from __future__ import annotations

from typing import Any

from src.services.payment.gateway.base import PaymentGateway


class WeChatGateway(PaymentGateway):
    payment_method = "wechat"
    display_name = "微信支付"

    def create_checkout_payload(self, *, order: Any) -> dict[str, Any]:
        gateway_order_id = getattr(order, "gateway_order_id", None) or f"wx_{order.order_no}"
        return {
            "gateway": self.payment_method,
            "display_name": self.display_name,
            "gateway_order_id": gateway_order_id,
            "payment_url": f"/pay/mock/wechat/{order.order_no}",
            "qr_code": f"mock://wechat/{order.order_no}",
            "expires_at": getattr(order, "expires_at", None),
        }