From 21a6280db81141ff1c03f3f5d6ead4d2256832a6 Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Thu, 5 Feb 2026 20:15:12 +0800
Subject: [PATCH] =?UTF-8?q?=E9=81=BF=E5=85=8D=E7=94=9F=E5=9B=BE=E5=8D=A0?=
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---
 hooks/use-auto-resume.ts | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/hooks/use-auto-resume.ts b/hooks/use-auto-resume.ts
index 569a54f72..febc4ea34 100644
--- a/hooks/use-auto-resume.ts
+++ b/hooks/use-auto-resume.ts
@@ -36,6 +36,9 @@ export function useAutoResume({
   }, [autoResume, initialMessages.at, resumeStream]);
 
   useEffect(() => {
+    if (!autoResume) {
+      return;
+    }
     if (!dataStream) {
       return;
     }
@@ -43,11 +46,16 @@ export function useAutoResume({
       return;
     }
 
-    const dataPart = dataStream[0];
+    const dataPart = dataStream[dataStream.length - 1];
 
     if (dataPart.type === "data-appendMessage") {
       const message = JSON.parse(dataPart.data);
-      setMessages([...initialMessages, message]);
+      setMessages((prev) => {
+        if (prev.some((m) => m.id === message.id)) {
+          return prev;
+        }
+        return [...prev, message];
+      });
     }
-  }, [dataStream, initialMessages, setMessages]);
+  }, [autoResume, dataStream, setMessages]);
 }