From ce4325669051c2c81f2a9786f6003f84e527cb8f Mon Sep 17 00:00:00 2001
From: wangdl <wangdl@longde.cloud>
Date: Sat, 6 Jun 2026 13:56:28 +0800
Subject: [PATCH] =?UTF-8?q?debug:=20rag-chat=20sendMessage=20=E6=B7=BB?=
 =?UTF-8?q?=E5=8A=A0=E8=AF=A6=E7=BB=86=E6=97=A5=E5=BF=97=E5=AE=9A=E4=BD=8D?=
 =?UTF-8?q?=20AI=20Gateway=20=E8=B0=83=E7=94=A8=E5=A4=B1=E8=B4=A5=E5=8E=9F?=
 =?UTF-8?q?=E5=9B=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 src/modules/rag-chat/rag-chat.service.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/modules/rag-chat/rag-chat.service.ts b/src/modules/rag-chat/rag-chat.service.ts
index 1026ab4..25cb486 100644
--- a/src/modules/rag-chat/rag-chat.service.ts
+++ b/src/modules/rag-chat/rag-chat.service.ts
@@ -53,6 +53,7 @@ export class RagChatService {
 
     // Retrieve knowledge base context
     const context = await this.loadContext(session.knowledgeBaseId);
+    this.logger.log(`RAG context: isEmpty=${context.isEmpty}, textLen=${context.text.length}, citations=${context.citations.length}, aiGateway=${!!this.aiGateway}`);
 
     // Generate AI response
     let reply: string;
@@ -60,6 +61,7 @@ export class RagChatService {
 
     if (this.aiGateway && context.text) {
       try {
+        this.logger.log(`Calling AI Gateway with ${context.text.length} chars context`);
         const messages = [
           { role: 'system' as const, content: this.buildSystemPrompt(context.text) },
           { role: 'user' as const, content },
@@ -73,13 +75,15 @@ export class RagChatService {
           messages,
           maxTokens: 2048,
         });
+        this.logger.log(`AI Gateway response: parsed=${!!resp.parsed}, rawLen=${resp.rawText?.length ?? 0}`);
         reply = resp.parsed?.answer ?? String(resp.parsed?.content ?? '抱歉，AI 暂时无法生成回答。');
         citations = context.citations;
       } catch (err: any) {
-        this.logger.error('AI Gateway failed, falling back', err?.message);
+        this.logger.error(`AI Gateway FAILED: ${err?.message}`, err?.stack?.substring(0, 300));
         reply = this.fallbackReply(context.isEmpty);
       }
     } else {
+      this.logger.warn(`Falling back: aiGateway=${!!this.aiGateway}, hasText=${!!context.text}`);
       reply = this.fallbackReply(context.isEmpty);
     }