'c1'

app/payment/factory.py

@@ -49,3 +49,31 @@ def reset_provider():
     """重置 Provider（用于测试或切换渠道）"""
     global _provider_instance
     _provider_instance = None
+
+
+def resolve_provider(
+    device: str | None = None,
+    req_provider: str | None = None,
+    user_agent: str | None = None,
+) -> PaymentProvider:
+    """
+    根据设备解析支付渠道：
+    - 微信内(device=wechat 或 UA 含 MicroMessenger) → xorpay
+    - PC/手机浏览器 → zpay
+    显式传入的 provider 优先。
+    """
+    req = (req_provider or "").strip().lower()
+    if req in ("xorpay", "zpay"):
+        return get_payment_provider_by_name(req)
+    dev = (device or "pc").lower()
+    if dev == "wechat":
+        return get_payment_provider_by_name("xorpay")
+    ua = (user_agent or "").lower()
+    if "micromessenger" in ua:
+        return get_payment_provider_by_name("xorpay")
+    return get_payment_provider_by_name("zpay")
+
+
+def resolve_channel(item_channel: str | None) -> str:
+    """支付方式固定为微信支付，支付宝暂不提供"""
+    return "wxpay"