using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

using Yaulw.File;

namespace Yaulw.Other
{
    /// <remarks>
    /// Usefull for quickly generating a .bat file and executing it (without a command window)
    /// </remarks>
    public static class CMDexecute
    {
        #region Public Static Methods

        /// <summary>
        /// Executes the passed in command on the command line * No Command Window Created *
        /// </summary>
        /// <param name="command">a command-line command</param>
        /// <param name="bWait">true to wait till process ends, false otherwise</param>
        /// <param name="bUseRunAs">If true, will set "RunAs" For the Process, to Run as Administrator</param>
        public static void cmd(string command, bool bWait = true, bool bRunAs = false)
        {
            FileWriter fileW = new FileWriter(String.Empty, "bat");
            fileW.DeleteFile();
            fileW.WriteLineUTF8(command);
            execBatFile(fileW.FileNameNPath, bWait, bRunAs);
            fileW.DeleteFile();            
        }

        /// <summary>
        /// Executes the passed in commands on the command line * No Command Window Created *
        /// </summary>
        /// <param name="commands">command-line commands</param>
        /// <param name="bWait">true to wait till process ends, false otherwise</param>
        /// <param name="bUseRunAs">If true, will set "RunAs" For the Process, to Run as Administrator</param>
        public static void cmd(string[] commands, bool bWait = true, bool bRunAs = false)
        {
            FileWriter fileW = new FileWriter(String.Empty, "bat");
            fileW.DeleteFile();
            foreach (string command in commands)
                     fileW.WriteLineUTF8(command);
            execBatFile(fileW.FileNameNPath, bWait, bRunAs);
            fileW.DeleteFile();            
        }

        #endregion

        #region Private Static Helpers

        /// <summary>
        /// Executes the Batch file via CMD.exe, by starting the CMD.exe Process with no Window
        /// </summary>
        /// <param name="FileNameNPath">File (.bat) scrip to execute</param>
        /// <param name="bWait">true to wait till process ends, false otherwise</param>
        private static void execBatFile(string FileNameNPath, bool bWait = true, bool bUseRunAs = false)
        {
            if (!String.IsNullOrEmpty(FileNameNPath) && System.IO.File.Exists(FileNameNPath))
            {                
                //The "/C" Tells Windows to Run The Command then Terminate 
                string strCmdLine = "/C " + '\"' + FileNameNPath + '\"';
                string WindowsSystem32Folder = System.Environment.GetFolderPath(Environment.SpecialFolder.System);
                System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo((WindowsSystem32Folder + "\\" + "CMD.exe"), strCmdLine);                
                //startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
                startInfo.CreateNoWindow = true;
                startInfo.UseShellExecute = false;
                startInfo.WorkingDirectory = Path.GetDirectoryName(FileNameNPath);
                if (bUseRunAs)
                    startInfo.Verb = "runas";

                // Start the Cmd.exe Process
                System.Diagnostics.Process p1;
                p1 = System.Diagnostics.Process.Start(startInfo);
                if(bWait)
                   p1.WaitForExit();
            }
        }

        #endregion
    }
}