From 7bf2f2e1ad1fa6119a75e0cbce5182e7aaa88f30 Mon Sep 17 00:00:00 2001
From: "qichi.liang" <xxqianyi@qq.com>
Date: Wed, 20 May 2026 18:25:45 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20AI=20=E9=A2=84=E6=B5=8B=E5=A4=B1?=
 =?UTF-8?q?=E8=B4=A5=E6=97=B6=E6=98=BE=E7=A4=BA=E6=98=8E=E7=A1=AE=E9=94=99?=
 =?UTF-8?q?=E8=AF=AF=E5=8E=9F=E5=9B=A0?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Real 模式下无 API Key 时提示「未配置 AI API Key」
- SSE 错误端点返回真实错误消息而非通用提示
---
 backend/src/routes/ai.ts         | 8 ++++----
 backend/src/services/ai/index.ts | 4 ++++
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/backend/src/routes/ai.ts b/backend/src/routes/ai.ts
index a8d96fc..bd414ce 100644
--- a/backend/src/routes/ai.ts
+++ b/backend/src/routes/ai.ts
@@ -17,8 +17,8 @@ async function predictFormula(request: FastifyRequest<{ Body: { ingredients: Arr
   try {
     const result = await aiService.predictMetrics(ingredients)
     reply.raw.write(`data: ${JSON.stringify({ type: 'result', content: result })}\n\n`)
-  } catch {
-    reply.raw.write(`data: ${JSON.stringify({ type: 'error', content: '预测失败' })}\n\n`)
+  } catch (err) {
+    reply.raw.write(`data: ${JSON.stringify({ type: 'error', content: (err as Error).message })}\n\n`)
   }
   reply.raw.end()
 }
@@ -44,8 +44,8 @@ async function exploreFormula(request: FastifyRequest<{ Body: {
     for (const option of parsed) {
       reply.raw.write(`data: ${JSON.stringify({ type: 'option', option })}\n\n`)
     }
-  } catch {
-    reply.raw.write(`data: ${JSON.stringify({ type: 'error', content: '推演失败' })}\n\n`)
+  } catch (err) {
+    reply.raw.write(`data: ${JSON.stringify({ type: 'error', content: (err as Error).message })}\n\n`)
   }
   reply.raw.write(`data: ${JSON.stringify({ type: 'done' })}\n\n`)
   reply.raw.end()
diff --git a/backend/src/services/ai/index.ts b/backend/src/services/ai/index.ts
index 52344fd..564fd28 100644
--- a/backend/src/services/ai/index.ts
+++ b/backend/src/services/ai/index.ts
@@ -136,6 +136,10 @@ export class AIService {
       return MOCK_RESPONSES[capability] ?? '{}'
     }
 
+    if (Object.keys(this.providers).length === 0) {
+      throw new Error('未配置 AI API Key，请在设置中配置或切换到 Mock 模式')
+    }
+
     await this.rateLimiter.acquire()
 
     const { provider, model } = this.selectProvider(opts.model)