pr-checker.yml

name: PR Checker

on:
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  check:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout PR
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Get list of changed files
        run: |
          CHANGED_FILES=$(git diff --name-only ${{ github.event.pull_request.base.sha }}..${{ github.sha }})
          echo "Changed files: $CHANGED_FILES"
          echo "Base commit: ${{ github.event.pull_request.base.sha }}"
          echo "Current commit: ${{ github.sha }}"

          if [[ "$CHANGED_FILES" == "README.md" ]]; then
            echo ":white_check_mark: README.md file is allowed to change."
          else
            echo ":x: Only README.md is allowed to change. Found changes or restricted files: $CHANGED_FILES"
            exit 1
          fi