name: Check Line Endings

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

permissions:
  contents: read

jobs:
  check-line-endings:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1

      - name: Check for CRLF line endings in markdown files
        run: |
          CRLF_FILES=$(grep -rl $'\r' --include="*.md" . 2>/dev/null || true)
          if [ -z "$CRLF_FILES" ]; then
            echo "✅ No CRLF line endings found in markdown files"
          else
            echo "❌ CRLF line endings found in markdown files"
            echo "Files with CRLF line endings:"
            echo "$CRLF_FILES"
            exit 1
          fi