# 1 号药城加入购物车。

from __future__ import annotations

import json
import time
from typing import Any

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)

GATEWAY = "https://gateway-b2b.fangkuaiyi.com"
YAOEX_ADD_URL = f"{GATEWAY}/api/cart/add"
# PC 搜索页加车写死的来源码，所有登录账号同一套。
YAOEX_ADD_TYPE = "1"
YAOEX_SOURCE_TYPE = 17052
YAOEX_FROMWHERE_CART = 0


# 按搜索结果的 spu 和仓，把数量加入 1 号药城购物车。缺 spu 或仓当系统失败。
def add_yaoex_cart(auth, offer: CartOffer, qty: int, *, session: requests.Session | None = None) -> AddOutcome:
    ids = _ids(offer)
    if not ids["spuCode"] or ids["supplyId"] in ("", None):
        return AddOutcome(kind=KIND_SYSTEM, reason="缺少 sku")
    common, payload = _form(auth, ids, qty)
    own = session is None
    client = session or requests.Session()
    try:
        response = client.post(
            YAOEX_ADD_URL,
            params=common,
            data=payload,
            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()


# 从报价里取出加车要的 spu 和仓。仓优先 storeId / frontSellerCode，各账号字段名一样。
def _ids(offer: CartOffer) -> dict[str, Any]:
    raw = offer.extra.get("raw") if isinstance(offer.extra.get("raw"), dict) else offer.extra
    if not isinstance(raw, dict):
        raw = {}
    spu = str(raw.get("spuCode") or offer.sku_id or "").strip()
    supply = _supply_id(raw)
    return {"spuCode": spu, "supplyId": supply}


# 仓号收成网关要的值。纯数字就当整数，避免各账号字符串/数字不一致。
def _supply_id(raw: dict[str, Any]):
    value = raw.get("storeId")
    if value in (None, ""):
        value = raw.get("frontSellerCode")
    if value in (None, ""):
        value = raw.get("supplyId")
    if value in (None, ""):
        value = raw.get("sellerCode")
    if value in (None, ""):
        return ""
    text = str(value).strip()
    if text.isdigit():
        return int(text)
    return text


# 拼 1 号药城加车表单：query 和 body 都带登录 token，itemList 是页面同款 JSON。
def _form(auth, ids: dict[str, Any], qty: int) -> tuple[dict[str, Any], dict[str, Any]]:
    common = {
        "traderName": "yaoex_pc",
        "trader": "pc",
        "closesignature": "yes",
        "signature_method": "md5",
        "signature": "****",
        "timestamp": str(int(time.time() * 1000)),
        "token": auth.token,
        "userToken": auth.token,
        "userId": getattr(auth, "user_id", ""),
        "buyerCode": getattr(auth, "buyer_code", ""),
    }
    item: dict[str, Any] = {
        "productNum": int(qty),
        "spuCode": ids["spuCode"],
        "supplyId": ids["supplyId"],
    }
    payload = {
        **common,
        "addType": YAOEX_ADD_TYPE,
        "sourceType": YAOEX_SOURCE_TYPE,
        "fromwhere": YAOEX_FROMWHERE_CART,
        "itemList": json.dumps([item], ensure_ascii=False),
    }
    return common, payload


# 1 号药城加车请求头。来源页是搜索加车页，所有账号同一套。
def _headers() -> dict[str, str]:
    return {
        "Content-Type": "application/x-www-form-urlencoded",
        "X-Requested-With": "XMLHttpRequest",
        "X-Request-Agent": "Axios",
        "traderName": "yaoex_pc",
        "trader": "pc",
        "Origin": "https://mall.yaoex.com",
        "Referer": "https://mall.yaoex.com/v2/pages/",
        "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"
        ),
        "Accept": "application/json, text/plain, */*",
    }


# 把加车回包收成成功、业务失败或系统失败。看不懂的回包当系统失败。
def _outcome_from_json(payload: object) -> AddOutcome:
    if not isinstance(payload, dict):
        return AddOutcome(kind=KIND_SYSTEM, reason="加购返回异常")
    if payload.get("success") is True or payload.get("code") in (0, "0", 200, "200"):
        return AddOutcome(kind=KIND_OK)
    rtn = payload.get("rtn_code")
    if rtn not in (None, 0, "0"):
        msg = str(payload.get("rtn_msg") or payload.get("rtn_tip") or "加购失败")
        if "登录" in msg:
            return AddOutcome(kind=KIND_SYSTEM, reason=msg)
        return classify_mall_message(msg)
    data = payload.get("data")
    if not isinstance(data, dict):
        data = payload
    blob = _result_text(payload, data)
    status = data.get("statusCode")
    if status in (0, "0") and not blob:
        return AddOutcome(kind=KIND_OK)
    if blob:
        return classify_mall_message(blob)
    if status in (0, "0"):
        return AddOutcome(kind=KIND_OK)
    if status in (2, "2"):
        return AddOutcome(kind=KIND_BUSINESS, reason="限购")
    return AddOutcome(kind=KIND_SYSTEM, reason="加购失败")


# 从 data.message 和 cartResponseList[].message 拼出商城回文。
def _result_text(payload: dict, data: dict) -> str:
    parts: list[str] = []
    for row in data.get("cartResponseList") or data.get("addCartItemList") or []:
        if isinstance(row, dict) and row.get("message"):
            parts.append(str(row["message"]))
    for key in ("message", "msg", "errorMsg"):
        value = data.get(key) or payload.get(key)
        if value:
            parts.append(str(value))
    return " ".join(parts).strip()