功能: 增加鱼翅直充接口基础层

2026-08-13 16:44:20 +08:00
parent 2e207f726c
commit 420ee3d95c
6 changed files with 328 additions and 0 deletions
@@ -6,6 +6,7 @@ from .login_api_wgapi import WgapiLoginAPI
 from .login_api_iframe import IframeLoginAPI
 from .email_verifier import EmailVerifier
 from .activity_client import DouyuActivityClient, DouyuActivityError
+from .recharge_api import FishFinRechargeClient, FishFinRechargeConfig, FishFinRechargeError

 __all__ = [
    "DouyuLogin",
@@ -16,4 +17,7 @@ __all__ = [
    "EmailVerifier",
    "DouyuActivityClient",
    "DouyuActivityError",
+    "FishFinRechargeClient",
+    "FishFinRechargeConfig",
+    "FishFinRechargeError",
 ]
@@ -0,0 +1,189 @@
+"""鱼翅直充供应商 API 客户端。"""
+
+from __future__ import annotations
+
+import hashlib
+import json
+import os
+import time
+from dataclasses import dataclass
+from decimal import Decimal, InvalidOperation
+from typing import Any, Mapping
+
+import requests
+
+
+class FishFinRechargeError(RuntimeError):
+    """鱼翅直充供应商接口调用失败。"""
+
+
+class FishFinRechargeConfigError(FishFinRechargeError):
+    """鱼翅直充供应商配置不完整。"""
+
+
+@dataclass(frozen=True)
+class FishFinRechargeConfig:
+    """供应商接入配置；敏感值仅从运行环境读取。"""
+
+    base_url: str
+    app_id: str
+    app_secret: str
+    app_key: str = ""
+    timeout: tuple[float, float] = (8, 20)
+
+    @classmethod
+    def from_env(cls) -> "FishFinRechargeConfig":
+        """从环境变量读取配置，不在代码或数据库中保存商户密钥。"""
+        timeout = float(os.getenv("FISH_FIN_RECHARGE_TIMEOUT", "20"))
+        return cls(
+            base_url=os.getenv("FISH_FIN_RECHARGE_BASE_URL", "").strip(),
+            app_id=os.getenv("FISH_FIN_RECHARGE_APP_ID", "").strip(),
+            app_secret=os.getenv("FISH_FIN_RECHARGE_APP_SECRET", "").strip(),
+            app_key=os.getenv("FISH_FIN_RECHARGE_APP_KEY", "").strip(),
+            timeout=(8, timeout),
+        )
+
+    def validate(self) -> None:
+        """在实际发起请求前校验必要配置。"""
+        missing = [
+            name
+            for name, value in (
+                ("FISH_FIN_RECHARGE_BASE_URL", self.base_url),
+                ("FISH_FIN_RECHARGE_APP_ID", self.app_id),
+                ("FISH_FIN_RECHARGE_APP_SECRET", self.app_secret),
+            )
+            if not value
+        ]
+        if missing:
+            raise FishFinRechargeConfigError(f"缺少鱼翅直充配置: {', '.join(missing)}")
+
+
+class FishFinRechargeClient:
+    """实现供应商 createOrderV2、queryOrderV2 与 userInfoV2 协议。"""
+
+    CREATE_ORDER_PATH = "/adapter-apiaccess/open/api/createOrderV2"
+    QUERY_ORDER_PATH = "/adapter-apiaccess/open/api/queryOrderV2"
+    USER_INFO_PATH = "/adapter-apiaccess/open/api/userInfoV2"
+
+    def __init__(self, config: FishFinRechargeConfig, *, session: requests.Session | None = None):
+        config.validate()
+        self.config = config
+        self.session = session or requests.Session()
+        self.session.trust_env = False
+
+    @staticmethod
+    def _sign_value(value: Any) -> str:
+        """将参数转为待签名文本；对象按稳定紧凑 JSON 表示。"""
+        if isinstance(value, (dict, list, tuple)):
+            return json.dumps(value, ensure_ascii=False, separators=(",", ":"), sort_keys=True)
+        if isinstance(value, bool):
+            return "true" if value else "false"
+        return str(value)
+
+    @classmethod
+    def normalized_params(cls, params: Mapping[str, Any]) -> dict[str, str]:
+        """按供应商规则去除首尾空白与空值，保留可签名参数。"""
+        normalized: dict[str, str] = {}
+        for raw_key, raw_value in params.items():
+            key = str(raw_key).strip()
+            if not key or key == "sign" or raw_value is None:
+                continue
+            value = cls._sign_value(raw_value).strip()
+            if value:
+                normalized[key] = value
+        return normalized
+
+    def sign(self, params: Mapping[str, Any], method: str) -> str:
+        """生成小写 MD5 签名。"""
+        normalized = self.normalized_params(params)
+        query = "&".join(f"{key}={normalized[key]}" for key in sorted(normalized))
+        raw = f"{query}{method.upper()}{self.config.app_secret}"
+        return hashlib.md5(raw.encode("utf-8")).hexdigest()
+
+    def verify_response_sign(self, payload: Mapping[str, Any], method: str) -> bool:
+        """校验带 sign 的响应；供应商未返回 sign 时由调用方决定是否接受。"""
+        received = str(payload.get("sign") or "").strip().lower()
+        return bool(received) and received == self.sign(payload, method)
+
+    def _request(self, method: str, path: str, params: Mapping[str, Any] | None = None) -> dict[str, Any]:
+        """补齐公共参数、签名并执行一次 JSON 请求。"""
+        request_params: dict[str, Any] = {
+            "app_id": self.config.app_id,
+            "timestamp": int(time.time()),
+            **(params or {}),
+        }
+        request_params["sign"] = self.sign(request_params, method)
+        url = f"{self.config.base_url.rstrip('/')}{path}"
+        try:
+            if method.upper() == "GET":
+                response = self.session.get(url, params=request_params, timeout=self.config.timeout)
+            else:
+                response = self.session.post(url, json=request_params, timeout=self.config.timeout)
+            response.raise_for_status()
+            payload = response.json()
+        except requests.RequestException as exc:
+            raise FishFinRechargeError(f"供应商请求失败: {exc}") from exc
+        except ValueError as exc:
+            raise FishFinRechargeError("供应商响应不是 JSON") from exc
+        if not isinstance(payload, dict):
+            raise FishFinRechargeError("供应商响应格式无效")
+        return payload
+
+    @staticmethod
+    def _price(value: Decimal | int | float | str) -> str:
+        """规范化金额，避免浮点数表达式进入签名或订单请求。"""
+        try:
+            price = Decimal(str(value))
+        except (InvalidOperation, ValueError) as exc:
+            raise ValueError("customer_price 必须是有效金额") from exc
+        if not price.is_finite() or price <= 0:
+            raise ValueError("customer_price 必须大于 0")
+        return format(price.normalize(), "f")
+
+    def create_order(
+        self,
+        *,
+        charge_account: str,
+        buy_num: int,
+        customer_price: Decimal | int | float | str,
+        customer_order_no: str,
+        product_id: str,
+        recharge_arg: list[dict[str, Any]],
+        notify_url: str = "",
+        ext_arg: dict[str, Any] | None = None,
+    ) -> dict[str, Any]:
+        """创建直充订单；成功后应使用 query_order 或供应商回调确认最终状态。"""
+        if not str(charge_account).strip():
+            raise ValueError("charge_account 不能为空")
+        if not str(customer_order_no).strip():
+            raise ValueError("customer_order_no 不能为空")
+        if not str(product_id).strip():
+            raise ValueError("product_id 不能为空")
+        if not isinstance(buy_num, int) or isinstance(buy_num, bool) or buy_num < 1:
+            raise ValueError("buy_num 必须是不小于 1 的整数")
+        if not isinstance(recharge_arg, list) or not recharge_arg:
+            raise ValueError("recharge_arg 必须是非空数组")
+        return self._request("POST", self.CREATE_ORDER_PATH, {
+            "charge_account": str(charge_account).strip(),
+            "buy_num": buy_num,
+            "customer_price": self._price(customer_price),
+            "customer_order_no": str(customer_order_no).strip(),
+            "product_id": str(product_id).strip(),
+            "recharge_arg": recharge_arg,
+            "notify_url": str(notify_url).strip(),
+            "ext_arg": ext_arg or {},
+        })
+
+    def query_order(self, **query: Any) -> dict[str, Any]:
+        """查询订单。
+
+        文档未列出查询字段，调用方必须显式传入供应商确认的订单标识，例如
+        ``customer_order_no`` 或供应商订单号。
+        """
+        if not query or not any(str(value).strip() for value in query.values() if value is not None):
+            raise ValueError("查询订单至少需要一个非空订单标识")
+        return self._request("GET", self.QUERY_ORDER_PATH, query)
+
+    def account_info(self) -> dict[str, Any]:
+        """查询商户账户信息。"""
+        return self._request("GET", self.USER_INFO_PATH)