[feature] 댓글 생성

src/main/java/org/programmers/signalbuddy/domain/comment/controller/CommentController.java

@@ -1,5 +1,32 @@
 package org.programmers.signalbuddy.domain.comment.controller;
 
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.programmers.signalbuddy.domain.comment.dto.CommentRequest;
+import org.programmers.signalbuddy.domain.comment.service.CommentService;
+import org.springframework.boot.autoconfigure.security.SecurityProperties.User;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+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;
+
+@Tag(name = "Comment API")
+@RestController
+@RequestMapping("/api/comments")
+@RequiredArgsConstructor
 public class CommentController {
 
+    private final CommentService commentService;
+
+    @Operation(summary = "댓글 작성")
+    @PostMapping("/write")
+    public ResponseEntity<Void> writeComment(@RequestBody @Valid CommentRequest request,
+        User user) {    // TODO: 인자값에 User 객체는 나중에 변경해야 함!
+        commentService.writeComment(request, user);
+        return ResponseEntity.status(HttpStatus.CREATED).build();
+    }
 }

src/main/java/org/programmers/signalbuddy/domain/comment/dto/CommentRequest.java

@@ -0,0 +1,17 @@
+package org.programmers.signalbuddy.domain.comment.dto;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class CommentRequest {
+
+    @NotNull(message = "피드백 ID 값은 필수입니다.")
+    private Long feedbackId;
+
+    @NotBlank(message = "댓글 내용은 비어있을 수 없습니다.")
+    private String content;
+}

src/main/java/org/programmers/signalbuddy/domain/comment/entity/Comment.java

@@ -7,22 +7,19 @@
 import jakarta.persistence.Id;
 import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
+import java.util.Objects;
 import lombok.AccessLevel;
-import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
-import lombok.ToString;
 import org.programmers.signalbuddy.domain.basetime.BaseTimeEntity;
+import org.programmers.signalbuddy.domain.comment.dto.CommentRequest;
 import org.programmers.signalbuddy.domain.feedback.entity.Feedback;
 import org.programmers.signalbuddy.domain.member.entity.Member;
 
 @Entity(name = "comments")
 @Getter
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
-@AllArgsConstructor(access = AccessLevel.PRIVATE)
-@Builder
-@ToString
 public class Comment extends BaseTimeEntity {
 
     @Id
@@ -39,4 +36,11 @@ public class Comment extends BaseTimeEntity {
     @ManyToOne
     @JoinColumn(name = "member_id", nullable = false)
     private Member member;
+
+    @Builder(builderMethodName = "creator")
+    private Comment(CommentRequest request, Feedback feedback, Member member) {
+        this.content = Objects.requireNonNull(request.getContent());
+        this.feedback = Objects.requireNonNull(feedback);
+        this.member = Objects.requireNonNull(member);
+    }
 }

src/main/java/org/programmers/signalbuddy/domain/comment/service/CommentService.java

@@ -1,12 +1,43 @@
 package org.programmers.signalbuddy.domain.comment.service;
 
 import lombok.RequiredArgsConstructor;
+import org.programmers.signalbuddy.domain.comment.dto.CommentRequest;
+import org.programmers.signalbuddy.domain.comment.entity.Comment;
 import org.programmers.signalbuddy.domain.comment.repository.CommentRepository;
+import org.programmers.signalbuddy.domain.feedback.entity.Feedback;
+import org.programmers.signalbuddy.domain.feedback.exception.FeedbackErrorCode;
+import org.programmers.signalbuddy.domain.feedback.repository.FeedbackRepository;
+import org.programmers.signalbuddy.domain.member.entity.Member;
+import org.programmers.signalbuddy.domain.member.exception.MemberErrorCode;
+import org.programmers.signalbuddy.domain.member.repository.MemberRepository;
+import org.programmers.signalbuddy.global.exception.BusinessException;
+import org.springframework.boot.autoconfigure.security.SecurityProperties.User;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @Service
 @RequiredArgsConstructor
+@Transactional(readOnly = true)
 public class CommentService {
 
     private final CommentRepository commentRepository;
+    private final MemberRepository memberRepository;
+    private final FeedbackRepository feedbackRepository;
+
+    // TODO: 인자값에 User 객체는 나중에 변경해야 함!
+    @Transactional
+    public void writeComment(CommentRequest request, User user) {
+        Member memeber = memberRepository.findById(Long.parseLong(user.getName()))
+            .orElseThrow(() -> new BusinessException(MemberErrorCode.NOT_FOUND_MEMBER));
+        Feedback feedback = feedbackRepository.findById(request.getFeedbackId())
+            .orElseThrow(() -> new BusinessException(FeedbackErrorCode.NOT_FOUND_FEEDBACK));
+
+        Comment comment = Comment.creator()
+            .request(request)
+            .feedback(feedback)
+            .member(memeber)
+            .build();
+
+        commentRepository.save(comment);
+    }
 }

src/main/java/org/programmers/signalbuddy/domain/feedback/controller/FeedbackController.java

@@ -27,7 +27,7 @@ public class FeedbackController {
     @PostMapping("/write")
     public ResponseEntity<FeedbackResponse> writeFeedback(
         @RequestBody @Valid FeedbackWriteRequest feedbackWriteRequest,
-        User user) {    // 인자값에 User 객체는 나중에 변경해야 함!
+        User user) {    // TODO: 인자값에 User 객체는 나중에 변경해야 함!
         return ResponseEntity.status(HttpStatus.CREATED)
             .body(feedbackService.writeFeedback(feedbackWriteRequest, user));
     }

src/main/java/org/programmers/signalbuddy/domain/feedback/service/FeedbackService.java

@@ -22,7 +22,7 @@ public class FeedbackService {
     private final FeedbackRepository feedbackRepository;
     private final MemberRepository memberRepository;
 
-    // 인자값에 User 객체는 나중에 변경해야 함!
+    // TODO: 인자값에 User 객체는 나중에 변경해야 함!
     @Transactional
     public FeedbackResponse writeFeedback(FeedbackWriteRequest request, User user) {
         Member member = memberRepository.findById(Long.parseLong(user.getName()))

src/test/java/org/programmers/signalbuddy/domain/comment/service/CommentServiceTest.java

@@ -0,0 +1,84 @@
+package org.programmers.signalbuddy.domain.comment.service;
+
+import java.util.Optional;
+import org.assertj.core.api.SoftAssertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.programmers.signalbuddy.domain.comment.dto.CommentRequest;
+import org.programmers.signalbuddy.domain.comment.entity.Comment;
+import org.programmers.signalbuddy.domain.comment.repository.CommentRepository;
+import org.programmers.signalbuddy.domain.feedback.dto.FeedbackWriteRequest;
+import org.programmers.signalbuddy.domain.feedback.entity.Feedback;
+import org.programmers.signalbuddy.domain.feedback.repository.FeedbackRepository;
+import org.programmers.signalbuddy.domain.member.MemberStatus;
+import org.programmers.signalbuddy.domain.member.entity.Member;
+import org.programmers.signalbuddy.domain.member.repository.MemberRepository;
+import org.programmers.signalbuddy.global.support.ServiceTest;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.security.SecurityProperties.User;
+import org.springframework.transaction.annotation.Transactional;
+
+@Transactional
+class CommentServiceTest extends ServiceTest {
+
+    @Autowired
+    private CommentService commentService;
+
+    @Autowired
+    private CommentRepository commentRepository;
+
+    @Autowired
+    private MemberRepository memberRepository;
+
+    @Autowired
+    private FeedbackRepository feedbackRepository;
+
+    private Member member;
+    private Feedback feedback;
+
+    @BeforeEach
+    void setup() {
+        member = Member.builder()
+            .email("[email protected]")
+            .password("123456")
+            .role("USER")
+            .nickname("tester")
+            .memberStatus(MemberStatus.ACTIVITY)
+            .profileImageUrl("https://test-image.com/test-123131")
+            .build();
+        member = memberRepository.save(member);
+
+        String subject = "test subject";
+        String content = "test content";
+        FeedbackWriteRequest request = new FeedbackWriteRequest(subject, content);
+        feedback = feedbackRepository.save(Feedback.create(request, member));
+    }
+
+    @DisplayName("댓글 작성 성공")
+    @Test
+    void writeComment() {
+        // given
+        Long feedbackId = feedback.getFeedbackId();
+        String content = "test comment content";
+        CommentRequest request = new CommentRequest(feedbackId, content);
+        // TODO: User 객체는 나중에 변경해야 함!
+        User user = new User();
+        user.setName(member.getMemberId().toString());
+
+        // when
+        commentService.writeComment(request, user);
+
+        // then
+        Optional<Comment> actual = commentRepository.findById(1L);
+        SoftAssertions.assertSoftly(softAssertions -> {
+            softAssertions.assertThat(actual).get().isNotNull();
+            softAssertions.assertThat(actual.get().getCommentId()).isNotNull();
+            softAssertions.assertThat(actual.get().getContent()).isEqualTo(content);
+            softAssertions.assertThat(actual.get().getMember().getMemberId())
+                .isEqualTo(Long.parseLong(user.getName()));
+            softAssertions.assertThat(actual.get().getFeedback().getFeedbackId())
+                .isEqualTo(feedbackId);
+        });
+    }
+}

src/test/java/org/programmers/signalbuddy/domain/feedback/service/FeedbackServiceTest.java

@@ -14,6 +14,7 @@
 import org.springframework.boot.autoconfigure.security.SecurityProperties.User;
 import org.springframework.transaction.annotation.Transactional;
 
+@Transactional
 class FeedbackServiceTest extends ServiceTest {
 
     @Autowired
@@ -22,9 +23,11 @@ class FeedbackServiceTest extends ServiceTest {
     @Autowired
     private MemberRepository memberRepository;
 
+    private Member member;
+
     @BeforeEach
     void setup() {
-        Member member = Member.builder()
+        member = Member.builder()
             .email("[email protected]")
             .password("123456")
             .role("USER")
@@ -33,27 +36,26 @@ void setup() {
             .profileImageUrl("https://test-image.com/test-123131")
             .build();
 
-        memberRepository.save(member);
+        member = memberRepository.save(member);
     }
 
     @DisplayName("피드백 작성 성공")
     @Test
-    @Transactional
     void writeFeedback() {
         // given
         String subject = "test subject";
         String content = "test content";
         FeedbackWriteRequest request = new FeedbackWriteRequest(subject, content);
-        // User 객체는 나중에 변경해야 함!
+        // TODO: User 객체는 나중에 변경해야 함!
         User user = new User();
-        user.setName("1");
+        user.setName(member.getMemberId().toString());
 
         // when
         FeedbackResponse actual = feedbackService.writeFeedback(request, user);
 
         // then
         SoftAssertions.assertSoftly(softAssertions -> {
-            softAssertions.assertThat(actual.getFeedbackId()).isEqualTo(1L);
+            softAssertions.assertThat(actual.getFeedbackId()).isNotNull();
             softAssertions.assertThat(actual.getSubject()).isEqualTo(subject);
             softAssertions.assertThat(actual.getContent()).isEqualTo(content);
             softAssertions.assertThat(actual.getLikeCount()).isZero();