name: Gem Tasks

on:
  push:
    tags:
      - "v*"

jobs:
  gem_build:
    if: "github.repository_owner == 'jekyll' && startsWith(github.event.head_commit.message, 'Release :gem:')"
    name: "Build Gem (Ruby ${{ matrix.ruby_version }})"
    runs-on: "ubuntu-latest"
    strategy:
      fail-fast: true
      matrix:
        ruby_version:
          - 2.7
    steps:
      - name: Checkout Repository
        uses: actions/checkout@v2
      - name: "Set up Ruby ${{ matrix.ruby_version }}"
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: ${{ matrix.ruby_version }}
          bundler-cache: true
      - name: Extract Plugin Version
        id: plugin-meta
        run: echo "::set-output name=version::$(bundle exec ruby -e 'require "jekyll_test_plugin"; puts JekyllTestPlugin::VERSION')"
        shell: bash
      - name: "Build Gem (JekyllTestPlugin ${{ steps.plugin-meta.outputs.version }})"
        run: gem build jekyll_test_plugin.gemspec
      - name: Archive gem as artifact
        uses: actions/upload-artifact@v2
        with:
          name: "jekyll_test_plugin-${{ steps.plugin-meta.outputs.version }}"
          path: "jekyll_test_plugin-${{ steps.plugin-meta.outputs.version }}.gem"
          retention-days: 5
      - name: Release Gem via Rubygems.org
        env:
          GEM_HOST_API_KEY: ${{ secrets.RUBYGEMS_GEM_PUSH_API_KEY }}
        run: "gem push jekyll_test_plugin-${{ steps.plugin-meta.outputs.version }}.gem"