main-develop-sync.yml

name: sync develop with main
# creates both a branch and a PR to sync changes from main back to the develop branches
on:
  push:
    branches:
    - main
jobs:
  sync:
    strategy:
      fail-fast: false
      matrix:
        branch:
        - icm
        - iom
        - pwa
        - common
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
      contents: write
    steps:
    - uses: actions/checkout@v3
      with:
        fetch-depth: 0
    - name: Create integration branch
      shell: bash
      run: |
        INTEGRATE="feature/${{ matrix.branch }}/integrate-main"
        # delete previous if exists
        git branch --delete $INTEGRATE || true
        git branch $INTEGRATE
        git checkout $INTEGRATE
        # force push to override a previously existing branch, if it exists
        git push --force --set-upstream origin $INTEGRATE
    - name: Create PR if necessary
      shell: bash
      run: |
        SUBJECT="chore: integrate main to develop/${{ matrix.branch }}"
        BODY="Automated Sync PR"
        # this may fail if a PR already exists, this is ignored
        gh pr create --base "develop/${{ matrix.branch }}" --title "$SUBJECT" --body "$BODY" || true
      env:
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}