name: Release Candidate

on:
  push:
    branches: [main]
  workflow_dispatch:

jobs:
  tag:
    runs-on: ubuntu-latest
    if: github.event_name == 'push'
    steps:
      - uses: actions/checkout@v4
        with: { fetch-depth: 0 }
      - name: Auto-tag RC
        run: |
          set -e
          TAG="rc-${{ github.run_number }}"
          git tag "$TAG" || true
          git push origin "$TAG" || true
          echo "tag=$TAG" >> "$GITHUB_OUTPUT"

  draft:
    runs-on: ubuntu-latest
    needs: tag
    steps:
      - uses: actions/checkout@v4
        with: { fetch-depth: 0 }
      - name: Draft release
        run: |
          set -e
          TAG="${{ needs.tag.outputs.tag }}"
          gh release create "$TAG" --draft --title "RC $TAG" --notes "Automated release candidate." || true
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}