"""解析 1 号药城「订单明细」xls。"""
from __future__ import annotations

from decimal import Decimal
from pathlib import Path

import xlrd

from settle import MallLine

_REQUIRED = {
    "订单号": "order_no",
    "父订单号": "parent_order_no",
    "商家": "supplier_name",
    "订单状态": "status",
    "品名": "goods_name",
    "产品编码": "product_code",
    "产品条码": "bar_code",
    "单价（元）": "unit_price",
    "数量": "qty",
    "商品金额（元）": "goods_amount",
    "折后单价": "pay_price",
    "订单实付总金额": "order_paid",
}


def parse_order_xls(path: str | Path) -> list[MallLine]:
    book = xlrd.open_workbook(str(path))
    sheet = book.sheet_by_index(0)
    headers = [str(sheet.cell_value(0, col)).strip() for col in range(sheet.ncols)]
    missing = [name for name in _REQUIRED if name not in headers]
    if missing:
        raise ValueError("导出表缺列：" + "、".join(missing))
    index = {field: headers.index(name) for name, field in _REQUIRED.items()}
    lines: list[MallLine] = []
    for row in range(1, sheet.nrows):
        values = {field: sheet.cell_value(row, col) for field, col in index.items()}
        order_no = _text(values["order_no"])
        if not order_no:
            continue
        lines.append(
            MallLine(
                order_no=order_no,
                parent_order_no=_text(values["parent_order_no"]),
                supplier_name=_text(values["supplier_name"]),
                status=_text(values["status"]),
                goods_name=_text(values["goods_name"]),
                product_code=_text(values["product_code"]),
                bar_code=_barcode(values["bar_code"]),
                unit_price=_decimal(values["unit_price"]),
                pay_price=_decimal(values["pay_price"]),
                qty=int(_decimal(values["qty"])),
                goods_amount=_decimal(values["goods_amount"]),
                order_paid=_decimal(values["order_paid"]),
            )
        )
    return lines


def _text(value: object) -> str:
    if value is None:
        return ""
    if isinstance(value, float) and value == int(value):
        return str(int(value))
    return str(value).strip()


def _barcode(value: object) -> str:
    text = _text(value)
    if "," in text:
        parts = [part.strip() for part in text.split(",") if part.strip()]
        text = parts[0] if parts else ""
    if text.endswith(".0") and text.replace(".", "", 1).isdigit():
        return text[:-2]
    return text


def _decimal(value: object) -> Decimal:
    if value is None or value == "":
        return Decimal("0")
    return Decimal(str(value))