auto-merge-readme.yml

name: Auto Merge README Changes

on:
  pull_request_target:
    types: [opened, synchronize, reopened]
    paths:
      - 'README.md'

permissions:
  contents: write
  pull-requests: write
  issues: write
  actions: write

jobs:
  auto-merge:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Check if PR only modifies README.md
        id: check_files
        run: |
          base_sha="${{ github.event.pull_request.base.sha }}"
          head_sha="${{ github.event.pull_request.head.sha }}"
          files_changed=$(git diff --name-only $base_sha $head_sha)
          if [ "$files_changed" == "README.md" ]; then
            echo "only_readme=true" >> $GITHUB_OUTPUT
          else
            echo "only_readme=false" >> $GITHUB_OUTPUT
          fi

      - name: Auto-merge PR
        if: steps.check_files.outputs.only_readme == 'true'
        run: |
          gh pr merge --auto --merge "${{ github.event.pull_request.number }}"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}