feat: Restore OAuth parameter preservation during authentication flow

src/app/(oauth)/oauth/authorize/page.tsx

@@ -4,6 +4,7 @@ import { getClientByClientId } from "@/lib/dto/client";
 import { getCurrentUser } from "@/lib/session";
 import { Authorizing } from "@/components/auth/authorizing";
 import { ErrorCard } from "@/components/auth/error-card";
+import { SaveOAuthParams } from "@/components/auth/save-oauth-params";
 
 export interface AuthorizeParams {
   scope?: string;
@@ -21,7 +22,9 @@ export default async function OAuthAuthorization({
   // 检查用户是否已登录
   const user = await getCurrentUser();
   if (!user?.id) {
-    redirect("/sign-in");
+    return (
+      <SaveOAuthParams searchParams={searchParams} redirectTo="/sign-in" />
+    );
   }
 
   // 验证必要的参数

src/app/authorize/page.tsx

@@ -0,0 +1,38 @@
+"use client";
+
+import { useEffect } from "react";
+import { useRouter } from "next/navigation";
+
+export default function AuthorizePage() {
+  const router = useRouter();
+
+  useEffect(() => {
+    // 检查是否有待处理的 OAuth 请求
+    const pendingOAuth = localStorage.getItem("oauth_pending");
+    if (pendingOAuth) {
+      try {
+        const params = JSON.parse(pendingOAuth);
+        // 清除存储的 OAuth 参数
+        localStorage.removeItem("oauth_pending");
+        // 重定向到 OAuth 授权页面
+        const searchParams = new URLSearchParams(params);
+        router.push(`/oauth/authorize?${searchParams.toString()}`);
+      } catch (error) {
+        console.error("Failed to process OAuth params:", error);
+        router.push("/dashboard");
+      }
+    } else {
+      // 如果没有待处理的 OAuth 请求，直接进入仪表板
+      router.push("/dashboard");
+    }
+  }, [router]);
+
+  return (
+    <div className="flex min-h-screen items-center justify-center">
+      <div className="text-center">
+        <div className="mb-4 h-8 w-8 animate-spin rounded-full border-4 border-primary border-t-transparent"></div>
+        <p className="text-sm text-muted-foreground">正在处理...</p>
+      </div>
+    </div>
+  );
+}

src/components/auth/save-oauth-params.tsx

@@ -0,0 +1,21 @@
+"use client";
+
+import { useEffect } from "react";
+import { redirect } from "next/navigation";
+
+import { AuthorizeParams } from "@/app/(oauth)/oauth/authorize/page";
+
+export function SaveOAuthParams({
+  searchParams,
+  redirectTo,
+}: {
+  searchParams: AuthorizeParams;
+  redirectTo: string;
+}) {
+  useEffect(() => {
+    localStorage.setItem("oauth_pending", JSON.stringify(searchParams));
+    window.location.href = redirectTo;
+  }, [searchParams, redirectTo]);
+
+  return null;
+}

src/components/auth/user-auth-form.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import * as React from "react";
-import { useRouter, useSearchParams } from "next/navigation";
+import { useRouter } from "next/navigation";
 import { Loader2, MessageCircleCode } from "lucide-react";
 
 import { cn } from "@/lib/utils";
@@ -19,39 +19,15 @@ export function UserAuthForm({
   const [isLoading, setIsLoading] = React.useState<boolean>(false);
   const router = useRouter();
   const { toast } = useToast();
-  const searchParams = useSearchParams();
 
   const signIn = () => {
     React.startTransition(async () => {
       try {
-        const body: Record<string, any> = {};
-
-        // 如果存在 OAuth 参数，添加到请求体
-        if (searchParams?.has("client_id")) {
-          const oauthParams = new URLSearchParams();
-          [
-            "client_id",
-            "redirect_uri",
-            "response_type",
-            "state",
-            "scope",
-          ].forEach((param) => {
-            const value = searchParams.get(param);
-            if (value) {
-              oauthParams.append(param, value);
-            }
-          });
-          if (oauthParams.toString()) {
-            body.oauth_params = oauthParams.toString();
-          }
-        }
-
         const response = await fetch("/api/auth/q58", {
           method: "POST",
           headers: {
             "Content-Type": "application/json",
           },
-          body: JSON.stringify(body),
         });
 
         if (!response.ok || response.status !== 200) {