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package com.genersoft.iot.vmp.vmanager.play;
 
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.genersoft.iot.vmp.common.StreamInfo;
import com.genersoft.iot.vmp.media.zlm.ZLMRESTfulUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
import com.alibaba.fastjson.JSONObject;
import com.genersoft.iot.vmp.gb28181.bean.Device;
import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommander;
import com.genersoft.iot.vmp.storager.IVideoManagerStorager;
 
@CrossOrigin
@RestController
@RequestMapping("/api")
public class PlayController {
    
    private final static Logger logger = LoggerFactory.getLogger(PlayController.class);
    
    @Autowired
    private SIPCommander cmder;
    
    @Autowired
    private IVideoManagerStorager storager;
 
    @Autowired
    private ZLMRESTfulUtils zlmresTfulUtils;
    
    @GetMapping("/play/{deviceId}/{channelId}")
    public ResponseEntity<String> play(@PathVariable String deviceId,@PathVariable String channelId){
        
        Device device = storager.queryVideoDevice(deviceId);
        StreamInfo streamInfo = cmder.playStreamCmd(device, channelId);
        // 等待推流, TODO 默认超时15s
        boolean lockFlag = true;
        long startTime = System.currentTimeMillis();
        String streamId = String.format("%08x", Integer.parseInt(streamInfo.getSsrc())).toUpperCase();
 
        // 判断推流是否存在
        while (lockFlag) {
            try {
                if (System.currentTimeMillis() - startTime > 15 * 1000) {
                    JSONObject rtpInfo = zlmresTfulUtils.getRtpInfo(streamId);
                    if (rtpInfo == null){
                        continue;
                    }else {
                        lockFlag = false;
                        streamInfo = storager.queryPlay(streamInfo);
                        // 获取媒体信息
                        JSONObject mediaList = zlmresTfulUtils.getMediaList("rtp", "rtmp");
                        if (mediaList.getInteger("code") == 0) {
                            JSONArray data = mediaList.getJSONArray("data");
                            if (data!= null) {
                                for (Object datum : data) {
                                    JSONObject media = (JSONObject)datum;
                                    if (streamId.equals(media.getString("stream"))) {
                                        streamInfo.setTracks(media.getJSONArray("tracks"));
                                        storager.startPlay(streamInfo);
                                    }
                                }
                            }
                        }
                    };
 
                }
 
                Thread.sleep(200);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
 
        if (logger.isDebugEnabled()) {
            logger.debug(String.format("设备预览 API调用,deviceId:%s ,channelId:%s",deviceId, channelId));
            logger.debug("设备预览 API调用,ssrc:"+streamInfo.getSsrc()+",ZLMedia streamId:"+Integer.toHexString(Integer.parseInt(streamInfo.getSsrc())));
        }
        
        if(streamInfo!=null) {
            return new ResponseEntity<String>(JSON.toJSONString(streamInfo),HttpStatus.OK);
        } else {
            logger.warn("设备预览API调用失败!");
            return new ResponseEntity<String>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }
    
    @PostMapping("/play/{ssrc}/stop")
    public ResponseEntity<String> playStop(@PathVariable String ssrc){
        
        cmder.streamByeCmd(ssrc);
        StreamInfo streamInfo = storager.queryPlayBySSRC(ssrc);
        if (streamInfo == null) return new ResponseEntity<String>(HttpStatus.PAYMENT_REQUIRED);
        storager.stopPlay(streamInfo);
        if (logger.isDebugEnabled()) {
            logger.debug(String.format("设备预览停止API调用,ssrc:%s", ssrc));
        }
        
        if(ssrc!=null) {
            JSONObject json = new JSONObject();
            json.put("ssrc", ssrc);
            return new ResponseEntity<String>(json.toString(),HttpStatus.OK);
        } else {
            logger.warn("设备预览停止API调用失败!");
            return new ResponseEntity<String>(HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }
}