name: Update Submodule Pointer
on:
  repository_dispatch:
    types: [submodule-updated]

permissions:
  contents: write

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Update submodule pointer
        env:
          SERVICE: ${{ github.event.client_payload.service }}
          SHA: ${{ github.event.client_payload.sha }}
        run: |
          echo "Updating ${SERVICE} to ${SHA}"
          git submodule update --init "apps/${SERVICE}"
          cd "apps/${SERVICE}"
          # unshallow → full fetch so we get tree objects for the target SHA
          git fetch --depth=1000 origin master
          git checkout "${SHA}"
          cd "${GITHUB_WORKSPACE}"
          git add "apps/${SERVICE}"
          git diff --cached --quiet && exit 0
          git config user.name "monrepo-bot"
          git config user.email "monrepo-bot@users.noreply.github.com"
          git commit -m "chore: update ${SERVICE} to ${SHA:0:12}"
          git push