feat: 질문 추가 기능 구현

backend/src/main/java/in/backend/core/question/application/QuestionSaveCommand.java

@@ -0,0 +1,12 @@
+package in.backend.core.question.application;
+
+import in.backend.global.entity.ActionType;
+
+public record QuestionSaveCommand(
+        ActionType action,
+        Long questionId,
+        Long questionSetId,
+        Integer sequence,
+        String question
+) {
+}

backend/src/main/java/in/backend/core/question/application/QuestionService.java

@@ -0,0 +1,21 @@
+package in.backend.core.question.application;
+
+
+import in.backend.core.question.application.QuestionWriter.QuestionInfo;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class QuestionService {
+    private final QuestionWriter questionWriter;
+
+    public Long save(QuestionSaveCommand command) {
+        return switch (command.action()) {
+            case CREATE -> questionWriter.write(new QuestionInfo(command));
+            case UPDATE -> questionWriter.write(command.questionId(), new QuestionInfo(command));
+            case DELETE -> throw new UnsupportedOperationException();
+        };
+    }
+
+}

backend/src/main/java/in/backend/core/question/application/QuestionWriter.java

@@ -15,25 +15,31 @@ public class QuestionWriter {
     private final QuestionReader questionReader;
 
 
-    public Long execute(QuestionInfo questionInfo) {
-        return questionRepository.save(questionInfo.toEntity()).getId();
+    public Long write(QuestionInfo questionInfo) {
+        return questionRepository.save(questionInfo.toEntity())
+                .getId();
     }
 
-    public void update(Long questionId, QuestionInfo questionInfo) {
+    public Long write(Long questionId, QuestionInfo questionInfo) {
         var question = questionReader.read(questionId);
 
         question.update(questionInfo);
+
+        return question.getId();
     }
 
     public record QuestionInfo(
             String content,
-            String referenceLinks,
             int sequence
     ) {
+
+        public QuestionInfo(QuestionSaveCommand command) {
+            this(command.question(), command.sequence());
+        }
+
         public QuestionEntity toEntity() {
             return QuestionEntity.builder()
                     .content(content)
-                    .referenceLinks(referenceLinks)
                     .sequence(sequence)
                     .build();
         }

backend/src/main/java/in/backend/core/question/entity/QuestionEntity.java

@@ -66,7 +66,6 @@ public QuestionEntity(
 
     public void update(QuestionInfo questionInfo) {
         applyIfPresent(questionInfo.content(), value -> this.content = value);
-        applyIfPresent(questionInfo.referenceLinks(), value -> this.referenceLinks = value);
         applyIfPresent(questionInfo.sequence(), value -> this.sequence = value);
     }
 

backend/src/main/java/in/backend/core/question/presentation/QuestionApi.java

@@ -0,0 +1,26 @@
+package in.backend.core.question.presentation;
+
+
+import in.backend.core.auth.domain.Visitor;
+import in.backend.core.auth.domain.attributes.Auth;
+import in.backend.core.question.presentation.payload.QuestionSaveRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/questions")
+public class QuestionApi {
+
+
+    @PostMapping
+    public void save(
+            @RequestBody QuestionSaveRequest questionSaveRequest,
+            @Auth Visitor visitor
+    ) {
+
+    }
+}

backend/src/main/java/in/backend/core/question/presentation/payload/QuestionDetailResponse.java

@@ -0,0 +1,9 @@
+package in.backend.core.question.presentation.payload;
+
+public record QuestionDetailResponse(
+        Long questionId,
+        Long questionSetId,
+        String question,
+        Integer sequence
+) {
+}

backend/src/main/java/in/backend/core/question/presentation/payload/QuestionSaveRequest.java

@@ -0,0 +1,12 @@
+package in.backend.core.question.presentation.payload;
+
+import in.backend.global.entity.ActionType;
+
+public record QuestionSaveRequest(
+        ActionType action,
+        Long questionId,
+        Long questionSetId,
+        Integer sequence,
+        String question
+) {
+}

backend/src/main/java/in/backend/global/entity/ActionType.java

@@ -0,0 +1,7 @@
+package in.backend.global.entity;
+
+public enum ActionType {
+    CREATE,
+    UPDATE,
+    DELETE
+}