version.yml

name: Create Tag and Draft Release with Notes

on:
  push:
    branches:
      - trunk
    paths:
      - 'setup.py'
  workflow_dispatch:

permissions:
  contents: write

jobs:
  check-and-extract:
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.get-version.outputs.version }}
      tag-exists: ${{ steps.check-tag.outputs.exists }}

    steps:
      - name: Check out code
        uses: actions/checkout@v6

      - name: Extract version from setup.py
        id: get-version
        run: |
          VERSION=$(cat setup.py | grep -E '^ +version="[0-9.]+",' | cut -d'"' -f2)
          echo "Extracted version is $VERSION"
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"

      - name: Check if tag exists
        id: check-tag
        run: |
          if git tag | grep -q "${{ steps.get-version.outputs.version }}"; then
            echo "Tag exists"
            echo "exists=1" >> "$GITHUB_OUTPUT"
          else
            echo "Tag does not exist"
            echo "exists=0" >> "$GITHUB_OUTPUT"
          fi

  create-tag-and-release:
    needs: check-and-extract
    if: needs.check-and-extract.outputs.tag-exists == '0'
    runs-on: ubuntu-latest

    steps:
      - name: Check out code
        uses: actions/checkout@v6

      - name: Create and push tag
        run: |
          git config --global user.name "GitHub Action"
          git config --global user.email "action@github.com"
          git tag "v${{ needs.check-and-extract.outputs.version }}"
          git push origin "v${{ needs.check-and-extract.outputs.version }}"

      - name: Draft a new release with autogenerated notes
        run: |
          gh auth login --with-token <<< "${{ secrets.GITHUB_TOKEN }}"
          gh release create "v${{ needs.check-and-extract.outputs.version }}" --title "Release v${{ needs.check-and-extract.outputs.version }}" --generate-notes --draft