name: Release Drafter

on:
  push:
    branches:
      - main

jobs:
  update_release_draft:
    runs-on: ubuntu-latest
    steps:
      - uses: release-drafter/release-drafter@v5
        id: release-draft
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      # Update version number in setup.py
      - uses: actions/checkout@v2
      - name: Calculate version
        id: version
        run: |
          tag="${{ steps.release-draft.outputs.tag_name }}"
          echo "::set-output name=version::${tag:1}"

      - name: Set setup.py version
        run: |
          sed -i "s/VERSION = .*/VERSION = \"${{ steps.version.outputs.version }}\"/g" setup.py
      # github actions email from here: https://github.community/t/github-actions-bot-email-address/17204
      - name: Commit changes
        run: |
          if ! git diff --quiet; then
            git config --global user.name "github-actions[bot]"
            git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
            git commit -am "Bump version to ${{ steps.version.outputs.version }}"
            git push
          fi