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package com.tanpu.community.service;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.fasterxml.jackson.core.type.TypeReference;
import com.tanpu.biz.common.enums.community.CommentTypeEnum;
import com.tanpu.biz.common.enums.community.ReportStatusEnum;
import com.tanpu.common.exception.BizException;
import com.tanpu.common.uuid.UuidGenHelper;
import com.tanpu.community.api.beans.req.theme.ForwardThemeReq;
import com.tanpu.community.api.enums.DeleteTagEnum;
import com.tanpu.community.cache.RedisCache;
import com.tanpu.community.dao.entity.community.CommentEntity;
import com.tanpu.community.dao.entity.community.TimesCountEntity;
import com.tanpu.community.dao.mapper.community.CommentMapper;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import static com.tanpu.community.api.constants.RedisKeyConstant.*;
@Service
public class CommentService {
@Resource
private CommentMapper commentMapper;
@Autowired
private UuidGenHelper uuidGenHelper;
@Autowired
private RedisCache redisCache;
@Transactional
public void insertComment(CommentEntity commentEntity) {
commentEntity.setCommentId(uuidGenHelper.getUuidStr());
commentMapper.insert(commentEntity);
//失效缓存
evictThemeCache(commentEntity.getThemeId());
}
public CommentEntity queryByIdIncludeDelete(String commmentId) {
return commentMapper.selectOne(new LambdaQueryWrapper<CommentEntity>()
.eq(CommentEntity::getCommentId, commmentId));
}
//统计主题集合的评论量
public Integer getTotalCountByThemeIds(List<String> themeIds) {
if (CollectionUtils.isEmpty(themeIds)) {
return 0;
}
return commentMapper.selectList((new LambdaQueryWrapper<CommentEntity>()
.in(CommentEntity::getThemeId, themeIds))
.eq(CommentEntity::getDeleteTag, DeleteTagEnum.NOT_DELETED))
.size();
}
//统计主题集合的评论量
public Integer getCommentCountByThemeId(String themeId) {
return commentMapper.selectList((new LambdaQueryWrapper<CommentEntity>()
.eq(CommentEntity::getThemeId, themeId))
.eq(CommentEntity::getDeleteTag, DeleteTagEnum.NOT_DELETED))
.size();
}
//统计主题集合的评论量
public Map<String, Integer> getCountMapByThemeIds(List<String> themeIds) {
if (CollectionUtils.isEmpty(themeIds)){
return new HashMap<>();
}
LambdaQueryWrapper<CommentEntity> wrapper = (new LambdaQueryWrapper<CommentEntity>()
.in(CommentEntity::getThemeId, themeIds))
.eq(CommentEntity::getDeleteTag, DeleteTagEnum.NOT_DELETED)
.groupBy(CommentEntity::getThemeId);
return commentMapper.selectCountByThemeIds(wrapper).stream()
.collect(Collectors.toMap(TimesCountEntity::getId, TimesCountEntity::getTimes));
}
public List<CommentEntity> selectByThemeId(String themeId) {
return redisCache.getList(StringUtils.joinWith("_", CACHE_COMMENT_THEMEID, themeId),
60, () -> {
LambdaQueryWrapper<CommentEntity> queryWrapper = new LambdaQueryWrapper<CommentEntity>()
.eq(CommentEntity::getThemeId, themeId)
.eq(CommentEntity::getDeleteTag, DeleteTagEnum.NOT_DELETED.getCode())
.orderByDesc(CommentEntity::getCreateTime);
return commentMapper.selectList(queryWrapper);
}, new TypeReference<List<CommentEntity>>() {
});
}
public List<CommentEntity> queryCommentsByUserId(String userId, String lastId, Integer pageSize) {
LambdaQueryWrapper<CommentEntity> queryWrapper = new LambdaQueryWrapper<CommentEntity>()
.eq(CommentEntity::getAuthorId, userId)
.eq(CommentEntity::getCommentType, CommentTypeEnum.THEME.getCode())
.eq(CommentEntity::getDeleteTag, DeleteTagEnum.NOT_DELETED.getCode())
.orderByDesc(CommentEntity::getCreateTime);
if (StringUtils.isNotEmpty(lastId)) {
CommentEntity commentEntity = commentMapper.selectOne(new LambdaQueryWrapper<CommentEntity>()
.eq(CommentEntity::getCommentId, lastId));
if (commentEntity == null) throw new BizException("评论未找到，id：" + lastId);
queryWrapper.lt(CommentEntity::getCreateTime, commentEntity.getCreateTime());
}
if (pageSize != null) {
queryWrapper.last("limit " + pageSize);
}
return commentMapper.selectList(queryWrapper);
}
//修改举报状态，可修改已删除
public void updateReportStatus(String commentId) {
CommentEntity commentEntity = queryByIdIncludeDelete(commentId);
if (commentEntity == null) {
throw new BizException("评论未找到，id：" + commentId);
}
commentEntity.setReportStatus(ReportStatusEnum.REPORTED.getCode());
commentMapper.updateById(commentEntity);
//失效缓存
evictThemeCache(commentEntity.getThemeId());
}
//删除评论
@Transactional
public void delete(String commentId, String userId) {
CommentEntity commentEntity = this.queryByIdIncludeDelete(commentId);
if (commentEntity==null || !commentEntity.getAuthorId().equals(userId)){
throw new BizException("删除评论与用户不匹配，commentId："+commentId+",userId:"+userId);
}
commentEntity.setDeleteTag(DeleteTagEnum.DELETED.getCode());
commentMapper.updateById(commentEntity);
//失效缓存
evictThemeCache(commentEntity.getThemeId());
}
// 失效关联主题缓存
private void evictThemeCache(String themeId){
// 评论内容
redisCache.evict(StringUtils.joinWith("_", CACHE_COMMENT_THEMEID, themeId));
// 主题内容
redisCache.evict(StringUtils.joinWith("_", CACHE_THEME_ID, themeId));
// 评论数
redisCache.evict(StringUtils.joinWith("_", THEME_COMMENT_COUNT, themeId));
}
public List<CommentEntity> queryAll() {
return commentMapper.selectList(new LambdaQueryWrapper<CommentEntity>()
.eq(CommentEntity::getDeleteTag,DeleteTagEnum.NOT_DELETED.getCode())
.orderByAsc(CommentEntity::getCreateTime));
}
public CommentEntity queryByCommentId(String commentId) {
return commentMapper.selectOne(new LambdaQueryWrapper<CommentEntity>().eq(CommentEntity::getCommentId,commentId));
}
public String forwardSyncComment(ForwardThemeReq req, String userId) {
CommentEntity commentEntity = CommentEntity.builder()
.themeId(req.getFormerThemeId())
.authorId(userId)
.content(req.getContent().get(0).getValue())
.commentType(CommentTypeEnum.THEME.getCode())
.build();
this.insertComment(commentEntity);
return commentEntity.getCommentId();
}
}