From 12a0d38bd9d2ad8e1453ba5460d37f16cc58a14a Mon Sep 17 00:00:00 2001
From: "zhang.pengcheng" <zhang.pengcheng@ivis.co.jp>
Date: Mon, 16 Jun 2025 14:08:48 +0900
Subject: [PATCH] =?UTF-8?q?/tobuy/addByRecipe=E3=81=AB=E6=96=B0=E3=81=97?=
 =?UTF-8?q?=E3=81=84=E5=88=86=E9=87=8F=E3=83=91=E3=83=A9=E3=83=A1=E3=83=BC?=
 =?UTF-8?q?=E3=82=BF=E3=82=92=E8=BF=BD=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/example/todoapp/controller/ToBuysController.java    | 4 ++--
 .../java/com/example/todoapp/service/ToBuysService.java     | 6 ++++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java b/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java
index 048c69f..d5753e9 100644
--- a/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java
+++ b/backend/src/main/java/com/example/todoapp/controller/ToBuysController.java
@@ -92,7 +92,6 @@ public class ToBuysController {
     }
 
 
-
     /**
      * 指定されたユーザーIDに基づいてすべての「買うもの」リストを取得する
      *
@@ -186,7 +185,8 @@ public class ToBuysController {
             Authentication authentication) {
 
         Long recipeId = payload.get("recipeId");
-        List<ToBuyResponseDTO> responseList = toBuysService.addByRecipeId(recipeId, authentication);
+        Long servings = payload.get("servings");
+        List<ToBuyResponseDTO> responseList = toBuysService.addByRecipeId(recipeId, servings,authentication);
 
         //shopのフィールドを削除
         List<Map<String, Object>> filteredList = responseList.stream()
diff --git a/backend/src/main/java/com/example/todoapp/service/ToBuysService.java b/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
index 4de730a..fe3bfe7 100644
--- a/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
+++ b/backend/src/main/java/com/example/todoapp/service/ToBuysService.java
@@ -220,7 +220,7 @@ public class ToBuysService {
      * @param authentication 認証情報
      * @return 追加された「買うもの」のリスト
      */
-    public List<ToBuyResponseDTO> addByRecipeId(Long recipeId, Authentication authentication) {
+    public List<ToBuyResponseDTO> addByRecipeId(Long recipeId, Long servings,Authentication authentication) {
         // ユーザー情報を取得
         String username = authentication.getName();
         User user = userRepository.findByUsername(username)
@@ -233,7 +233,9 @@ public class ToBuysService {
 
         for (RecipeStuffs rs : recipeStuffsList) {
             Stuffs stuff = rs.getStuff();
-            int requiredAmount = rs.getAmount();
+            
+            // 材料の数量をサービング数に基づいて計算
+            int requiredAmount = rs.getAmount() * (servings != null ? servings.intValue() : 1);
 
             Optional<ToBuys> existingToBuyOpt = toBuysRepository.findByUserAndStuff(user, stuff);