result = {'widgettype': 'Message', 'options': {'title': 'Error', 'message': 'Invalid', 'type': 'error', 'timeout': 3}}

try:
    user_orgid = (await get_userorgid()) or '0'
    customerid = params_kw.get('customerid')

    if not customerid:
        result = {'widgettype': 'Error', 'options': {'title': '参数错误', 'message': '请选择客户后再创建折扣方案', 'timeout': 5}}
        return result

    dbname = get_module_dbname('discount')
    data = dict(params_kw)
    discountid = getID()
    data['id'] = discountid
    data['resellerid'] = user_orgid
    data['customerid'] = customerid

    async with DBPools().sqlorContext(dbname) as sor:
        # Find default discount plan (all users)
        default_sql = """
        SELECT id FROM discount 
        WHERE resellerid = ${resellerid}$ AND customerid IS NULL
        ORDER BY enabled_date DESC LIMIT 1
        """
        default_recs = await sor.sqlExe(default_sql, {'resellerid': user_orgid})

        if not default_recs:
            result = {'widgettype': 'Error', 'options': {'title': '创建失败', 'message': '系统中没有全部用户的默认折扣方案，请先创建默认方案', 'timeout': 5}}
            return result

        await sor.C('discount', data)

        # Copy default discount details to this customer's plan
        default_discountid = default_recs[0].id
        detail_sql = "SELECT * FROM discount_detail WHERE discountid = ${did}$"
        details = await sor.sqlExe(detail_sql, {'did': default_discountid})

        for d in details or []:
            await sor.C('discount_detail', {
                'id': getID(),
                'discountid': discountid,
                'resellerid': user_orgid,
                'prodtypeid': d.prodtypeid,
                'productid': d.productid,
                'discount': d.discount,
            })

    result = {'widgettype': 'Message', 'options': {'title': 'Success', 'message': '折扣方案创建成功，已复制默认产品折扣', 'type': 'success', 'timeout': 3}}

except Exception as e:
    debug(f'discount_create error: {format_exc()}')
    result['options'] = {'title': 'Error', 'message': f'创建失败: {str(e)}', 'type': 'error', 'timeout': 5}

return result