회고 작성 시 보관함 내 목표 리마인드 기능 추가 (#58)

* feat: 보관함 목표 리마인드 기능 개발

src/main/java/com/backend/goal/application/GoalService.java

@@ -7,6 +7,7 @@
 import com.backend.goal.domain.*;
 import com.backend.goal.application.dto.response.GoalResponse;
 import com.backend.goal.domain.enums.GoalStatus;
+import com.backend.goal.domain.enums.RewardType;
 import com.backend.goal.domain.event.RemoveRelatedDetailGoalEvent;
 import com.backend.goal.domain.repository.GoalListResponseDto;
 import com.backend.goal.domain.repository.GoalQueryRepository;
@@ -22,16 +23,20 @@
 import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDate;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
-
+import java.util.Random;
+import java.util.stream.Collectors;
 
 
 @Service
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
 public class GoalService {
 
+    private static final int RANDOM_GOAL_COUNT = 3;
+
     private final GoalRepository goalRepository;
 
     private final GoalQueryRepository goalQueryRepository;
@@ -92,4 +97,27 @@ public void recoverGoal(Long goalId, GoalRecoverRequest goalRecoverRequest)
         Goal goal = goalRepository.getByIdAndIsDeletedFalse(goalId);
         goal.recover(goalRecoverRequest.startDate(), goalRecoverRequest.endDate(), goalRecoverRequest.reminderEnabled());
     }
+
+    public List<GoalListResponseDto> getStoredGoalList() {
+
+        List<Goal> storedGoalList = goalRepository.getGoalsByGoalStatusAndIsDeletedFalse(GoalStatus.STORE);
+
+        Random random = new Random();
+
+        List<Goal> randomStoredGoalList = new ArrayList<>();
+
+        int goalCount = Math.min(storedGoalList.size(), RANDOM_GOAL_COUNT);
+
+        while (randomStoredGoalList.size() < goalCount) {
+
+            int index = random.nextInt(storedGoalList.size());
+            Goal goal = storedGoalList.get(index);
+
+            if (!randomStoredGoalList.contains(goal)) {
+                randomStoredGoalList.add(goal);
+            }
+        }
+
+        return randomStoredGoalList.stream().map(GoalListResponseDto::from).collect(Collectors.toList());
+    }
 }

src/main/java/com/backend/goal/domain/repository/GoalRepository.java

@@ -20,4 +20,6 @@ default Goal getByIdAndIsDeletedFalse(Long id){
     int countByGoalStatusAndIsDeletedFalse(GoalStatus goalStatus);
 
     List<Goal> getGoalsByGoalStatusAndIsDeletedFalse(GoalStatus goalStatus);
+
+
 }

src/main/java/com/backend/goal/presentation/GoalController.java

@@ -6,6 +6,7 @@
 import com.backend.goal.application.dto.response.GoalListResponse;
 import com.backend.goal.application.dto.response.GoalResponse;
 import com.backend.goal.application.dto.response.RetrospectEnabledGoalCountResponse;
+import com.backend.goal.domain.repository.GoalListResponseDto;
 import com.backend.goal.presentation.dto.GoalRecoverRequest;
 import com.backend.goal.presentation.dto.GoalSaveRequest;
 import com.backend.goal.presentation.dto.GoalUpdateRequest;
@@ -20,6 +21,8 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 import static com.backend.global.common.code.SuccessCode.*;
 
 @RestController
@@ -41,7 +44,7 @@ public ResponseEntity<CustomResponse<GoalListResponse>> getGoalList(
         return CustomResponse.success(SELECT_SUCCESS,goalService.getGoalList(lastId,pageable,goalStatus));
     }
 
-    
+
     @Operation(summary = "상위 목표 상태별 개수 조회", description = "상위 목표 상태별 개수를 조회하는 API 입니다.")
     @ApiResponse(responseCode = "200", description = "code : 200, message : SELECT_SUCCESS")
     @GetMapping("/count")
@@ -58,6 +61,14 @@ public ResponseEntity<CustomResponse<RetrospectEnabledGoalCountResponse>> getRet
         return CustomResponse.success(SELECT_SUCCESS,goalService.getGoalCountRetrospectEnabled());
     }
 
+    @Operation(summary = "회고 완료 후 보관함 내 목표 추천", description = "보관함에 들어있는 목표들 중 랜덤하게 3개를 추천해줍니다")
+    @ApiResponse(responseCode = "200", description = "code : 200, message : SELECT_SUCCESS")
+    @GetMapping("/stored-goals")
+    public ResponseEntity<CustomResponse<List<GoalListResponseDto>>> getStoredGoalList()
+    {
+        return CustomResponse.success(SELECT_SUCCESS,goalService.getStoredGoalList());
+    }
+
 
     @Operation(summary = "상위 목표 삭제", description = "상위 목표를 삭제하는 API 입니다.")
     @ApiResponse(responseCode = "200", description = "code : 200, message : DELETE_SUCCESS")