name: Update Stable Branch from Master on Latest Release

on:
  release:
      types: [released]

permissions:
  contents: write 

jobs:
  update-stable-branch:
    name: Update Stable Branch from Master
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Configure Git
        run: |
          git config user.name "GitHub Actions Bot"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Fetch latest master and stable branches
        run: |
          git fetch origin master:master
          git fetch origin stable:stable || echo "Stable branch not found remotely, will create."

      - name: Get latest master commit SHA
        id: get_master_sha
        run: echo "MASTER_SHA=$(git rev-parse master)" >> $GITHUB_ENV

      - name: Check out stable branch
        run: |
          if git show-ref --verify --quiet refs/heads/stable; then
            git checkout stable
            git pull origin stable # Sync with remote stable if it exists
          else
            echo "Creating local stable branch based on master HEAD."
            git checkout -b stable ${{ env.MASTER_SHA }}
          fi

      - name: Reset stable branch to latest master
        run: git reset --hard ${{ env.MASTER_SHA }}

      - name: Force push stable branch
        run: git push origin stable --force