# Release Tag workflow

name: release_tag

# Performed actions:
# - [x] check that last commit is the CHANGES edit
# - [x] infer the last RC version
# - [x] run bumpver.py with the new version
# - [x] push the commit and new tag

on:
  workflow_dispatch: # on manual trigger

jobs:
  new-tag:
    if: ${{ github.ref_name == 'master' }}
    runs-on: ubuntu-latest
    env:
      CHANGES_FILE: CHANGES.rst
      EXPECTED_DIFF_COUNT: 1
    steps:
      - uses: actions/checkout@v3

      - id: get-diff
        uses: technote-space/get-diff-action@v6
        with:
          PATTERNS: |
            ${{ env.CHANGES_FILE }}
          SET_ENV_NAME_COUNT: true

      - id: check-changes
        run: |
          echo "${{ steps.get-diff.outputs.count }}/${{ env.EXPECTED_DIFF_COUNT }} changes in ${{ env.CHANGES_FILE }}."
          exit ${{ steps.get-diff.outputs.count == env.EXPECTED_DIFF_COUNT && 0 || 1 }}

      - id: get-version
        run: |
          LAST_VERSION=$(grep -m1 -E ' \([0-9]+-[0-9]+-[0-9]+\)$' ${CHANGE_FILE} | awk '{ print $1 }')
          echo "LAST_VERSION=${LAST_VERSION}" >> "$GITHUB_OUTPUT"

      - uses: actions/setup-python@v4
        with:
          python-version: "3.x"

      - id: install-requirements
        run: pip install -r "requirements/dev.pip"

      - name: run `bumpver`
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          CHANGE_FILE=${{ env.CHANGES_FILE }}
          LAST_VERSION=${{ steps.get-version.outputs.LAST_VERSION }}
          git config user.name github-actions
          git config user.email github-actions@github.com

          python3 bin/bumpver.py -t "Automated release ${LAST_VERSION}" ${LAST_VERSION}
          git push --follow-tags