package utils;

import cn.hutool.core.util.RuntimeUtil;
import com.alibaba.fastjson.JSON;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.http.HttpUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.PreDestroy;
import java.io.*;
import java.util.Date;
import java.util.concurrent.ConcurrentHashMap;

/**
 * rtsp 转 hlv协议
 *
 * @author kzw
 */
@Service
@Slf4j
@EnableScheduling
public class RtspConvert {
    //转换map
    private static ConcurrentHashMap<String, CoverThread> coverMap = new ConcurrentHashMap<>();
    //拉流命令
    private static final String ffmpegCmd = "ffmpeg -i \"%s\" -c copy -f hls -hls_time 5.0 -hls_list_size 2 -hls_flags 2 %s";

    //ffmpeg -i "rtsp://admin:admin123@192.168.1.40:554/stream/realtime?channel=1&streamtype=0" -c copy -f hls -hls_time 4.0 -hls_list_size 2 -hls_flags 2 "D:\video\test.m3u8"
    @PreDestroy
    public void closeProcess() {
        log.info("关闭ffmpeg转换进程，java程序不一定关闭process进程");
        closeAllProcess();
        for (String ip : coverMap.keySet()) {
            try {
                log.error("开始停止{}", ip);
                coverMap.get(ip).stopTask();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * ffmpeg -i "rtsp://admin:xxx@192.168.0.251:554/Streaming/Channels/101" -c copy -f hls -hls_time 5.0 -hls_list_size 5 -hls_flags 2 F:\resources\hls\2000\live.m3u8
     */
    /**
     * 检查设备ip是否能正常访问
     */
    private boolean checkDeviceOnline(String ip) {
        String res = HttpUtils.sendGet("http://" + ip);
        if (StringUtils.isNotBlank(res)) {
            return true;
        }
        return false;
    }

    /**
     * 转换rtsp并获取hls文件路径
     * 视频地址  http.../control-api/upload/hls/{ip}/live.m3u8
     */
    public String rtsp2Hls(String ip, String userName, String pwd) {
        System.out.println(JSON.toJSON(coverMap));
        if (coverMap.containsKey(ip)) {
            CoverThread thread = coverMap.get(ip);
            if (thread == null || thread.getTaskState() != CoverThread.running) {
            } else {
                return StringUtils.replace(thread.getM3U8File(), RuoYiConfig.getProfile(), "");
            }
        }
        String rtspUrl = "rtsp://" + userName + ":" + pwd + "@" + ip + ":554/stream/realtime?channel=1&streamtype=0";
        String m3u8File = RuoYiConfig.getProfile() + File.separator+"upload" + File.separator + "hls"
//        String m3u8File = "D:" + File.separator + "ruoyi" + File.separator + "uploadPath" + File.separator + "hls"
                + File.separator + ip.replaceAll("\\.", "_") + File.separator + "live.m3u8";
        startTransform(ip, rtspUrl, m3u8File, userName, pwd);
        CoverThread thread = coverMap.get(ip);
        if (thread != null) {
            return StringUtils.replace(thread.getM3U8File(), RuoYiConfig.getProfile(), "");
        }
        return null;
    }

    /**
     * 开启转换
     */
    private void startTransform(String ip, String rtspUrl, String m3u8Path, String userName, String pwd) {
        log.info("转换rtsp, {},{},{}", ip, rtspUrl, m3u8Path);
        String memKey = "startLive" + ip;
        synchronized (memKey.intern()) {
            if (coverMap.containsKey(ip)) {
                stopTransform(ip);
            }
            CoverThread thread = new CoverThread(ip, rtspUrl, m3u8Path, userName, pwd);
            coverMap.put(ip, thread);
            thread.start();
        }
    }

    /**
     * 停止转换
     */
    public void stopTransform(String ip) {
        String memKey = "startLive" + ip;
        synchronized (memKey.intern()) {
            System.out.println(JSON.toJSON(coverMap));
            if (coverMap.containsKey(ip)) {
                CoverThread thread = coverMap.get(ip);
                if (thread != null && thread.getTaskState() != CoverThread.fail) {
                    System.out.println("停止转换ip"+ip);
                    thread.stopTask();
                }
            }
        }
    }

    /**
     * 监控所有的转换线程
     */
    @Scheduled(cron = "0 0/8 * * * ?")
    public synchronized void monitorThreads() {
        for (String ip : coverMap.keySet()) {
            CoverThread thread = coverMap.get(ip);
            if (thread != null && thread.getTaskState() != CoverThread.running) {
                //线程出现异常
                rtsp2Hls(ip, thread.getUserName(), thread.getPwd());
            }
        }
    }

    public void closeAllProcess(){
        String command = "taskkill /f /im ffmpeg.exe";
        if(!isWin()){
            command = "/usr/local/water-monitor-api/closeFFmpeg.sh";
        }
        System.out.println("command ["+command+"]");
        String result = RuntimeUtil.execForStr(command);
        System.out.println("command result ["+result+"]");
        coverMap.clear();
    }

    public boolean isWin(){
        String os = System.getProperty("os.name");
        return os.toLowerCase().startsWith("win");
    }

    public class RunThread extends Thread {
        private InputStream is;
        private String printType;

        RunThread(InputStream is, String printType) {
            this.is = is;
            this.printType = printType;
        }

        @Override
        public void run() {
            try {
                InputStreamReader isr = new InputStreamReader(is);
                BufferedReader br = new BufferedReader(isr);
                String line;
                while ((line = br.readLine()) != null) {
                    log.info(printType + ">" + line);
                }
            } catch (IOException ioe) {
                log.info("RunThread error:", ioe);
            }
        }
    }

    /**
     * 执行命令线程
     */
    private class CoverThread extends Thread {
        private String ip;
        private String rtspUrl;
        private String m3u8File;
        private String userName;
        private String pwd;
        private int taskState = 0; //运行状态 0未开始 1进行中 -1失败
        private static final int notStart = 0;
        private static final int running = 1;
        private static final int fail = -1;
        private Process process = null;

        CoverThread(String ip, String rtspUrl, String m3u8File, String userName, String pwd) {
            this.ip = ip;
            this.rtspUrl = rtspUrl;
            this.m3u8File = m3u8File;
            this.userName = userName;
            this.pwd = pwd;
            setName("m3u8-" + ip);
            this.taskState = notStart;
        }

        @Override
        public void run() {
            try {
                FileUtils.forceMkdir(new File(m3u8File).getParentFile());
                if (!checkDeviceOnline(ip)) {
                    log.warn("设备{},离线", ip);
                    this.taskState = fail;
                    return;
                }
                String command = String.format(ffmpegCmd, rtspUrl, m3u8File);
                this.taskState = running;

                //判断是操作系统是linu2x还是windows
                String[] comds;
                if (isWin()) {
                    comds = new String[]{"cmd", "/c", command};
//                    comds = new String[]{"cmd", "/c", "start", "/b", "cmd.exe", "/k", command};
                } else {
                    comds = new String[]{"/bin/sh", "-c", command};
                }

                // 开始执行命令
                log.info("执行命令：" + command);
                process = Runtime.getRuntime().exec(comds);

                //开启线程监听（此处解决 waitFor() 阻塞/锁死 问题）
                new RunThread(process.getInputStream(), "INFO").start();
                new RunThread(process.getErrorStream(), "ERROR").start();
                int flag = process.waitFor();
                log.info("结束{}", ip);
            } catch (Exception e) {
                log.error("出现异常" + e.getMessage(), e);
                this.taskState = fail;
            } finally {
                if (process != null) {
                    try {
                        process.exitValue();
                    } catch (Exception e) {
                    }
                    try {
                        process.destroyForcibly();
                    } catch (Exception e) {
                    }
                }
            }
        }



        /**
         * 获取任务执行状态
         */
        public int getTaskState() {
            return taskState;
        }

        /**
         * 立即停止任务
         */
        public void stopTask() {
            if (process != null) {
                try {
                    process.destroy();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

        public String getM3U8File() {
            return this.m3u8File;
        }

        public String getUserName() {
            return userName;
        }

        public String getPwd() {
            return pwd;
        }
    }

    public void openTask(){

    }



    public static void main(String[] args) throws Exception {
        RtspConvert convert = new RtspConvert();
        convert.closeAllProcess();
        String ip = "192.168.1.40";
        String userName = "admin";
        String pwd = "admin123";
        String m3u8 = convert.rtsp2Hls(ip, userName, pwd);
        System.out.println("***********************************" + m3u8);
//        Thread.sleep(10 * 1000);
//        convert.stopTransform(ip);
//        System.out.println("************************************结束**************");
    }
}