name: Tag release

on: 
  push:
    branches:
      - main

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Get package version
        id: package_version
        run: echo "::set-output name=package-version::v$(jq -r ".version" package.json)"

      - name: Check if version tag already exists
        id: version_tag
        uses: mukunku/tag-exists-action@f8003af57c02ede2638326be67523df10cf6b10a
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag: ${{ steps.package_version.outputs.package-version }}

      - name: Create GitHub release
        if: ${{ steps.version_tag.outputs.exists == 'false' }}
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.DM_GITHUB_TOKEN }}
        with:
          tag_name: ${{ steps.package_version.outputs.package-version }}
          release_name: Release ${{ steps.package_version.outputs.package-version }}