create-github-release.yml

name: Create GitHub Release

on:
  push:
    tags:
      - 'v*.*.*'

permissions:
  contents: write

jobs:
  create-release:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Extract release notes from CHANGELOG.md
        shell: bash
        run: |
          python - <<'PY'
          import re
          import sys
          from pathlib import Path

          tag = "${{ github.ref_name }}"
          changelog = Path("CHANGELOG.md")
          if not changelog.exists():
            print("CHANGELOG.md not found", file=sys.stderr)
            sys.exit(1)

          text = changelog.read_text(encoding="utf-8")

          # Match headings like: ## [v1.11.0] - 2026-04-03
          header_re = re.compile(rf"^##\s+\[{re.escape(tag)}\]\s+-\s+.*$", re.M)
          m = header_re.search(text)
          if not m:
            print(f"Release section for {tag} not found in CHANGELOG.md", file=sys.stderr)
            sys.exit(1)

          start = m.start()
          after_header = m.end()
          next_header = re.search(r"^##\s+\[", text[after_header:], re.M)
          end = after_header + next_header.start() if next_header else len(text)

          section = text[start:end].strip()
          lines = section.splitlines()
          body = "\n".join(lines[1:]).strip() if lines and lines[0].startswith("##") else section
          if not body:
            print(f"Release body for {tag} is empty", file=sys.stderr)
            sys.exit(1)

          out = Path("release_body.md")
          out.write_text(body + "\n", encoding="utf-8")
          print(f"Wrote {out} for tag {tag}")
          PY

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.ref_name }}
          name: ${{ github.ref_name }}
          body_path: release_body.md
          draft: false
          prerelease: false