name: Duplicate Link Detector

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

permissions:
  contents: read

jobs:
  duplicates:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.x"

      - name: Detect duplicate URLs in markdown
        run: |
          set -euo pipefail
          python3 .github/scripts/detect_duplicate_links.py