populate-releasenotes.yml

# Preamble
name: Populate SaltProc release notes

on:
  push:
    branches:
      - 'master'
    paths:
      - 'doc/releasenotes/v**.rst'
  # enable worflow to be run manually
  workflow_dispatch:

jobs:
  populate-releasenotes:
    runs-on: ubuntu-latest
    defaults:
      run:
        shell: bash -l {0}

    steps:
      - uses: actions/checkout@v2

      - name: Set up Python 3.9
        uses: actions/setup-python@v2
        with:
          python-version: 3.9
      - name: Add conda to system path
        run: |
          # $CONDA is an environment variable pointing to the root of the miniconda directory
          echo $CONDA/bin >> $GITHUB_PATH

      - name: install pandoc 
        run: |
          conda install -c conda-forge pandoc
          pip install --upgrade pandoc

      - name: Get most recent draft release version
        run: |
          echo "RELEASE_VERSION=$(gh api repos/${{ github.repository }}/releases --jq '.[0] | .name')" >> $GITHUB_ENV
          echo "RELEASE_ID=$(gh api repos/${{ github.repository }}/releases --jq '.[0] | .id')" >> $GITHUB_ENV
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Convert .rst to .md 
        run: |
          pandoc -o RELEASENOTES.md -f rst -t gfm doc/releasenotes/${{ env.RELEASE_VERSION }}.rst --columns 1000
          sed -i "s/# Release notes for ${{ env.RELEASE_VERSION }}//g" RELEASENOTES.md


      - name: Populate the release description with RELEASENOTES.md
        run: |
          CURRENT_TAG=$(gh api repos/${{ github.repository }}/releases/${{ env.RELEASE_ID }} \
          -H "Authorize: token ${{ secrets.GITHUB_TOKEN }}" \
          -H "Accept: application/vnd.github.v3+json" \
          -X GET \
          --jq '.tag_name')
          gh api repos/${{ github.repository }}/releases/${{ env.RELEASE_ID }} \
          -H "Authorize: token ${{ secrets.GITHUB_TOKEN }}" \
          -H "Accept: application/vnd.github.v3+json" \
          -X PATCH \
          -F tag_name=$CURRENT_TAG \
          -F body="$(cat RELEASENOTES.md)"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}