dev-release-pr.yml

name: Open dev -> master release PR (with version bump)

on:
  push:
    branches: [dev]

permissions:
  contents: write
  pull-requests: write

jobs:
  release-pr:
    if: "!contains(github.event.head_commit.message, 'chore: bump version')"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          ref: dev
          token: ${{ secrets.GITHUB_TOKEN }}
          fetch-depth: 0

      - name: Check for existing dev -> master PR
        id: check
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          existing=$(gh pr list --base master --head dev --state open --json number --jq '.[0].number')
          echo "existing=$existing" >> "$GITHUB_OUTPUT"
          if [ -n "$existing" ]; then
            echo "PR #$existing already open; skipping version bump."
          fi

      - name: Bump patch version in pyproject.toml
        if: steps.check.outputs.existing == ''
        run: |
          python - <<'PY'
          import re, pathlib
          p = pathlib.Path("pyproject.toml")
          s = p.read_text()
          m = re.search(r'^version\s*=\s*"(\d+)\.(\d+)\.(\d+)"', s, re.MULTILINE)
          if not m:
              raise SystemExit("version not found in pyproject.toml")
          maj, mnr, pat = map(int, m.groups())
          new = f'version = "{maj}.{mnr}.{pat+1}"'
          p.write_text(s[:m.start()] + new + s[m.end():])
          print("Bumped to", new)
          PY

      - name: Commit bump
        if: steps.check.outputs.existing == ''
        run: |
          git config user.name  "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add pyproject.toml
          if ! git diff --cached --quiet; then
            git commit -m "chore: bump version [skip ci]"
            git push
          fi

      - name: Create dev -> master PR
        if: steps.check.outputs.existing == ''
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh pr create \
            --base master \
            --head dev \
            --title "Release: $(cat pyproject.toml | grep version | cut -d'"' -f2)" \
            --body "Automated release PR. Contains merged feature PRs and a single version bump."