using System;
using System.Net;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace FileSystemApi
{
    [ComImport, Guid("F0D5AFD8-DA24-4e85-9335-BEBCADE5B92A"),
    ClassInterface(ClassInterfaceType.None)]
    internal class FileSystemClass
    {
    }

    [StructLayout(LayoutKind.Sequential)]
    internal struct FILETIME
    {
        public uint dwLowDateTime;
        public uint dwHighDateTime;
    };

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
    internal struct WIN32_FIND_DATA
    {
        public FileAttributes dwFileAttributes;
        public FILETIME ftCreationTime;
        public FILETIME ftLastAccessTime;
        public FILETIME ftLastWriteTime;
        public int nFileSizeHigh;
        public int nFileSizeLow;
        public int dwReserved0;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
        public string cFileName;
    }

    [ComImport, Guid("2C49FA3D-C6B7-4168-BE80-D044A9C0D9DD"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    internal interface IFileSystemIO
    {
        [PreserveSig]
        int OpenFile(string lpFilename, int dwDesiredAccess, int dwShareMode, int dwCreationDisposition, int dwFlagsAndAttributes, out IntPtr hFile);

        [PreserveSig]
        int ReadFile(IntPtr hfile, IntPtr lpBuffer, int nNumberOfBytesToRead, out int lpNumberOfBytesRead);

        [PreserveSig]
        int CloseFile(IntPtr hFile);

        [PreserveSig]
        int SeekFile(IntPtr hFile, int lDistanceToMove, ref int lpDistanceToMoveHigh, int dwMoveMethod);

        [PreserveSig]
        int GetFileSize(IntPtr hFile, out int lpFileSizeHigh);

        [PreserveSig]
        int CopyFile(string lpExistingFileName, string lpNewFileName, bool bFailIfExists);

        [PreserveSig]
        int FindFirstFile(string lpFileName, out WIN32_FIND_DATA lpFindFileData, out IntPtr hFind);

        [PreserveSig]
        int FindNextFile(IntPtr hFind, out WIN32_FIND_DATA lpFindFileData);

        [PreserveSig]
        int FindClose(IntPtr hFind);
    }
}