[BE] 작성한 체크리스트 조회 API를 리팩토링한다.

backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/CategoryPriorityCreateRequest.java → backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/request/CategoryPriorityCreateRequest.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.category.dto;
+package com.bang_ggood.category.dto.request;
 
 import java.util.List;
 

backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/CategoriesReadResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/response/CategoriesReadResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.category.dto;
+package com.bang_ggood.category.dto.response;
 
 import java.util.List;
 

backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/CategoryQuestionsResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/response/CategoryQuestionsResponse.java

@@ -1,6 +1,7 @@
-package com.bang_ggood.category.dto;
+package com.bang_ggood.category.dto.response;
+
+import com.bang_ggood.checklist.dto.response.QuestionResponse;
 
-import com.bang_ggood.checklist.dto.QuestionResponse;
 import java.util.List;
 
 public record CategoryQuestionsResponse(Integer categoryId, String categoryName, List<QuestionResponse> questions) {

backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/CategoryReadResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/response/CategoryReadResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.category.dto;
+package com.bang_ggood.category.dto.response;
 
 import com.bang_ggood.category.domain.Category;
 

backend/bang-ggood/src/main/java/com/bang_ggood/category/dto/response/WrittenCategoryQuestionsResponse.java

@@ -0,0 +1,18 @@
+package com.bang_ggood.category.dto.response;
+
+import com.bang_ggood.category.domain.Category;
+import com.bang_ggood.checklist.dto.response.WrittenQuestionResponse;
+
+import java.util.List;
+
+public record WrittenCategoryQuestionsResponse(Integer categoryId, String categoryName,
+                                               List<WrittenQuestionResponse> questions) {
+
+    public static WrittenCategoryQuestionsResponse of(Category category, List<WrittenQuestionResponse> questions) {
+        return new WrittenCategoryQuestionsResponse(
+                category.getId(),
+                category.getName(),
+                questions
+        );
+    }
+}

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/controller/ChecklistController.java

@@ -0,0 +1,23 @@
+package com.bang_ggood.checklist.controller;
+
+import com.bang_ggood.checklist.dto.response.WrittenChecklistResponse;
+import com.bang_ggood.checklist.service.ChecklistService;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ChecklistController {
+
+    private final ChecklistService checklistService;
+
+    public ChecklistController(ChecklistService checklistService) {
+        this.checklistService = checklistService;
+    }
+
+    @GetMapping("/checklists/{id}")
+    public ResponseEntity<WrittenChecklistResponse> readChecklistById(@PathVariable long id) {
+        return ResponseEntity.ok(checklistService.readChecklistById(id));
+    }
+}

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/ChecklistCreateRequest.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/request/ChecklistCreateRequest.java

@@ -1,8 +1,9 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.request;
 
 import com.bang_ggood.room.domain.Room;
-import com.bang_ggood.room.dto.RoomCreateRequest;
+import com.bang_ggood.room.dto.request.RoomCreateRequest;
 import jakarta.validation.Valid;
+
 import java.util.List;
 
 public record ChecklistCreateRequest(@Valid RoomCreateRequest room, List<Integer> options,

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/ChecklistInfo.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/request/ChecklistInfo.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.request;
 
 public record ChecklistInfo(Integer deposit, Integer rent, Integer contractTerm, String realEstate) {
 }

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/QuestionCreateRequest.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/request/QuestionCreateRequest.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.request;
 
 import jakarta.validation.constraints.NotNull;
 

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/BadgeResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/BadgeResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 import com.bang_ggood.category.domain.Badge;
 

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/CategoryScoreReadResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/CategoryScoreReadResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 public record CategoryScoreReadResponse(
         Integer categoryId, String categoryName, Integer score

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/ChecklistComparisonReadResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/ChecklistComparisonReadResponse.java

@@ -1,6 +1,7 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 import com.bang_ggood.checklist.domain.Checklist;
+
 import java.util.List;
 
 public record ChecklistComparisonReadResponse(

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/ChecklistQuestionsResponse.java

@@ -0,0 +1,8 @@
+package com.bang_ggood.checklist.dto.response;
+
+import com.bang_ggood.category.dto.response.CategoryQuestionsResponse;
+
+import java.util.List;
+
+public record ChecklistQuestionsResponse(List<CategoryQuestionsResponse> categories) {
+}

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/ChecklistsComparisonReadResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/ChecklistsComparisonReadResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 import java.util.List;
 

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/QuestionResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/QuestionResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 public record QuestionResponse(Integer questionId, String title, String subtitle) {
 }

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/UserChecklistPreviewResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/UserChecklistPreviewResponse.java

@@ -1,6 +1,7 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 import com.bang_ggood.checklist.domain.Checklist;
+
 import java.time.LocalDateTime;
 import java.util.List;
 

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/UserChecklistsPreviewResponse.java → backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/UserChecklistsPreviewResponse.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.checklist.dto;
+package com.bang_ggood.checklist.dto.response;
 
 import java.util.List;
 

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/WrittenChecklistResponse.java

@@ -0,0 +1,10 @@
+package com.bang_ggood.checklist.dto.response;
+
+import com.bang_ggood.category.dto.response.WrittenCategoryQuestionsResponse;
+import com.bang_ggood.room.dto.response.WrittenRoomResponse;
+
+import java.util.List;
+
+public record WrittenChecklistResponse(WrittenRoomResponse room, List<Integer> options,
+                                       List<WrittenCategoryQuestionsResponse> categories) {
+}

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/dto/response/WrittenQuestionResponse.java

@@ -0,0 +1,15 @@
+package com.bang_ggood.checklist.dto.response;
+
+import com.bang_ggood.checklist.domain.ChecklistQuestion;
+
+public record WrittenQuestionResponse(Integer questionId, String title, String subtitle, String answer) {
+
+    public static WrittenQuestionResponse of(ChecklistQuestion checklistQuestion) {
+        return new WrittenQuestionResponse(
+                checklistQuestion.getQuestion().getId(),
+                checklistQuestion.getQuestion().getTitle(),
+                checklistQuestion.getQuestion().getSubtitle(),
+                checklistQuestion.getGrade().name()
+        );
+    }
+}

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/repository/ChecklistRepository.java

@@ -21,7 +21,7 @@ public interface ChecklistRepository extends JpaRepository<Checklist, Long> {
     Optional<Checklist> findById(long id);
 
     default Checklist getById(long id) {
-        return findById(id).orElseThrow(() -> new BangggoodException(ExceptionCode.USER_NOT_FOUND));
+        return findById(id).orElseThrow(() -> new BangggoodException(ExceptionCode.CHECKLIST_NOT_FOUND));
     }
 
     List<Checklist> findByUser(User user);

backend/bang-ggood/src/main/java/com/bang_ggood/checklist/service/ChecklistService.java

@@ -0,0 +1,76 @@
+package com.bang_ggood.checklist.service;
+
+import com.bang_ggood.category.domain.Category;
+import com.bang_ggood.category.dto.response.WrittenCategoryQuestionsResponse;
+import com.bang_ggood.checklist.domain.Checklist;
+import com.bang_ggood.checklist.domain.ChecklistOption;
+import com.bang_ggood.checklist.domain.ChecklistQuestion;
+import com.bang_ggood.checklist.domain.Question;
+import com.bang_ggood.checklist.dto.response.WrittenChecklistResponse;
+import com.bang_ggood.checklist.dto.response.WrittenQuestionResponse;
+import com.bang_ggood.checklist.repository.ChecklistOptionRepository;
+import com.bang_ggood.checklist.repository.ChecklistQuestionRepository;
+import com.bang_ggood.checklist.repository.ChecklistRepository;
+import com.bang_ggood.room.dto.response.WrittenRoomResponse;
+import com.bang_ggood.room.repository.RoomRepository;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+public class ChecklistService {
+
+    private final ChecklistRepository checklistRepository;
+    private final RoomRepository roomRepository;
+    private final ChecklistOptionRepository checklistOptionRepository;
+    private final ChecklistQuestionRepository checklistQuestionRepository;
+
+    public ChecklistService(ChecklistRepository checklistRepository, RoomRepository roomRepository,
+                            ChecklistOptionRepository checklistOptionRepository,
+                            ChecklistQuestionRepository checklistQuestionRepository) {
+        this.checklistRepository = checklistRepository;
+        this.roomRepository = roomRepository;
+        this.checklistOptionRepository = checklistOptionRepository;
+        this.checklistQuestionRepository = checklistQuestionRepository;
+    }
+
+    @Transactional
+    public WrittenChecklistResponse readChecklistById(long id) {
+        Checklist checklist = checklistRepository.getById(id);
+        WrittenRoomResponse writtenRoomResponse = WrittenRoomResponse.of(checklist);
+
+        List<Integer> optionIds = readOptionsByChecklistId(id);
+
+        List<WrittenCategoryQuestionsResponse> writtenCategoryQuestionsResponses =
+                readCategoryQuestionsByChecklistId(id);
+
+        return new WrittenChecklistResponse(writtenRoomResponse, optionIds, writtenCategoryQuestionsResponses);
+    }
+
+    private List<Integer> readOptionsByChecklistId(long checklistId) {
+        return checklistOptionRepository.findByChecklistId(checklistId)
+                .stream()
+                .map(ChecklistOption::getOptionId)
+                .toList();
+    }
+
+    private List<WrittenCategoryQuestionsResponse> readCategoryQuestionsByChecklistId(long checklistId) {
+        List<ChecklistQuestion> checklistQuestions = checklistQuestionRepository.findByChecklistId(checklistId);
+        return Arrays.stream(Category.values())
+                .map(category -> readQuestionsByCategory(category, checklistQuestions))
+                .collect(Collectors.toList());
+    }
+
+    private WrittenCategoryQuestionsResponse readQuestionsByCategory(Category category,
+                                                                     List<ChecklistQuestion> checklistQuestions) {
+        List<WrittenQuestionResponse> writtenQuestionResponses =
+                Question.filter(category, checklistQuestions).stream()
+                        .map(WrittenQuestionResponse::of)
+                        .collect(Collectors.toList());
+
+        return WrittenCategoryQuestionsResponse.of(category, writtenQuestionResponses);
+    }
+}

backend/bang-ggood/src/main/java/com/bang_ggood/room/dto/RoomCreateRequest.java → backend/bang-ggood/src/main/java/com/bang_ggood/room/dto/request/RoomCreateRequest.java

@@ -1,4 +1,4 @@
-package com.bang_ggood.room.dto;
+package com.bang_ggood.room.dto.request;
 
 import com.bang_ggood.room.domain.Room;
 import jakarta.validation.constraints.NotNull;

backend/bang-ggood/src/main/java/com/bang_ggood/room/dto/response/WrittenRoomResponse.java

@@ -0,0 +1,13 @@
+package com.bang_ggood.room.dto.response;
+
+import com.bang_ggood.checklist.domain.Checklist;
+
+public record WrittenRoomResponse(String name, Integer deposit, Integer rent, Integer contractTerm, Integer floor,
+                                  String address, String station, Integer walkingTime, String realEstate) {
+
+    public static WrittenRoomResponse of(Checklist checklist) {
+        return new WrittenRoomResponse(checklist.getRoomName(), checklist.getDeposit(), checklist.getRent(),
+                checklist.getContractTerm(), checklist.getRoomFloor(), checklist.getRoomAddress(),
+                checklist.getRoomStation(), checklist.getRoomWalkingTime(), checklist.getRealEstate());
+    }
+}

backend/bang-ggood/src/main/resources/schema.sql

@@ -4,6 +4,7 @@ DROP TABLE IF EXISTS checklist_option CASCADE;
 DROP TABLE IF EXISTS checklist_question CASCADE;
 DROP TABLE IF EXISTS room CASCADE;
 DROP TABLE IF EXISTS users CASCADE;
+DROP TABLE IF EXISTS test_entity CASCADE;
 
 -- Create tables
 CREATE TABLE room
@@ -54,16 +55,15 @@ CREATE TABLE checklist_option
 CREATE TABLE checklist_question
 (
     id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
-    question_id  INTEGER NOT NULL,
+    question  VARCHAR(255) NOT NULL,
     checklist_id BIGINT  NOT NULL,
     created_at   TIMESTAMP(6),
     modified_at  TIMESTAMP(6),
-    answer       VARCHAR(255),
+    grade       VARCHAR(255),
     FOREIGN KEY (checklist_id) REFERENCES checklist (id)
 );
 
-
-CREATE TABLE category_priority
+CREATE TABLE if not exists category_priority
 (
     id  bigint  generated by default as identity,
     category_id INTEGER not null,
@@ -72,4 +72,14 @@ CREATE TABLE category_priority
     modified_at TIMESTAMP not null,
     primary key (id),
     foreign key (user_id) references users
-);
+    );
+
+
+CREATE TABLE test_entity
+(
+    id bigint  generated by default as identity,
+    name varchar(255) not null,
+    created_at TIMESTAMP not null,
+    modified_at TIMESTAMP not null,
+    primary key (id)
+);