name: Release

on:
  push:
    tags:
      - "v*"

jobs:
  build:
    name: Build
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - uses: ruby/setup-ruby@v1
        with:
          bundler-cache: true
      - run: bundle exec rake

  release:
    needs: build
    name: Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Generate Changelog
        run: |
          # Get version from github ref (remove 'refs/tags/' and prefix 'v')
          version="${GITHUB_REF#refs/tags/v}"
          npx changelog-parser CHANGELOG.md | jq -cr ".versions | .[] | select(.version == \"$version\") | .body" > ${{ github.workflow }}-CHANGELOG.txt

      - name: Release
        uses: softprops/action-gh-release@v1
        with:
          body_path: ${{ github.workflow }}-CHANGELOG.txt
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  publish:
    needs: [build, release]
    name: Publish
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: ruby/setup-ruby@v1

      - name: Publish to RubyGems
        run: |
          mkdir -p $HOME/.gem
          touch $HOME/.gem/credentials
          chmod 0600 $HOME/.gem/credentials
          printf -- "---\n:rubygems_api_key: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
          gem build *.gemspec
          gem push *.gem
        env:
          GEM_HOST_API_KEY: "${{secrets.RUBYGEMS_AUTH_TOKEN}}"