name: Update Submodules

on:
  schedule:
    - cron: '0 0 * * 0' # Runs every Sunday at midnight
  workflow_dispatch: # Allows manual triggering of the workflow

jobs:
  update-submodules:
    runs-on: ubuntu-26.04
    strategy:
      matrix:
        submodule: 
          - tomlplusplus

    steps:
      - name: Checkout repository
        uses: actions/checkout@v7
        with:
          submodules: recursive

      - name: Update submodules to latest release
        id: git-change-job
        run: |
          cd ThirdParty/${{ matrix.submodule }}
          git fetch --tags
          latest_tag=$(git describe --tags `git rev-list --tags --max-count=1`)

          if [ -n "$latest_tag" ]; then
            git checkout $latest_tag
            echo "LATEST_TAG=$latest_tag" >> "$GITHUB_OUTPUT"
          else
            echo "Empty tag detected in ${{ matrix.submodule }}. Nothing to do."
          fi

      - name: Create PR
        # The generated PR does not have any tests. Close and reopen the PR to activate tests.
        uses: peter-evans/create-pull-request@v8
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "Update ${{ matrix.submodule }} to ${{ steps.git-change-job.outputs.LATEST_TAG }}"
          title: "Update ${{ matrix.submodule }} to ${{ steps.git-change-job.outputs.LATEST_TAG }}"
          branch: ci-update-${{ matrix.submodule }}
          branch-suffix: random