name: Ruby Gem

on:
  push:
    tags: [ v* ]

jobs:
  build:
    if: contains(github.ref, 'refs/tags/v')
    name: Build + Publish
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Set up Ruby 2.6
      uses: actions/setup-ruby@v1
      with:
        ruby-version: 2.6.x

    - name: Publish to GPR
      run: |
        mkdir -p $HOME/.gem
        touch $HOME/.gem/credentials
        chmod 0600 $HOME/.gem/credentials
        printf -- "---\n:github: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
        gem build *.gemspec
        gem push --KEY github --host https://rubygems.pkg.github.com/${OWNER} *.gem
      env:
        GEM_HOST_API_KEY: "Bearer ${{secrets.GITHUB_TOKEN}}"
        OWNER: ${{ github.repository_owner }}

    - name: Release Gem
      uses: CvX/publish-rubygems-action@main
      env:
        RUBYGEMS_API_KEY: ${{secrets.RUBYGEMS_API_KEY}}