"""药帮忙加入购物车。"""
from __future__ import annotations

import requests
import urllib3

from cart_add import KIND_OK, KIND_SYSTEM, AddOutcome, classify_mall_message
from cart_match import CartOffer

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

YBM_ADD_URL = "https://www.ybm100.com/new-front/cart/add-product"


def add_ybm_cart(
    cookies: dict[str, str],
    offer: CartOffer,
    qty: int,
    *,
    session: requests.Session | None = None,
) -> AddOutcome:
    sku = _sku_id(offer)
    if not sku:
        return AddOutcome(kind=KIND_SYSTEM, reason="缺少 sku")
    own = session is None
    client = session or requests.Session()
    try:
        if own:
            for name, value in cookies.items():
                client.cookies.set(name, value)
        response = client.post(
            YBM_ADD_URL,
            json={"skuId": sku, "skuNum": int(qty)},
            headers=_headers(),
            timeout=30,
            verify=False,
        )
        response.raise_for_status()
        return _outcome_from_json(response.json())
    except Exception as exc:
        return AddOutcome(kind=KIND_SYSTEM, reason=str(exc))
    finally:
        if own:
            client.close()


def _sku_id(offer: CartOffer) -> str:
    raw = offer.extra.get("raw") if isinstance(offer.extra.get("raw"), dict) else offer.extra
    if not isinstance(raw, dict):
        raw = {}
    return str(raw.get("skuId") or offer.sku_id or "")


def _headers() -> dict[str, str]:
    return {
        "Accept": "application/json, text/plain, */*",
        "Content-Type": "application/json",
        "Origin": "https://www.ybm100.com",
        "Referer": "https://www.ybm100.com/new/",
        "X-Requested-With": "XMLHttpRequest",
        "User-Agent": (
            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
            "(KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36"
        ),
    }


def _outcome_from_json(payload: object) -> AddOutcome:
    if not isinstance(payload, dict):
        return AddOutcome(kind=KIND_SYSTEM, reason="加购返回异常")
    msg = str(payload.get("msg") or payload.get("message") or "")
    success = payload.get("success")
    code = payload.get("code")
    if success is True or code in (0, "0", 200, "200"):
        return AddOutcome(kind=KIND_OK)
    if msg:
        return classify_mall_message(msg)
    return AddOutcome(kind=KIND_SYSTEM, reason="加购失败")