using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Ultron.Ngrok.Utils
{
    public class CmdUtils
    {
        public delegate void ProcessInfomation(int id, string message);

        public event ProcessInfomation ProcessMessageEvent;
        public event EventHandler ProcessKilled;

        Process cmd = new Process();

        public bool IsInited = false;

        public CmdUtils()
        {
            Control.CheckForIllegalCrossThreadCalls = false;

        }

        public void Init()
        {
            cmd = new Process();//创建进程对象  
            ProcessStartInfo startInfo = new ProcessStartInfo();
            startInfo.FileName = "cmd.exe";//设定需要执行的命令  
            startInfo.Arguments = "";//“/C”表示执行完命令后马上退出  
            startInfo.UseShellExecute = false;//不使用系统外壳程序启动  
            startInfo.RedirectStandardInput = true;//不重定向输入  
            startInfo.RedirectStandardOutput = true; //重定向输出  
            startInfo.CreateNoWindow = false;//不创建窗口  

            cmd.StartInfo = startInfo;

            cmd.EnableRaisingEvents = true;

            cmd.OutputDataReceived -= new DataReceivedEventHandler(OutputHandler);
            cmd.OutputDataReceived += new DataReceivedEventHandler(OutputHandler);
            cmd.Exited += ProcessKilled;

            cmd.Start();
            cmd.BeginOutputReadLine();
        }

        void cmd_Exited(object sender, EventArgs e)
        {

        }

        private void OutputHandler(object sender, DataReceivedEventArgs e)
        {
            if (!String.IsNullOrEmpty(e.Data))
            {
                ProcessMessageEvent(cmd.Id, e.Data);
            }
        }

        public void SendMsg(string cmdStr)
        {
            ProcessMessageEvent(0, "开始运行...");
            if (!IsInited || cmd.HasExited)
            {
                cmd = new Process();//创建进程对象  
                ProcessStartInfo startInfo = new ProcessStartInfo();
                startInfo.FileName = "cmd.exe";//设定需要执行的命令  
                startInfo.Arguments = "";//“/C”表示执行完命令后马上退出  
                startInfo.UseShellExecute = false;//不使用系统外壳程序启动  
                startInfo.RedirectStandardInput = true;//不重定向输入  
                startInfo.RedirectStandardOutput = true; //重定向输出  
                startInfo.CreateNoWindow = false;//不创建窗口  

                cmd.StartInfo = startInfo;

                cmd.EnableRaisingEvents = true;

                cmd.OutputDataReceived -= new DataReceivedEventHandler(OutputHandler);
                cmd.OutputDataReceived += new DataReceivedEventHandler(OutputHandler);

                cmd.Exited += ProcessKilled;
                cmd.Start();
                cmd.BeginOutputReadLine();

                IsInited = true;
            }
            cmd.StandardInput.WriteLine(cmdStr);
        }

        public void CloseCmd()
        {
            if (cmd != null && !cmd.HasExited)
                cmd.Kill() ;
        }
    }
}