import re
from pathlib import Path

try:
    import yaml  # type: ignore
except Exception:
    yaml = None


def test_manifest_loads():
    """Ensure the .mindmodel/manifest.yaml can be read and contains a 'files' list."""
    p = Path(".mindmodel/manifest.yaml")
    assert p.exists(), ".mindmodel/manifest.yaml must exist"
    text = p.read_text(encoding="utf-8")

    if yaml is not None:
        data = yaml.safe_load(text)
        assert isinstance(data, dict), "manifest should parse to a mapping"
        assert "files" in data, "top-level 'files' key missing"
        assert isinstance(data["files"], list), "'files' should be a list"
        assert len(data["files"]) >= 1, "'files' must have at least one entry"
    else:
        # Fallback simple checks if PyYAML is not available in the environment.
        assert re.search(r"^\s*files:\s*$", text, re.M), (
            "manifest must contain top-level 'files:'"
        )
        assert re.search(r"^\s*-\s+path:\s+", text, re.M), (
            "manifest must contain at least one '- path:' entry"
        )