new-activity-validation.yml

# Ensuring that every time a new directory is added to the repository, 
# the README.md file in the root is updated with a reference to its content.

name: Validate README.md Update

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  check-readme:
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repository
        uses: actions/checkout@v3

      - name: Set up Git
        run: git fetch --all

      - name: Identify new directories
        id: new_dirs
        run: |
          new_dirs=$(git diff --name-status origin/main | awk '$1 == "A" && $2 ~ /\/$/ {print $2}')
          echo "New directories added: $new_dirs"
          echo "::set-output name=new_dirs::$new_dirs"

      - name: Check if README.md was modified
        if: steps.new_dirs.outputs.new_dirs != ''
        run: |
          readme_changed=$(git diff --name-only origin/main | grep -c "README.md" || true)
          if [ $readme_changed -eq 0 ]; then
            echo "README.md was not updated. Please update it to reflect new directories."
            exit 1
          else
            echo "README.md was updated."
          fi