package com.ruoyi.media.service.impl;

import com.alibaba.fastjson2.JSONObject;
import com.ruoyi.media.domain.*;
import com.ruoyi.media.service.IMediaService;
import com.ruoyi.utils.forest.MediaClient;
import com.ruoyi.utils.tools.ArdTool;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @Description:
 * @ClassName: MediaService
 * @Author: 刘苏义
 * @Date: 2023年07月13日9:28
 * @Version: 1.0
 **/
@Service
public class MediaService implements IMediaService {

    @Resource
    MediaClient mediaClient;

    @Value("${mediamtx.host}")
    String mediamtxHost;

    @Override
    public String addPath(String name, String rtspPath) {
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String rtspUrl = "rtsp://" + mediamtxHost + ":8554/";
        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";
//        mediaInfo.setRunoninit(cmd);
//        mediaInfo.setRunoninitrestart(true);
        mediaInfo.setRunondemand(cmd);
        mediaInfo.setRunondemandrestart(true);
        mediaClient.addPath(apiUrl, name, mediaInfo);
        return rtspUrl + name;
    }

    @Override
    public void removePath(String name) {
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        mediaClient.removePath(apiUrl, name);
    }

    @Override
    public List<Items> paths() {
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.paths(apiUrl);
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        return jsonsRoot.getItems();
    }

    @Override
    public List<Items> rtspconns() {
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.rtspconns(apiUrl);
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        return jsonsRoot.getItems();
    }

    @Override
    public List<Items> rtspsessions() {
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.rtspsessions(apiUrl);
        JsonsRoot jsonsRoot = JSONObject.parseObject(list, JsonsRoot.class);
        return jsonsRoot.getItems();
    }

    @Override
    public RtspSession getRtspSessionById(String sessionId) {
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.getRtspsessionById(apiUrl, sessionId);
        RtspSession rtspSession = JSONObject.parseObject(list, RtspSession.class);
        return rtspSession;
    }

    @Override
    public List<RtspSession> getPushStreams() {
        List<RtspSession> rtspSessions = new ArrayList<>();
        String apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.paths(apiUrl);
        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 apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.paths(apiUrl);
        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 apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.paths(apiUrl);
        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);
            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 runoninit = item.getConf().getRunoninit();
            String runoninit = item.getConf().getRunondemand();
            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 apiUrl = "http://" + mediamtxHost + ":9997/v2";
        String list = mediaClient.paths(apiUrl);
        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 {
            String apiUrl = "http://" + mediamtxHost + ":9997/v2";
            mediaClient.kick(apiUrl, sessionId);
            return true;
        } catch (Exception ex) {
            return false;
        }
    }
}