name: Build and Test Docker
on:
  push:
    paths-ignore:
      - '**.md'
      - '**.txt'
      - 'contrib/**'
  pull_request:
    paths-ignore:
      - '**.md'
      - '**.txt'
      - 'contrib/**'
env:
  CI_IMAGE: gollum-ci-img
jobs:
  build-and-test:
    runs-on: ubuntu-latest
    steps:
      - name: Install required system dependencies
        run: |
          sudo apt-get install -y libyaml-dev

      - name: Check Out Repo
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Cache Docker layers
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Build Docker image
        id: docker_build
        uses: docker/build-push-action@v6
        with:
          context: ./
          file: ./Dockerfile
          builder: ${{ steps.buildx.outputs.name }}
          push: false
          tags: ${{ env.CI_IMAGE }}
          outputs: type=docker
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

      - name: Print Docker image digest (SHA256)
        run: echo ${{ steps.docker_build.outputs.digest }}

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: 3.2
          bundler-cache: true

      - name: Install Chromedriver
        uses: nanasess/setup-chromedriver@v2

      - name: Run Capybara tests against a Dockerized Gollum instance
        run: |
          export GOLLUM_CAPYBARA_URL="http://127.0.0.1:4567"
          export RUNNER_TRACKING_ID=""
          export WIKI_ROOT="/tmp/lotr.git"

          # Clone a test wiki to run tests against.
          #
          git clone test/examples/lotr.git "$WIKI_ROOT"

          # Run a daemonized Docker instance in a normal way, then run tests.
          #
          docker run \
            --detach \
            --user $(id -u) \
            --rm \
            --publish 4567:4567 \
            --volume "$WIKI_ROOT":/wiki \
            ${{ env.CI_IMAGE }} --math katex
          bundle exec rake test:capybara