"""商家派单金额/押金要求限额 — 读 XcxSysPeizhi，后台可配"""
from decimal import Decimal, InvalidOperation

from utils.xcx_sys_config import wx_cfg

DEFAULT_MIN = Decimal('10')
DEFAULT_MAX = Decimal('10000')
DEFAULT_YAJIN_MIN = Decimal('0.10')
DEFAULT_YAJIN_MAX = Decimal('10000')


def get_shangjia_paifa_jiage_limits():
    """返回 (min, max) Decimal"""
    min_v = getattr(wx_cfg, 'SHANGJIA_PAIFA_JIAGE_MIN', None) or DEFAULT_MIN
    max_v = getattr(wx_cfg, 'SHANGJIA_PAIFA_JIAGE_MAX', None) or DEFAULT_MAX
    min_v = Decimal(str(min_v))
    max_v = Decimal(str(max_v))
    if min_v > max_v:
        min_v, max_v = max_v, min_v
    return min_v, max_v


def get_shangjia_paifa_yajin_limits():
    """返回派单「要求接单员押金」金额 (min, max) Decimal"""
    min_v = getattr(wx_cfg, 'SHANGJIA_PAIFA_YAJIN_MIN', None) or DEFAULT_YAJIN_MIN
    max_v = getattr(wx_cfg, 'SHANGJIA_PAIFA_YAJIN_MAX', None) or DEFAULT_YAJIN_MAX
    min_v = Decimal(str(min_v))
    max_v = Decimal(str(max_v))
    if min_v > max_v:
        min_v, max_v = max_v, min_v
    return min_v, max_v


def validate_shangjia_paifa_jiage(jiage_str):
    """
    校验派单金额
    @return (ok, msg, jiage_float|None)
    """
    if jiage_str is None or str(jiage_str).strip() == '':
        return False, '缺少价格', None
    jiage_raw = str(jiage_str).strip()
    try:
        jiage = Decimal(jiage_raw)
    except (InvalidOperation, ValueError, TypeError):
        return False, '价格格式错误', None
    if '.' in jiage_raw and len(jiage_raw.split('.')[1]) > 2:
        return False, '最多支持两位小数', None

    min_v, max_v = get_shangjia_paifa_jiage_limits()
    if jiage < min_v or jiage > max_v:
        return False, f'价格需在{min_v}-{max_v}元之间', None
    return True, '', float(jiage)


def validate_shangjia_paifa_yajin(yajin_str):
    """
    校验派单押金要求金额
    @return (ok, msg, yajin_decimal|None)
    """
    if yajin_str is None or str(yajin_str).strip() == '':
        return False, '押金金额不能为空', None
    raw = str(yajin_str).strip()
    try:
        amount = Decimal(raw)
    except (InvalidOperation, ValueError, TypeError):
        return False, '押金格式错误', None
    if '.' in raw and len(raw.split('.')[1]) > 2:
        return False, '押金最多支持两位小数', None

    min_v, max_v = get_shangjia_paifa_yajin_limits()
    if amount < min_v or amount > max_v:
        return False, f'押金需在{min_v}-{max_v}元之间', None
    return True, '', amount