From 754d609399ad6ef28508b788de48fa17271ae25c Mon Sep 17 00:00:00 2001
From: admin <peancharoen.pslcp3@gmail.com>
Date: Tue, 2 Jun 2026 15:49:39 +0700
Subject: [PATCH] fix(ai): correct double-wrap in OCR engine endpoints causing
 e.map error
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Controller was returning { data: engines } which TransformInterceptor
wrapped again into { data: { data: engines } }. extractData() only peeled
one layer, leaving an object instead of the array — causing .map() to fail
in OcrEngineSelector.

- Return data directly from getOcrEngines() and selectOcrEngine()
- Add Array.isArray guard in OcrEngineSelector as defensive layer
---
 backend/src/modules/ai/ai.controller.ts            | 13 ++++---------
 frontend/components/admin/ai/OcrEngineSelector.tsx |  2 +-
 2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/backend/src/modules/ai/ai.controller.ts b/backend/src/modules/ai/ai.controller.ts
index e241eed9..cb5ce996 100644
--- a/backend/src/modules/ai/ai.controller.ts
+++ b/backend/src/modules/ai/ai.controller.ts
@@ -1041,12 +1041,11 @@ export class AiController {
   @ApiOperation({
     summary: 'OCR Engines — ดึงรายการเอนจิน OCR ทั้งหมดที่มีในระบบ (T003)',
   })
-  async getOcrEngines(): Promise<{ data: OcrEngineResponseDto[] }> {
+  async getOcrEngines(): Promise<OcrEngineResponseDto[]> {
     if (!this.ocrService) {
       throw new SystemException('OcrService not injected in AiController');
     }
-    const engines = await this.ocrService.getOcrEngines();
-    return { data: engines };
+    return this.ocrService.getOcrEngines();
   }
 
   @Post('ocr-engines/:engineId/select')
@@ -1064,14 +1063,10 @@ export class AiController {
   async selectOcrEngine(
     @Param('engineId', ParseUuidPipe) engineId: string,
     @CurrentUser() user: User
-  ): Promise<{ data: OcrEngineConfiguration }> {
+  ): Promise<OcrEngineConfiguration> {
     if (!this.ocrService) {
       throw new SystemException('OcrService not injected in AiController');
     }
-    const engine = await this.ocrService.selectOcrEngine(
-      engineId,
-      user.user_id
-    );
-    return { data: engine };
+    return this.ocrService.selectOcrEngine(engineId, user.user_id);
   }
 }
diff --git a/frontend/components/admin/ai/OcrEngineSelector.tsx b/frontend/components/admin/ai/OcrEngineSelector.tsx
index b2e3fb5e..a6458f8a 100644
--- a/frontend/components/admin/ai/OcrEngineSelector.tsx
+++ b/frontend/components/admin/ai/OcrEngineSelector.tsx
@@ -22,7 +22,7 @@ export default function OcrEngineSelector() {
     try {
       setIsLoading(true);
       const data = await adminAiService.getOcrEngines();
-      setEngines(data);
+      setEngines(Array.isArray(data) ? data : []);
     } catch (_err: unknown) {
       toast.error('ไม่สามารถดึงข้อมูล OCR Engines ได้');
     } finally {