package com.genersoft.iot.vmp.service.redisMsg;

import com.alibaba.fastjson2.JSON;
import com.genersoft.iot.vmp.common.VideoManagerConstants;
import com.genersoft.iot.vmp.conf.DynamicTask;
import com.genersoft.iot.vmp.service.IStreamPushService;
import com.genersoft.iot.vmp.service.bean.PushStreamStatusChangeFromRedisDto;
import com.genersoft.iot.vmp.storager.IRedisCatchStorage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.data.redis.connection.Message;
import org.springframework.data.redis.connection.MessageListener;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;

import java.util.concurrent.ConcurrentLinkedQueue;


/**
 * 接收redis发送的推流设备上线下线通知
 * @author lin
 */
@Component
public class RedisPushStreamStatusMsgListener implements MessageListener, ApplicationRunner {

    private final static Logger logger = LoggerFactory.getLogger(RedisPushStreamStatusMsgListener.class);

    @Autowired
    private IRedisCatchStorage redisCatchStorage;

    @Autowired
    private IStreamPushService streamPushService;

    @Autowired
    private DynamicTask dynamicTask;



    private ConcurrentLinkedQueue<Message> taskQueue = new ConcurrentLinkedQueue<>();

    @Qualifier("taskExecutor")
    @Autowired
    private ThreadPoolTaskExecutor taskExecutor;

    @Override
    public void onMessage(Message message, byte[] bytes) {
        boolean isEmpty = taskQueue.isEmpty();
        logger.warn("[REDIS消息-推流设备状态变化]： {}", new String(message.getBody()));
        taskQueue.offer(message);

        if (isEmpty) {
            taskExecutor.execute(() -> {
                while (!taskQueue.isEmpty()) {
                    Message msg = taskQueue.poll();
                    try {
                        PushStreamStatusChangeFromRedisDto statusChangeFromPushStream = JSON.parseObject(msg.getBody(), PushStreamStatusChangeFromRedisDto.class);
                        if (statusChangeFromPushStream == null) {
                            logger.warn("[REDIS消息]推流设备状态变化消息解析失败");
                            continue;
                        }
                        // 取消定时任务
                        dynamicTask.stop(VideoManagerConstants.VM_MSG_GET_ALL_ONLINE_REQUESTED);
                        if (statusChangeFromPushStream.isSetAllOffline()) {
                            // 所有设备离线
                            streamPushService.allStreamOffline();
                        }
                        if (statusChangeFromPushStream.getOfflineStreams() != null
                                && statusChangeFromPushStream.getOfflineStreams().size() > 0) {
                            // 更新部分设备离线
                            streamPushService.offline(statusChangeFromPushStream.getOfflineStreams());
                        }
                        if (statusChangeFromPushStream.getOnlineStreams() != null &&
                                statusChangeFromPushStream.getOnlineStreams().size() > 0) {
                            // 更新部分设备上线
                            streamPushService.online(statusChangeFromPushStream.getOnlineStreams());
                        }
                    }catch (Exception e) {
                        logger.warn("[REDIS的ALARM通知] 发现未处理的异常, {}",e.getMessage());
                    }
                }
            });
        }
    }

    @Override
    public void run(ApplicationArguments args) throws Exception {
        //  启动时设置所有推流通道离线，发起查询请求
        redisCatchStorage.sendStreamPushRequestedMsgForStatus();
        dynamicTask.startDelay(VideoManagerConstants.VM_MSG_GET_ALL_ONLINE_REQUESTED, ()->{
            logger.info("[REDIS消息]未收到redis回复推流设备状态，执行推流设备离线");
            // 五秒收不到请求就设置通道离线，然后通知上级离线
            streamPushService.allStreamOffline();
        }, 5000);
    }

}