name: Validate data catalog

on:
  pull_request:
  push:
    branches: [main]

permissions:
  contents: read

jobs:
  validate:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.13"
      - name: Validate structured catalog
        run: |
          python - <<'PY'
          import hashlib
          import json
          from pathlib import Path

          root = Path("structured")
          catalog = json.loads((root / "catalog-v1.json").read_text())
          for entry in catalog["datasets"]:
              path = root / "v1" / entry["filename"]
              digest = hashlib.sha256(path.read_bytes()).hexdigest()
              if digest != entry["sha256"]:
                  raise SystemExit(f"{path}: checksum mismatch")
              if path.stat().st_size != entry["bytes"]:
                  raise SystemExit(f"{path}: size mismatch")
          print(f"Validated {len(catalog['datasets'])} catalog entries")
          PY
      - name: Check archive integrity
        run: |
          python - <<'PY'
          from pathlib import Path
          from zipfile import BadZipFile, ZipFile

          archives = sorted(Path(".").glob("**/*.zip"))
          for archive in archives:
              try:
                  with ZipFile(archive) as source:
                      bad = source.testzip()
              except BadZipFile as error:
                  raise SystemExit(f"{archive}: {error}") from error
              if bad:
                  raise SystemExit(f"{archive}: corrupt member {bad}")
          print(f"Validated {len(archives)} ZIP archives")
          PY