refactor: Streamline Discourse OAuth authentication and authorization flow

src/app/(oauth)/q58/callback/page.tsx

@@ -1,10 +1,11 @@
 import { Suspense } from "react";
+import { redirect } from "next/navigation";
 
 import { discourseCallbackVerify } from "@/lib/discourse/verify";
 import { findAuthorization } from "@/lib/dto/authorization";
 import { getClientByClientId } from "@/lib/dto/client";
 import { getAuthorizeUrl } from "@/lib/oauth/authorize-url";
-import { CallbackHandler } from "@/components/auth/callback-handler";
+import { AuthorizationCard } from "@/components/auth/authorization-card";
 
 export interface DiscourseCallbackParams extends Record<string, string> {
   sig: string;
@@ -26,7 +27,7 @@ export default async function DiscourseCallbackPage({
     throw new Error("Client Id invalid (code: -1004).");
   }
 
-  // verify discourse callback
+  // verify discourse callback and create/update user
   const user = await discourseCallbackVerify(
     searchParams.sso,
     searchParams.sig,
@@ -34,23 +35,19 @@ export default async function DiscourseCallbackPage({
 
   // check authorization
   const authorization = await findAuthorization(user.id, client.id);
-  let redirectUrl: string | undefined;
 
   if (authorization) {
-    redirectUrl = await getAuthorizeUrl(oauthParams);
+    // 如果已经授权，直接重定向到应用
+    const redirectUrl = await getAuthorizeUrl(oauthParams);
+    redirect(redirectUrl);
   }
 
+  // 如果未授权，显示授权页面
   return (
     <main className="flex min-h-screen flex-col items-center justify-center">
       <div className="flex items-center justify-center">
         <Suspense>
-          <CallbackHandler
-            client={client}
-            user={user}
-            oauthParams={searchParams.oauth}
-            hasAuthorization={!!authorization}
-            redirectUrl={redirectUrl}
-          />
+          <AuthorizationCard client={client} oauthParams={searchParams.oauth} />
         </Suspense>
       </div>
     </main>

src/auth.config.ts

@@ -9,47 +9,16 @@ export default {
   providers: [
     Credentials({
       credentials: {
-        id: { type: "text" },
-        username: { type: "text" },
-        email: { type: "text" },
-        name: { type: "text" },
-        avatarUrl: { type: "text" },
-        role: { type: "text" },
-        moderator: { type: "text" },
-        groups: { type: "text" },
         sso: { type: "text" },
         sig: { type: "text" },
       },
       async authorize(credentials) {
-        if (!credentials) return null;
+        if (!credentials?.sso || !credentials?.sig) return null;
 
-        // 如果是 SSO 登录
-        if (credentials.sso && credentials.sig) {
-          return await discourseCallbackVerify(
-            credentials.sso as string,
-            credentials.sig as string,
-          );
-        }
-
-        // 如果是直接传入用户数据
-        if (credentials.id && credentials.username && credentials.email) {
-          return {
-            id: credentials.id as string,
-            username: credentials.username as string,
-            email: credentials.email as string,
-            name: (credentials.name as string) || null,
-            avatarUrl: (credentials.avatarUrl as string) || null,
-            role: ((credentials.role as string) || "USER") as UserRole,
-            moderator: credentials.moderator === "true",
-            groups: credentials.groups
-              ? JSON.parse(credentials.groups as string)
-              : [],
-            createdAt: new Date(),
-            updatedAt: new Date(),
-          };
-        }
-
-        return null;
+        return await discourseCallbackVerify(
+          credentials.sso as string,
+          credentials.sig as string,
+        );
       },
     }),
   ],

src/components/auth/callback-handler.tsx

@@ -1,76 +0,0 @@
-"use client";
-
-import { useEffect, useState } from "react";
-import { useRouter } from "next/navigation";
-import { signIn } from "@/auth";
-import { Client } from "@prisma/client";
-
-import { AuthorizationCard } from "./authorization-card";
-
-interface CallbackHandlerProps {
-  client: Client;
-  user: any;
-  oauthParams: string;
-  hasAuthorization: boolean;
-  redirectUrl?: string;
-}
-
-export function CallbackHandler({
-  client,
-  user,
-  oauthParams,
-  hasAuthorization,
-  redirectUrl,
-}: CallbackHandlerProps) {
-  const router = useRouter();
-  const [error, setError] = useState<string | null>(null);
-  const [isProcessing, setIsProcessing] = useState(true);
-
-  useEffect(() => {
-    async function handleAuth() {
-      try {
-        // 设置用户会话
-        await signIn("credentials", {
-          id: user.id,
-          username: user.username,
-          email: user.email,
-          name: user.name,
-          avatarUrl: user.avatarUrl,
-          role: user.role,
-          moderator: user.moderator,
-          groups: JSON.stringify(user.groups),
-          redirect: false,
-        });
-
-        // 如果已经授权过，直接重定向
-        if (hasAuthorization && redirectUrl) {
-          router.push(redirectUrl);
-          return;
-        }
-
-        setIsProcessing(false);
-      } catch (error) {
-        console.error("Auth error:", error);
-        setError("认证过程中发生错误");
-        setIsProcessing(false);
-      }
-    }
-
-    handleAuth();
-  }, []);
-
-  if (error) {
-    return <div className="text-red-500">{error}</div>;
-  }
-
-  if (isProcessing) {
-    return (
-      <div className="flex items-center justify-center">
-        <div className="h-8 w-8 animate-spin rounded-full border-4 border-primary border-t-transparent"></div>
-        <span className="ml-2">处理中...</span>
-      </div>
-    );
-  }
-
-  return <AuthorizationCard client={client} oauthParams={oauthParams} />;
-}