50. 응답 DTO - user, reply 나머지 만들기 v7

1. 회원정보 수정하기

package shop.mtcoding.blog.user;

import lombok.Data;

public class UserResponse {

    // 회원정보 수정하기
   @Data
    public static class UpdateDTO {
        private int id;
        private String password;
        private String email;

        public UpdateDTO(User user) {
            this.id = user.getId();
            this.password = user.getPassword();
            this.email = user.getEmail();
        }
    }
}

package shop.mtcoding.blog.user;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;

@RequiredArgsConstructor
@RestController
public class UserController {

    private final UserService userService;
    private final HttpSession session;

    @PutMapping("/api/users/{id}")
    public ResponseEntity<?> update(@PathVariable Integer id, @RequestBody UserRequest.UpdateDTO reqDTO) {
        User sessionUser = (User) session.getAttribute("sessionUser");
        User newSessionUser = userService.update(sessionUser.getId(), reqDTO);
        session.setAttribute("sessionUser", newSessionUser);

        // 이 친구만 DTO 생성위치 예외
        UserResponse.UpdateDTO respDTO = new UserResponse.UpdateDTO(sessionUser);
        return ResponseEntity.ok(new ApiUtil(respDTO));
    }
}

package shop.mtcoding.blog.user;

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import shop.mtcoding.blog._core.errors.exception.Exception400;
import shop.mtcoding.blog._core.errors.exception.Exception401;
import shop.mtcoding.blog._core.errors.exception.Exception404;

import java.util.Optional;

@RequiredArgsConstructor
@Service // IoC 등록
public class UserService {

    private final BoardJPARepository boardJPARepository;

    @Transactional
    public User update(int id, UserRequest.UpdateDTO reqDTO){
        User user = userJPARepository.findById(id)
                .orElseThrow(() -> new Exception404("회원정보를 찾을 수 없습니다"));

        user.setPassword(reqDTO.getPassword());
        user.setEmail(reqDTO.getEmail());
        return user;
    
}

2. 댓글 쓰기

package shop.mtcoding.blog.reply;

import lombok.Data;

public class ReplyResponse {

    @Data
    public static class SaveDTO {
        private Integer id;
        private Integer boardId;
        private String comment;

        public SaveDTO(Reply reply) {
            this.id = reply.getId();
            this.boardId = reply.getBoard().getId();
            this.comment = reply.getComment();
        }
    }
}

package shop.mtcoding.blog.reply;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;
import shop.mtcoding.blog.user.User;
import shop.mtcoding.blog.user.UserResponse;

@RequiredArgsConstructor
@RestController
public class ReplyController {
    private final ReplyService replyService;
    private final HttpSession session;

    @PostMapping("/api/replies")
    public ResponseEntity<?> save(@RequestBody ReplyRequest.SaveDTO reqDTO){
        User sessionUser = (User) session.getAttribute("sessionUser");
        ReplyResponse.SaveDTO respDTO = replyService.save(reqDTO, sessionUser);
        return ResponseEntity.ok(new ApiUtil(respDTO));
    }
}

package shop.mtcoding.blog.reply;

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import shop.mtcoding.blog._core.errors.exception.Exception401;
import shop.mtcoding.blog._core.errors.exception.Exception403;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.board.Board;
import shop.mtcoding.blog.board.BoardJPARepository;
import shop.mtcoding.blog.user.User;
import shop.mtcoding.blog.user.UserResponse;

@RequiredArgsConstructor
@Service
public class ReplyService {
    private final BoardJPARepository boardJPARepository;
    private final ReplyJPARepository replyJPARepository;

    @Transactional
    public ReplyResponse.SaveDTO save(ReplyRequest.SaveDTO reqDTO, User sessionUser) {
        Board board = boardJPARepository.findById(reqDTO.getBoardId())
                        .orElseThrow(() -> new Exception404("없는 게시글에 댓글을 작성할 수 없어요"));

        Reply reply = reqDTO.toEntity(sessionUser, board);

        replyJPARepository.save(reply);
        return new ReplyResponse.SaveDTO(reply);
    }
}

3. 댓글 삭제하기

package shop.mtcoding.blog.reply;

import lombok.Data;

public class ReplyResponse {

    @Data
    public static class DeleteDTO {
        private Integer id;
        private Integer boardId;
        private String comment;

        public DeleteDTO(Reply reply) {
            this.id = reply.getId();
            this.boardId = reply.getBoard().getId();
            this.comment = reply.getComment();
        }
    }
}

package shop.mtcoding.blog.reply;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;
import shop.mtcoding.blog.user.User;
import shop.mtcoding.blog.user.UserResponse;

@RequiredArgsConstructor
@RestController
public class ReplyController {
    private final ReplyService replyService;
    private final HttpSession session;

    @DeleteMapping("/api/replies/{id}")
    public ResponseEntity<?> delete(@PathVariable Integer id){
        User sessionUser = (User) session.getAttribute("sessionUser");
        replyService.delete(id, sessionUser.getId());
        return ResponseEntity.ok(new ApiUtil(null));
    }
}

package shop.mtcoding.blog.reply;

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import shop.mtcoding.blog._core.errors.exception.Exception401;
import shop.mtcoding.blog._core.errors.exception.Exception403;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.board.Board;
import shop.mtcoding.blog.board.BoardJPARepository;
import shop.mtcoding.blog.user.User;
import shop.mtcoding.blog.user.UserResponse;

@RequiredArgsConstructor
@Service
public class ReplyService {
    private final BoardJPARepository boardJPARepository;
    private final ReplyJPARepository replyJPARepository;

    @Transactional
    public ReplyResponse.DeleteDTO delete(int replyId, int sessionUserId) {
        Reply reply = replyJPARepository.findById(replyId)
                        .orElseThrow(() -> new Exception404("없는 댓글을 삭제할 수 없어요"));

        if(reply.getUser().getId() != sessionUserId){
            throw new Exception403("댓글을 삭제할 권한이 없어요");
        }
        replyJPARepository.deleteById(replyId);
        return new ReplyResponse.DeleteDTO(reply);
    }
}