From d9e0c5b96c40efa1709b12dced0c58eae0279c96 Mon Sep 17 00:00:00 2001
From: seokhee <skdlzl753@naver.com>
Date: Mon, 16 Dec 2024 12:58:32 +0900
Subject: [PATCH] =?UTF-8?q?[#527]=20fix:=20=EA=B2=80=EC=83=89=20=ED=82=A4?=
 =?UTF-8?q?=EC=9B=8C=EB=93=9C=20=EC=A1=B0=ED=95=A9=20=EC=B6=94=EA=B0=80?=
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---
 .../domain/search/service/SearchService.java  | 25 ++++++++++++++
 .../search/service/SearchServiceTest.java     | 33 +++++++++++++++++++
 2 files changed, 58 insertions(+)

diff --git a/src/main/java/com/jeju/nanaland/domain/search/service/SearchService.java b/src/main/java/com/jeju/nanaland/domain/search/service/SearchService.java
index 799b5153..befe6132 100644
--- a/src/main/java/com/jeju/nanaland/domain/search/service/SearchService.java
+++ b/src/main/java/com/jeju/nanaland/domain/search/service/SearchService.java
@@ -584,4 +584,29 @@ private List<String> getTopSearchVolumeList() {
     Set<String> topSearchVolumes = zSetOperations.reverseRange(SEARCH_VOLUME_KEY, 0, 3);
     return topSearchVolumes != null ? new ArrayList<>(topSearchVolumes) : new ArrayList<>();
   }
+
+  /**
+   * 검색으로 들어온 키워드 조합 예를 들어 [jeju city restaurant]가 인자로 들어오면 [jeju, city, restaurant, jejucity,
+   * jejucityrestaurant, cityrestaurant]를 반환
+   *
+   * @param keywords 공백으로 구분된 사용자의 검색어
+   * @return 조합된 사용자의 검색어
+   */
+  private List<String> combinationUserKeywords(List<String> keywords) {
+    if (keywords.size() == 1) {
+      return keywords;
+    }
+
+    List<String> combinedKeywords = new ArrayList<>(keywords);
+    for (int i = 0; i < keywords.size() - 1; i++) {
+      StringBuilder combinedKeyword = new StringBuilder();
+      combinedKeyword.append(keywords.get(i));
+      for (int j = i + 1; j < keywords.size(); j++) {
+        combinedKeyword.append(keywords.get(j));
+        combinedKeywords.add(combinedKeyword.toString());
+      }
+    }
+
+    return combinedKeywords;
+  }
 }
diff --git a/src/test/java/com/jeju/nanaland/domain/search/service/SearchServiceTest.java b/src/test/java/com/jeju/nanaland/domain/search/service/SearchServiceTest.java
index 14c9a248..2a436112 100644
--- a/src/test/java/com/jeju/nanaland/domain/search/service/SearchServiceTest.java
+++ b/src/test/java/com/jeju/nanaland/domain/search/service/SearchServiceTest.java
@@ -1,5 +1,6 @@
 package com.jeju.nanaland.domain.search.service;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.when;
 
 import com.jeju.nanaland.domain.experience.repository.ExperienceRepository;
@@ -10,7 +11,11 @@
 import com.jeju.nanaland.domain.nature.repository.NatureRepository;
 import com.jeju.nanaland.domain.restaurant.repository.RestaurantRepository;
 import com.jeju.nanaland.global.config.RedisConfig;
+import java.util.ArrayList;
+import java.util.List;
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.junit.jupiter.api.parallel.Execution;
 import org.junit.jupiter.api.parallel.ExecutionMode;
@@ -54,4 +59,32 @@ public void setup() {
     when(redisTemplate.opsForZSet()).thenReturn(zSetOperations);
   }
 
+  @Test
+  @DisplayName("검색어 조합 테스트")
+  void combinationUserKeywordsTest() {
+    // given
+    List<String> keywords = List.of("jeju", "city", "restaurant");
+
+    // when
+    List<String> combinedKeywords = new ArrayList<>(keywords);
+    for (int i = 0; i < keywords.size() - 1; i++) {
+      StringBuilder combinedKeyword = new StringBuilder();
+      combinedKeyword.append(keywords.get(i));
+      for (int j = i + 1; j < keywords.size(); j++) {
+        combinedKeyword.append(keywords.get(j));
+        combinedKeywords.add(combinedKeyword.toString());
+      }
+    }
+
+    // then
+    assertThat(combinedKeywords).containsExactly(
+        "jeju",
+        "city",
+        "restaurant",
+        "jejucity",
+        "jejucityrestaurant",
+        "cityrestaurant"
+    );
+  }
+
 }
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