name: Release Gem Package

on:
  push:
    branches:
      - master
      - github-workflow

jobs:
  release_version:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v2

      - name: Set Up Ruby
        uses: actions/setup-ruby@v1
        with:
          ruby-version: 3.0

      - name: Install Dependencies
        run: |
          gem install bundler
          bundle install

      - name: Build Gem Package
        run: |
          gem build middleware_rubygem.gemspec

      - name: Check for Version Change
        id: version_check
        run: |
          # Extract the old and new versions from the commit
          OLD_VERSION=$(git show HEAD^:lib/middleware/ruby_gem/version.rb | grep 'VERSION =' | awk '{print $3}' | tr -d '"')
          NEW_VERSION=$(git show HEAD:lib/middleware/ruby_gem/version.rb | grep 'VERSION =' | awk '{print $3}' | tr -d '"')
          
          if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
            echo "Version changed from $OLD_VERSION to $NEW_VERSION"
            echo "::set-output name=version_changed::true"
          else
            echo "Version remains unchanged"
            echo "::set-output name=version_changed::false"
          fi

      - name: Publish Gem Package
        if: steps.version_check.outputs.version_changed == 'true'
        env:
          GEM_HOST_API_KEY: ${{ secrets.RUBY_GEMS_API_KEY }}
        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

      - name: Create Release
        if: steps.version_check.outputs.version_changed == 'true'
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: v${{ steps.version_check.NEW_VERSION }}
          release_name: Release ${{ steps.version_check.NEW_VERSION }}
          draft: false
          prerelease: false