package com.ruoyi.media.service.impl;

import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.media.domain.*;
import com.ruoyi.media.mapper.VtduMapper;
import com.ruoyi.media.service.IMediaService;
import com.ruoyi.utils.forest.MediaClient;
import com.ruoyi.utils.tools.ArdTool;
import com.ruoyi.utils.process.CmdUtils;
import com.sun.jna.Platform;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.annotation.Resource;
import java.io.File;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @Description: 流媒体业务
 * @ClassName: MediaService
 * @Author: 刘苏义
 * @Date: 2023年07月13日9:28
 * @Version: 1.0
 **/
@Service
@Slf4j(topic = "cmd")
@Order(2)
public class MediaServiceImpl implements IMediaService, ApplicationRunner {
    @Resource
    VtduMapper vtduMapper;
    @Resource
    MediaClient mediaClient;

    @Value("${mediamtx.host}")
    String mediamtxHost;
    @Value("${mediamtx.enabled}")
    Boolean mediamtxEnabled;
    @Value("${mediamtx.software_decoding}")
    Boolean softwareDecoding;

    String processName = "mediamtx.exe";

    @Override
    public void run(ApplicationArguments args) {
        try {
            log.debug("开始加载流媒体列表");
            List<StreamInfo> paths = paths();
            for (StreamInfo path : paths) {
                mediaClient.removePath(path.getName());
            }
            List<Vtdu> vtduList = vtduMapper.selectVtduList(new Vtdu());
            for (Vtdu vtdu : vtduList) {
                Map<String, String> map = addPath(vtdu.getName(), vtdu.getSourceUrl(), vtdu.getCodeType(), vtdu.getIsCode());
                vtdu.setRtspUrl(map.get("rtspUrl"));
                vtdu.setRtmpUrl(map.get("rtmpUrl"));
                vtdu.setWebrtcUrl(map.get("webrtcUrl"));
                vtdu.setUpdateTime(DateUtils.getNowDate());
                vtduMapper.updateVtdu(vtdu);
            }
        } catch (Exception ex) {
            log.error("加载流媒体列表异常:" + ex.getMessage());
        }
    }

    @PostConstruct
    public void initMediaMtx() {
        if (mediamtxEnabled) {
            log.debug("初始化启动mediaMTX");
            if (Platform.isWindows()) {
                String exePath = System.getProperty("user.dir") + File.separator + "lib" + File.separator + "mediamtx" + File.separator + "mediamtx.exe";
                String ymlPath = System.getProperty("user.dir") + File.separator + "lib" + File.separator + "mediamtx" + File.separator + "mediamtx.yml";

                List<String> cmd = new ArrayList<>();
                cmd.add(exePath);
                cmd.add(ymlPath);
                if (CmdUtils.isProcessRunning(processName)) {
                    // 进程已经在运行，结束该进程
                    CmdUtils.stopProcess(processName);
                }
                // 启动后台进程
                CmdUtils.commandStart(processName, cmd, null);
                // 启动cmd窗口
//            String[] command = {"cmd","/c","start",exePath,ymlPath};
//            CmdUtils.commandStart(command);
            }
        }
    }

    @PreDestroy
    public void destroyMediaMtx() {
        if (mediamtxEnabled) {
            log.info("销毁mediaMtx");
            if (CmdUtils.isProcessRunning(processName)) {
                // 进程已经在运行，结束该进程
                CmdUtils.stopProcess(processName);
            }
        }
    }

    @Override
    public Map<String,String> addPath(String name, String sourceUrl, String mode, String isCode) {
        String rtspUrl = "rtsp://" + mediamtxHost + ":7554/" + name;
        String rtmpUrl = "rtmp://" + mediamtxHost + ":1935/" + name;
        String webrtcUrl = "http://" + mediamtxHost + ":8889/" + name;

        Conf mediaInfo = new Conf();
        String rootPath = System.getProperty("user.dir").replaceAll("\\\\", "/") + "/lib/mediamtx/";
        //-vcodec libx264 //指定视频编码器为 libx264，使用 H.264 编码格式进行视频压缩
        //-preset ultrafast  //--preset的参数主要调节编码速度和质量的平衡，有ultrafast（转码速度最快，视频往往也最模糊）、superfast、veryfast、faster、fast、medium、slow、slower、veryslow、placebo这10个选项，从快到慢
        //-r 25 //设置输出视频的帧率为 25 帧/秒
        //-g 20 //关键帧间隔20
        //-sc_threshold 0 //将其设置为0（-sc_threshold 0）禁用场景变化检测
        //-rtsp_transport tcp //这个选项告诉 FFmpeg 使用 TCP 作为 RTSP 的传输协议
        //-threads 4: 指定要使用的线程数为 4。//这允许 FFmpeg 在多核处理器上使用多个线程来进行视频编码，以加快速度。
        // -i //用于指定输入媒体文件或输入流的地址
        // -bf 0 禁用B帧，因为webrtc在网页调用时控制台一直输出 WebRTC doesn’t support H264 streams with B-frames
        //-f rtsp //这个选项告诉 FFmpeg 输出为 RTSP 格式。
        //CPU软解码编码
        //String cmd = rootPath + "/lib/mediamtx/" +"ffmpeg -rtsp_transport tcp -i " + rtspPath + " -vcodec libx264 -preset:v ultrafast -r 25 -threads 4  -b:v 2048k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
        //GPU硬解码编码 -hwaccel cuvid -c:v h264_cuvid  使用cuda解码   -c:v h264_nvenc 使用cuda编码
        //String cmd = rootPath  + "/lib/mediamtx/" + "ffmpeg -hwaccel cuvid -c:v h264_cuvid  -rtsp_transport udp  -i " + rtspPath + " -c:v h264_nvenc  -r 25 -threads 4  -b:v 2048k -bf 0 -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
        if (isCode.equals("1")) {
            String cmd =  "ffmpeg -rtsp_transport tcp -i " + sourceUrl + " -vcodec libx264 -preset:v ultrafast -r 25 -keyint_min 25 -g 25 -sc_threshold 0 -threads 6  -b:v 2048k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
            if (!softwareDecoding) {
                cmd =  "ffmpeg -hwaccel cuvid -c:v h264_cuvid  -rtsp_transport tcp  -i " + sourceUrl + " -c:v h264_nvenc  -r 25 -g 60 -threads 6  -b:v 2048k -bf 0 -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
            }
            if (mode.equals("0")) {
                mediaInfo.setRunondemand(cmd);
                mediaInfo.setRunondemandrestart(true);
                mediaInfo.setRunondemandcloseafter("5s");
            } else {
                mediaInfo.setRunoninit(cmd);
                mediaInfo.setRunoninitrestart(true);
            }
        } else {
            mediaInfo.setSource(sourceUrl);
        }
        mediaInfo.setMaxReaders(100);
        mediaInfo.setSourceprotocol("tcp");
        mediaClient.addPath(name, mediaInfo);
        Map<String,String> map=new HashMap<>();
        map.put("rtspUrl",rtspUrl);
        map.put("rtmpUrl",rtmpUrl);
        map.put("webrtcUrl",webrtcUrl);
        return map;
    }

    @Override
    public Map<String, String> editPath(String name, String sourceUrl, String mode, String isCode) {
        String rtspUrl = "rtsp://" + mediamtxHost + ":7554/" + name;
        String rtmpUrl = "rtmp://" + mediamtxHost + ":1935/" + name;
        String webrtcUrl = "http://" + mediamtxHost + ":8889/" + name;

        Conf mediaInfo = new Conf();
        String rootPath = System.getProperty("user.dir").replaceAll("\\\\", "/") + "/lib/mediamtx/";
        //-vcodec libx264 //指定视频编码器为 libx264，使用 H.264 编码格式进行视频压缩
        //-preset ultrafast  //--preset的参数主要调节编码速度和质量的平衡，有ultrafast（转码速度最快，视频往往也最模糊）、superfast、veryfast、faster、fast、medium、slow、slower、veryslow、placebo这10个选项，从快到慢
        //-r 25 //设置输出视频的帧率为 25 帧/秒
        //-g 20 //关键帧间隔20
        //-sc_threshold 0 //将其设置为0（-sc_threshold 0）禁用场景变化检测
        //-rtsp_transport tcp //这个选项告诉 FFmpeg 使用 TCP 作为 RTSP 的传输协议
        //-threads 4: 指定要使用的线程数为 4。//这允许 FFmpeg 在多核处理器上使用多个线程来进行视频编码，以加快速度。
        // -i //用于指定输入媒体文件或输入流的地址
        // -bf 0 禁用B帧，因为webrtc在网页调用时控制台一直输出 WebRTC doesn’t support H264 streams with B-frames
        //-f rtsp //这个选项告诉 FFmpeg 输出为 RTSP 格式。
        //CPU软解码编码
        //String cmd = rootPath + "/lib/mediamtx/" +"ffmpeg -rtsp_transport tcp -i " + rtspPath + " -vcodec libx264 -preset:v ultrafast -r 25 -threads 4  -b:v 2048k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
        //GPU硬解码编码 -hwaccel cuvid -c:v h264_cuvid  使用cuda解码   -c:v h264_nvenc 使用cuda编码
        //String cmd = rootPath  + "/lib/mediamtx/" + "ffmpeg -hwaccel cuvid -c:v h264_cuvid  -rtsp_transport udp  -i " + rtspPath + " -c:v h264_nvenc  -r 25 -threads 4  -b:v 2048k -bf 0 -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
        if (isCode.equals("1")) {
            mediaInfo.setSource("publisher");
            String cmd =  "ffmpeg -rtsp_transport tcp -i " + sourceUrl + " -vcodec libx264 -preset:v ultrafast -r 25 -keyint_min 25 -g 25 -sc_threshold 0 -threads 6  -b:v 2048k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
            if (!softwareDecoding) {
                cmd =  "ffmpeg -hwaccel cuvid -c:v h264_cuvid  -rtsp_transport tcp  -i " + sourceUrl + " -c:v h264_nvenc  -r 25 -g 60 -threads 6  -b:v 2048k -bf 0 -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";
            }
            if (mode.equals("0")) {
                mediaInfo.setRunondemand(cmd);
                mediaInfo.setRunondemandcloseafter("5s");
                mediaInfo.setRunondemandrestart(true);
                mediaInfo.setRunoninit("");
                mediaInfo.setRunoninitrestart(false);
            } else {
                mediaInfo.setRunoninit(cmd);
                mediaInfo.setRunoninitrestart(true);
                mediaInfo.setRunondemand("");
                mediaInfo.setRunondemandrestart(false);
            }
        } else {
            mediaInfo.setSource(sourceUrl);
            mediaInfo.setRunondemand("");
            mediaInfo.setRunondemandrestart(false);
            mediaInfo.setRunoninit("");
            mediaInfo.setRunoninitrestart(false);
        }
        mediaInfo.setMaxReaders(100);
        mediaInfo.setSourceprotocol("tcp");
        mediaClient.editPath(name, mediaInfo);
        Map<String,String> map=new HashMap<>();
        map.put("rtspUrl",rtspUrl);
        map.put("rtmpUrl",rtmpUrl);
        map.put("webrtcUrl",webrtcUrl);
        return map;
    }

    @Override
    public StreamInfo getPathInfo(String name) {
        Items item = mediaClient.getPathInfo(name);
        StreamInfo info = new StreamInfo();
        //ID
        info.setName(name);
        String runOn;
        if (StringUtils.isNotEmpty(item.getConf().getRunondemand())) {
            runOn = item.getConf().getRunondemand();
            info.setMode("0");
        } else {
            //runOn = item.getConf().getRunonready();
            runOn = item.getConf().getRunoninit();
            info.setMode("1");
        }
        //RTSP源地址
        Matcher matcher = Pattern.compile("rtsp://[^\\s\"]+").matcher(runOn);
        if (matcher.find()) {
            info.setRtspSource(matcher.group());
            info.setIsCode("1");
        } else {
            info.setRtspSource(item.getConf().getSource());
            info.setIsCode("0");
        }
        return info;
    }

    @Override
    public void removePath(String[] names) {
        for (String name : names) {
            mediaClient.removePath(name);
        }
    }

    @Override
    public List<StreamInfo> paths() {
        String list = mediaClient.paths();
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        List<Items> items = jsonsRoot.getItems();
        List<StreamInfo> pathInfoList = new ArrayList<>();
        for (Items item : items) {
            StreamInfo info = new StreamInfo();
            //ID
            String name = item.getName();
            info.setName(name);
            String runOn;
            if (StringUtils.isNotEmpty(item.getConf().getRunondemand())) {
                runOn = item.getConf().getRunondemand();
                info.setMode("0");
            } else {
                runOn = item.getConf().getRunoninit();
                //runOn = item.getConf().getRunonready();
                info.setMode("1");
            }
            //RTSP源地址
            Matcher matcher = Pattern.compile("rtsp://[^\\s\"]+").matcher(runOn);
            if (matcher.find()) {
                info.setRtspSource(matcher.group());
                info.setIsCode("1");
            } else {
                info.setRtspSource(item.getConf().getSource());
                info.setIsCode("0");
            }
            //传输协议
            matcher = Pattern.compile("-rtsp_transport\\s+(\\w+)").matcher(runOn);
            if (matcher.find()) {
                info.setProtocol(matcher.group(1));
            }

            pathInfoList.add(info);
        }
        return pathInfoList;
    }


    @Override
    public RtspSession getRtspSessionById(String sessionId) {
        String list = mediaClient.getRtspsessionById(sessionId);
        RtspSession rtspSession = JSONObject.parseObject(list, RtspSession.class);
        return rtspSession;
    }

    @Override
    public WebrtcSession getWebrtcSessionById(String sessionId) {
        String list = mediaClient.getWebrtcsessionById(sessionId);
        WebrtcSession webrtcSession = JSONObject.parseObject(list, WebrtcSession.class);
        return webrtcSession;
    }

    @Override
    public RtmpSession getRtmpSessionById(String sessionId) {
        String list = mediaClient.getRtmpsessionById(sessionId);
        RtmpSession rtmpSession = JSONObject.parseObject(list, RtmpSession.class);
        return rtmpSession;
    }

    /**
     * 获取推流列表
     * 刘苏义
     * 2023/8/29 9:37:05
     */
    @Override
    public List<StreamInfo> getPushStreamList() {
        List<StreamInfo> PushStreamInfoList = new ArrayList<>();
        String list = mediaClient.paths();
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        List<Items> items = jsonsRoot.getItems();
        for (Items item : items) {
            StreamInfo info = new StreamInfo();
            //ID
            String name = item.getName();
            info.setName(name);
            //RTMP播放地址
            String rtmpUrl = "rtmp://" + mediamtxHost + ":1935/" + name;
            info.setRtmpUrl(rtmpUrl);
            //RTSP播放地址
            String rtspUrl = "rtsp://" + mediamtxHost + ":7554/" + name;
            info.setRtspUrl(rtspUrl);
            //WEBRTC播放地址
            String webrtcUrl = "http://" + mediamtxHost + ":8889/" + name;
            info.setWebrtcUrl(webrtcUrl);
            Source source = item.getSource();
            if (source == null || source.getId().equals("")) {
                //会话ID
                info.setId("0");
                //上行流量
                long bytesReceived = item.getBytesReceived();
                String formatReceivedSize = ArdTool.formatFileSize(bytesReceived);
                info.setUpTraffic(formatReceivedSize);
            } else {
                RtspSession rtspSession = getRtspSessionById(source.getId());
                //会话ID
                info.setId(rtspSession.getId());
                //开始推流时间
                info.setBeginTime(rtspSession.getCreated());
                //上行流量
                long bytesReceived = rtspSession.getBytesReceived();
                String formatReceivedSize = ArdTool.formatFileSize(bytesReceived);
                info.setUpTraffic(formatReceivedSize);
                //下行流量
                long bytesSent = rtspSession.getBytesSent();
                String formatSentSize = ArdTool.formatFileSize(bytesSent);
                info.setDownTraffic(formatSentSize);
                //推流服务器
                info.setRemoteAddr(rtspSession.getRemoteAddr());
            }
            //RTSP源地址
            String runOn;
            if (StringUtils.isNotEmpty(item.getConf().getRunondemand())) {
                runOn = item.getConf().getRunondemand();
            } else {
                runOn = item.getConf().getRunoninit();
                //runOn = item.getConf().getRunonready();
            }
            Matcher matcher = Pattern.compile("rtsp://[^\\s\"]+").matcher(runOn);
            if (matcher.find()) {
                info.setRtspSource(matcher.group());
            } else {
                info.setRtspSource(item.getConf().getSource());
            }
            //传输协议
            info.setProtocol(item.getConf().getSourceprotocol());
            //拉流数量
            List<Readers> readers = item.getReaders();
            info.setNum(readers.size());

            PushStreamInfoList.add(info);
        }
        return PushStreamInfoList;
    }

    /**
     * 获取拉流列表
     * 刘苏义
     * 2023/8/29 9:37:05
     */
    @Override
    public List<StreamInfo> getPullStreamList() {
        List<StreamInfo> PullStreamInfoList = new ArrayList<>();
        String list = mediaClient.paths();
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        List<Items> items = jsonsRoot.getItems();
        for (Items item : items) {
            List<Readers> readers = item.getReaders();
            for (Readers reader : readers) {
                StreamInfo info = new StreamInfo();
                //ID
                String name = item.getName();
                info.setName(name);
                //传输协议
                info.setProtocol(item.getConf().getSourceprotocol());

                String type = reader.getType();
                switch (type) {
                    case "rtmpConn":
                        info.setSessionType("rtmp");
                        //webrtc播放地址
                        String url = "rtmp://" + mediamtxHost + ":1935/" + name;
                        info.setRtspUrl(url);
                        RtmpSession rtmpSession = getRtmpSessionById(reader.getId());
                        //会话ID
                        info.setId(rtmpSession.getId());
                        //开始拉流时间
                        info.setBeginTime(rtmpSession.getCreated());
                        //上行流量
                        long bytesReceived = rtmpSession.getBytesReceived();
                        String formatReceivedSize = ArdTool.formatFileSize(bytesReceived);
                        info.setUpTraffic(formatReceivedSize);
                        //下行流量
                        long bytesSent = rtmpSession.getBytesSent();
                        String formatSentSize = ArdTool.formatFileSize(bytesSent);
                        info.setDownTraffic(formatSentSize);
                        //拉流服务器
                        info.setRemoteAddr(rtmpSession.getRemoteAddr());
                        PullStreamInfoList.add(info);
                        break;
                    case "webRTCSession":
                        info.setSessionType("webrtc");
                        //webrtc播放地址
                        url = "http://" + mediamtxHost + ":8889/" + name;
                        info.setRtspUrl(url);
                        WebrtcSession webrtcSession = getWebrtcSessionById(reader.getId());
                        //会话ID
                        info.setId(webrtcSession.getId());
                        //开始拉流时间
                        info.setBeginTime(webrtcSession.getCreated());
                        //上行流量
                        bytesReceived = webrtcSession.getBytesReceived();
                        formatReceivedSize = ArdTool.formatFileSize(bytesReceived);
                        info.setUpTraffic(formatReceivedSize);
                        //下行流量
                        bytesSent = webrtcSession.getBytesSent();
                        formatSentSize = ArdTool.formatFileSize(bytesSent);
                        info.setDownTraffic(formatSentSize);
                        //拉流服务器
                        info.setRemoteAddr(webrtcSession.getRemoteAddr());
                        PullStreamInfoList.add(info);
                        break;
                    case "rtspSession":
                        info.setSessionType("rtsp");
                        //RTSP播放地址
                        String rtspUrl = "rtsp://" + mediamtxHost + ":8554/" + name;
                        info.setRtspUrl(rtspUrl);
                        RtspSession rtspSession = getRtspSessionById(reader.getId());
                        //会话ID
                        info.setId(rtspSession.getId());
                        //开始拉流时间
                        info.setBeginTime(rtspSession.getCreated());
                        //上行流量
                        bytesReceived = rtspSession.getBytesReceived();
                        formatReceivedSize = ArdTool.formatFileSize(bytesReceived);
                        info.setUpTraffic(formatReceivedSize);
                        //下行流量
                        bytesSent = rtspSession.getBytesSent();
                        formatSentSize = ArdTool.formatFileSize(bytesSent);
                        info.setDownTraffic(formatSentSize);
                        //拉流服务器
                        info.setRemoteAddr(rtspSession.getRemoteAddr());
                        PullStreamInfoList.add(info);
                        break;
                }
            }
        }
        Comparator<StreamInfo> comparator = Comparator.comparing(streamInfo -> streamInfo.getBeginTime()); // 使用Collections.sort方法进行排序 Collections.sort(personList, comparator);
        Collections.sort(PullStreamInfoList, comparator.reversed());
        return PullStreamInfoList;
    }

    /**
     * 踢出rtsp会话
     * 刘苏义
     * 2023/8/29 9:37:05
     */
    @Override
    public Boolean kickRtspSession(String sessionId) {
        try {
            mediaClient.kickRtspSessions(sessionId);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }

    /**
     * 踢出rtmp会话
     * 刘苏义
     * 2023/8/29 9:37:05
     */
    @Override
    public Boolean kickRtmpSession(String sessionId) {
        try {
            mediaClient.kickRtmpSessions(sessionId);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }

    /**
     * 踢出webrtc会话
     * 刘苏义
     * 2023/8/29 9:37:05
     */
    @Override
    public Boolean kickWebrtcSession(String sessionId) {
        try {
            mediaClient.kickWebrtcSessions(sessionId);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }

}