ruby-release.yml

name: "[Ruby] Release"

on:
  push:
    tags:
      - ruby-v*
  workflow_dispatch:
    inputs:
      dry_run:
        description: "Build and smoke-test the gems without publishing them"
        type: boolean
        default: true

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  cross-gem:
    name: Compile native gem for ${{ matrix.platform }}
    runs-on: ubuntu-22.04
    env:
      RUBY_VERSIONS: "3.2,3.3,3.4,4.0"

    strategy:
      fail-fast: false
      matrix:
        platform:
          - aarch64-linux
          - aarch64-linux-musl
          - arm64-darwin
          - x64-mingw-ucrt
          - x86_64-darwin
          - x86_64-linux
          - x86_64-linux-musl

    steps:
      - uses: actions/checkout@v7

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: "3.2"
          bundler-cache: true
          working-directory: ./crates/css-inline-ruby

      # `cross-gem` picks the toolchain from the first `rb_sys` line of the root
      # `Gemfile.lock`. Copying the file wholesale hands it the `PATH` section's
      # `~>` constraint instead of the resolved version, so pass only the latter.
      - name: Expose rb_sys version for rb-sys-dock
        run: grep -E '^ +rb_sys \([0-9]' crates/css-inline-ruby/Gemfile.lock > Gemfile.lock

      - name: Compile native gem
        id: cross-gem
        uses: oxidize-rb/actions/cross-gem@v1.5.0
        with:
          platform: ${{ matrix.platform }}
          ruby-versions: ${{ env.RUBY_VERSIONS }}
          working-directory: ./crates/css-inline-ruby

      # rake-compiler only warns when the image lacks a requested Ruby, and still
      # exits 0 with that ABI silently absent from the gem.
      - name: Verify every Ruby ABI was built
        working-directory: ./crates/css-inline-ruby
        run: |
          for version in ${RUBY_VERSIONS//,/ }; do
            tar -xOf pkg/*.gem data.tar.gz | tar -tzf - \
              | grep -q "lib/css_inline/$version/" \
              || { echo "::error::Ruby $version missing from $(ls pkg/*.gem)"; exit 1; }
          done

      # Pushes to RubyGems are irreversible.
      - name: Smoke test
        if: matrix.platform == 'x86_64-linux'
        working-directory: ./crates/css-inline-ruby
        env:
          BUNDLE_GEMFILE: ""
        run: |
          gem install pkg/*.gem --local --no-document
          ruby -e "
            require 'css_inline'
            html = '<html><head><style>h1 { color: red; }</style></head><body><h1>Test</h1></body></html>'
            result = CSSInline.inline(html)
            raise 'inlining failed' unless result.include?('style=\"color: red;\"')
            puts 'smoke test OK'
          "

      - uses: actions/upload-artifact@v7
        with:
          name: cross-gem-${{ matrix.platform }}
          path: ${{ steps.cross-gem.outputs.gem-path }}
          if-no-files-found: error

  ruby-release:
    needs: cross-gem
    runs-on: ubuntu-22.04
    env:
      # A manual run from a branch has no version to release.
      PUBLISH: ${{ !inputs.dry_run && startsWith(github.ref, 'refs/tags/') }}

    steps:
      - uses: actions/checkout@v7

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: "3.2"
          bundler-cache: true
          working-directory: ./crates/css-inline-ruby

      - name: Extract Version
        run: echo "version=${GITHUB_REF#refs/tags/ruby-v}" >> $GITHUB_ENV

      - name: Download native gems
        uses: actions/download-artifact@v8
        with:
          pattern: cross-gem-*
          merge-multiple: true
          path: ./crates/css-inline-ruby/pkg

      - name: Build source gem
        working-directory: ./crates/css-inline-ruby
        run: |
          gem build *.gemspec
          mv css_inline-*.gem pkg/
          ls -l pkg/

      - name: GitHub Release
        if: env.PUBLISH == 'true'
        uses: softprops/action-gh-release@v3
        with:
          make_latest: false
          draft: true
          name: "[Ruby] Release ${{ env.version }}"
          files: ./crates/css-inline-ruby/pkg/*.gem

      - name: Publish to RubyGems
        if: env.PUBLISH == 'true'
        working-directory: ./crates/css-inline-ruby
        run: |
          mkdir -p $HOME/.gem
          touch $HOME/.gem/credentials
          chmod 0600 $HOME/.gem/credentials
          printf -- "---\n:rubygems_api_key: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
          for gem in pkg/*.gem; do
            gem push "$gem"
          done
        env:
          GEM_HOST_API_KEY: "${{ secrets.RUBYGEMS_API_KEY }}"

      - name: Upload gems (no publish)
        if: env.PUBLISH != 'true'
        uses: actions/upload-artifact@v7
        with:
          name: gems
          path: ./crates/css-inline-ruby/pkg/*.gem
          if-no-files-found: error