package chproto

type ServerInfo struct {
	Name         string
	MinorVersion uint64
	MajorVersion uint64
	Revision     uint64
}

func (srv *ServerInfo) ReadFrom(rd *Reader) (err error) {
	if srv.Name, err = rd.String(); err != nil {
		return err
	}
	if srv.MajorVersion, err = rd.Uvarint(); err != nil {
		return err
	}
	if srv.MinorVersion, err = rd.Uvarint(); err != nil {
		return err
	}
	if srv.Revision, err = rd.Uvarint(); err != nil {
		return err
	}

	if srv.Revision >= DBMS_MIN_REVISION_WITH_SERVER_TIMEZONE {
		if _, err := rd.String(); err != nil { // timezone
			return err
		}
	}
	if srv.Revision >= DBMS_MIN_REVISION_WITH_SERVER_DISPLAY_NAME {
		if _, err := rd.String(); err != nil { // display name
			return err
		}
	}
	if srv.Revision >= DBMS_MIN_REVISION_WITH_VERSION_PATCH {
		if _, err := rd.Uvarint(); err != nil { // server version patch
			return err
		}
	}

	return nil
}