ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        ruby-version: ["3.0", "3.1", "3.2", "3.3", "3.4", "4.0"]

    steps:
      - uses: actions/checkout@v5

      - name: Set up Ruby ${{ matrix.ruby-version }}
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: ${{ matrix.ruby-version }}

      - name: Run tests
        run: ruby -Ilib -Itest -e "Dir['test/test_*.rb'].each { |f| require File.expand_path(f) }"

      - name: Verify gem builds
        run: gem build ipdata.gemspec

  # After a push to the default branch, tag the commit and create the GitHub
  # release when lib/ipdata/version.rb holds a version that is not tagged yet.
  release:
    if: github.event_name == 'push' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
    needs: test
    runs-on: ubuntu-latest
    permissions:
      contents: write
    concurrency:
      group: release
      cancel-in-progress: false
    outputs:
      tag: ${{ steps.release.outputs.tag }}
      created: ${{ steps.release.outputs.created }}

    steps:
      - uses: actions/checkout@v5

      - name: Tag and release a new version
        id: release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          version=$(sed -nE 's/.*VERSION *= *"([^"]+)".*/\1/p' lib/ipdata/version.rb | head -1)
          if [ -z "$version" ]; then
            echo "Could not read the version from lib/ipdata/version.rb" >&2
            exit 1
          fi
          tag="v${version}"
          echo "tag=${tag}" >> "$GITHUB_OUTPUT"

          status=0
          git ls-remote --exit-code --tags origin "refs/tags/${tag}" > /dev/null || status=$?
          case "$status" in
            0)
              echo "Tag ${tag} already exists; nothing to release."
              echo "created=false" >> "$GITHUB_OUTPUT"
              ;;
            2)
              gh release create "${tag}" --target "$GITHUB_SHA" --title "${tag}" --generate-notes
              echo "Created tag and release ${tag} from ${GITHUB_SHA}."
              echo "created=true" >> "$GITHUB_OUTPUT"
              ;;
            *)
              echo "Could not check whether tag ${tag} exists (git ls-remote exited with ${status})." >&2
              exit "$status"
              ;;
          esac

  # A tag created with the workflow token does not start other workflows, so
  # the gem is published from this run through the reusable release workflow.
  publish:
    needs: release
    if: needs.release.outputs.created == 'true'
    permissions:
      contents: write
      id-token: write
    uses: ./.github/workflows/release.yml
    with:
      tag: ${{ needs.release.outputs.tag }}
    secrets: inherit