's'

app/page.tsx

@@ -13,7 +13,8 @@ import { usePayStatusPoll } from "@/app/lib/usePayStatusPoll";
 const PB_URL =
   process.env.NEXT_PUBLIC_POCKETBASE_URL || "https://pocketbase.hackrobot.cn";
 
-function redirectToPay(params: {
+/** PC/H5：form POST 到 /api/pay，有中转页，默认 zpay */
+function redirectToPayZpay(params: {
   user_id: string;
   return_url: string;
   total_fee: number;
@@ -33,6 +34,7 @@ function redirectToPay(params: {
     ["type", params.type],
     ["channel", params.channel],
     ["device", params.device],
+    ["provider", "zpay"],
     ["html", "1"],
   ];
   fields.forEach(([k, v]) => {
@@ -46,6 +48,47 @@ function redirectToPay(params: {
   form.submit();
 }
 
+/** 微信内：fetch 获取 xorpay 参数，直接提交表单到收银台，无中转页 */
+async function payWechatXorpay(params: {
+  user_id: string;
+  return_url: string;
+  total_fee: number;
+  type: string;
+  channel: "alipay" | "wxpay";
+}) {
+  const res = await fetch("/api/pay", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      ...params,
+      total_fee: params.total_fee,
+      device: "wechat",
+      provider: "xorpay",
+      html: "0",
+    }),
+  });
+  const data = await res.json().catch(() => ({}));
+  if (!data?.ok || !data?.params || !data?.payUrl) {
+    alert(data?.error || "支付发起失败");
+    return;
+  }
+  const form = document.createElement("form");
+  form.method = "POST";
+  form.action = data.payUrl;
+  form.target = "_self";
+  form.style.display = "none";
+  for (const [k, v] of Object.entries(data.params as Record<string, string>)) {
+    if (v == null) continue;
+    const input = document.createElement("input");
+    input.type = "hidden";
+    input.name = k;
+    input.value = String(v);
+    form.appendChild(input);
+  }
+  document.body.appendChild(form);
+  form.submit();
+}
+
 function getStorage(key: string): string | null {
   if (typeof window === "undefined") return null;
   return localStorage.getItem(key);
@@ -162,14 +205,12 @@ export default function Home() {
     const env = getPayEnv();
     const device = getDeviceFromEnv(env);
     const totalFee = getPaymentConfig().defaultAmount ?? 880;
-    redirectToPay({
-      user_id: userId,
-      return_url: returnUrl,
-      total_fee: totalFee,
-      type: "vip",
-      channel: "wxpay",
-      device,
-    });
+    const base = { user_id: userId, return_url: returnUrl, total_fee: totalFee, type: "vip", channel: "wxpay" as const };
+    if (device === "wechat") {
+      payWechatXorpay(base);
+    } else {
+      redirectToPayZpay({ ...base, device });
+    }
   }, [getOrCreateUserId]);
 
   const handleCopyUsername = useCallback(() => {