[Practice] 게시판 API 만들기 (12)

1. 문제

• 게시글에 대한 좋아요한 내용을 취소하는 API

 

 

 

2. 풀이

- BoardLikeRepository.java

package com.example.jpa.sample.board.repository;

import com.example.jpa.sample.board.entity.Board;
import com.example.jpa.sample.board.entity.BoardLike;
import com.example.jpa.sample.user.entity.User;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.Optional;

public interface BoardLikeRepository extends JpaRepository<BoardLike, Long> {

    long countByBoardAndUser(Board board, User user);

    Optional<BoardLike> findByBoardAndUser(Board board, User user);
}

- BoardService.java

package com.example.jpa.sample.board.service;

import com.example.jpa.sample.board.entity.BoardType;
import com.example.jpa.sample.board.model.*;

import java.util.List;

public interface BoardService {

    ServiceResult addBoard(BoardTypeInput boardTypeInput);

    ServiceResult updateBoard(Long id, BoardTypeInput boardTypeInput);

    ServiceResult deleteBoard(Long id);

    List<BoardType> getAllBoardType();

    ServiceResult setBoardTypeUsing(Long id, BoardTypeUsing boardTypeUsing);

    List<BoardTypeCount> getBoardTypeCount();

    ServiceResult setBoardTop(Long id, boolean topYn);

    ServiceResult setBoardPeriod(Long id, BoardPeriod boardPeriod);

    ServiceResult setBoardHits(Long id, String email);

    ServiceResult setBoardLike(Long id, String email);

    ServiceResult setBoardUnLike(Long id, String email);
}

- BoardServiceImpl.java

package com.example.jpa.sample.board.service;

import com.example.jpa.sample.board.entity.Board;
import com.example.jpa.sample.board.entity.BoardHits;
import com.example.jpa.sample.board.entity.BoardLike;
import com.example.jpa.sample.board.entity.BoardType;
import com.example.jpa.sample.board.model.*;
import com.example.jpa.sample.board.repository.*;
import com.example.jpa.sample.user.entity.User;
import com.example.jpa.sample.user.repository.UserRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;
import java.util.Optional;

@RequiredArgsConstructor
@Service
public class BoardServiceImpl implements BoardService {

    private final BoardTypeRepository boardTypeRepository;
    private final BoardRepository boardRepository;
    private final BoardTypeCustomRepository boardTypeCustomRepository;
    private final BoardHitsRepository boardHitsRepository;
    private final BoardLikeRepository boardLikeRepository;

    private final UserRepository userRepository;

    @Override
    public ServiceResult addBoard(BoardTypeInput boardTypeInput) {
        BoardType boardType = boardTypeRepository.findByBoardName(boardTypeInput.getName());

        if(boardType != null && boardTypeInput.getName().equals(boardType.getBoardName())) { // 동일한 게시판 제목이 있을 경우
            return ServiceResult.fail("이미 동일한 게시판이 존재합니다.");
        }

        BoardType addBoardType = BoardType.builder()
                .boardName(boardTypeInput.getName())
                .regDate(LocalDateTime.now())
                .build();

        boardTypeRepository.save(addBoardType);

        return ServiceResult.success();
    }

    @Override
    public ServiceResult updateBoard(Long id, BoardTypeInput boardTypeInput) {
        Optional<BoardType> optionalBoardType = boardTypeRepository.findById(id);
        if(!optionalBoardType.isPresent()) {
            return ServiceResult.fail("수정할 게시판 타입이 없습니다.");
        }

        BoardType boardType = optionalBoardType.get();

        if(boardTypeInput.getName().equals(boardType.getBoardName())) { // 동일한 게시판 제목이 있을 경우
            return ServiceResult.fail("수정할 이름이 동일한 게시판명 입니다.");
        }

        boardType.setBoardName(boardTypeInput.getName());
        boardType.setUpdateDate(LocalDateTime.now());
        boardTypeRepository.save(boardType);

        return ServiceResult.success();
    }

    @Override
    public ServiceResult deleteBoard(Long id) {
        Optional<BoardType> optionalBoardType = boardTypeRepository.findById(id);
        if(!optionalBoardType.isPresent()) {
            return ServiceResult.fail("삭제할 게시판 타입이 없습니다.");
        }

        BoardType boardType = optionalBoardType.get();
        if(boardRepository.countByBoardType(boardType) > 0) {
            return ServiceResult.fail("삭제할 게시판 타입의 게시글이 존재합니다.");
        }

        boardTypeRepository.delete(boardType);

        return ServiceResult.success();
    }

    @Override
    public List<BoardType> getAllBoardType() {

        return boardTypeRepository.findAll();
    }

    @Override
    public ServiceResult setBoardTypeUsing(Long id, BoardTypeUsing boardTypeUsing) {

        Optional<BoardType> optionalBoardType = boardTypeRepository.findById(id);
        if(!optionalBoardType.isPresent()) {
            return ServiceResult.fail("삭제할 게시판 타입이 없습니다.");
        }

        BoardType boardType = optionalBoardType.get();

        boardType.setUsingYn(boardTypeUsing.isUsingYn());
        boardTypeRepository.save(boardType);

        return ServiceResult.success();

    }

    @Override
    public List<BoardTypeCount> getBoardTypeCount() {
        return boardTypeCustomRepository.getBoardTypeCount();
    }

    @Override
    public ServiceResult setBoardTop(Long id, boolean topYn) {

        Optional<Board> optionalBoard = boardRepository.findById(id);
        if(!optionalBoard.isPresent()) {
            return ServiceResult.fail("게시글이 존재하지 않습니다.");
        }

        Board board = optionalBoard.get();
        if(board.isTopYn() == topYn) {
            if(topYn) return ServiceResult.fail("이미 게시글이 최상단에 배체되어 있습니다.");
            else return ServiceResult.fail("이미 게시글이 최상단에 해제되어 있습니다.");
        }

        board.setTopYn(topYn);
        boardRepository.save(board);

        return ServiceResult.success();
    }

    @Override
    public ServiceResult setBoardPeriod(Long id, BoardPeriod boardPeriod) {
        Optional<Board> optionalBoard = boardRepository.findById(id);
        if(!optionalBoard.isPresent()) {
            return ServiceResult.fail("게시글이 존재하지 않습니다.");
        }

        Board board = optionalBoard.get();
        board.setPublishStartDate(boardPeriod.getStartDate());
        board.setPublishEndDate(boardPeriod.getEndDate());

        boardRepository.save(board);

        return ServiceResult.success();
    }

    @Override
    public ServiceResult setBoardHits(Long id, String email) {
        Optional<Board> optionalBoard = boardRepository.findById(id);
        if(!optionalBoard.isPresent()) {
            return ServiceResult.fail("게시글이 존재하지 않습니다.");
        }
        Board board = optionalBoard.get();

        Optional<User> optionalUser = userRepository.findByEmail(email);
        if(!optionalUser.isPresent()) {
            return ServiceResult.fail("회원 정보가 존재하지 않습니다.");
        }
        User user = optionalUser.get();

        if(boardHitsRepository.countByBoardAndUser(board, user) > 0) {
            return ServiceResult.fail("이미 조회수가 있습니다.");
        }

        boardHitsRepository.save(BoardHits.builder()
                .board(board)
                .user(user)
                .regDate(LocalDateTime.now())
                .build());

        return ServiceResult.success();
    }

    @Override
    public ServiceResult setBoardLike(Long id, String email) {
        Optional<Board> optionalBoard = boardRepository.findById(id);
        if(!optionalBoard.isPresent()) {
            return ServiceResult.fail("게시글이 존재하지 않습니다.");
        }
        Board board = optionalBoard.get();

        Optional<User> optionalUser = userRepository.findByEmail(email);
        if(!optionalUser.isPresent()) {
            return ServiceResult.fail("회원 정보가 존재하지 않습니다.");
        }
        User user = optionalUser.get();

        long boardLikeCount = boardLikeRepository.countByBoardAndUser(board, user);
        if(boardLikeCount > 0) {
            return ServiceResult.fail("이미 좋아요한 내용이 있습니다.");
        }

        boardLikeRepository.save(BoardLike.builder()
                .board(board)
                .user(user)
                .regDate(LocalDateTime.now())
                .build());

        return ServiceResult.success();
    }

    @Override
    public ServiceResult setBoardUnLike(Long id, String email) {
        Optional<Board> optionalBoard = boardRepository.findById(id);
        if(!optionalBoard.isPresent()) {
            return ServiceResult.fail("게시글이 존재하지 않습니다.");
        }
        Board board = optionalBoard.get();

        Optional<User> optionalUser = userRepository.findByEmail(email);
        if(!optionalUser.isPresent()) {
            return ServiceResult.fail("회원 정보가 존재하지 않습니다.");
        }
        User user = optionalUser.get();

        Optional<BoardLike> optionalBoardLike = boardLikeRepository.findByBoardAndUser(board, user);
        if(!optionalBoardLike.isPresent()) {
            return ServiceResult.fail("좋아요한 내용이 없습니다.");
        }
        BoardLike boardLike = optionalBoardLike.get();

        boardLikeRepository.delete(boardLike);
        return ServiceResult.success();
    }
}

- ApiBoardController.java

package com.example.jpa.sample.board.controller;

import com.auth0.jwt.exceptions.JWTVerificationException;
import com.example.jpa.sample.board.entity.BoardType;
import com.example.jpa.sample.board.model.*;
import com.example.jpa.sample.board.service.BoardService;
import com.example.jpa.sample.common.model.ResponseResult;
import com.example.jpa.sample.notice.model.ResponseError;
import com.example.jpa.sample.user.model.ResponseMessage;
import com.example.jpa.sample.util.JwtUtils;
import lombok.RequiredArgsConstructor;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.List;

@RequiredArgsConstructor
@RestController
public class ApiBoardController {

    private final BoardService boardService;

    // 문제 1
    @PostMapping("/api/board/type")
    public ResponseEntity<?> addBoardType(@RequestBody @Valid BoardTypeInput boardTypeInput, Errors errors) {

        if(errors.hasErrors()) {
            List<ResponseError> responseErrorList = ResponseError.of(errors.getAllErrors());
            return new ResponseEntity<>(ResponseMessage.fail("입력값이 정확하지 않습니다.", responseErrorList), HttpStatus.BAD_REQUEST);
        }

        ServiceResult result = boardService.addBoard(boardTypeInput);

        if(!result.isResult()) {
            return ResponseEntity.ok().body(ResponseMessage.fail(result.getMessage()));
        }

        return ResponseEntity.ok().build();
    }

    // 문제 2
    @PutMapping("/api/board/type/{id}")
    public ResponseEntity<?> updateBoardType(@PathVariable Long id, @RequestBody @Valid BoardTypeInput boardTypeInput, Errors errors) {

        if(errors.hasErrors()) {
            List<ResponseError> responseErrorList = ResponseError.of(errors.getAllErrors());
            return new ResponseEntity<>(ResponseMessage.fail("입력값이 정확하지 않습니다.", responseErrorList), HttpStatus.BAD_REQUEST);
        }

        ServiceResult result = boardService.updateBoard(id, boardTypeInput);

        if(!result.isResult()) {
            return ResponseEntity.ok().body(ResponseMessage.fail(result.getMessage()));
        }

        return ResponseEntity.ok().build();
    }

    // 문제 3
    @DeleteMapping("/api/board/type/{id}")
    public ResponseEntity<?> deleteBoardType(@PathVariable Long id) {
        ServiceResult result = boardService.deleteBoard(id);

        if(!result.isResult()) {
            return ResponseEntity.ok().body(ResponseMessage.fail(result.getMessage()));
        }

        return ResponseEntity.ok().body(ResponseMessage.success());
    }

    // 문제 4
    @GetMapping("/api/board/type")
    public ResponseEntity<?> boardType() {
        List<BoardType> boardTypeList = boardService.getAllBoardType();

        return ResponseEntity.ok().body(ResponseMessage.success(boardTypeList));
    }

    // 문제 5
    @PatchMapping("/api/board/type/{id}/using")
    public ResponseEntity<?> usingBoardType(@PathVariable Long id, @RequestBody BoardTypeUsing boardTypeUsing) {
        ServiceResult result = boardService.setBoardTypeUsing(id, boardTypeUsing);

        if(!result.isResult()) {
            return ResponseEntity.ok().body(ResponseMessage.fail(result.getMessage()));
        }

        return ResponseEntity.ok().body(ResponseMessage.success());
    }

    // 문제 6
    @GetMapping("/api/board/type/count")
    public ResponseEntity<?> boardTypeCount() {
        List<BoardTypeCount> boardTypeCountList = boardService.getBoardTypeCount();
        return ResponseEntity.ok().body(boardTypeCountList);
    }

    // 문제 7
    @PatchMapping("/api/board/{id}/top")
    public ResponseEntity<?> boardPostTop(@PathVariable Long id) {

        ServiceResult result = boardService.setBoardTop(id, true);
        return ResponseEntity.ok().body(result);
    }

    // 문제 8
    @PatchMapping("/api/board/{id}/top/clear")
    public ResponseEntity<?> boardPostTopClear(@PathVariable Long id) {

        ServiceResult result = boardService.setBoardTop(id, false);
        return ResponseEntity.ok().body(result);
    }

    // 문제 9
    @PatchMapping("/api/board/{id}/publish")
    public ResponseEntity<?> boardPeriod(@PathVariable Long id, @RequestBody BoardPeriod boardPeriod) {

        ServiceResult result = boardService.setBoardPeriod(id, boardPeriod);

        if(!result.isResult()) {
            return ResponseResult.fail(result.getMessage());
        }
        return ResponseResult.success();
    }

    // 문제 10
    @PutMapping("/api/board/{id}/hits")
    public ResponseEntity<?> boardHits(@PathVariable Long id, @RequestHeader("X-ACCESS-TOKEN") String token) {

        String email = "";
        try {
            email = JwtUtils.getIssuer(token);
        } catch(JWTVerificationException e) {
            return ResponseResult.fail("토큰 정보가 정확하지 않습니다.");
        }

        ServiceResult result = boardService.setBoardHits(id, email);
        if(result.isFail()) {
            return ResponseResult.fail(result.getMessage());
        }
        return ResponseResult.success();
    }

    // 문제 11
    @PutMapping("/api/board/{id}/like")
    public ResponseEntity<?> boardLike(@PathVariable Long id, @RequestHeader("X-ACCESS-TOKEN") String token) {
        String email = "";
        try {
            email = JwtUtils.getIssuer(token);
        } catch(JWTVerificationException e) {
            return ResponseResult.fail("토큰 정보가 정확하지 않습니다.");
        }

        ServiceResult result = boardService.setBoardLike(id, email);
        return ResponseResult.result(result);

    }

    // 문제 12
    @PutMapping("/api/board/{id}/unlike")
    public ResponseEntity<?> boardUnLike(@PathVariable Long id, @RequestHeader("X-ACCESS-TOKEN") String token) {
        String email = "";
        try {
            email = JwtUtils.getIssuer(token);
        } catch(JWTVerificationException e) {
            return ResponseResult.fail("토큰 정보가 정확하지 않습니다.");
        }

        ServiceResult result = boardService.setBoardUnLike(id, email);
        return ResponseResult.result(result);

    }
}