"""Tests for agent/skill_utils.py."""

from agent.skill_utils import extract_skill_conditions, iter_skill_index_files


def test_metadata_as_dict_with_hermes():
    """Normal case: metadata is a dict containing hermes keys."""
    frontmatter = {
        "metadata": {
            "hermes": {
                "fallback_for_toolsets": ["toolset_a"],
                "requires_toolsets": ["toolset_b"],
                "fallback_for_tools": ["tool_x"],
                "requires_tools": ["tool_y"],
            }
        }
    }
    result = extract_skill_conditions(frontmatter)
    assert result["fallback_for_toolsets"] == ["toolset_a"]
    assert result["requires_toolsets"] == ["toolset_b"]
    assert result["fallback_for_tools"] == ["tool_x"]
    assert result["requires_tools"] == ["tool_y"]


def test_metadata_as_string_does_not_crash():
    """Bug case: metadata is a non-dict truthy value (e.g. a YAML string)."""
    frontmatter = {"metadata": "some text"}
    result = extract_skill_conditions(frontmatter)
    assert result == {
        "fallback_for_toolsets": [],
        "requires_toolsets": [],
        "fallback_for_tools": [],
        "requires_tools": [],
    }


def test_metadata_as_none():
    """metadata key is present but set to null/None."""
    frontmatter = {"metadata": None}
    result = extract_skill_conditions(frontmatter)
    assert result == {
        "fallback_for_toolsets": [],
        "requires_toolsets": [],
        "fallback_for_tools": [],
        "requires_tools": [],
    }


def test_metadata_missing_entirely():
    """metadata key is absent from frontmatter."""
    frontmatter = {"name": "my-skill", "description": "Does stuff."}
    result = extract_skill_conditions(frontmatter)
    assert result == {
        "fallback_for_toolsets": [],
        "requires_toolsets": [],
        "fallback_for_tools": [],
        "requires_tools": [],
    }


def test_iter_skill_index_files_prunes_dependency_dirs(tmp_path):
    real = tmp_path / "real-skill"
    real.mkdir()
    (real / "SKILL.md").write_text("---\nname: real-skill\n---\n", encoding="utf-8")

    nested = (
        tmp_path
        / "bring"
        / "scripts"
        / ".venv"
        / "lib"
        / "python3.13"
        / "site-packages"
        / "typer"
        / ".agents"
        / "skills"
        / "typer"
    )
    nested.mkdir(parents=True)
    (nested / "SKILL.md").write_text("---\nname: typer\n---\n", encoding="utf-8")

    node_module = (
        tmp_path
        / "web-skill"
        / "node_modules"
        / "dep"
        / ".agents"
        / "skills"
        / "dep"
    )
    node_module.mkdir(parents=True)
    (node_module / "SKILL.md").write_text("---\nname: dep\n---\n", encoding="utf-8")

    found = list(iter_skill_index_files(tmp_path, "SKILL.md"))

    assert found == [real / "SKILL.md"]