content: package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.query.cmd;
  
  import com.genersoft.iot.vmp.common.enums.ChannelDataType;
  import com.genersoft.iot.vmp.gb28181.bean.CommonGBChannel;
  import com.genersoft.iot.vmp.gb28181.bean.Device;
  import com.genersoft.iot.vmp.gb28181.bean.Platform;
  import com.genersoft.iot.vmp.gb28181.service.IDeviceChannelService;
  import com.genersoft.iot.vmp.gb28181.service.IDeviceService;
  import com.genersoft.iot.vmp.gb28181.service.IGbChannelService;
  import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommanderForPlatform;
  import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
  import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.IMessageHandler;
  import com.genersoft.iot.vmp.gb28181.transmit.event.request.impl.message.query.QueryMessageHandler;
  import gov.nist.javax.sip.message.SIPRequest;
  import lombok.extern.slf4j.Slf4j;
  import org.dom4j.Element;
  import org.springframework.beans.factory.InitializingBean;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Component;
  
  import javax.sip.InvalidArgumentException;
  import javax.sip.RequestEvent;
  import javax.sip.SipException;
  import javax.sip.header.FromHeader;
  import javax.sip.message.Response;
  import java.text.ParseException;
  
  import static com.genersoft.iot.vmp.gb28181.utils.XmlUtil.getText;
  
  @Slf4j
  @Component
  public class DeviceInfoQueryMessageHandler extends SIPRequestProcessorParent implements InitializingBean, IMessageHandler {
  
      private final String cmdType = "DeviceInfo";
  
      @Autowired
      private QueryMessageHandler queryMessageHandler;
  
      @Autowired
      private SIPCommanderForPlatform cmderFroPlatform;
  
      @Autowired
      private IDeviceService deviceService;
  
      @Autowired
      private IGbChannelService channelService;
  
      @Autowired
      private IDeviceChannelService deviceChannelService;
  
      @Override
      public void afterPropertiesSet() throws Exception {
          queryMessageHandler.addHandler(cmdType, this);
      }
  
      @Override
      public void handForDevice(RequestEvent evt, Device device, Element rootElement) {
  
      }
  
      @Override
      public void handForPlatform(RequestEvent evt, Platform platform, Element rootElement) {
          log.info("[DeviceInfo查询]消息");
          SIPRequest request = (SIPRequest) evt.getRequest();
          FromHeader fromHeader = (FromHeader) evt.getRequest().getHeader(FromHeader.NAME);
  
          String sn = rootElement.element("SN").getText();
  
          /*根据WVP原有的数据结构，设备和通道是分开放置，设备信息都是存放在设备表里，通道表里的设备信息不可作为真实信息处理
          大部分NVR/IPC设备对他的通道信息实现都是返回默认的值没有什么参考价值。NVR/IPC通道我们统一使用设备表的设备信息来作为返回。
          我们这里使用查询数据库的方式来实现这个设备信息查询的功能，在其他地方对设备信息更新达到正确的目的。*/
  
          String channelId = getText(rootElement, "DeviceID");
          // 查询这是通道id还是设备id
          if (platform.getDeviceGBId().equals(channelId)) {
              // id指向平台的国标编号，那么就是查询平台的信息
              try {
                  cmderFroPlatform.deviceInfoResponse(platform, null, sn, fromHeader.getTag());
              } catch (SipException | InvalidArgumentException | ParseException e) {
                  log.error("[命令发送失败] 国标级联 DeviceInfo查询回复: {}", e.getMessage());
              }
              return;
          }
          CommonGBChannel channel = channelService.queryOneWithPlatform(platform.getId(), channelId);
          if (channel == null) {
              // 不存在则回复404
              log.warn("[DeviceInfo] 通道不存在： 通道编号： {}", channelId);
              try {
                  responseAck(request, Response.NOT_FOUND, "channel not found or offline");
              } catch (SipException | InvalidArgumentException | ParseException e) {
                  log.error("[命令发送失败] DeviceInfo查询回复: {}", e.getMessage());
                  return;
              }
              return;
          }
          // 判断通道类型
          if (channel.getDataType() != ChannelDataType.GB28181) {
              // 非国标通道不支持录像回放控制
              log.warn("[DeviceInfo] 非国标通道不支持录像回放控制： 通道ID： {}", channel.getGbId());
              try {
                  responseAck(request, Response.FORBIDDEN, "");
              } catch (SipException | InvalidArgumentException | ParseException e) {
                  log.error("[命令发送失败] DeviceInfo查询回复: {}", e.getMessage());
                  return;
              }
              return;
          }
  
          // 根据通道ID，获取所属设备
          Device device = deviceService.getDevice(channel.getDataDeviceId());
          if (device == null) {
              // 不存在则回复404
              log.warn("[DeviceInfo] 通道所属设备不存在， 通道ID： {}", channel.getDataDeviceId());
  
              try {
                  responseAck(request, Response.NOT_FOUND, "device not found ");
              } catch (SipException | InvalidArgumentException | ParseException e) {
                  log.error("[命令发送失败] DeviceInfo查询回复: {}", e.getMessage());
                  return;
              }
              return;
          }
          try {
              // 回复200 OK
              responseAck((SIPRequest) evt.getRequest(), Response.OK);
          } catch (SipException | InvalidArgumentException | ParseException e) {
              log.error("[命令发送失败] DeviceInfo查询回复: {}", e.getMessage());
              return;
          }
          try {
              cmderFroPlatform.deviceInfoResponse(platform, device, sn, fromHeader.getTag());
          } catch (SipException | InvalidArgumentException | ParseException e) {
              log.error("[命令发送失败] 国标级联 DeviceInfo查询回复: {}", e.getMessage());
          }
      }
  }
  