From aae0629b2dc924ed6f9ca7962a2bbb3ea2da798a Mon Sep 17 00:00:00 2001
From: hhs <386998068@qq.com>
Date: Sun, 14 Jun 2026 11:55:19 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20LLM=20=E6=9C=8D=E5=8A=A1=E5=8E=BB?=
 =?UTF-8?q?=E9=99=A4=E9=87=8D=E5=A4=8D=E9=BB=98=E8=AE=A4=E5=80=BC=EF=BC=8C?=
 =?UTF-8?q?=E6=96=B0=E5=A2=9E=20httpClientTimeout=20=E5=8F=82=E6=95=B0?=
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- 去除 model/endpoint 的 fallback 默认值
- HTTP Client 超时从 config 传入
---
 backend/internal/ai/llm/openai.go | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/backend/internal/ai/llm/openai.go b/backend/internal/ai/llm/openai.go
index bbc9444..754176c 100644
--- a/backend/internal/ai/llm/openai.go
+++ b/backend/internal/ai/llm/openai.go
@@ -26,24 +26,23 @@ type OpenAIService struct {
 }
 
 // NewOpenAIService 创建 OpenAI LLM 服务。
-func NewOpenAIService(apiKey, model, endpoint string, timeoutSec int, logger *zap.SugaredLogger) *OpenAIService {
-	if model == "" {
-		model = "gpt-4o"
-	}
-	if endpoint == "" {
-		endpoint = "https://api.openai.com/v1"
-	}
+// model、endpoint 由 config 层保证非空。
+func NewOpenAIService(apiKey, model, endpoint string, timeoutSec, httpClientTimeoutSec int, logger *zap.SugaredLogger) *OpenAIService {
 	timeout := time.Duration(timeoutSec) * time.Second
 	if timeout <= 0 {
 		timeout = 10 * time.Second
 	}
+	httpClientTimeout := time.Duration(httpClientTimeoutSec) * time.Second
+	if httpClientTimeout <= 0 {
+		httpClientTimeout = 60 * time.Second
+	}
 	return &OpenAIService{
 		apiKey:   apiKey,
 		model:    model,
 		endpoint: endpoint,
 		timeout:  timeout,
 		logger:   logger,
-		client:   &http.Client{Timeout: 60 * time.Second}, // HTTP client timeout > LLM timeout
+		client:   &http.Client{Timeout: httpClientTimeout},
 	}
 }