package com.zhentao.information.service;

import com.zhentao.groups.dto.GroupDto;
import com.zhentao.groups.service.GroupsService;
import com.zhentao.information.cache.GroupMemberCache;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.List;

/**
 * 群聊初始化服务
 * 用于初始化群成员缓存
 */
@Slf4j
@Service
public class GroupInitService {

    @Resource
    private GroupsService groupsService;

    @Resource
    private GroupMemberCache groupMemberCache;

    /**
     * 在应用启动时初始化群成员缓存
     */
    @PostConstruct
    public void init() {
        try {
            List<GroupDto> groupList = groupsService.getList();
            groupList.forEach(group -> {
                groupMemberCache.updateGroupMembers(group.getGroupId(), group.getUid());
            });
            log.info("群成员缓存初始化完成，共 {} 个群", groupList.size());
        } catch (Exception e) {
            log.error("群成员缓存初始化失败", e);
        }
    }

    /**
     * 刷新群成员缓存
     */
    public void refreshGroupMemberCache() {
        try {
            List<GroupDto> groupList = groupsService.getList();
            groupList.forEach(group -> {
                groupMemberCache.updateGroupMembers(group.getGroupId(), group.getUid());
            });
            log.info("群成员缓存刷新完成，共 {} 个群", groupList.size());
        } catch (Exception e) {
            log.error("群成员缓存刷新失败", e);
        }
    }
}