name: Publish GitHub release

on:
  push:
    branches: [main]
    paths:
      - "pyproject.toml"
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: github-release-${{ github.ref }}
  cancel-in-progress: false

jobs:
  github-release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Read package version
        id: package
        run: |
          version="$(python3 -c 'import tomllib; print(tomllib.load(open("pyproject.toml", "rb"))["project"]["version"])')"
          echo "version=${version}" >> "${GITHUB_OUTPUT}"
      - name: Create annotated release notes and tag
        env:
          GH_TOKEN: ${{ github.token }}
          VERSION: ${{ steps.package.outputs.version }}
        run: |
          set -euo pipefail
          tag="v${VERSION}"
          notes="docs/releases/${tag}.md"
          test -s "${notes}"
          if gh release view "${tag}" >/dev/null 2>&1; then
            echo "GitHub Release ${tag} already exists; leaving it unchanged"
            exit 0
          fi
          gh release create "${tag}" --target "${GITHUB_SHA}" --title "ComfyUI Scale-Locked Residual Diffusion ${tag}" --notes-file "${notes}" --latest