name: Append changelog for new release

on:

  workflow_dispatch:
    inputs:
      version:
        description: 'Version'     
        required: true

jobs:

  append-changelog:
    runs-on: ubuntu-latest
    steps:

      - name: Checkout
        uses: actions/checkout@v2

      - name: Write changelog
        run: |
          cp -fv CHANGELOG.md CHANGELOG.md.bak
          head -n2 CHANGELOG.md.bak > CHANGELOG.md
          cat >> CHANGELOG.md << EOF
          ## ${{ github.event.inputs.version }}

          ### New Features

          * TODO

          #### Document Editors

          * TODO

          #### Spreadsheet Editor

          * TODO

          #### Presentation Editors

          * TODO

          ### Fixes

          * TODO

          EOF
          tail -n +3 CHANGELOG.md.bak >> CHANGELOG.md
          rm -fv CHANGELOG.md.bak

      - name: Commit & push changes
        uses: EndBug/add-and-commit@v8
        with:
          author_name: github-actions[bot]
          author_email: github-actions[bot]@users.noreply.github.com
          message: Add template changelog for v${{ github.event.inputs.version }}
          add: CHANGELOG.md
          new_branch: feature/changelog-v${{ github.event.inputs.version }}