from __future__ import annotations

from pathlib import Path

from src.configurations.registry import CONFIGURATIONS, load_configuration_template
from src.placement.registry import PLACEMENT_SOLVERS
from src.relation_validators import VALIDATOR_REGISTRY


ROOT = Path(__file__).resolve().parents[1]


def test_configuration_development_standard_docs_exist() -> None:
    assert (ROOT / "docs" / "configuration-development-standard.md").exists()
    assert (ROOT / "docs" / "topology-json-authoring-guide.md").exists()
    assert (ROOT / "skill" / "references" / "configuration-development-standard.md").exists()
    assert (ROOT / "skill" / "references" / "topology-json-authoring-guide.md").exists()
    skill_text = (ROOT / "skill" / "SKILL.md").read_text(encoding="utf-8")
    assert "references/configuration-development-standard.md" in skill_text
    assert "references/topology-json-authoring-guide.md" in skill_text


def test_registered_configurations_have_standard_files() -> None:
    for family, spec in CONFIGURATIONS.items():
        assert spec.package_dir.exists()
        assert (spec.package_dir / "family.py").exists()
        assert (spec.package_dir / "topology.template.json").exists()
        assert (spec.package_dir / "placement_rules.py").exists()
        assert load_configuration_template(family).family == family


def test_registered_configurations_have_requirements_and_placement_solvers() -> None:
    for family in CONFIGURATIONS:
        requirement_dir = ROOT / "input" / "requirements" / "reducers" / family
        assert requirement_dir.exists()
        assert list(requirement_dir.glob("*.json"))
        assert family in PLACEMENT_SOLVERS


def test_all_topology_relation_types_have_validators() -> None:
    for family in CONFIGURATIONS:
        template = load_configuration_template(family)
        for relation in template.relations:
            assert relation.relation_type in VALIDATOR_REGISTRY


def test_configuration_standard_uses_flat_src_layout() -> None:
    docs = [
        ROOT / "docs" / "configuration-development-standard.md",
        ROOT / "docs" / "topology-json-authoring-guide.md",
        ROOT / "skill" / "references" / "configuration-development-standard.md",
        ROOT / "skill" / "references" / "topology-json-authoring-guide.md",
    ]
    for path in docs:
        text = path.read_text(encoding="utf-8")
        assert "src/configurations/" in text
        if "configuration-development-standard" in path.name:
            assert "src/placement/" in text
        assert "src/planetary_reducer" not in text


def test_topology_json_authoring_guide_covers_schema_fields() -> None:
    text = (ROOT / "docs" / "topology-json-authoring-guide.md").read_text(encoding="utf-8")
    for field in [
        "template_id",
        "family",
        "description",
        "nodes",
        "relations",
        "id",
        "kind",
        "role",
        "gear_type",
        "repeat",
        "formula_ref",
        "stage_id",
        "local_role",
        "source",
        "target",
        "relation_type",
        "carrier_ref",
        "mesh_id",
    ]:
        assert field in text
    for relation_type in VALIDATOR_REGISTRY:
        assert relation_type in text