update-tooling-submodule.yml

name: Update tooling submodule on new release

on:
  repository_dispatch:
    types: [tooling-release]

jobs:
  update-submodule:
    runs-on: ubuntu-latest
    if: github.repository_owner == 'SMPTE'

    permissions:
      contents: write

    steps:
      - name: Checkout template repo with submodule
        uses: actions/checkout@v3
        with:
          token: ${{ secrets.SUBMODULE_UPDATE_PAT }}
          submodules: true
          fetch-depth: 0

      - name: Check if submodule is already at this SHA
        id: check
        env:
          TARGET_SHA: ${{ github.event.client_payload.sha }}
        run: |
          CURRENT_SHA=$(git -C tooling rev-parse HEAD)
          echo "current_sha=${CURRENT_SHA}" >> "$GITHUB_OUTPUT"
          if [[ "$CURRENT_SHA" == "$TARGET_SHA" ]]; then
            echo "already_up_to_date=true" >> "$GITHUB_OUTPUT"
          else
            echo "already_up_to_date=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Update submodule to release SHA
        if: steps.check.outputs.already_up_to_date != 'true'
        env:
          TARGET_SHA: ${{ github.event.client_payload.sha }}
        run: |
          git -C tooling fetch origin
          git -C tooling checkout "$TARGET_SHA"

      - name: Commit and push to main
        if: steps.check.outputs.already_up_to_date != 'true'
        env:
          TAG: ${{ github.event.client_payload.tag }}
          TARGET_SHA: ${{ github.event.client_payload.sha }}
          CURRENT_SHA: ${{ steps.check.outputs.current_sha }}
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add tooling
          git commit -m "bump tooling to ${TAG}

          Updates tooling submodule from ${CURRENT_SHA} to ${TARGET_SHA}."
          git push origin main