package com.genersoft.iot.vmp.gb28181.transmit.event.request.impl;

import com.genersoft.iot.vmp.common.StreamInfo;
import com.genersoft.iot.vmp.gb28181.bean.Device;
import com.genersoft.iot.vmp.gb28181.bean.InviteStreamType;
import com.genersoft.iot.vmp.gb28181.bean.SendRtpItem;
import com.genersoft.iot.vmp.gb28181.bean.SsrcTransaction;
import com.genersoft.iot.vmp.gb28181.session.VideoStreamSessionManager;
import com.genersoft.iot.vmp.gb28181.transmit.SIPProcessorObserver;
import com.genersoft.iot.vmp.gb28181.transmit.cmd.ISIPCommander;
import com.genersoft.iot.vmp.gb28181.transmit.event.request.ISIPRequestProcessor;
import com.genersoft.iot.vmp.gb28181.transmit.event.request.SIPRequestProcessorParent;
import com.genersoft.iot.vmp.media.zlm.ZLMRTPServerFactory;
import com.genersoft.iot.vmp.media.zlm.dto.MediaServerItem;
import com.genersoft.iot.vmp.service.IMediaServerService;
import com.genersoft.iot.vmp.service.bean.MessageForPushChannel;
import com.genersoft.iot.vmp.storager.IRedisCatchStorage;
import com.genersoft.iot.vmp.storager.IVideoManagerStorage;
import com.genersoft.iot.vmp.utils.SerializeUtils;
import gov.nist.javax.sip.stack.SIPDialog;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.sip.*;
import javax.sip.address.SipURI;
import javax.sip.header.CallIdHeader;
import javax.sip.header.FromHeader;
import javax.sip.header.HeaderAddress;
import javax.sip.header.ToHeader;
import javax.sip.message.Response;
import java.text.ParseException;
import java.util.HashMap;
import java.util.Map;

/**
 * SIP命令类型： BYE请求
 */
@Component
public class ByeRequestProcessor extends SIPRequestProcessorParent implements InitializingBean, ISIPRequestProcessor {

	private final Logger logger = LoggerFactory.getLogger(ByeRequestProcessor.class);
	private final String method = "BYE";

	@Autowired
	private ISIPCommander cmder;

	@Autowired
	private IRedisCatchStorage redisCatchStorage;

	@Autowired
	private IVideoManagerStorage storager;

	@Autowired
	private ZLMRTPServerFactory zlmrtpServerFactory;

	@Autowired
	private IMediaServerService mediaServerService;

	@Autowired
	private SIPProcessorObserver sipProcessorObserver;

	@Autowired
	private VideoStreamSessionManager streamSession;

	@Override
	public void afterPropertiesSet() throws Exception {
		// 添加消息处理的订阅
		sipProcessorObserver.addRequestProcessor(method, this);
	}

	/**
	 * 处理BYE请求
	 * @param evt
	 */
	@Override
	public void process(RequestEvent evt) {
		try {
			responseAck(evt, Response.OK);
			Dialog dialog = evt.getDialog();
			CallIdHeader callIdHeader = (CallIdHeader)evt.getRequest().getHeader(CallIdHeader.NAME);
			if (dialog == null) {
				return;
			}
			if (dialog.getState().equals(DialogState.TERMINATED)) {
				String platformGbId = ((SipURI) ((HeaderAddress) evt.getRequest().getHeader(FromHeader.NAME)).getAddress().getURI()).getUser();
				String channelId = ((SipURI) ((HeaderAddress) evt.getRequest().getHeader(ToHeader.NAME)).getAddress().getURI()).getUser();
				SendRtpItem sendRtpItem =  redisCatchStorage.querySendRTPServer(platformGbId, channelId, null, callIdHeader.getCallId());
				logger.info("收到bye, [{}/{}]", platformGbId, channelId);
				if (sendRtpItem != null){
					String streamId = sendRtpItem.getStreamId();
					Map<String, Object> param = new HashMap<>();
					param.put("vhost","__defaultVhost__");
					param.put("app",sendRtpItem.getApp());
					param.put("stream",streamId);
					param.put("ssrc",sendRtpItem.getSsrc());
					logger.info("收到bye:停止向上级推流：" + streamId);
					MediaServerItem mediaInfo = mediaServerService.getOne(sendRtpItem.getMediaServerId());
					zlmrtpServerFactory.stopSendRtpStream(mediaInfo, param);
					redisCatchStorage.deleteSendRTPServer(platformGbId, channelId, callIdHeader.getCallId(), null);
					int totalReaderCount = zlmrtpServerFactory.totalReaderCount(mediaInfo, sendRtpItem.getApp(), streamId);
					if (totalReaderCount <= 0) {
						logger.info("收到bye: {} 无其它观看者，通知设备停止推流", streamId);
						if (sendRtpItem.getPlayType().equals(InviteStreamType.PLAY)) {
							cmder.streamByeCmd(sendRtpItem.getDeviceId(), channelId, streamId, null);
						}
						if (sendRtpItem.getPlayType().equals(InviteStreamType.PUSH)) {
							MessageForPushChannel messageForPushChannel = new MessageForPushChannel();
							messageForPushChannel.setType(0);
							messageForPushChannel.setGbId(sendRtpItem.getChannelId());
							messageForPushChannel.setApp(sendRtpItem.getApp());
							messageForPushChannel.setStream(sendRtpItem.getStreamId());
							messageForPushChannel.setMediaServerId(sendRtpItem.getMediaServerId());
							messageForPushChannel.setPlatFormId(sendRtpItem.getPlatformId());
							redisCatchStorage.sendStreamPushRequestedMsg(messageForPushChannel);
						}
					}
				}
				// 可能是设备主动停止
				Device device = storager.queryVideoDeviceByChannelId(platformGbId);
                if (device != null) {
					storager.stopPlay(device.getDeviceId(), channelId);
					StreamInfo streamInfo = redisCatchStorage.queryPlayByDevice(device.getDeviceId(), channelId);
					if (streamInfo != null) {
						redisCatchStorage.stopPlay(streamInfo);
						mediaServerService.closeRTPServer(device.getDeviceId(), channelId, streamInfo.getStream());
					}
					SsrcTransaction ssrcTransactionForPlay = streamSession.getSsrcTransaction(device.getDeviceId(), channelId, "play", null);
					if (ssrcTransactionForPlay != null){
						SIPDialog dialogForPlay = (SIPDialog) SerializeUtils.deSerialize(ssrcTransactionForPlay.getDialog());
						if (dialogForPlay.getCallId().equals(callIdHeader.getCallId())){
							// 释放ssrc
							MediaServerItem mediaServerItem = mediaServerService.getOne(ssrcTransactionForPlay.getMediaServerId());
							if (mediaServerItem != null) {
								mediaServerService.releaseSsrc(mediaServerItem.getId(), ssrcTransactionForPlay.getSsrc());
							}
							streamSession.remove(device.getDeviceId(), channelId, ssrcTransactionForPlay.getStream());
						}
					}
					SsrcTransaction ssrcTransactionForPlayBack = streamSession.getSsrcTransaction(device.getDeviceId(), channelId, callIdHeader.getCallId(), null);
					if (ssrcTransactionForPlayBack != null) {
						// 释放ssrc
						MediaServerItem mediaServerItem = mediaServerService.getOne(ssrcTransactionForPlayBack.getMediaServerId());
						if (mediaServerItem != null) {
							mediaServerService.releaseSsrc(mediaServerItem.getId(), ssrcTransactionForPlayBack.getSsrc());
						}
						streamSession.remove(device.getDeviceId(), channelId, ssrcTransactionForPlayBack.getStream());
					}
				}
			}
		} catch (SipException e) {
			e.printStackTrace();
		} catch (InvalidArgumentException e) {
			e.printStackTrace();
		} catch (ParseException e) {
			e.printStackTrace();
		}
	}
}