package cn.iocoder.yudao.module.im.service.channel;
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import cn.hutool.core.collection.CollUtil;
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import cn.hutool.core.util.ObjUtil;
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import cn.iocoder.yudao.framework.common.pojo.PageResult;
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import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
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import cn.iocoder.yudao.module.im.controller.admin.manager.channel.vo.channel.ImChannelPageReqVO;
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import cn.iocoder.yudao.module.im.controller.admin.manager.channel.vo.channel.ImChannelSaveReqVO;
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import cn.iocoder.yudao.module.im.dal.dataobject.channel.ImChannelDO;
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import cn.iocoder.yudao.module.im.dal.mysql.channel.ImChannelMapper;
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import jakarta.annotation.Resource;
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import org.springframework.context.annotation.Lazy;
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import org.springframework.stereotype.Service;
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import org.springframework.validation.annotation.Validated;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
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import static cn.iocoder.yudao.module.im.enums.ErrorCodeConstants.*;
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/**
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* IM 频道 Service 实现类
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*
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* @author 芋道源码
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*/
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@Service
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@Validated
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public class ImChannelServiceImpl implements ImChannelService {
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@Resource
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private ImChannelMapper channelMapper;
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@Resource
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@Lazy // 延迟加载，解决循环依赖
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private ImChannelMaterialService channelMaterialService;
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// ==================== 用户端 ====================
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@Override
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public List<ImChannelDO> getChannelListByStatus(Integer status) {
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return channelMapper.selectListByStatusOrderBySort(status);
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}
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@Override
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public List<ImChannelDO> getChannelList(Collection<Long> ids) {
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if (CollUtil.isEmpty(ids)) {
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return Collections.emptyList();
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}
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return channelMapper.selectByIds(ids);
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}
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@Override
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public ImChannelDO validateChannelExists(Long id) {
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ImChannelDO channel = channelMapper.selectById(id);
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if (channel == null) {
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throw exception(IM_CHANNEL_NOT_EXISTS);
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}
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return channel;
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}
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// ==================== 管理后台 ====================
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@Override
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public PageResult<ImChannelDO> getChannelPage(ImChannelPageReqVO reqVO) {
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return channelMapper.selectPage(reqVO);
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}
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@Override
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public ImChannelDO getChannel(Long id) {
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return channelMapper.selectById(id);
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}
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@Override
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public Long createChannel(ImChannelSaveReqVO reqVO) {
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// 校验 code 唯一
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validateCodeUnique(null, reqVO.getCode());
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// 插入
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ImChannelDO channel = BeanUtils.toBean(reqVO, ImChannelDO.class);
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channelMapper.insert(channel);
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return channel.getId();
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}
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@Override
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public void updateChannel(ImChannelSaveReqVO reqVO) {
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// 1.1 校验存在
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validateChannelExists(reqVO.getId());
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// 1.2 校验 code 唯一
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validateCodeUnique(reqVO.getId(), reqVO.getCode());
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// 2. 更新
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ImChannelDO updateObj = BeanUtils.toBean(reqVO, ImChannelDO.class);
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channelMapper.updateById(updateObj);
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}
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@Override
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public void deleteChannel(Long id) {
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// 1.1 校验存在
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validateChannelExists(id);
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// 1.2 防止误删频道导致历史素材 / 消息回查不到归属
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if (channelMaterialService.getMaterialCountByChannelId(id) > 0) {
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throw exception(IM_CHANNEL_HAS_MATERIAL);
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}
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// 2. 删除频道
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channelMapper.deleteById(id);
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}
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private void validateCodeUnique(Long id, String code) {
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ImChannelDO exist = channelMapper.selectByCode(code);
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if (exist == null) {
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return;
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}
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if (id == null || ObjUtil.notEqual(exist.getId(), id)) {
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throw exception(IM_CHANNEL_CODE_DUPLICATED, code);
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}
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}
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}
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