first commit

service/group/logic/change_owner.go

@@ -0,0 +1,58 @@
+package logic
+
+import (
+	"context"
+	xerror "gitlab.33.cn/chat/dtalk/pkg/error"
+	pb "gitlab.33.cn/chat/dtalk/service/group/api"
+	"gitlab.33.cn/chat/dtalk/service/group/service"
+)
+
+type ChangeOwnerLogic struct {
+	ctx context.Context
+	svc *service.Service
+}
+
+func NewChangeOwnerLogic(ctx context.Context, svc *service.Service) *ChangeOwnerLogic {
+	return &ChangeOwnerLogic{
+		ctx: ctx,
+		svc: svc,
+	}
+}
+
+// ChangeOwner 退出群
+func (l *ChangeOwnerLogic) ChangeOwner(req *pb.ChangeOwnerReq) (*pb.ChangeOwnerResp, error) {
+	groupId := req.GroupId
+	personId := req.PersonId
+	memberId := req.MemberId
+
+	group, err := l.svc.GetGroupInfoByGroupId(l.ctx, groupId)
+	if err != nil {
+		return nil, err
+	}
+
+	person, err := l.svc.GetPersonByMemberIdAndGroupId(l.ctx, personId, groupId)
+	if err != nil {
+		return nil, err
+	}
+
+	member, err := l.svc.GetMemberByMemberIdAndGroupId(l.ctx, memberId, groupId)
+	if err != nil {
+		return nil, err
+	}
+
+	// 只有群主可以转让群
+	if err = person.IsOwner(); err != nil {
+		return nil, err
+	}
+
+	if personId == memberId {
+		return nil, xerror.NewError(xerror.GroupChangeOwnerSelf)
+	}
+
+	err = l.svc.ChangeOwner(l.ctx, group, person, member)
+	if err != nil {
+		return nil, err
+	}
+
+	return &pb.ChangeOwnerResp{}, nil
+}