sync-upstream.yml

name: Sync from OpenIPC upstream

on:
  schedule:
    # Daily at 03:17 UTC. The non-round minute avoids peak Actions load.
    - cron: "17 3 * * *"
  workflow_dispatch:

permissions:
  contents: write

concurrency:
  group: devourer-upstream-sync
  cancel-in-progress: false

jobs:
  sync:
    name: Sync master and OpenHD branches
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Check out the fork
        uses: actions/checkout@v4
        with:
          ref: master
          fetch-depth: 0
          submodules: false

      - name: Merge upstream changes
        shell: bash
        run: |
          set -euo pipefail

          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git remote add upstream https://github.com/OpenIPC/devourer.git
          git fetch --no-tags upstream master

          # Workflow files stay owned by the OpenHD fork. GITHUB_TOKEN cannot
          # push upstream workflow changes, and importing them would also let
          # upstream redefine jobs that run with this fork's credentials.
          if ! git merge-base --is-ancestor upstream/master HEAD; then
            git merge --no-commit --no-ff upstream/master
            git restore --source=HEAD --staged --worktree .github/workflows
            git commit --no-edit
          fi
          git push origin HEAD:master

          # Keep the OpenHD FHSS and hardware fixes on top of synchronized
          # upstream master.
          git fetch --no-tags origin openhd-fhss-session
          git switch --create openhd-fhss-session --track origin/openhd-fhss-session
          git merge --no-edit master
          git push origin HEAD:openhd-fhss-session

          # OpenHD pins the runtime-logging branch. It must inherit the FHSS
          # branch as well as master so USB2 and other OpenHD fixes are present.
          git fetch --no-tags origin openhd-runtime-logging
          git switch --create openhd-runtime-logging --track origin/openhd-runtime-logging
          git merge --no-edit openhd-fhss-session
          git push origin HEAD:openhd-runtime-logging