update-submodules.yml

name: Update submodules

on:
  schedule:
    - cron: '0 3 * * FRI'
  workflow_dispatch:
    inputs:
      branches:
        description: "Comma-separated branches to update"
        required: false
        default: "main,Dreaming"

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

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          submodules: true

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

      - name: Determine branches
        id: vars
        shell: bash
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ] && [ -n "${{ inputs.branches }}" ]; then
            echo "branches=${{ inputs.branches }}" >> "$GITHUB_OUTPUT"
          else
            echo "branches=main,dev" >> "$GITHUB_OUTPUT"
          fi

      - name: Update submodules on each branch
        shell: bash
        run: |
          set -euo pipefail

          IFS=',' read -ra BRANCHES <<< "${{ steps.vars.outputs.branches }}"

          for BR in "${BRANCHES[@]}"; do
            BR="$(echo "$BR" | xargs)"
            echo "Updating branch: $BR"

            git fetch origin "$BR":"$BR" || git fetch origin "$BR"
            git checkout "$BR"

            git submodule sync --recursive
            git submodule update --init --recursive
            git submodule update --remote --recursive

            if ! git diff --quiet; then
              git add .
              git commit -m "CI: auto-update submodules to latest branches on $BR"
              git push origin "$BR"
            else
              echo "No changes in submodules on $BR"
            fi
          done