name: Release

# Tag a release (e.g. `git tag v1.2.0 && git push --tags`) to:
#   1. verify the committed bundle is fresh,
#   2. create a GitHub Release, and
#   3. move the major tag (e.g. v1) to this commit so consumers can pin `@v1`.

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

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - uses: actions/setup-node@v4
        with:
          node-version: 24
      - run: npm ci

      - name: Tests
        run: npm test

      - name: Verify committed bundle is fresh
        run: |
          npm run build:action
          if ! git diff --quiet -- dist/; then
            echo "::error::dist/ does not match src/. Build and commit dist/ before tagging."
            exit 1
          fi

      - name: Create GitHub Release
        env:
          GH_TOKEN: ${{ github.token }}
        run: gh release create "$GITHUB_REF_NAME" --title "$GITHUB_REF_NAME" --generate-notes

      - name: Move major tag (vN → this commit)
        run: |
          MAJOR="${GITHUB_REF_NAME%%.*}"   # v1.2.0 -> v1
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag -f "$MAJOR"
          git push -f origin "refs/tags/$MAJOR"