优化和重构代码，增加前端可以设置加密配置数据的密钥

app/api/auth.ts

@@ -52,29 +52,6 @@ export function auth(req: NextRequest, modelProvider: ModelProvider) {
       msg: "you are not allowed to access with your own api key",
     };
   }
-  // Special handling for Bedrock
-  if (modelProvider === ModelProvider.Bedrock) {
-    const region = serverConfig.awsRegion;
-    const accessKeyId = serverConfig.awsAccessKey;
-    const secretAccessKey = serverConfig.awsSecretKey;
-
-    console.log("[Auth] Bedrock credentials:", {
-      region,
-      accessKeyId: accessKeyId ? "***" : undefined,
-      secretKey: secretAccessKey ? "***" : undefined,
-    });
-
-    // Check if AWS credentials are provided
-    if (!region || !accessKeyId || !secretAccessKey) {
-      return {
-        error: true,
-        msg: "Missing AWS credentials. Please configure Region, Access Key ID, and Secret Access Key in settings.",
-      };
-    }
-
-    return { error: false };
-  }
-
   // if user does not provide an api key, inject system api key
   if (!apiKey) {
     const serverConfig = getServerSideConfig();
@@ -120,6 +97,14 @@ export function auth(req: NextRequest, modelProvider: ModelProvider) {
       case ModelProvider.ChatGLM:
         systemApiKey = serverConfig.chatglmApiKey;
         break;
+      case ModelProvider.Bedrock:
+        systemApiKey =
+          serverConfig.awsRegion +
+          ":" +
+          serverConfig.awsAccessKey +
+          ":" +
+          serverConfig.awsSecretKey;
+        break;
       case ModelProvider.GPT:
       default:
         if (req.nextUrl.pathname.includes("azure/deployments")) {