name: sync-dev-to-vX.Y-dev

# author: @ralfhandl

#
# This workflow creates PRs to update the vX.Y-dev branch with the latest changes from dev
#

# run this on push to dev
on:
  push:
    branches:
      - dev

jobs:
  sync-branches:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Create pull requests
        id: pull_requests
        shell: bash
        run: |
          DEV_BRANCHES=$(git branch -r --list origin/v?.?-dev)
          for DEV_BRANCH in $DEV_BRANCHES; do
            BASE=${DEV_BRANCH:7}
            EXISTS=$(gh pr list --base $BASE --head $HEAD \
              --json number --jq '.[] | .number')
            if [ ! -z "$EXISTS" ]; then
              echo "PR #$EXISTS already wants to merge $HEAD into $BASE"
              continue
            fi

            gh pr create --base $BASE --head $HEAD \
              --label "Housekeeping" \
              --title "$BASE: update from $HEAD" \
              --body "Merge \`$HEAD\` into \`$BASE\`."
          done
        env:
          GH_TOKEN: ${{ github.token }}
          HEAD: dev