fix: resolve OAuth redirect_uri error - Add URL validation and cleanup in auth config - Create environment variable check script - Add OAuth setup guide documentation

lib/auth.ts

@@ -7,6 +7,32 @@ import CredentialsProvider from "next-auth/providers/credentials";
 import { UserService } from "./services/user.service";
 import { AuthOptions } from "next-auth";
 
+// 验证和清理 NEXTAUTH_URL
+function getValidatedNextAuthUrl(): string {
+  const url = process.env.NEXTAUTH_URL;
+  if (!url) {
+    throw new Error("NEXTAUTH_URL 环境变量未设置");
+  }
+  
+  // 清理 URL，移除多余的引号
+  let cleanUrl = url.trim();
+  if (cleanUrl.startsWith('"') && cleanUrl.endsWith('"')) {
+    cleanUrl = cleanUrl.slice(1, -1);
+  }
+  if (cleanUrl.startsWith("'") && cleanUrl.endsWith("'")) {
+    cleanUrl = cleanUrl.slice(1, -1);
+  }
+  
+  // 确保 URL 格式正确
+  try {
+    new URL(cleanUrl);
+  } catch (error) {
+    throw new Error(`无效的 NEXTAUTH_URL: ${cleanUrl}`);
+  }
+  
+  return cleanUrl;
+}
+
 export const authOptions: AuthOptions = {
   adapter: PrismaAdapter(prisma),
 
@@ -94,4 +120,7 @@ export const authOptions: AuthOptions = {
   secret: process.env.NEXTAUTH_SECRET,
 
   debug: process.env.NODE_ENV === "development",
+  
+  // 使用验证后的 URL
+  url: getValidatedNextAuthUrl(),
 };