release.yml

name: Release

on:
  push:
    tags: ["v[0-9]+.[0-9]+.[0-9]+"]

jobs:

  release:
    runs-on: ubuntu-latest
    permissions:
      contents: write

    steps:

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

    # ── Release artefact ─────────────────────────────────────────────────────
    - name: Build release tarball
      run: |
        REPO_NAME="${GITHUB_REPOSITORY##*/}"
        VERSION="${{ github.ref_name }}"
        tar --xform="s%^%${REPO_NAME}-${VERSION}/%" -czf "${REPO_NAME}-${VERSION}.tar.gz" \
          --exclude='.git' \
          --exclude='docs/node_modules' \
          --exclude='docs/.vitepress/dist' \
          --exclude='docs/.vitepress/cache' \
          --exclude='exe' --exclude='obj' --exclude='mod' \
          *
        echo "TARBALL=${REPO_NAME}-${VERSION}.tar.gz" >> $GITHUB_ENV

    # ── Release notes from CHANGELOG.md ─────────────────────────────────────
    - name: Extract release notes from CHANGELOG.md
      run: |
        python3 - "${{ github.ref_name }}" CHANGELOG.md > release_notes.md <<'PYEOF'
        import sys, re
        tag, path = sys.argv[1], sys.argv[2]
        with open(path) as f:
            content = f.read()
        pattern = rf'(## \[{re.escape(tag)}\].*?)(?=\n## |\Z)'
        match = re.search(pattern, content, re.DOTALL)
        print(match.group(1).strip() if match else f"Release {tag}\n\nSee CHANGELOG.md for details.")
        PYEOF

    # ── Publish GitHub release ───────────────────────────────────────────────
    - name: Publish GitHub release
      uses: softprops/action-gh-release@v2
      with:
        tag_name: ${{ github.ref_name }}
        name: ${{ github.ref_name }}
        body_path: release_notes.md
        files: |
          ${{ env.TARBALL }}
          scripts/install.sh
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}