"""Tests for agent frontmatter schema validation (WP-0007 T03)."""

from __future__ import annotations

from pathlib import Path

from kaizen_agentic.registry import AgentRegistry

REPO_AGENTS = Path(__file__).parent.parent / "agents"


def _registry(tmp_path: Path, files: dict) -> AgentRegistry:
    agents = tmp_path / "agents"
    agents.mkdir(parents=True)
    for filename, content in files.items():
        (agents / filename).write_text(content)
    return AgentRegistry(agents)


class TestFrontmatterSchema:
    def test_repo_agents_are_schema_valid(self):
        # The shipped agents/ must always pass the schema.
        assert AgentRegistry(REPO_AGENTS).validate_frontmatter_schema() == {}

    def test_good_agent_passes(self, tmp_path: Path):
        reg = _registry(
            tmp_path,
            {
                "agent-good.md": (
                    "---\nname: good\ndescription: A fine agent\n"
                    "category: testing\nmemory: enabled\n---\nbody\n"
                )
            },
        )
        assert reg.validate_frontmatter_schema() == {}

    def test_missing_required_fields(self, tmp_path: Path):
        reg = _registry(
            tmp_path,
            {"agent-x.md": "---\nname: x\ncategory: testing\n---\nbody\n"},
        )
        errors = reg.validate_frontmatter_schema()["agent-x.md"]
        assert any("description" in e for e in errors)

    def test_invalid_category(self, tmp_path: Path):
        reg = _registry(
            tmp_path,
            {
                "agent-x.md": (
                    "---\nname: x\ndescription: d\ncategory: nonsense\n---\nb\n"
                )
            },
        )
        errors = reg.validate_frontmatter_schema()["agent-x.md"]
        assert any("invalid category" in e for e in errors)

    def test_invalid_memory(self, tmp_path: Path):
        reg = _registry(
            tmp_path,
            {
                "agent-x.md": (
                    "---\nname: x\ndescription: d\ncategory: testing\n"
                    "memory: maybe\n---\nb\n"
                )
            },
        )
        errors = reg.validate_frontmatter_schema()["agent-x.md"]
        assert any("invalid memory" in e for e in errors)

    def test_missing_frontmatter(self, tmp_path: Path):
        reg = _registry(tmp_path, {"agent-x.md": "just text, no frontmatter\n"})
        assert reg.validate_frontmatter_schema()["agent-x.md"] == [
            "missing YAML frontmatter"
        ]