package cn.iocoder.yudao.module.im.controller.admin.manager.group;
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import cn.hutool.core.collection.CollUtil;
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import cn.iocoder.yudao.framework.common.pojo.CommonResult;
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import cn.iocoder.yudao.framework.common.util.collection.MapUtils;
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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.group.vo.member.ImGroupMemberManagerRespVO;
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import cn.iocoder.yudao.module.im.dal.dataobject.group.ImGroupMemberDO;
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import cn.iocoder.yudao.module.im.service.group.ImGroupMemberService;
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import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
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import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.Parameter;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import jakarta.annotation.Resource;
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import org.springframework.security.access.prepost.PreAuthorize;
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import org.springframework.validation.annotation.Validated;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import java.util.Collections;
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import java.util.List;
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import java.util.Map;
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import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
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import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
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@Tag(name = "管理后台 - IM 群成员管理")
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@RestController
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@RequestMapping("/im/manager/group/member")
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@Validated
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public class ImGroupMemberManagerController {
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@Resource
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private ImGroupMemberService groupMemberService;
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@Resource
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private AdminUserApi adminUserApi;
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@GetMapping("/list")
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@Operation(summary = "获得群成员列表（含已退群成员，由前端按需过滤）")
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@Parameter(name = "groupId", description = "群编号", required = true, example = "1024")
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@PreAuthorize("@ss.hasPermission('im:manager:group:query')")
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public CommonResult<List<ImGroupMemberManagerRespVO>> getGroupMemberList(@RequestParam("groupId") Long groupId) {
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// 1. 查询群全部成员（含已退群）
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List<ImGroupMemberDO> members = groupMemberService.getGroupMemberListByGroupId(groupId);
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if (CollUtil.isEmpty(members)) {
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return success(Collections.emptyList());
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}
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// 2.1 批量查询用户信息
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Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(
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convertSet(members, ImGroupMemberDO::getUserId));
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// 2.2 转换为 VO，填充昵称、头像
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return success(BeanUtils.toBean(members, ImGroupMemberManagerRespVO.class, vo ->
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MapUtils.findAndThen(userMap, vo.getUserId(), user ->
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vo.setNickname(user.getNickname()).setAvatar(user.getAvatar()))));
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}
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}
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