refactor: comment dto 분리 (#5)

src/main/java/com/api/TaveShot/domain/Comment/dto/CommentCreateRequest.java

@@ -0,0 +1,15 @@
+package com.api.TaveShot.domain.Comment.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+@Builder
+public class CommentCreateRequest {
+    private final String comment;
+    private final String memberId;
+    private final Long postId;
+    private final Long parentCommentId;
+}

src/main/java/com/api/TaveShot/domain/Comment/dto/CommentResponse.java

@@ -0,0 +1,43 @@
+package com.api.TaveShot.domain.Comment.dto;
+
+import com.api.TaveShot.domain.Comment.domain.Comment;
+import com.querydsl.core.annotations.QueryProjection;
+import lombok.Getter;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Getter
+public class CommentResponse {
+    private final Long id;
+    private final String comment;
+    private final String memberId;
+    private final Long postId;
+    private final CommentResponse parentComment;
+    private final List<CommentResponse> replies;
+
+    @QueryProjection
+    public CommentResponse(Long id, String comment, String memberId, Long postId, CommentResponse parentComment, List<CommentResponse> replies) {
+        this.id = id;
+        this.comment = comment;
+        this.memberId = memberId;
+        this.postId = postId;
+        this.parentComment = parentComment;
+        this.replies = replies;
+    }
+
+    public static CommentResponse fromEntity(Comment commentEntity) {
+        List<CommentResponse> replies = commentEntity.getChildComments().stream()
+                .map(CommentResponse::fromEntity)
+                .collect(Collectors.toList());
+
+        return new CommentResponse(
+                commentEntity.getId(),
+                commentEntity.getComment(),
+                commentEntity.getMember().getGitName(),
+                commentEntity.getPost().getId(),
+                commentEntity.getParentComment() != null ? fromEntity(commentEntity.getParentComment()) : null,
+                replies
+        );
+    }
+}

src/main/java/com/api/TaveShot/domain/Comment/dto/CommentUpdateRequest.java

@@ -0,0 +1,12 @@
+package com.api.TaveShot.domain.Comment.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+@Builder
+public class CommentUpdateRequest {
+    private final String comment;
+}