name: Validate frontmatter and structure

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

jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0

      - name: Set up Python
        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
        with:
          python-version: "3.12"

      - name: Install dependencies
        run: pip install pyyaml

      - name: Run validator
        run: python .github/scripts/validate_frontmatter.py --root .