From 9ea5a745bc0f8b26a382fee8457a27ed0d7e4973 Mon Sep 17 00:00:00 2001
From: mummhy0811 <mummhy0811@gmail.com>
Date: Tue, 7 May 2024 17:11:33 +0900
Subject: [PATCH] =?UTF-8?q?Feat:=20=EB=A9=94=EB=89=B4=20=EC=B6=94=EC=B2=9C?=
 =?UTF-8?q?=20=EB=AA=A9=EB=A1=9D=20=EC=A1=B0=ED=9A=8C(#35)?=
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---
 .../starbucks/controller/MenuController.java  |  3 +++
 .../hanaro/starbucks/service/MenuService.java | 19 +++++++++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/hanaro/starbucks/controller/MenuController.java b/src/main/java/com/hanaro/starbucks/controller/MenuController.java
index 063c438..ce6343b 100644
--- a/src/main/java/com/hanaro/starbucks/controller/MenuController.java
+++ b/src/main/java/com/hanaro/starbucks/controller/MenuController.java
@@ -51,4 +51,7 @@ public void updateMenu(@PathVariable int menuIdx, @RequestPart(value = "dto") Me
     public List<CategoryResDto> getCategoryList() {
         return categoryService.getCategoryList();
     }
+
+    @GetMapping("/recommendations")
+    public List<MenuResDto> getRecommendationList() { return menuService.getRecommendationList(); }
 }
diff --git a/src/main/java/com/hanaro/starbucks/service/MenuService.java b/src/main/java/com/hanaro/starbucks/service/MenuService.java
index 5ae4469..17cbc47 100644
--- a/src/main/java/com/hanaro/starbucks/service/MenuService.java
+++ b/src/main/java/com/hanaro/starbucks/service/MenuService.java
@@ -12,8 +12,7 @@
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 
-import java.util.List;
-import java.util.Optional;
+import java.util.*;
 import java.util.stream.Collectors;
 
 @Service
@@ -73,4 +72,20 @@ public void updateMenu(int menuIdx, MenuReqDto menuReqDto, MultipartFile img) th
         menu.update(menuReqDto, url);
         menuRepository.save(menu);
     }
+
+    public List<MenuResDto> getRecommendationList(){
+        List<Menu> menus = menuRepository.findAll();
+
+        Set<Integer> idxSet = new HashSet<>(9);
+        List<Menu> menuList = new ArrayList<>(9);
+
+        Random random = new Random();
+
+        while (idxSet.size() < 9) {
+            int idx = random.nextInt(menus.size());
+            idxSet.add(idx);
+            menuList.add(menus.get(idx));
+        }
+        return menuList.stream().map(MenuResDto::new).collect(Collectors.toList());
+    }
 }