"""712-2 지킴 — 단위 한 벌(`master_unit`) · 다섯 자리가 같은 모듈을 씀 · 알약 배 전수."""

from __future__ import annotations

import sys
from decimal import Decimal
from pathlib import Path

ROOT = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(ROOT / "resources/master_data/scripts"))
sys.path.insert(0, str(ROOT))

import check_master as cm  # noqa: E402
import master_basis as mbs  # noqa: E402
import master_formula as mf  # noqa: E402
import master_material as mm  # noqa: E402
import master_pick as mp  # noqa: E402
import master_unit as mu  # noqa: E402


def test_alias_and_count_group():
    assert mu.plain("EA") == mu.plain("ea") == "개"
    assert mu.plain("Ton") == mu.plain("t") == mu.plain("톤") == "톤"
    assert mu.plain("㎥") == "m3" and mu.plain("리터") == mu.plain("ℓ") == "ℓ"
    assert mu.same_kind("본", "개") and mu.same_kind("매", "EA")
    assert not mu.same_kind("조", "개")  # 한 조 = 여럿 — 묶음 밖
    assert mu.note("본", "개") == "본 = 개(개수 1:1)"
    assert mm.plain_unit("EA") == mu.plain("EA")
    assert mp.convert is mu.convert and mp.UNITS is mu.UNITS


def test_same_kind_convert():
    assert mu.convert(Decimal(1000), "톤", "kg") == Decimal(1)  # 톤 당 1000 원 = kg 당 1 원
    assert mu.convert(Decimal(5), "kg", "톤") == Decimal(5000)
    assert mu.convert(Decimal(7), "m", "km") == Decimal(7000)
    assert mu.factor("kg", "ton") == Decimal("0.001")  # B08 「/1000」(kg → ton) 손 식과 같은 값
    assert mu.note("kg", "톤") == "kg → 톤 ×1000"
    assert mu.convert(Decimal(3), "kg", "ℓ") == Decimal(3)  # 밀도 = 경고만 · 그대로
    assert "성격 다름" in mu.note("ℓ", "㎾h")


def test_volume_weight_only_when_picked():
    """부피 ↔ 무게 = 단위중량 표 고른 줄이 있을 때만 · 기본 줄 없음."""
    master = mf.Master(cm.load())
    assert mu.factor("㎥", "톤") is None
    assert "단위중량(CC000337)" in mu.note("㎥", "톤")
    rho = mu.unit_weight(master, "모래", "건조")
    assert rho is not None and rho > 1000
    assert mu.factor("㎥", "톤", rho) == rho / 1000  # 1 ㎥ = ρ/1000 톤
    assert mu.convert(Decimal(100), "㎥", "톤", rho) == Decimal(100) * 1000 / rho
    assert mu.unit_weight(master, "없는 종별", "건조") is None


def test_result_per_one_parser():
    assert mu.per("원/10㎡") == [(Decimal(10), "㎡")]
    assert mu.per("원/1,000본") == [(Decimal(1000), "본")]
    assert mu.per("원/㎡ · 원/㎥(단위 따름)") == [(Decimal(1), "㎡"), (Decimal(1), "㎥")]
    assert mu.per("㎥/시간") == []
    assert mbs.result_per("원/ton") == [(Decimal(1), "ton")]