sync_release_pr.yml

name: "Sync Release to Main"

on:
  push:
    branches:
      # As packages opt into batched releases, they need to be added here
      - 'release-go_router-*'

jobs:
  create_sync_pr:
    runs-on: ubuntu-latest
    permissions:
      # The create-pull-request action needs both content and pull-requests permissions.
      contents: write
      pull-requests: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
        with:
          fetch-depth: 0 # Fetch history to allow branch comparison

      - name: Create Pull Request
        env:
          GITHUB_TOKEN: ${{ secrets.FLUTTERGITHUBBOT_TOKEN }}
        run: |
          # 1. Fetch main so the runner can see the difference
          git fetch origin main

          # 2. Verify there are actually new commits to sync
          # This prevents the "GraphQL: No commits between main..." error
          COMMITS_COUNT=$(git rev-list --count origin/main..HEAD)

          if [ "$COMMITS_COUNT" -eq "0" ]; then
            echo "No new commits found on ${{ github.ref_name }} compared to main. Nothing to sync."
            exit 0
          fi

          # 3. Extract release name without version for label
          BRANCH_NAME="${{ github.ref_name }}"
          RELEASE_NAME="${BRANCH_NAME%-*}"

          # 4. Create the PR directly
          gh pr create \
            --base "main" \
            --head "${{ github.ref_name }}" \
            --title "Sync ${{ github.ref_name }} to main" \
            --body "This automated PR syncs the changes from the release branch ${{ github.ref_name }} back to the main branch." \
            --label "override: post-${RELEASE_NAME}"