add brave as a search engine

src/chains/imageSearchAgent.ts

@@ -9,6 +9,7 @@ import { BaseMessage } from '@langchain/core/messages';
 import { StringOutputParser } from '@langchain/core/output_parsers';
 import { searchSearxng } from '../lib/searchEngines/searxng';
 import { searchGooglePSE } from '../lib/searchEngines/google_pse';
+import { searchBraveAPI } from '../lib/searchEngines/brave';
 import { getSearchEngineBackend } from '../config';
 import type { BaseChatModel } from '@langchain/core/language_models/chat_models';
 
@@ -46,16 +47,15 @@ async function performImageSearch(query: string) {
     case 'google': {
       const googleResult = await searchGooglePSE(query);
       images = googleResult.results.map((result) => {
-          if (result.img_src && result.url && result.title) {
-            return {
-              img_src: result.img_src,
-              url: result.url,
-              title: result.title,
-              source: result.displayLink
-            };
-          }
-        })
-        .filter(Boolean);
+        if (result.img_src && result.url && result.title) {
+          return {
+            img_src: result.img_src,
+            url: result.url,
+            title: result.title,
+            source: result.displayLink
+          };
+        }
+      }).filter(Boolean);
       break;
     }
 
@@ -76,6 +76,21 @@ async function performImageSearch(query: string) {
       break;
     }
 
+    case 'brave': {
+      const braveResult = await searchBraveAPI(query);
+      images = braveResult.results.map((result) => {
+        if (result.img_src && result.url && result.title) {
+          return {
+            img_src: result.img_src,
+            url: result.url,
+            title: result.title,
+            source: result.url
+          };
+        }
+      }).filter(Boolean);
+      break;
+    }
+
     default:
       throw new Error(`Unknown search engine ${searchEngine}`);
   }