lasuo_back/src/main/java/com/izouma/nineth/service/NewsLikeService.java

package com.izouma.nineth.service;

import com.izouma.nineth.domain.NewsLike;
import com.izouma.nineth.dto.PageQuery;
import com.izouma.nineth.repo.NewsLikeRepo;
import com.izouma.nineth.repo.NewsRepo;
import com.izouma.nineth.repo.ShowroomRepo;
import com.izouma.nineth.utils.JpaUtils;
import lombok.AllArgsConstructor;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
@AllArgsConstructor
public class NewsLikeService {

    private NewsLikeRepo newsLikeRepo;
    private NewsRepo     newsRepo;
    private ShowroomRepo showroomRepo;

    public Page<NewsLike> all(PageQuery pageQuery) {
        return newsLikeRepo.findAll(JpaUtils.toSpecification(pageQuery, NewsLike.class), JpaUtils.toPageRequest(pageQuery));
    }

    public void like(Long userId, Long newsId) {
        List<NewsLike> list = newsLikeRepo.findByUserIdAndNewsId(userId, newsId);
        if (!list.isEmpty()) return;
        newsLikeRepo.save(NewsLike.builder()
                .userId(userId)
                .newsId(newsId)
                .build());
        newsRepo.addLike(newsId, 1);
    }

    public void unlike(Long userId, Long newsId) {
        List<NewsLike> list = newsLikeRepo.findByUserIdAndNewsId(userId, newsId);
        if (!list.isEmpty()) {
            newsLikeRepo.deleteAll(list);
            newsRepo.addLike(newsId, -list.size());
        }
    }

    public void likeRoom(Long userId, Long roomId) {
        List<NewsLike> list = newsLikeRepo.findByUserIdAndShowroomId(userId, roomId);
        if (!list.isEmpty()) return;
        newsLikeRepo.save(NewsLike.builder()
                .userId(userId)
                .showroomId(roomId)
                .build());
        showroomRepo.addLike(roomId, 1);
    }

    public void unlikeRoom(Long userId, Long roomId) {
        List<NewsLike> list = newsLikeRepo.findByUserIdAndShowroomId(userId, roomId);
        if (!list.isEmpty()) {
            newsLikeRepo.deleteAll(list);
            showroomRepo.addLike(roomId, -list.size());
        }
    }
}