name: Update submodules

on:
  schedule:
  - cron: '0 7 * * *'
  workflow_dispatch:
    inputs:
      branch:
        description: DFHack branch to update
        required: false
        default: develop

jobs:
  run:
    runs-on: ubuntu-latest
    steps:
    - name: Clone DFHack
      uses: actions/checkout@v2
      with:
        fetch-depth: 0
        ref: ${{ github.event.inputs.branch }}
        submodules: true
    - name: Update submodules
      run: |
        if bash -x ci/update-submodules.bash; then
          git push
        fi