draft-release.yml

name: Draft Release

# When a "Release X.Y.Z" PR (opened by the Create Release PR workflow) is
# merged into master, this prepares a DRAFT GitHub Release with the right tag
# and auto-generated notes. It is intentionally left as a draft — a human
# clicks "Publish" to actually ship, which triggers release.yml + executable.yml.
on:
  pull_request:
    types: [closed]

permissions:
  contents: write

jobs:
  draft:
    # Only for merged PRs whose title starts with "Release " (our bump PRs).
    if: >-
      github.event.pull_request.merged == true &&
      startsWith(github.event.pull_request.title, 'Release ')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
        with:
          ref: ${{ github.event.pull_request.merge_commit_sha }}

      - name: Create draft release
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          TARGET_SHA: ${{ github.event.pull_request.merge_commit_sha }}
        run: |
          set -euo pipefail
          VERSION=$(node -p "require('./lerna.json').version")
          TAG="v$VERSION"

          # Mark betas (versions containing a hyphen) as pre-releases.
          PRERELEASE_FLAG=""
          if [[ "$VERSION" == *-* ]]; then
            PRERELEASE_FLAG="--prerelease"
          fi

          # Don't recreate if a draft/release for this tag already exists.
          if gh release view "$TAG" >/dev/null 2>&1; then
            echo "Release $TAG already exists — skipping."
            exit 0
          fi

          gh release create "$TAG" \
            --draft \
            --generate-notes \
            --title "$TAG" \
            --target "$TARGET_SHA" \
            $PRERELEASE_FLAG

          echo "Created draft release $TAG. Review it and click Publish to ship."