name: prerelease
on:
  push:
    branches:
      # releases/<tag>/<version>
      - releases/*/*
jobs:
  prerelease:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v2
        with:
          node-version: 'lts/*'
          cache: 'npm'
          check-latest: true
          registry-url: 'https://registry.npmjs.org'
      - name: Install core dependencies
        run: npm ci --no-audit
      - name: Extract tag and version
        id: extract
        run: |-
          ref=${{ github.ref }}
          branch=${ref:11}
          tag_version=${branch:9}
          tag=${tag_version%/*}
          version=${tag_version##*/}
          echo "::set-output name=tag::${tag}"
          echo "::set-output name=version::${version}"
      - name: Log versions
        run: |-
          echo tag=${{ steps.extract.outputs.tag }}
          echo version=${{ steps.extract.outputs.version }}
      - name: Setup git user
        run: git config --global user.name github-actions
      - name: Setup git email
        run: git config --global user.email github-actions@github.com
      - name: Run npm version
        run: npm version ${{ steps.extract.outputs.version }}-${{ steps.extract.outputs.tag }} --allow-same-version
      - name: Push changes
        run: git push --follow-tags
      - name: Run npm publish
        run: npm publish --tag=${{ steps.extract.outputs.tag }}
        env:
          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}