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Merge pull request #353 from Juinjang/feat/#343
[feat/#343] 좋아요 등록 및 취소 API 구현
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‎src/main/java/umc/th/juinjang/api/note/liked/controller/LikedNoteController.java‎

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package umc.th.juinjang.api.note.liked.controller;
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import org.springframework.security.core.annotation.AuthenticationPrincipal;
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import org.springframework.web.bind.annotation.DeleteMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import io.swagger.v3.oas.annotations.Operation;
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import lombok.RequiredArgsConstructor;
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import umc.th.juinjang.api.dto.ApiResponse;
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import umc.th.juinjang.api.note.liked.service.LikedNoteCommandService;
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import umc.th.juinjang.api.note.liked.service.response.LikedNoteDeleteResponse;
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import umc.th.juinjang.api.note.liked.service.response.LikedNotePostResponse;
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import umc.th.juinjang.domain.member.model.Member;
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@RestController
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@RequestMapping("/api/v2/shared-notes")
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@RequiredArgsConstructor
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public class LikedNoteController {
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private final LikedNoteCommandService likedNoteCommandService;
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@Operation(summary = "공유노트 좋아요 등록 API")
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@PostMapping("/{sharedNoteId}/likes")
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public ApiResponse<LikedNotePostResponse> createLikedNote(@AuthenticationPrincipal Member member,
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@PathVariable("sharedNoteId") Long sharedNoteId) {
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return ApiResponse.onSuccess(likedNoteCommandService.createLikedNote(member, sharedNoteId));
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}
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@Operation(summary = "공유노트 좋아요 취소 API")
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@DeleteMapping("/{sharedNoteId}/likes")
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public ApiResponse<LikedNoteDeleteResponse> deleteLikedNote(@AuthenticationPrincipal Member member,
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@PathVariable("sharedNoteId") Long sharedNoteId) {
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return ApiResponse.onSuccess(likedNoteCommandService.deleteLikedNote(member, sharedNoteId));
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}
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}

‎src/main/java/umc/th/juinjang/api/note/liked/service/LikedNoteCommandService.java‎

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package umc.th.juinjang.api.note.liked.service;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import lombok.RequiredArgsConstructor;
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import umc.th.juinjang.api.note.liked.service.response.LikedNoteDeleteResponse;
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import umc.th.juinjang.api.note.liked.service.response.LikedNotePostResponse;
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import umc.th.juinjang.api.note.shared.service.SharedNoteFinder;
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import umc.th.juinjang.api.note.shared.service.SharedNoteUpdater;
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import umc.th.juinjang.domain.member.model.Member;
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import umc.th.juinjang.domain.note.liked.model.LikedNote;
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import umc.th.juinjang.domain.note.shared.model.SharedNote;
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@Service
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@RequiredArgsConstructor
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public class LikedNoteCommandService {
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private final LikedNoteUpdater likedNoteUpdater;
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private final SharedNoteFinder sharedNoteFinder;
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private final SharedNoteUpdater sharedNoteUpdater;
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private final LikedNoteFinder likedNoteFinder;
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private final LikedNoteDeleter likedNoteDeleter;
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@Transactional
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public LikedNotePostResponse createLikedNote(Member member, Long sharedNoteId) {
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SharedNote sharedNote = sharedNoteFinder.getById(sharedNoteId);
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LikedNote likedNote = LikedNote.create(member, sharedNote);
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likedNoteUpdater.save(likedNote);
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sharedNoteUpdater.incrementLikedCountById(sharedNoteId);
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return new LikedNotePostResponse(sharedNoteFinder.getLikedNoteById(sharedNoteId));
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}
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@Transactional
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public LikedNoteDeleteResponse deleteLikedNote(Member member, Long sharedNoteId) {
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SharedNote sharedNote = sharedNoteFinder.getById(sharedNoteId);
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LikedNote likedNote = likedNoteFinder.getByMemberAndSharedNote(member, sharedNote);
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likedNoteDeleter.delete(likedNote);
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sharedNoteUpdater.decrementLikedCountById(sharedNoteId);
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return new LikedNoteDeleteResponse(sharedNoteFinder.getLikedNoteById(sharedNoteId));
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}
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}

‎src/main/java/umc/th/juinjang/api/note/liked/service/LikedNoteDeleter.java‎

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package umc.th.juinjang.api.note.liked.service;
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import org.springframework.stereotype.Component;
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import lombok.RequiredArgsConstructor;
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import umc.th.juinjang.domain.note.liked.model.LikedNote;
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import umc.th.juinjang.domain.note.liked.model.repository.LikedNoteRepository;
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@Component
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@RequiredArgsConstructor
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public class LikedNoteDeleter {
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private final LikedNoteRepository likedNoteRepository;
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void delete(LikedNote likedNote) {
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likedNoteRepository.delete(likedNote);
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}
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}

‎src/main/java/umc/th/juinjang/api/note/liked/service/LikedNoteFinder.java‎

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import org.springframework.stereotype.Component;
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import lombok.RequiredArgsConstructor;
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import umc.th.juinjang.common.code.status.ErrorStatus;
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import umc.th.juinjang.common.exception.handler.LikedNoteHandler;
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import umc.th.juinjang.domain.member.model.Member;
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import umc.th.juinjang.domain.note.liked.model.LikedNote;
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import umc.th.juinjang.domain.note.liked.model.repository.LikedNoteRepository;
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import umc.th.juinjang.domain.note.shared.model.SharedNote;
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public boolean existsByMemberAndSharedNote(Member member, SharedNote sharedNote) {
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return likedNoteRepository.existsByMemberAndSharedNote(member, sharedNote);
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}
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public LikedNote getByMemberAndSharedNote(Member member, SharedNote sharedNote) {
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return likedNoteRepository.findByMemberAndSharedNote(member, sharedNote)
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.orElseThrow(() -> new LikedNoteHandler(ErrorStatus.LIKEDNOTE_NOT_FOUND));
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}
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}

‎src/main/java/umc/th/juinjang/api/note/liked/service/LikedNoteUpdater.java‎

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package umc.th.juinjang.api.note.liked.service;
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import org.springframework.dao.DataIntegrityViolationException;
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import org.springframework.stereotype.Component;
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import lombok.RequiredArgsConstructor;
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import umc.th.juinjang.common.code.status.ErrorStatus;
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import umc.th.juinjang.common.exception.handler.LikedNoteHandler;
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import umc.th.juinjang.common.exception.handler.SharedNoteHandler;
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import umc.th.juinjang.domain.member.model.Member;
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import umc.th.juinjang.domain.note.liked.model.LikedNote;
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import umc.th.juinjang.domain.note.liked.model.repository.LikedNoteRepository;
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@Component
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@RequiredArgsConstructor
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public class LikedNoteUpdater {
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private final LikedNoteRepository likedNoteRepository;
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public void save(LikedNote likedNote) {
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try {
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likedNoteRepository.save(likedNote);
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} catch (DataIntegrityViolationException e) {
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throw new LikedNoteHandler(ErrorStatus.LIKEDNOTE_CONFLICT);
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}
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}
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}

‎src/main/java/umc/th/juinjang/api/note/liked/service/response/LikedNoteDeleteResponse.java‎

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package umc.th.juinjang.api.note.liked.service.response;
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public record LikedNoteDeleteResponse(Long count) {
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}

‎src/main/java/umc/th/juinjang/api/note/liked/service/response/LikedNotePostResponse.java‎

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package umc.th.juinjang.api.note.liked.service.response;
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public record LikedNotePostResponse(long count) {
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}

‎src/main/java/umc/th/juinjang/api/note/shared/service/SharedNoteFinder.java‎

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private final SharedNoteRepository sharedNoteRepository;
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SharedNote getById(Long id) {
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public SharedNote getById(Long id) {
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return sharedNoteRepository.findById(id)
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.orElseThrow(() -> new SharedNoteHandler(ErrorStatus.SHAREDNOTE_NOT_FOUND));
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}
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Optional<SharedNote> findById(Long id) {
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return sharedNoteRepository.findById(id);
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}
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public Long getLikedNoteById(Long id) {
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return sharedNoteRepository.getLikeCountById(id);
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}
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}

‎src/main/java/umc/th/juinjang/api/note/shared/service/SharedNoteUpdater.java‎

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void updateViewCount(long sharedNoteId, long addAmount) {
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sharedNoteRepository.incrementViewCount(sharedNoteId, addAmount);
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}
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public void incrementLikedCountById(Long sharedNoteId) {
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sharedNoteRepository.incrementLikedCountById(sharedNoteId);
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}
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public void decrementLikedCountById(Long sharedNoteId) {
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sharedNoteRepository.decrementLikedCountById(sharedNoteId);
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}
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}

‎src/main/java/umc/th/juinjang/api/note/shared/service/response/SharedNoteGetResponse.java‎

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String price,
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String monthlyRent,
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boolean isLiked,
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int likedCount,
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Long likedCount,
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String period,
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String updatedAt,
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Long viewCount,

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