-version: "22"

      - name: JS syntax check
        run: find public/js -name "*.js" -print0 | xargs -0 -n1 node --check

  # Runs directly in the runner's own container (see the "host" label in the
  # runner's config.yaml), not in an ephemeral per-job container — that's
  # what gives this job access to /var/run/docker.sock (already mounted into
  # the runner container) and to /srv/docker (bind-mounted there too, see
  # docs/deployment.adoc). No systemd/sudo involved.
  deploy:
    needs: check
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    runs-on: host
    steps:
      # Not actions/checkout@v4: it's a JS action and host-mode jobs run
      # directly in the runner container, which has git but no Node.js.
      - name: Checkout
        run: |
          rm -rf .git * .[!.]* 2>/dev/null
          git init -q
          git remote add origin "${{ gitea.server_url }}/${{ gitea.repository }}.git"
          git -c http.extraHeader="Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
            fetch --depth 1 origin "${{ gitea.sha }}"
          git checkout -q FETCH_HEAD

      # /srv/docker/maptool is the same path inside the runner container and
      # on the real host (1:1 bind mount) — required so the relative bind
      # mount `./data:/app/data` in docker-compose.yaml resolves to the
      # correct real host path when the daemon creates the container.
      #
      # No rsync in the runner image, so this clears out everything in the
      # target except data/ (uploaded GPX files, offline.pmtiles — never
      # part of the git checkout in the first place, since it's gitignored)
      # and copies the fresh checkout over, dropping .git afterwards.
      - name: Sync to /srv/docker/maptool
        run: |
          mkdir -p /srv/docker/maptool
          for f in /srv/docker/maptool/*; do
            [ "$(basename "$f")" = "data" ] && continue
            rm -rf "$f"
          done
          cp -a . /srv/docker/maptool/
          rm -rf /srv/docker/maptool/.git

      - name: Deploy
        run: |
          cd /srv/docker/maptool
          docker compose -p maptool up --build -d