from types import SimpleNamespace

from app.services.part_key_service import build_scene_manifest, get_effective_assignments


def test_build_scene_manifest_prefers_canonical_material_from_resolved_assignments():
    cad_file = SimpleNamespace(
        id="cad-1",
        resolved_material_assignments={
            "roller_part": {
                "source_name": "KERO_Z-575693-QP-DRH_ISB_1_1",
                "prim_path": "/Root/Assembly/roller_part",
                "canonical_material": "HARTOMAT_010101_Steel-Bare",
            }
        },
        manual_material_overrides=None,
        source_material_assignments=None,
        parsed_objects=None,
    )

    manifest = build_scene_manifest(cad_file)

    assert manifest["parts"] == [
        {
            "part_key": "roller_part",
            "source_name": "KERO_Z-575693-QP-DRH_ISB_1_1",
            "prim_path": "/Root/Assembly/roller_part",
            "effective_material": "HARTOMAT_010101_Steel-Bare",
            "assignment_provenance": "auto",
            "is_unassigned": False,
        }
    ]
    assert manifest["unassigned_parts"] == []
    assert get_effective_assignments(cad_file) == {
        "roller_part": "HARTOMAT_010101_Steel-Bare",
    }


def test_build_scene_manifest_normalizes_legacy_schaeffler_material_names():
    cad_file = SimpleNamespace(
        id="cad-legacy",
        resolved_material_assignments={
            "roller_part": {
                "source_name": "KERO_Z-575693-QP-DRH_ISB_1_1",
                "prim_path": "/Root/Assembly/roller_part",
                "canonical_material": "SCHAEFFLER_010101_Steel-Bare",
            }
        },
        manual_material_overrides={"manual_part": "SCHAEFFLER_020101_Durotect-Blue"},
        source_material_assignments={"roller": "SCHAEFFLER_030103_Elastomer-Black"},
        parsed_objects=None,
    )

    manifest = build_scene_manifest(cad_file)

    assert manifest["parts"] == [
        {
            "part_key": "roller_part",
            "source_name": "KERO_Z-575693-QP-DRH_ISB_1_1",
            "prim_path": "/Root/Assembly/roller_part",
            "effective_material": "HARTOMAT_010101_Steel-Bare",
            "assignment_provenance": "auto",
            "is_unassigned": False,
        }
    ]
    assert get_effective_assignments(cad_file) == {
        "roller_part": "HARTOMAT_010101_Steel-Bare",
    }


def test_build_scene_manifest_adds_semantic_alias_for_deduplicated_instance_keys():
    cad_file = SimpleNamespace(
        id="cad-alias",
        resolved_material_assignments={
            "roller_part_2": {
                "source_name": "RollerPart",
                "prim_path": "/Root/Assembly/roller_part_2",
                "canonical_material": "HARTOMAT_010101_Steel-Bare",
            }
        },
        manual_material_overrides=None,
        source_material_assignments=None,
        parsed_objects=None,
    )

    manifest = build_scene_manifest(cad_file)

    assert manifest["parts"] == [
        {
            "part_key": "roller_part_2",
            "source_name": "RollerPart",
            "prim_path": "/Root/Assembly/roller_part_2",
            "effective_material": "HARTOMAT_010101_Steel-Bare",
            "assignment_provenance": "auto",
            "is_unassigned": False,
        },
        {
            "part_key": "roller_part",
            "source_name": "RollerPart",
            "prim_path": "/Root/Assembly/roller_part_2",
            "effective_material": "HARTOMAT_010101_Steel-Bare",
            "assignment_provenance": "auto",
            "is_unassigned": False,
        },
    ]
    assert manifest["unassigned_parts"] == []
    assert get_effective_assignments(cad_file) == {
        "roller_part_2": "HARTOMAT_010101_Steel-Bare",
        "roller_part": "HARTOMAT_010101_Steel-Bare",
    }


def test_build_scene_manifest_skips_alias_when_canonical_key_already_exists():
    cad_file = SimpleNamespace(
        id="cad-existing-alias",
        resolved_material_assignments={
            "roller_part": {
                "source_name": "RollerPart",
                "prim_path": "/Root/Assembly/roller_part",
                "canonical_material": "HARTOMAT_010101_Steel-Bare",
            },
            "roller_part_2": {
                "source_name": "RollerPart",
                "prim_path": "/Root/Assembly/roller_part_2",
                "canonical_material": "HARTOMAT_020202_Steel-Bare",
            },
        },
        manual_material_overrides=None,
        source_material_assignments=None,
        parsed_objects=None,
    )

    manifest = build_scene_manifest(cad_file)

    assert [part["part_key"] for part in manifest["parts"]] == [
        "roller_part",
        "roller_part_2",
    ]
    assert get_effective_assignments(cad_file) == {
        "roller_part": "HARTOMAT_010101_Steel-Bare",
        "roller_part_2": "HARTOMAT_020202_Steel-Bare",
    }


def test_build_scene_manifest_alias_inherits_leaf_manual_override():
    cad_file = SimpleNamespace(
        id="cad-manual-alias",
        resolved_material_assignments={
            "roller_part_3": {
                "source_name": "RollerPart",
                "prim_path": "/Root/Assembly/roller_part_3",
                "canonical_material": "HARTOMAT_010101_Steel-Bare",
            }
        },
        manual_material_overrides={
            "roller_part_3": "SCHAEFFLER_020101_Durotect-Blue",
        },
        source_material_assignments=None,
        parsed_objects=None,
    )

    manifest = build_scene_manifest(cad_file)
    alias_part = next(part for part in manifest["parts"] if part["part_key"] == "roller_part")

    assert alias_part == {
        "part_key": "roller_part",
        "source_name": "RollerPart",
        "prim_path": "/Root/Assembly/roller_part_3",
        "effective_material": "HARTOMAT_020101_Durotect-Blue",
        "assignment_provenance": "manual",
        "is_unassigned": False,
    }
    assert get_effective_assignments(cad_file) == {
        "roller_part_3": "HARTOMAT_020101_Durotect-Blue",
        "roller_part": "HARTOMAT_020101_Durotect-Blue",
    }


def test_build_scene_manifest_adds_semantic_alias_for_exporter_af_suffix_keys():
    cad_file = SimpleNamespace(
        id="cad-af-alias",
        resolved_material_assignments={
            "kero_z_575693_qp_drh_isb_1_af6": {
                "source_name": "KERO_Z-575693-QP-DRH_ISB_1_AF6_",
                "prim_path": "/Root/Assembly/kero_z_575693_qp_drh_isb_1_af6",
                "canonical_material": "HARTOMAT_010101_Steel-Bare",
            }
        },
        manual_material_overrides=None,
        source_material_assignments=None,
        parsed_objects=None,
    )

    manifest = build_scene_manifest(cad_file)

    assert [part["part_key"] for part in manifest["parts"]] == [
        "kero_z_575693_qp_drh_isb_1_af6",
        "kero_z_575693_qp_drh_isb_1",
    ]
    assert get_effective_assignments(cad_file) == {
        "kero_z_575693_qp_drh_isb_1_af6": "HARTOMAT_010101_Steel-Bare",
        "kero_z_575693_qp_drh_isb_1": "HARTOMAT_010101_Steel-Bare",
    }