improved the experience when no transaction information is detected

pkg/api/large_language_models.go

@@ -219,6 +219,10 @@ func (a *LargeLanguageModelsApi) RecognizeReceiptImageHandler(c *core.WebContext
 		return nil, errs.Or(err, errs.ErrOperationFailed)
 	}
 
+	if llmResponse == nil || len(llmResponse.Content) == 0 || strings.HasPrefix(llmResponse.Content, "{}") {
+		return nil, errs.ErrNoTransactionInformationInImage
+	}
+
 	var result *models.RecognizedReceiptImageResult
 
 	if err := json.Unmarshal([]byte(llmResponse.Content), &result); err != nil {
@@ -236,7 +240,7 @@ func (a *LargeLanguageModelsApi) parseRecognizedReceiptImageResponse(c *core.Web
 
 	if recognizedResult == nil {
 		log.Errorf(c, "[large_language_models.parseRecognizedReceiptImageResponse] recoginzed result is null")
-		return nil, errs.ErrOperationFailed
+		return nil, errs.ErrNoTransactionInformationInImage
 	}
 
 	if recognizedResult.Type == "income" {
@@ -269,6 +273,8 @@ func (a *LargeLanguageModelsApi) parseRecognizedReceiptImageResponse(c *core.Web
 				recognizedReceiptImageResponse.CategoryId = category.CategoryId
 			}
 		}
+	} else if len(recognizedResult.Type) == 0 {
+		return nil, errs.ErrNoTransactionInformationInImage
 	} else {
 		log.Errorf(c, "[large_language_models.parseRecognizedReceiptImageResponse] recoginzed transaction type \"%s\" is invalid", recognizedResult.Type)
 		return nil, errs.ErrOperationFailed

pkg/errs/large_language_model.go

@@ -8,4 +8,5 @@ var (
 	ErrNoAIRecognitionImage                 = NewNormalError(NormalSubcategoryLargeLanguageModel, 1, http.StatusBadRequest, "no image for AI recognition")
 	ErrAIRecognitionImageIsEmpty            = NewNormalError(NormalSubcategoryLargeLanguageModel, 2, http.StatusBadRequest, "image for AI recognition is empty")
 	ErrExceedMaxAIRecognitionImageFileSize  = NewNormalError(NormalSubcategoryLargeLanguageModel, 3, http.StatusBadRequest, "exceed the maximum size of image file for AI recognition")
+	ErrNoTransactionInformationInImage      = NewNormalError(NormalSubcategoryLargeLanguageModel, 4, http.StatusBadRequest, "no transaction information detected")
 )

src/locales/de.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Abfrageelemente dürfen nicht leer sein",
         "query items too much": "Zu viele Abfrageelemente",
         "query items have invalid item": "Ungültiges Element in Abfrageelementen",

src/locales/en.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "There are no query items",
         "query items too much": "There are too many query items",
         "query items have invalid item": "There is invalid item in query items",

src/locales/es.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "--",
         "query items too much": "--",
         "query items have invalid item": "Hay un elemento no válido en los elementos de consulta",

src/locales/it.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Non ci sono elementi di query",
         "query items too much": "Ci sono troppi elementi di query",
         "query items have invalid item": "C'è un elemento non valido negli elementi di query",

src/locales/ja.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "クエリ項目がありません",
         "query items too much": "クエリ項目が多すぎます",
         "query items have invalid item": "クエリ項目に無効な項目があります",

src/locales/nl.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Geen zoekitems opgegeven",
         "query items too much": "Te veel zoekitems",
         "query items have invalid item": "Ongeldig item in zoekitems",

src/locales/pt_BR.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Não há itens de consulta",
         "query items too much": "Há muitos itens de consulta",
         "query items have invalid item": "Há item inválido nos itens de consulta",

src/locales/ru.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Нет элементов запроса",
         "query items too much": "Слишком много элементов запроса",
         "query items have invalid item": "В элементах запроса присутствует недопустимый элемент",

src/locales/uk.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Елементи запиту не можуть бути порожніми",
         "query items too much": "Занадто багато елементів запиту",
         "query items have invalid item": "Запит містить недійсний елемент",

src/locales/vi.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "There is no image for AI recognition",
         "image for AI recognition is empty": "Image for AI recognition file is empty",
         "exceed the maximum size of image file for AI recognition": "The uploaded image for AI recognition exceeds the maximum allowed file size",
+        "no transaction information detected": "No transaction information detected",
         "query items cannot be blank": "Không có mục truy vấn",
         "query items too much": "Có quá nhiều mục truy vấn",
         "query items have invalid item": "Có mục không hợp lệ trong các mục truy vấn",

src/locales/zh_Hans.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "没有用于AI识别的图片",
         "image for AI recognition is empty": "用于AI识别的图片为空",
         "exceed the maximum size of image file for AI recognition": "用于AI识别的图片超出了允许的最大文件大小",
+        "no transaction information detected": "没有检测到交易信息",
         "query items cannot be blank": "请求项目不能为空",
         "query items too much": "请求项目过多",
         "query items have invalid item": "请求项目中有非法项目",

src/locales/zh_Hant.json

@@ -1228,6 +1228,7 @@
         "no image for AI recognition": "沒有用於AI識別的圖片檔案",
         "image for AI recognition is empty": "用於AI識別的圖片檔案為空",
         "exceed the maximum size of image file for AI recognition": "用於AI識別的圖片超出了允許的最大檔案大小",
+        "no transaction information detected": "沒有檢測到交易資訊",
         "query items cannot be blank": "查詢項目不能為空",
         "query items too much": "查詢項目過多",
         "query items have invalid item": "查詢項目中有非法項目",

templates/prompt/receipt_image_recognition.tmpl

@@ -25,7 +25,8 @@ Your task is to extract structured transaction data from images provided by the
 1. Only include fields you can confidently identify.
 2. If unsure about a value, omit the field (do not guess).
 3. If the image contains multiple items, please combine them into a single transaction.
-4. Always return valid JSON.
+4. If the image contains no transaction information, simply return an empty JSON object.
+5. Always return valid JSON.
 
 ## Options
 ### Expense categories: