pr-auto-updater.yml

name: PR Auto Updater
on:
  push:
    branches:
      - 'main'
      - 'release/*'
    tags-ignore:
      - '*'

jobs:
  pr-autoupdate:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 0
          token: ${{ secrets.BOT_TOKEN }}

      - name: Install GitHub CLI
        run: |
          sudo apt update
          sudo apt install gh -y

      - name: Configure Git
        run: |
          git config --global user.email ${{ vars.BOT_EMAIL }}
          git config --global user.name ${{ vars.BOT_USERNAME }}

      - name: Update PR branches
        env:
          GH_TOKEN: ${{ secrets.BOT_TOKEN }}
          GH_PROMPT_DISABLED: 1
        run: |
          prs=$(gh pr list --state open --base main --json number,headRefName -q '.[] | [.number, .headRefName] | @tsv')

          while IFS=$'\t' read -r number branch; do
            echo "Updating PR #$number (branch: $branch)"

            git fetch origin "$branch"
            git checkout "$branch"

            if git merge origin/main --no-edit; then
              git push origin HEAD:$branch
              echo "✅ Updated $branch"
            else
              echo "❌ Merge conflict on $branch — skipped."
              git merge --abort
            fi
          done <<< "$prs"