update-submodules.yml

name: Update Submodules

on:
  push:
    branches:
      - master
  schedule:
    - cron: '0 0 * * *'
  workflow_dispatch:

jobs:
  update-submodules:
    runs-on: ubuntu-latest

    steps:
      - name: Check out repository
        uses: actions/checkout@v3
        with:
          submodules: recursive
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Update submodules to remote HEAD
        run: |
          git submodule sync --recursive
          git submodule update --init --recursive --remote

      - name: Check if there are changes
        run: |
          if [ -n "$(git status --porcelain)" ]; then
            git config user.name "github-actions[bot]"
            git config user.email "github-actions[bot]@users.noreply.github.com"
            git add .
            git commit -m "chore: update submodules to latest"
          else
            echo "No changes to commit."
          fi

      - name: Push changes
        if: always()
        run: |
          if [ -n "$(git log -1 --pretty=%B | grep 'chore: update submodules')" ]; then
            git push origin HEAD:${{ github.ref_name }}
          fi