"""Строки ИНН рядом с контрагентом (spec «Строки ИНН рядом с контрагентом», change `osv-inn-rows-layouts`, #35).

Тесты модуля `inn_rows` на деревьях, собранных вручную: строка листа — (уровень, подпись, шесть сумм, ИНН колонки).
Подпись — колонка 1, колонка ИНН — 2, суммы — 3…8; уровни — как у стратегии outline, родители — `hierarchy.parents`.
"""

from decimal import Decimal

import pytest
from gridbuilder import sheet_from_rows

from src.contract.result import OsvGroup
from src.parser.classify import ACCOUNT_RE
from src.parser.header import InnHint
from src.parser.hierarchy import BodyRow, Levels, parents
from src.parser.inn_rows import InnGlue, glue_inn_rows
from src.parser.rules import Rules, load_rules

Sums = tuple[object, object, object, object, object, object]
NO: Sums = (None, None, None, None, None, None)
A: Sums = (None, None, 100, 40, 60, None)
B: Sums = (10, None, None, 30, None, 20)
INN_A = "7701234560"
INN_B = "7707654321"
INN_12 = "500100732259"
BAD = "7701234567"  # контрольная сумма не сходится
LABEL_COL = 1
INN_COL = 2
SCHEMA = [OsvGroup(type="ACCOUNT", name="Счет"), OsvGroup(type="COUNTERPARTY", name="Контрагенты")]
SCHEMA_WITH_CONTRACTS = [*SCHEMA, OsvGroup(type="CONTRACT", name="Договоры")]
BELOW = InnHint("Контрагенты.ИНН", "below")
ABOVE = InnHint("Контрагенты.ИНН", "above")

Row = tuple[int, object, Sums, object]


@pytest.fixture(scope="module")
def rules() -> Rules:
    return load_rules()


def r(level: int, label: object, sums: Sums = NO, inn: object = None) -> Row:
    return level, label, sums, inn


def run(rules: Rules, *rows: Row, hint: InnHint | None = None, schema: list[OsvGroup] | None = None) -> InnGlue:
    sheet = sheet_from_rows([[label, inn, *sums] for _, label, sums, inn in rows])
    body: list[BodyRow] = []
    for number, (level, _, sums, _) in enumerate(rows, start=1):
        text = sheet.text_at(number, LABEL_COL)
        account = ACCOUNT_RE.match(text)
        body.append(
            BodyRow(
                row=number,
                text=text,
                is_account=account is not None,
                account_rank=None if account is None else account.group(1).count(".") + 1,
                bold=False,
                indent=0,
                outline=level,
                sums=tuple(None if value is None else Decimal(str(value)) for value in sums),
                label_col=LABEL_COL,
            )
        )
    by_row = {item.row: level for item, (level, *_) in zip(body, rows, strict=True)}
    levels = Levels(by_row=by_row, parent=parents(body, by_row), strategy="outline")
    return glue_inn_rows(body, levels, None, sheet, inn_col=INN_COL, schema=schema or SCHEMA, hint=hint, rules=rules)


def texts(glue: InnGlue) -> list[str]:
    return [item.text for item in glue.rows]


def has_warning(glue: InnGlue, *parts: str) -> bool:
    return any(all(part in warning for part in parts) for warning in glue.warnings)


# --- ИНН под наименованием, в дереве ---


def test_inn_below_in_tree_with_sums_is_glued(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, INN_A, A))

    assert texts(glue) == ["60", "ООО Альфа"]
    assert glue.inns == {2: INN_A}
    assert (glue.unpaired, glue.ok) == (frozenset(), True)
    assert has_warning(glue, "строка 3", INN_A, "отнесён к контрагенту в строке 2")


def test_inn_below_in_tree_without_sums_is_glued(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, INN_12))

    assert glue.inns == {2: INN_12}
    assert glue.ok


def test_children_of_inn_row_move_up_to_counterparty(rules: Rules) -> None:
    glue = run(
        rules,
        r(0, "60", A),
        r(1, "ООО Альфа", A),
        r(2, INN_A, A),
        r(3, "Договор № 1", A),
        schema=SCHEMA_WITH_CONTRACTS,
    )

    assert texts(glue) == ["60", "ООО Альфа", "Договор № 1"]
    assert (glue.levels.by_row[4], glue.levels.parent[4]) == (2, 2)


def test_inn_with_contracts_under_counterparty_belongs_to_parent(rules: Rules) -> None:
    # Без подсказки: родитель по схеме — контрагент, значит ИНН его, а дети строки ИНН — договоры
    glue = run(
        rules,
        r(0, "60", A),
        r(1, "ООО Альфа", A),
        r(2, INN_A, A),
        r(3, "Договор № 1", A),
        schema=SCHEMA_WITH_CONTRACTS,
    )

    assert glue.inns == {2: INN_A}
    assert texts(glue) == ["60", "ООО Альфа", "Договор № 1"]


def test_inn_between_department_and_name_is_above(rules: Rules) -> None:
    # Родитель по схеме — подразделение: строка ИНН стоит над наименованием
    schema = [
        OsvGroup(type="ACCOUNT", name="Счет"),
        OsvGroup(type="DEPARTMENT", name="Подразделения"),
        OsvGroup(type="COUNTERPARTY", name="Контрагенты"),
    ]
    glue = run(rules, r(0, "60", A), r(1, "БП Аренда", A), r(2, INN_A, A), r(3, "ООО Альфа", A), schema=schema)

    assert glue.inns == {4: INN_A}
    assert (glue.levels.by_row[4], glue.levels.parent[4]) == (2, 2)


def test_two_inn_rows_under_one_name_stay_unpaired(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, INN_A), r(2, INN_B))

    assert glue.unpaired == frozenset({3, 4})
    assert not glue.ok
    assert has_warning(glue, "строка 3", "несколько строк ИНН")


def test_inn_row_with_other_sums_stays_unpaired(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, INN_A, B))

    assert glue.unpaired == frozenset({3})
    assert glue.inns == {}
    assert has_warning(glue, "строка 3", "суммы не равны")


# --- ИНН над наименованием, в дереве ---


def test_inn_above_in_tree_with_sums_is_glued_and_name_moves_up(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, INN_A, A), r(2, "ООО Альфа", A))

    assert texts(glue) == ["60", "ООО Альфа"]
    assert glue.inns == {3: INN_A}
    assert (glue.levels.by_row[3], glue.levels.parent[3]) == (1, 1)


def test_inn_above_in_tree_without_sums_is_glued(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, INN_A), r(2, "ООО Альфа", A))

    assert glue.inns == {3: INN_A}
    assert glue.ok


def test_inn_above_with_two_children_stays_unpaired(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, INN_A), r(2, "ООО Альфа", A), r(2, "ООО Бета", B))

    assert glue.unpaired == frozenset({2})
    assert texts(glue) == ["60", INN_A, "ООО Альфа", "ООО Бета"]
    assert has_warning(glue, "строка 2", "несколько")


def test_no_extra_level_keeps_inn_named_counterparty(rules: Rules) -> None:
    # Схема «Контрагенты, Договоры», глубже схемы строк нет: «7701234560» — контрагент с одним договором, не строка ИНН
    glue = run(rules, r(0, "60", A), r(1, INN_A, A), r(2, "Договор № 1", A), schema=SCHEMA_WITH_CONTRACTS)

    assert texts(glue) == ["60", INN_A, "Договор № 1"]
    assert (glue.inns, glue.unpaired, glue.warnings, glue.ok) == ({}, frozenset(), [], True)


def test_extra_level_allows_inn_above_with_contract_schema(rules: Rules) -> None:
    glue = run(
        rules,
        r(0, "60", A),
        r(1, INN_A, A),
        r(2, "ООО Альфа", A),
        r(3, "Договор № 1", A),
        schema=SCHEMA_WITH_CONTRACTS,
    )

    assert glue.inns == {3: INN_A}
    assert (glue.levels.by_row[4], glue.levels.parent[4]) == (2, 3)


# --- Распознавание и контрольная сумма ---


@pytest.mark.parametrize(
    ("label", "inn"),
    [
        (Decimal(7701234560), INN_A),
        (123456788, "0123456788"),  # 9 цифр числом (#34)
        ("ИНН 7701234560", INN_A),
        ("ИНН: 7701234560 / 770101001", INN_A),
        (INN_12, INN_12),
    ],
)
def test_inn_row_forms(rules: Rules, label: object, inn: str) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, label, A))

    assert glue.inns == {2: inn}


def test_number_with_lost_leading_zero_is_restored(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Адыгея", A), r(2, 105012345, A), hint=BELOW)

    assert glue.inns == {2: "0105012345"}


def test_bad_checksum_without_hint_is_lookalike(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, BAD, A))

    assert texts(glue) == ["60", "ООО Альфа", BAD]
    assert (glue.inns, glue.unpaired, glue.ok) == ({}, frozenset(), False)
    assert has_warning(glue, "строка 3", "похожа на ИНН", "контрольная сумма не сходится")


def test_lone_number_named_row_without_names_around_is_silent(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, BAD, A))

    assert (glue.warnings, glue.ok) == ([], True)


def test_hint_skips_checksum(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A), r(2, BAD, A), hint=BELOW)

    assert glue.inns == {2: BAD}
    assert has_warning(glue, f"ИНН {BAD} («Контрагенты.ИНН») отнесён к контрагенту в строке 2")


def test_hint_below_empty_label_is_glued_without_inn(rules: Rules) -> None:
    # R-1 #32: физлицо — 1С выводит строку реквизита с пустой ячейкой
    glue = run(rules, r(0, "60", A), r(1, "Иванов Иван", A), r(2, None, A), hint=BELOW)

    assert texts(glue) == ["60", "Иванов Иван"]
    assert (glue.inns, glue.ok) == ({}, True)
    assert has_warning(
        glue, "строка 3: ИНН пуст («Контрагенты.ИНН») — строка отнесена к контрагенту в строке 2 без ИНН"
    )


def test_hint_below_unrecognised_attribute_stays_unpaired(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Нерезидент", A), r(2, "нерез.", A), hint=BELOW)

    assert glue.unpaired == frozenset({3})
    assert not glue.ok
    assert has_warning(glue, "строка 3", "не распознан")


def test_hint_below_real_name_with_own_inn_row_is_not_an_attribute(rules: Rules) -> None:
    # R-1 T2.1: единственный ребёнок подразделения с теми же суммами — наименование, у него своя строка ИНН
    schema = [
        OsvGroup(type="ACCOUNT", name="Счет"),
        OsvGroup(type="DEPARTMENT", name="Подразделения"),
        OsvGroup(type="COUNTERPARTY", name="Контрагенты"),
    ]
    glue = run(
        rules, r(0, "60", A), r(1, "БП Аренда", A), r(2, "ООО Альфа", A), r(3, INN_A, A), hint=BELOW, schema=schema
    )

    assert texts(glue) == ["60", "БП Аренда", "ООО Альфа"]
    assert (glue.inns, glue.unpaired, glue.ok) == ({3: INN_A}, frozenset(), True)


def test_childless_inn_next_to_counterparty_under_department_is_not_paired_with_department(rules: Rules) -> None:
    # R-2 T2.2: родитель-подразделение — не пара; строка ИНН идёт в соседи (направление без подсказки не определено)
    schema = [
        OsvGroup(type="ACCOUNT", name="Счет"),
        OsvGroup(type="DEPARTMENT", name="Подразделения"),
        OsvGroup(type="COUNTERPARTY", name="Контрагенты"),
    ]
    glue = run(rules, r(0, "60", A), r(1, "БП Аренда", A), r(2, INN_A), r(2, "ООО Альфа", A), schema=schema)

    assert glue.inns == {}
    assert glue.unpaired == frozenset({3})
    assert has_warning(glue, "строка 3", "направление")


def test_hint_above_disables_no_extra_level_guard(rules: Rules) -> None:
    # R-3 T2.3: подсказка «над» — свидетельство лишнего уровня; защита работает только без подсказки
    glue = run(rules, r(0, "60", A), r(1, INN_A, A), r(2, "ООО Альфа", A), hint=ABOVE, schema=SCHEMA_WITH_CONTRACTS)

    assert texts(glue) == ["60", "ООО Альфа"]
    assert (glue.inns, glue.unpaired) == ({3: INN_A}, frozenset())


def test_column_inn_wins_over_inn_row(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A, inn=INN_B), r(2, INN_A, A))

    assert texts(glue) == ["60", "ООО Альфа"]
    assert glue.inns == {}
    assert not glue.ok
    assert has_warning(glue, "строка 3", "расходится", INN_B)


def test_same_inn_in_column_and_row_is_fine(rules: Rules) -> None:
    glue = run(rules, r(0, "60", A), r(1, "ООО Альфа", A, inn=INN_A), r(2, INN_A, A))

    assert (glue.inns, glue.ok) == ({2: INN_A}, True)