"""Выгрузка таблиц в .xlsx (D13): значения, не текст."""

from __future__ import annotations

import io
from dataclasses import dataclass
from datetime import date, datetime, timezone
from decimal import Decimal

from openpyxl import load_workbook

from app.exports.xlsx import table_xlsx


@dataclass(frozen=True)
class _Row:
    name: str
    quantity: Decimal
    on_date: date
    updated_at: datetime
    comment: str | None


_COLUMNS = {
    "name": "Бумага",
    "quantity": "Остаток, шт",
    "on_date": "Дата",
    "updated_at": "Когда",
}


def _sheet(data: bytes):
    return load_workbook(io.BytesIO(data)).active


def test_header_and_values() -> None:
    rows = [
        _Row(
            "РЭО-02",
            Decimal("1834360.000000"),
            date(2026, 3, 30),
            datetime(2026, 10, 26, 6, 30, tzinfo=timezone.utc),
            "не выгружается",
        ),
        _Row(
            "ЕврХол3P06", Decimal("-5"), date(2026, 3, 31), datetime(2026, 1, 1), None
        ),
    ]

    ws = _sheet(table_xlsx(rows, _COLUMNS, "Остатки"))

    assert ws.title == "Остатки"
    assert ws.freeze_panes == "A2"
    assert [c.value for c in ws[1]] == list(_COLUMNS.values())
    assert all(c.font.bold for c in ws[1])
    first = [c.value for c in ws[2]]
    assert first[:3] == ["РЭО-02", 1834360, datetime(2026, 3, 30)]
    assert first[3] == datetime(2026, 10, 26, 9, 30)  # московское время
    assert ws["C2"].number_format == "DD.MM.YYYY"
    assert ws["D2"].number_format == "DD.MM.YYYY HH:MM:SS"
    assert ws["B3"].value == -5
    assert ws["D3"].value == datetime(2026, 1, 1)  # без пояса — как есть
    assert ws.max_column == 4


def test_fractional_decimal_and_dicts() -> None:
    ws = _sheet(
        table_xlsx(
            [{"rate": Decimal("18.500000"), "extra": "x"}, {"rate": None}],
            {"rate": "Ставка"},
            "Очень длинное название листа для Excel",
        )
    )

    assert ws.title == "Очень длинное название листа дл"
    assert ws["A2"].value == 18.5
    assert ws["A3"].value is None


def test_empty_table_has_header_only() -> None:
    ws = _sheet(table_xlsx([], {"name": "Бумага"}, "Пусто"))

    assert ws.max_row == 1
    assert ws["A1"].value == "Бумага"