From ffd2d1a2910d4b5ce193e9479d1203118bf67c67 Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Thu, 5 Feb 2026 21:53:36 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E8=87=AA=E5=8A=A8=E6=A8=A1?=
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---
 lib/ai/model-router.ts | 54 +++++++++++++++++++++++-------------------
 1 file changed, 30 insertions(+), 24 deletions(-)

diff --git a/lib/ai/model-router.ts b/lib/ai/model-router.ts
index df0b793..5985503 100644
--- a/lib/ai/model-router.ts
+++ b/lib/ai/model-router.ts
@@ -116,30 +116,6 @@ export async function routeToModel(params: {
   // 获取所有可用模型
   const allModels = await getEnabledAiModelsWithProvider();
   console.log("[Model Router] Available models:", allModels.length);
-  
-  // 🆕 检查是否有配置的默认生图模型
-  const [settings] = await db.select().from(siteSettings).limit(1);
-  const configuredDefaultModelId = settings?.canvasAutoModeDefaultModelId;
-  
-  if (configuredDefaultModelId) {
-    // 如果配置了默认模型，直接使用该模型
-    const configuredModel = allModels.find(
-      (m) => m.model.id === configuredDefaultModelId && m.model.isEnabled && !m.model.isSubModel
-    );
-    
-    if (configuredModel) {
-      console.log("[Model Router] ✅ Using configured default model:", configuredModel.model.displayName);
-      return {
-        id: configuredModel.model.id,
-        displayName: configuredModel.model.displayName,
-        providerType: configuredModel.provider.type,
-        modelId: configuredModel.model.modelId,
-        reason: `管理员配置的默认模型 → ${configuredModel.model.displayName}`,
-      };
-    } else {
-      console.log("[Model Router] ⚠️ Configured default model not found or disabled, falling back to intent routing");
-    }
-  }
 
   // 获取意图对应的配置
   let config = INTENT_MODEL_MAP[intent] || INTENT_MODEL_MAP["chat"];
@@ -152,6 +128,36 @@ export async function routeToModel(params: {
     }
   }
 
+  // 🆕 检查是否有配置的默认生图模型（仅在能力匹配时使用）
+  const [settings] = await db.select().from(siteSettings).limit(1);
+  const configuredDefaultModelId = settings?.canvasAutoModeDefaultModelId;
+
+  if (configuredDefaultModelId) {
+    const configuredModel = allModels.find(
+      (m) => m.model.id === configuredDefaultModelId && m.model.isEnabled && !m.model.isSubModel
+    );
+
+    if (configuredModel) {
+      const matchesVision = !config.requireVision || configuredModel.model.supportsVision;
+      const matchesImageGen = !config.requireImageGen || configuredModel.model.supportsImageGen;
+
+      if (matchesVision && matchesImageGen) {
+        console.log("[Model Router] ✅ Using configured default model:", configuredModel.model.displayName);
+        return {
+          id: configuredModel.model.id,
+          displayName: configuredModel.model.displayName,
+          providerType: configuredModel.provider.type,
+          modelId: configuredModel.model.modelId,
+          reason: `管理员配置的默认模型 → ${configuredModel.model.displayName}`,
+        };
+      }
+
+      console.log("[Model Router] ⚠️ Configured default model does not match intent requirements, falling back");
+    } else {
+      console.log("[Model Router] ⚠️ Configured default model not found or disabled, falling back to intent routing");
+    }
+  }
+
   // 按优先级查找匹配的模型
   for (const providerType of config.providerTypes) {
     const candidates = allModels.filter((m) => {