create-release.yml

name: Create Release

# Push a v* tag (e.g. v0.1.0) to cut a release. The tag name is the version.
on:
  push:
    tags:
      - "v*"

permissions:
  contents: write

jobs:
  create-release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          # Full history + tags so conventional-changelog can diff this tag
          # against the previous one.
          fetch-depth: 0

      - name: Set up Bun
        uses: oven-sh/setup-bun@v2
        with:
          bun-version: 1.3.14

      - name: Create the GitHub release
        env:
          TAG: ${{ github.ref_name }}
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail

          # Build the changelog for just this release (latest tag .. previous tag),
          # grouped into Features / Bug Fixes by conventional-commit type. Strip
          # the auto-generated version header — the release title already shows the
          # version. Fall back to GitHub's generated notes if it comes back empty.
          NOTES="$(bunx conventional-changelog-cli -p conventionalcommits -r 1 \
            | sed -E '/^#+ \[?v?[0-9]+\.[0-9]+\.[0-9]+/d')"

          if [ -n "$(printf '%s' "$NOTES" | tr -d '[:space:]')" ]; then
            printf '%s\n' "$NOTES" > "$RUNNER_TEMP/notes.md"
            gh release create "$TAG" --title "$TAG" --notes-file "$RUNNER_TEMP/notes.md"
          else
            gh release create "$TAG" --title "$TAG" --generate-notes
          fi