feat: change scene fusion to serial processing with 5s delay and add detailed logging

app/api/scene-fusion/route.ts

@@ -328,58 +328,66 @@ export async function POST(request: Request) {
       })
     );
     
-    // 6. 并发处理所有场景
-    const results = await Promise.all(
-      processedScenes.map(async (scene) => {
+    // 6. 串行处理所有场景，每次间隔5秒
+    const results = [];
+    
+    for (let i = 0; i < processedScenes.length; i++) {
+      const scene = processedScenes[i];
+      
+      // 如果不是第一张图，等待5秒
+      if (i > 0) {
+        console.log(`[SceneFusion] Waiting 5 seconds before processing scene ${i + 1}/${processedScenes.length}...`);
+        await new Promise((resolve) => setTimeout(resolve, 5000));
+      }
+      
+      try {
+        const result = await processScene(
+          productImageUrl,
+          scene.imageUrl,
+          scene.customPrompt,
+          config.defaultPrompt,
+          provider.baseUrl,
+          provider.apiKey,
+          model.modelId
+        );
+        
+        // 保存到数据库
+        const messageId = `scene-fusion-${Date.now()}-${scene.id}`;
+        const chatId = `scene-fusion-batch-${Date.now()}`;
+        
         try {
-          const result = await processScene(
-            productImageUrl,
-            scene.imageUrl,
-            scene.customPrompt,
-            config.defaultPrompt,
-            provider.baseUrl,
-            provider.apiKey,
-            model.modelId
-          );
-          
-          // 保存到数据库
-          const messageId = `scene-fusion-${Date.now()}-${scene.id}`;
-          const chatId = `scene-fusion-batch-${Date.now()}`;
-          
-          try {
-            await db.insert(generatedImage).values({
-              userId: session.user.id,
-              chatId,
-              messageId,
-              thumbnailUrl: result.thumbnail,
-              originalUrl: result.original,
-              imageSize: "2K",
-              prompt: scene.customPrompt 
-                ? `${config.defaultPrompt} ${scene.customPrompt}` 
-                : config.defaultPrompt,
-              modelId: model.modelId,
-            });
-            console.log(`[SceneFusion] Saved image to gallery: ${result.original.substring(0, 80)}...`);
-          } catch (dbError) {
-            console.error("[SceneFusion] Failed to save to gallery:", dbError);
-          }
-          
-          return {
-            id: scene.id,
-            status: "completed" as const,
-            result: result.thumbnail, // 返回缩略图用于预览
-            originalUrl: result.original, // 原图用于下载
-          };
-        } catch (error) {
-          console.error(`[SceneFusion] Failed to process scene ${scene.id}:`, error);
-          return {
-            id: scene.id,
-            status: "failed" as const,
-            error: error instanceof Error ? error.message : "处理失败",
-          };
+          await db.insert(generatedImage).values({
+            userId: session.user.id,
+            chatId,
+            messageId,
+            thumbnailUrl: result.thumbnail,
+            originalUrl: result.original,
+            imageSize: "2K",
+            prompt: scene.customPrompt 
+              ? `${config.defaultPrompt} ${scene.customPrompt}` 
+              : config.defaultPrompt,
+            modelId: model.modelId,
+          });
+          console.log(`[SceneFusion] Saved image to gallery: ${result.original.substring(0, 80)}...`);
+        } catch (dbError) {
+          console.error("[SceneFusion] Failed to save to gallery:", dbError);
         }
-      })
-    );
+        
+        results.push({
+          id: scene.id,
+          status: "completed" as const,
+          result: result.thumbnail, // 返回缩略图用于预览
+          originalUrl: result.original, // 原图用于下载
+        });
+      } catch (error) {
+        console.error(`[SceneFusion] Failed to process scene ${scene.id}:`, error);
+        results.push({
+          id: scene.id,
+          status: "failed" as const,
+          error: error instanceof Error ? error.message : "处理失败",
+        });
+      }
+    }
     
     // 6. 返回结果
     const successCount = results.filter((r) => r.status === "completed").length;