"""B05 구조물 정본 저장·조회·검증 테스트 (크로스체크 지적 2 반영 강화판)."""

import json

import pytest

from B05_Profile.B05_Profile_Structures_Repository import (
    StructureRevisionConflict,
    load_structures,
    save_structures,
    structures_file_path,
)
from B05_Profile.B05_Profile_Structures_Schema import StructureInstance


@pytest.fixture()
def project_root(tmp_path):
    return str(tmp_path / "project")


def _point(chainage=100.0, type_id="erosion_check", **overrides):
    # 골막이 형식(재료)은 설계자 선택이라 필수 — 길이·높이는 사용자 확정 기본값이 있다.
    data = {
        "type_id": type_id,
        "placement": "point",
        "chainage_m": chainage,
        "options": {"form": "돌"},
    }
    data.update(overrides)
    return StructureInstance.model_validate(data)


def _interval(start=10.0, end=40.0, type_id="ditch_side", **overrides):
    # 측구 형식도 필수 선택 — 깊이는 별표2 단일값이라 기본값이 있다.
    data = {
        "type_id": type_id,
        "placement": "interval",
        "start_m": start,
        "end_m": end,
        "options": {"form": "일반형(제형)"},
    }
    data.update(overrides)
    return StructureInstance.model_validate(data)


# ── 기본 왕복·판번호 (기존 회귀) ────────────────────────────────────────────


def test_load_empty_project_returns_revision_zero(project_root):
    assert load_structures(project_root) == (0, [])


def test_disabled_type_structures_still_save_and_load(project_root):
    """B06 이관으로 enabled=False가 된 타입(예: 측구)의 기존 저장분 — 백엔드는
    전체 레지스트리로 검증하므로 로드·재저장이 계속 통과해야 한다(2026-08-17 재편).
    화면 노출만 프론트 enabled 필터가 막는다."""
    revision = save_structures(project_root, [_interval(type_id="ditch_side")], base_revision=0)
    assert revision == 1
    _, loaded = load_structures(project_root)
    assert loaded[0].type_id == "ditch_side"


def test_save_then_load_roundtrip(project_root):
    revision = save_structures(project_root, [_point(), _interval()], base_revision=0)
    assert revision == 1
    loaded_revision, loaded = load_structures(project_root)
    assert loaded_revision == 1
    assert len(loaded) == 2


def test_save_assigns_and_keeps_structure_ids(project_root):
    save_structures(project_root, [_point()], base_revision=0)
    _, loaded = load_structures(project_root)
    kept = loaded[0].structure_id
    assert kept

    loaded[0].chainage_m = 150.0
    save_structures(project_root, loaded, base_revision=1)
    _, again = load_structures(project_root)
    assert again[0].structure_id == kept


def test_stale_base_revision_raises_conflict(project_root):
    save_structures(project_root, [_point()], base_revision=0)
    with pytest.raises(StructureRevisionConflict):
        save_structures(project_root, [_point(300.0)], base_revision=0)


def test_pipe_managed_types_are_rejected(project_root):
    with pytest.raises(ValueError):
        save_structures(project_root, [_point(50.0, type_id="pipe")], base_revision=0)


def test_unknown_type_id_is_rejected(project_root):
    with pytest.raises(ValueError):
        save_structures(project_root, [_point(50.0, type_id="no_such_type")], base_revision=0)


def test_saved_file_is_valid_json_with_revision(project_root):
    save_structures(project_root, [_point()], base_revision=0)
    with open(structures_file_path(project_root), encoding="utf-8") as handle:
        payload = json.load(handle)
    assert payload["revision"] == 1


def test_corrupt_file_does_not_crash_load(project_root):
    save_structures(project_root, [_point()], base_revision=0)
    with open(structures_file_path(project_root), "w", encoding="utf-8") as handle:
        handle.write("{ broken json")
    assert load_structures(project_root) == (0, [])


# ── 폐지 필드(설치측·이격) 이관 — 2026-08-17 사용자 지시 ────────────────────


def _write_raw(project_root, structures):
    save_structures(project_root, [_point()], base_revision=0)
    with open(structures_file_path(project_root), "w", encoding="utf-8") as handle:
        json.dump({"revision": 3, "structures": structures}, handle, ensure_ascii=False)


def test_legacy_side_and_offset_keys_are_dropped_on_load(project_root):
    # 구 저장분을 그대로 넘기면 extra="forbid"에 걸려 정본이 통째로 버려진다.
    _write_raw(
        project_root,
        [
            {
                "structure_id": "abc",
                "type_id": "erosion_check",
                "placement": "point",
                "chainage_m": 100.0,
                "side": "left",
                "offset_m": 2.5,
                "options": {"form": "돌"},
            }
        ],
    )
    revision, loaded = load_structures(project_root)
    assert revision == 3
    assert len(loaded) == 1
    assert loaded[0].structure_id == "abc"
    assert not hasattr(loaded[0], "side")
    assert not hasattr(loaded[0], "offset_m")


def test_legacy_keys_disappear_from_file_after_next_save(project_root):
    _write_raw(
        project_root,
        [
            {
                "type_id": "erosion_check",
                "placement": "point",
                "chainage_m": 100.0,
                "side": "left",
                "offset_m": 2.5,
                "options": {"form": "돌"},
            }
        ],
    )
    _, loaded = load_structures(project_root)
    save_structures(project_root, loaded, base_revision=3)
    with open(structures_file_path(project_root), encoding="utf-8") as handle:
        payload = json.load(handle)
    assert "side" not in payload["structures"][0]
    assert "offset_m" not in payload["structures"][0]


def test_other_unknown_keys_are_still_rejected(project_root):
    # 두 키만 떨어낸다 — 오타 키까지 통과시키면 정본이 조용히 썩는다.
    _write_raw(
        project_root,
        [
            {
                "type_id": "erosion_check",
                "placement": "point",
                "chainage_m": 100.0,
                "sidee": "left",
                "options": {"form": "돌"},
            }
        ],
    )
    assert load_structures(project_root) == (0, [])


# ── 크로스체크 지적 2: 서버 검증 강화 ──────────────────────────────────────


def test_placement_mismatching_registry_is_rejected(project_root):
    """옹벽(레지스트리 interval)을 point로 보내면 거절해야 한다."""
    wall_as_point = _point(50.0, type_id="retaining_wall", options={"height_m": 2.0})
    with pytest.raises(ValueError, match="배치형태"):
        save_structures(project_root, [wall_as_point], base_revision=0)


def test_undefined_option_key_is_rejected(project_root):
    bad = _point(options={"form": "돌", "no_such_option": 1})
    with pytest.raises(ValueError, match="옵션"):
        save_structures(project_root, [bad], base_revision=0)


def test_negative_number_option_is_rejected(project_root):
    bad = _point(options={"form": "돌", "height_m": -999})
    with pytest.raises(ValueError, match="0 이상"):
        save_structures(project_root, [bad], base_revision=0)


def test_non_numeric_number_option_is_rejected(project_root):
    bad = _point(options={"form": "돌", "height_m": "높음"})
    with pytest.raises(ValueError, match="숫자"):
        save_structures(project_root, [bad], base_revision=0)


def test_select_option_outside_choices_is_rejected(project_root):
    bad = _interval(options={"form": "없는형식"})
    with pytest.raises(ValueError, match="선택지"):
        save_structures(project_root, [bad], base_revision=0)


def test_detail_required_option_missing_is_accepted_at_b05(project_root):
    """옹벽 형식은 phase=detail — B05는 유무·위치 단계라 비워도 저장된다.

    필수 원칙(미확정 기본값 = 필수)은 유지되되 강제 시점이 B06/B07로 옮겨졌다
    (2026-08-17 사용자 확정). 길이·높이는 2026-08-19 지시로 B05 필수가 됐으므로
    채워서 보낸다 — 비운 것은 detail(형식)뿐이다.
    """
    wall = _interval(type_id="retaining_wall", options={"length_m": 30.0, "height_m": 2.5})
    assert save_structures(project_root, [wall], base_revision=0) == 1


def test_b05_phase_required_option_is_still_enforced(project_root):
    """phase=b05인 필수 옵션이 생기면 여전히 강제된다 — 완화는 detail에 한한다."""
    from B05_Profile import B05_Profile_Structures_Repository as repo_module
    from B05_Profile.B05_Profile_Structures_Schema import (
        StructureOptionField,
        StructureType,
    )

    fake = StructureType(
        type_id="fake_b05_required",
        group="Z",
        name="테스트",
        placement="point",
        options=[
            StructureOptionField(
                key="must", label="필수", input="number", required=True, phase="b05"
            )
        ],
    )
    original = repo_module.structure_type_map

    def patched():
        mapping = dict(original())
        mapping[fake.type_id] = fake
        return mapping

    repo_module.structure_type_map = patched
    try:
        bad = _point(type_id="fake_b05_required", options={})
        with pytest.raises(ValueError, match="필수"):
            save_structures(project_root, [bad], base_revision=0)
    finally:
        repo_module.structure_type_map = original


def test_required_option_present_is_accepted(project_root):
    wall = _interval(
        type_id="retaining_wall",
        options={"form": "반중력식", "length_m": 30.0, "height_m": 2.5},
    )
    assert save_structures(project_root, [wall], base_revision=0) == 1


def test_duplicate_structure_ids_are_rejected(project_root):
    first = _point()
    second = _point(200.0)
    first.structure_id = second.structure_id = "dup"
    with pytest.raises(ValueError, match="중복"):
        save_structures(project_root, [first, second], base_revision=0)


def test_position_beyond_route_length_is_rejected(project_root):
    with pytest.raises(ValueError, match="연장"):
        save_structures(project_root, [_point(999.0)], base_revision=0, max_chainage_m=500.0)
    with pytest.raises(ValueError, match="연장"):
        save_structures(
            project_root, [_interval(490.0, 600.0)], base_revision=0, max_chainage_m=500.0
        )


def test_position_within_route_length_is_accepted(project_root):
    assert (
        save_structures(project_root, [_point(499.0)], base_revision=0, max_chainage_m=500.0) == 1
    )


def test_no_route_length_skips_range_check(project_root):
    """노선 연장을 모르면(None) 범위 검증은 건너뛴다 — 저장 자체는 허용."""
    assert save_structures(project_root, [_point(9999.0)], base_revision=0) == 1