fix(server): generate image (#11599)

packages/backend/server/src/__tests__/copilot-provider.spec.ts

@@ -476,6 +476,19 @@ const actions = [
     },
     type: 'image' as const,
   },
+  {
+    promptName: ['debug:action:dalle3'],
+    messages: [
+      {
+        role: 'user' as const,
+        content: 'Panda',
+      },
+    ],
+    verifier: (t: ExecutionContext<Tester>, link: string) => {
+      t.truthy(checkUrl(link), 'should be a valid url');
+    },
+    type: 'image' as const,
+  },
 ];
 
 for (const { name, promptName, messages, verifier, type } of actions) {

packages/backend/server/src/plugins/copilot/providers/openai.ts

@@ -313,9 +313,9 @@ export class OpenAIProvider
         prompt,
       });
 
-      return result.images
-        .map(image => image.base64)
-        .filter((v): v is string => !!v);
+      return result.images.map(
+        image => `data:image/png;base64,${image.base64}`
+      );
     } catch (e: any) {
       metrics.ai.counter('generate_images_errors').add(1, { model });
       throw this.handleError(e, model, options);