package com.ruoyi.media.service.impl;

import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.media.domain.*;
import com.ruoyi.media.service.IMediaService;
import com.ruoyi.utils.forest.MediaClient;
import com.ruoyi.utils.tools.ArdTool;
import com.ruoyi.utils.tools.CmdUtils;
import com.sun.jna.Platform;
import io.minio.messages.Item;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.annotation.Resource;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
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")
public class MediaService implements IMediaService {

    @Resource
    MediaClient mediaClient;
    @Value("${mediamtx.host}")
    String mediamtxHost;
    @Value("${mediamtx.enabled}")
    Boolean mediamtxEnabled;

    String processName = "mediamtx.exe";

    @PostConstruct
    public void initMediaMtx() {
        if (mediamtxEnabled) {
            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() {
        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 String addPath(String name, String rtspPath, String mode) {
        String rtspUrl = "rtsp://" + mediamtxHost + ":7554/";
        Conf mediaInfo = new Conf();
        //-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
        //-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
        //-f rtsp //这个选项告诉 FFmpeg 输出为 RTSP 格式。
        //CPU软解码编码
        String cmd = "ffmpeg -rtsp_transport tcp -i \"" + rtspPath + "\" -vcodec libx264 -preset:v ultrafast -r 25 -threads 4  -b:v 4096k -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 = "ffmpeg -hwaccel cuvid -c:v h264_cuvid  -rtsp_transport udp  -i \"" + rtspPath + "\" -c:v h264_nvenc  -r 25 -threads 4  -b:v 4096k -f rtsp rtsp://localhost:$RTSP_PORT/$MTX_PATH";

        if (mode.equals("1")) {
            mediaInfo.setRunondemand(cmd);
            mediaInfo.setRunondemandrestart(true);
        } else {
            mediaInfo.setRunoninit(cmd);
            mediaInfo.setRunoninitrestart(true);
        }
        mediaClient.addPath(name, mediaInfo);
        return rtspUrl + name;
    }

    @Override
    public StreamInfo getPathInfo(String name) {
        Items item = mediaClient.getPathInfo(name);
        StreamInfo info = new StreamInfo();
        //ID
        info.setName(name);
        String runoninit;
        String runondemand = item.getConf().getRunondemand();
        if (StringUtils.isNotEmpty(runondemand)) {
            runoninit = item.getConf().getRunondemand();
            info.setMode("1");
        } else {
            runoninit = item.getConf().getRunoninit();
            info.setMode("2");
        }
        //RTSP源地址
        String regex = "rtsp://[^\\s\"]+";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(runoninit);
        if (matcher.find()) {
            info.setRtspSource(matcher.group());
        }
        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 runoninit;
            String runondemand = item.getConf().getRunondemand();
            if (StringUtils.isNotEmpty(runondemand)) {
                runoninit = item.getConf().getRunondemand();
                info.setMode("1");
            } else {
                runoninit = item.getConf().getRunoninit();
                info.setMode("2");
            }
            //RTSP源地址
            String regex = "rtsp://[^\\s\"]+";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(runoninit);
            if (matcher.find()) {
                info.setRtspSource(matcher.group());
            }
            //传输协议
            regex = "-rtsp_transport\\s+(\\w+)";
            pattern = Pattern.compile(regex);
            matcher = pattern.matcher(runoninit);
            if (matcher.find()) {
                info.setProtocol(matcher.group(1));
            }

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

    @Override
    public List<Items> rtspconns() {
        String list = mediaClient.rtspconns();
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        return jsonsRoot.getItems();
    }

    @Override
    public List<Items> rtspsessions() {
        String list = mediaClient.rtspsessions();
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        return jsonsRoot.getItems();
    }

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

    @Override
    public List<RtspSession> getPushStreams() {
        List<RtspSession> rtspSessions = new ArrayList<>();

        String list = mediaClient.paths();
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        List<Items> items = jsonsRoot.getItems();
        for (Items item : items) {
            Source source = item.getSource();
            RtspSession rtspSession = getRtspSessionById(source.getId());
            rtspSession.setName(item.getName());
            rtspSessions.add(rtspSession);
        }
        return rtspSessions;
    }

    @Override
    public List<RtspSession> getPullStreams() {
        List<RtspSession> rtspSessions = 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) {
                RtspSession rtspSession = getRtspSessionById(reader.getId());
                rtspSession.setName(item.getName());
                rtspSessions.add(rtspSession);
            }
        }
        return rtspSessions;
    }

    @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);
            //RTSP播放地址
            String rtspUrl = "rtsp://" + mediamtxHost + ":7554/" + name;
            info.setRtspUrl(rtspUrl);
            Source source = item.getSource();
            if (source == null) {
                continue;
            }
            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);
            //RTSP源地址
            String runondemand = item.getConf().getRunondemand();
            String runoninit;
            if (StringUtils.isNotEmpty(runondemand)) {
                runoninit = item.getConf().getRunondemand();
            } else {
                runoninit = item.getConf().getRunoninit();
            }
            String regex = "rtsp://[^\\s\"]+";
            Pattern pattern = Pattern.compile(regex);
            Matcher matcher = pattern.matcher(runoninit);
            if (matcher.find()) {
                info.setRtspSource(matcher.group());
            }
            //传输协议
            regex = "-rtsp_transport\\s+(\\w+)";
            pattern = Pattern.compile(regex);
            matcher = pattern.matcher(runoninit);
            if (matcher.find()) {
                info.setProtocol(matcher.group(1));
            }
            //拉流数量
            List<Readers> readers = item.getReaders();
            info.setNum(readers.size());
            //推流服务器
            info.setRemoteAddr(rtspSession.getRemoteAddr());

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

    @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) {
            StreamInfo info = new StreamInfo();
            //ID
            String name = item.getName();
            info.setName(name);
            //RTSP播放地址
            String rtspUrl = "rtsp://" + mediamtxHost + ":8554/" + name;
            info.setRtspUrl(rtspUrl);
            List<Readers> readers = item.getReaders();
            for (Readers reader : readers) {
                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
                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);

                //传输协议
                String runoninit = item.getConf().getRunondemand();
                String regex = "-rtsp_transport\\s+(\\w+)";
                Pattern pattern = Pattern.compile(regex);
                Matcher matcher = pattern.matcher(runoninit);
                if (matcher.find()) {
                    info.setProtocol(matcher.group(1));
                }
                //拉流服务器
                info.setRemoteAddr(rtspSession.getRemoteAddr());
                PullStreamInfoList.add(info);
            }
        }
        return PullStreamInfoList;
    }

    @Override
    public Boolean kickRtspSession(String sessionId) {
        try {
            mediaClient.kick(sessionId);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }
}