dependency-update.yaml

name: Update Matter SDK submodule

on:
  schedule:
    # Runs at 04:30 UTC every day
    - cron: '30 04 * * *'
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  update-connectedhomeip-submodule:
    runs-on: ubuntu-latest
    name: Update Matter SDK submodule

    steps:
      # Checkout the repository
      - name: Checkout Repository
        uses: actions/checkout@v4
        with:
          submodules: false
          # Required to push to git repo and trigger push CI run for the PR
          ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}

      # Update submodule (not recursive)
      - name: Update Submodule
        id: update-submodule
        run: |
          git submodule update --init connectedhomeip/
          short_hash_before=$(cd connectedhomeip && git rev-parse --short HEAD)
          echo "short_hash_before=${short_hash_before}" >> $GITHUB_OUTPUT
          git submodule update --remote connectedhomeip/
          git add connectedhomeip/
          if git diff-index --quiet HEAD; then
              echo "empty=true" >> $GITHUB_OUTPUT
              exit 0
          fi
          short_hash=$(cd connectedhomeip && git rev-parse --short HEAD)
          echo "short_hash=${short_hash}" >> $GITHUB_OUTPUT

      # Create Pull Request only if there were changes
      - name: Create Pull Request
        if: ${{ steps.update-submodule.outputs.empty != true }}
        uses: peter-evans/create-pull-request@v6
        with:
          commit-message: Update Matter SDK to `${{ steps.update-submodule.outputs.short_hash }}`
          title: Update Matter SDK to `${{ steps.update-submodule.outputs.short_hash }}`
          body: >
            Bumps [connectedhomeip](https://github.com/project-chip/connectedhomeip)
            from `${{ steps.update-submodule.outputs.short_hash_before }}` to
            `${{ steps.update-submodule.outputs.short_hash }}`.


            See full diff at
            https://github.com/project-chip/connectedhomeip/compare/${{ steps.update-submodule.outputs.short_hash_before }}...${{ steps.update-submodule.outputs.short_hash }}.
          branch: update-connectedhomeip-submodule-to-latest-master