auto_merge.yml

name: Auto-merge PRs after one week

on:
  schedule:
    - cron: '0 0 * * *'  # 매일 자정에 실행
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]

jobs:
  auto-merge:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
      contents: write
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Check PR age and merge
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # 모든 열린 PR 가져오기
          prs=$(gh pr list --json number,createdAt,mergeStateStatus --state open)
          
          # 각 PR 확인
          echo "$prs" | jq -c '.[]' | while read pr; do
            number=$(echo $pr | jq -r .number)
            created_at=$(echo $pr | jq -r .createdAt)
            merge_state=$(echo $pr | jq -r .mergeStateStatus)
            
            # PR 나이 계산 (일 단위)
            age=$(( ( $(date +%s) - $(date -d "$created_at" +%s) ) / 86400 ))
            
            # 7일 이상 되었고 병합 가능한 상태인지 확인
            if [ $age -ge 7 ] && [ "$merge_state" == "CLEAN" ]; then
              echo "Merging PR #$number (age: $age days)"
              gh pr merge $number --auto --merge
            else
              echo "PR #$number is not ready for auto-merge (age: $age days, state: $merge_state)"
            fi
          done