auto-release.yml

name: Auto Release

# Tags a release when an automated data-update PR (from update-data.yml) is
# merged. Pushing the tag with GH_PAT triggers release.yml, which builds the
# wheels and publishes to PyPI and crates.io. Tags pushed with the default
# GITHUB_TOKEN would not trigger release.yml, hence the PAT.

on:
  pull_request:
    types: [closed]

permissions:
  contents: write

jobs:
  tag:
    if: github.event.pull_request.merged == true && github.event.pull_request.head.ref == 'auto/data-update'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: master
          token: ${{ secrets.GH_PAT }}

      - name: Read version from Cargo.toml
        id: version
        run: |
          VERSION=$(grep -m1 '^version = ' Cargo.toml | sed 's/version = "\(.*\)"/\1/')
          echo "value=$VERSION" >> "$GITHUB_OUTPUT"

      - name: Push release tag
        run: |
          TAG="v${{ steps.version.outputs.value }}"
          if git ls-remote --exit-code --tags origin "refs/tags/$TAG" > /dev/null 2>&1; then
            echo "Tag $TAG already exists; skipping."
            exit 0
          fi
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag "$TAG"
          git push origin "$TAG"
          echo "Pushed $TAG — release.yml will publish to PyPI and crates.io."