[FEAT] 목표 추천

src/main/java/com/fav/daengnyang/domain/target/controller/TargetController.java

@@ -17,6 +17,7 @@
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.HashMap;
 import java.util.List;
 
 @RequiredArgsConstructor
@@ -105,4 +106,11 @@ public SuccessResponse<String> deleteTarget(
 
         return SuccessResponse.ok("목표가 성공적으로 삭제되었습니다.");
     }
+
+    // 목표 추천하기
+    @GetMapping("/recommend")
+    public SuccessResponse<?> recommendTarget(@AuthenticationPrincipal MemberPrincipal memberPrincipal){
+        HashMap<String, String> response = targetService.recommendTarget(memberPrincipal.getMemberId());
+        return SuccessResponse.ok(response);
+    }
 }

src/main/java/com/fav/daengnyang/domain/target/repository/TargetRepository.java

@@ -11,7 +11,15 @@
 @Repository
 public interface TargetRepository extends JpaRepository<Target, Long> {
 
-    // 특정 memberId를 가진 Bankbook의 모든 Target을 조회하는 JPQL 쿼리
+    // 특정 memberId를 가진 Target의 모든 Target을 조회하는 JPQL 쿼리
     @Query("SELECT t FROM Target t JOIN t.account a WHERE a.member.memberId = :memberId")
     List<Target> findAllByMemberId(@Param("memberId") Long memberId);
+
+    @Query("SELECT t FROM Target t "
+            + "JOIN t.account a "
+            + "JOIN a.member m "
+            + "JOIN Pet p ON p.member.memberId = m.memberId "
+            + "WHERE p.petType = :petType "
+            + "AND m.memberId != :memberId")
+    List<Target> findAllTargetsExceptMine(@Param("memberId") Long memberId, @Param("petType") String petType);
 }

src/main/java/com/fav/daengnyang/domain/target/service/TargetService.java

@@ -2,28 +2,59 @@
 
 import com.fav.daengnyang.domain.account.entity.Account;
 import com.fav.daengnyang.domain.account.repository.AccountRepository;
+import com.fav.daengnyang.domain.pet.entity.Pet;
+import com.fav.daengnyang.domain.pet.repository.PetRepository;
 import com.fav.daengnyang.domain.target.entity.Target;
 import com.fav.daengnyang.domain.target.repository.TargetRepository;
 import com.fav.daengnyang.domain.target.service.dto.request.CreateTargetRequest;
 import com.fav.daengnyang.domain.target.service.dto.response.TargetDetailResponse;
 import com.fav.daengnyang.domain.target.service.dto.response.TargetResponse;
 import com.fav.daengnyang.domain.targetDetail.entity.TargetDetail;
 import com.fav.daengnyang.domain.targetDetail.repository.TargetDetailRepository;
+import com.fav.daengnyang.global.exception.CustomException;
+import com.fav.daengnyang.global.exception.ErrorCode;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.HashMap;
 import java.util.List;
+import java.util.Random;
 import java.util.stream.Collectors;
 
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
+@Slf4j
 public class TargetService {
 
     private final TargetRepository targetRepository;
     private final TargetDetailRepository targetDetailRepository;
     private final AccountRepository accountRepository;
+    private final PetRepository petRepository;
+    private final Random random = new Random();
+
+    // 타겟 추천 메소드
+    public HashMap<String, String> recommendTarget(Long memberId){
+        // 1. 반려동물 정보 찾기
+        Pet pet = petRepository.findByMemberMemberId(memberId)
+                .orElseThrow(() -> new CustomException(ErrorCode.PET_NOT_FOUND));
+
+        // 2. 다른 목표 반려동물 찾기
+        List<Target> targetList = targetRepository.findAllTargetsExceptMine(memberId, pet.getPetType());
+        log.info("targetList" + targetList);
+
+        // 3. 목표 추천
+        int index = random.nextInt(targetList.size());
+        Target target = targetList.get(index);
+
+        // 4. response
+        HashMap<String, String> response = new HashMap<>();
+        response.put("recommend", target.getTargetTitle());
+        return response;
+    }
+
 
     // 목표 생성 메소드
     @Transactional