upstream-sync.yml

name: Upstream Sync

on:
  schedule:
    - cron: "0 9 * * 1"
  workflow_dispatch:

jobs:
  sync:
    name: Check upstream submodule
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
          fetch-depth: 0

      - name: Check for upstream updates
        id: check
        run: |
          cd zeroclaw
          git fetch origin main
          LOCAL=$(git rev-parse HEAD)
          REMOTE=$(git rev-parse origin/main)
          echo "local=$LOCAL" >> "$GITHUB_OUTPUT"
          echo "remote=$REMOTE" >> "$GITHUB_OUTPUT"
          if [ "$LOCAL" = "$REMOTE" ]; then
            echo "up_to_date=true" >> "$GITHUB_OUTPUT"
            echo "Submodule is up to date"
          else
            echo "up_to_date=false" >> "$GITHUB_OUTPUT"
            SHORT=$(echo "$REMOTE" | cut -c1-7)
            echo "short_hash=$SHORT" >> "$GITHUB_OUTPUT"
            COMMITS=$(git log --oneline "$LOCAL".."$REMOTE")
            echo "New commits:"
            echo "$COMMITS"
            {
              echo "commits<<EOF"
              echo "$COMMITS"
              echo "EOF"
            } >> "$GITHUB_OUTPUT"
          fi

      - name: Create sync branch and PR
        if: steps.check.outputs.up_to_date == 'false'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          BRANCH="chore/upstream-sync-${{ steps.check.outputs.short_hash }}"

          if git ls-remote --heads origin "$BRANCH" | grep -q "$BRANCH"; then
            echo "Branch $BRANCH already exists, skipping"
            exit 0
          fi

          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          git checkout -b "$BRANCH"

          cd zeroclaw
          git checkout origin/main
          cd ..

          git add zeroclaw
          git commit -m "chore(upstream): update zeroclaw submodule to ${{ steps.check.outputs.short_hash }}"

          git push origin "$BRANCH"

          BODY="## Upstream ZeroClaw Update
Updated zeroclaw submodule to \`${{ steps.check.outputs.short_hash }}\`.

### New upstream commits
\`\`\`
${{ steps.check.outputs.commits }}
\`\`\`

> Auto-generated by the upstream-sync workflow."

          gh pr create \
            --title "chore(upstream): update zeroclaw to ${{ steps.check.outputs.short_hash }}" \
            --body "$BODY" \
            --label "dependencies,upstream-sync" \
            --base main \
            --head "$BRANCH"