using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace HidLibrary
{
    internal static class NativeMethods
    {
        internal struct OVERLAPPED
        {
            public int Internal;

            public int InternalHigh;

            public int Offset;

            public int OffsetHigh;

            public int hEvent;
        }

        internal struct SECURITY_ATTRIBUTES
        {
            public int nLength;

            public IntPtr lpSecurityDescriptor;

            public bool bInheritHandle;
        }

        [StructLayout(LayoutKind.Sequential)]
        internal class DEV_BROADCAST_DEVICEINTERFACE
        {
            internal int dbcc_size;

            internal int dbcc_devicetype;

            internal int dbcc_reserved;

            internal Guid dbcc_classguid;

            internal short dbcc_name;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
        internal class DEV_BROADCAST_DEVICEINTERFACE_1
        {
            internal int dbcc_size;

            internal int dbcc_devicetype;

            internal int dbcc_reserved;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16, ArraySubType = UnmanagedType.U1)]
            internal byte[] dbcc_classguid;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 255)]
            internal char[] dbcc_name;
        }

        [StructLayout(LayoutKind.Sequential)]
        internal class DEV_BROADCAST_HANDLE
        {
            internal int dbch_size;

            internal int dbch_devicetype;

            internal int dbch_reserved;

            internal int dbch_handle;

            internal int dbch_hdevnotify;
        }

        [StructLayout(LayoutKind.Sequential)]
        internal class DEV_BROADCAST_HDR
        {
            internal int dbch_size;

            internal int dbch_devicetype;

            internal int dbch_reserved;
        }

        internal struct SP_DEVICE_INTERFACE_DATA
        {
            internal int cbSize;

            internal Guid InterfaceClassGuid;

            internal int Flags;

            internal IntPtr Reserved;
        }

        internal struct SP_DEVINFO_DATA
        {
            internal int cbSize;

            internal Guid ClassGuid;

            internal int DevInst;

            internal IntPtr Reserved;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        internal struct SP_DEVICE_INTERFACE_DETAIL_DATA
        {
            internal int Size;

            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
            internal string DevicePath;
        }

        internal struct DEVPROPKEY
        {
            public Guid fmtid;

            public ulong pid;
        }

        internal struct HIDD_ATTRIBUTES
        {
            internal int Size;

            internal ushort VendorID;

            internal ushort ProductID;

            internal short VersionNumber;
        }

        internal struct HIDP_CAPS
        {
            internal short Usage;

            internal short UsagePage;

            internal short InputReportByteLength;

            internal short OutputReportByteLength;

            internal short FeatureReportByteLength;

            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 17)]
            internal short[] Reserved;

            internal short NumberLinkCollectionNodes;

            internal short NumberInputButtonCaps;

            internal short NumberInputValueCaps;

            internal short NumberInputDataIndices;

            internal short NumberOutputButtonCaps;

            internal short NumberOutputValueCaps;

            internal short NumberOutputDataIndices;

            internal short NumberFeatureButtonCaps;

            internal short NumberFeatureValueCaps;

            internal short NumberFeatureDataIndices;
        }

        internal struct HIDP_VALUE_CAPS
        {
            internal short UsagePage;

            internal byte ReportID;

            internal int IsAlias;

            internal short BitField;

            internal short LinkCollection;

            internal short LinkUsage;

            internal short LinkUsagePage;

            internal int IsRange;

            internal int IsStringRange;

            internal int IsDesignatorRange;

            internal int IsAbsolute;

            internal int HasNull;

            internal byte Reserved;

            internal short BitSize;

            internal short ReportCount;

            internal short Reserved2;

            internal short Reserved3;

            internal short Reserved4;

            internal short Reserved5;

            internal short Reserved6;

            internal int LogicalMin;

            internal int LogicalMax;

            internal int PhysicalMin;

            internal int PhysicalMax;

            internal short UsageMin;

            internal short UsageMax;

            internal short StringMin;

            internal short StringMax;

            internal short DesignatorMin;

            internal short DesignatorMax;

            internal short DataIndexMin;

            internal short DataIndexMax;
        }

        internal const int FILE_FLAG_OVERLAPPED = 1073741824;

        internal const short FILE_SHARE_READ = 1;

        internal const short FILE_SHARE_WRITE = 2;

        internal const uint GENERIC_READ = 2147483648u;

        internal const uint GENERIC_WRITE = 1073741824u;

        internal const int ACCESS_NONE = 0;

        internal const int INVALID_HANDLE_VALUE = -1;

        internal const short OPEN_EXISTING = 3;

        internal const int WAIT_TIMEOUT = 258;

        internal const uint WAIT_OBJECT_0 = 0u;

        internal const uint WAIT_FAILED = uint.MaxValue;

        internal const int WAIT_INFINITE = 65535;

        internal const int DBT_DEVICEARRIVAL = 32768;

        internal const int DBT_DEVICEREMOVECOMPLETE = 32772;

        internal const int DBT_DEVTYP_DEVICEINTERFACE = 5;

        internal const int DBT_DEVTYP_HANDLE = 6;

        internal const int DEVICE_NOTIFY_ALL_INTERFACE_CLASSES = 4;

        internal const int DEVICE_NOTIFY_SERVICE_HANDLE = 1;

        internal const int DEVICE_NOTIFY_WINDOW_HANDLE = 0;

        internal const int WM_DEVICECHANGE = 537;

        internal const short DIGCF_PRESENT = 2;

        internal const short DIGCF_DEVICEINTERFACE = 16;

        internal const int DIGCF_ALLCLASSES = 4;

        internal const int MAX_DEV_LEN = 1000;

        internal const int SPDRP_ADDRESS = 28;

        internal const int SPDRP_BUSNUMBER = 21;

        internal const int SPDRP_BUSTYPEGUID = 19;

        internal const int SPDRP_CAPABILITIES = 15;

        internal const int SPDRP_CHARACTERISTICS = 27;

        internal const int SPDRP_CLASS = 7;

        internal const int SPDRP_CLASSGUID = 8;

        internal const int SPDRP_COMPATIBLEIDS = 2;

        internal const int SPDRP_CONFIGFLAGS = 10;

        internal const int SPDRP_DEVICE_POWER_DATA = 30;

        internal const int SPDRP_DEVICEDESC = 0;

        internal const int SPDRP_DEVTYPE = 25;

        internal const int SPDRP_DRIVER = 9;

        internal const int SPDRP_ENUMERATOR_NAME = 22;

        internal const int SPDRP_EXCLUSIVE = 26;

        internal const int SPDRP_FRIENDLYNAME = 12;

        internal const int SPDRP_HARDWAREID = 1;

        internal const int SPDRP_LEGACYBUSTYPE = 20;

        internal const int SPDRP_LOCATION_INFORMATION = 13;

        internal const int SPDRP_LOWERFILTERS = 18;

        internal const int SPDRP_MFG = 11;

        internal const int SPDRP_PHYSICAL_DEVICE_OBJECT_NAME = 14;

        internal const int SPDRP_REMOVAL_POLICY = 31;

        internal const int SPDRP_REMOVAL_POLICY_HW_DEFAULT = 32;

        internal const int SPDRP_REMOVAL_POLICY_OVERRIDE = 33;

        internal const int SPDRP_SECURITY = 23;

        internal const int SPDRP_SECURITY_SDS = 24;

        internal const int SPDRP_SERVICE = 4;

        internal const int SPDRP_UI_NUMBER = 16;

        internal const int SPDRP_UI_NUMBER_DESC_FORMAT = 29;

        internal const int SPDRP_UPPERFILTERS = 17;

        internal static DEVPROPKEY DEVPKEY_Device_BusReportedDeviceDesc = new DEVPROPKEY
        {
            fmtid = new Guid(1410045054u, 35648, 17852, 168, 162, 106, 11, 137, 76, 189, 162),
            pid = 4
        };

        internal const short HIDP_INPUT = 0;

        internal const short HIDP_OUTPUT = 1;

        internal const short HIDP_FEATURE = 2;

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true, SetLastError = true)]
        internal static extern bool CancelIo(IntPtr hFile);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true, SetLastError = true)]
        internal static extern bool CancelIoEx(IntPtr hFile, IntPtr lpOverlapped);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true, SetLastError = true)]
        internal static extern bool CloseHandle(IntPtr hObject);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = true, SetLastError = true)]
        internal static extern bool CancelSynchronousIo(IntPtr hObject);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        internal static extern IntPtr CreateEvent(ref SECURITY_ATTRIBUTES securityAttributes, int bManualReset, int bInitialState, string lpName);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        internal static extern IntPtr CreateFile(string lpFileName, uint dwDesiredAccess, int dwShareMode, ref SECURITY_ATTRIBUTES lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile);

        [DllImport("kernel32.dll", SetLastError = true)]
        internal static extern bool ReadFile(IntPtr hFile, [Out] byte[] lpBuffer, uint nNumberOfBytesToRead, out uint lpNumberOfBytesRead, [In] ref NativeOverlapped lpOverlapped);

        [DllImport("kernel32.dll")]
        internal static extern uint WaitForSingleObject(IntPtr hHandle, int dwMilliseconds);

        [DllImport("kernel32.dll")]
        internal static extern bool WriteFile(IntPtr hFile, byte[] lpBuffer, uint nNumberOfBytesToWrite, out uint lpNumberOfBytesWritten, [In] ref NativeOverlapped lpOverlapped);

        [DllImport("setupapi.dll")]
        public static extern bool SetupDiGetDeviceRegistryProperty(IntPtr deviceInfoSet, ref SP_DEVINFO_DATA deviceInfoData, int propertyVal, ref int propertyRegDataType, byte[] propertyBuffer, int propertyBufferSize, ref int requiredSize);

        [DllImport("setupapi.dll", EntryPoint = "SetupDiGetDevicePropertyW", SetLastError = true)]
        public static extern bool SetupDiGetDeviceProperty(IntPtr deviceInfo, ref SP_DEVINFO_DATA deviceInfoData, ref DEVPROPKEY propkey, ref ulong propertyDataType, byte[] propertyBuffer, int propertyBufferSize, ref int requiredSize, uint flags);

        [DllImport("setupapi.dll")]
        internal static extern bool SetupDiEnumDeviceInfo(IntPtr deviceInfoSet, int memberIndex, ref SP_DEVINFO_DATA deviceInfoData);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        internal static extern IntPtr RegisterDeviceNotification(IntPtr hRecipient, IntPtr notificationFilter, int flags);

        [DllImport("setupapi.dll")]
        internal static extern int SetupDiCreateDeviceInfoList(ref Guid classGuid, int hwndParent);

        [DllImport("setupapi.dll")]
        internal static extern int SetupDiDestroyDeviceInfoList(IntPtr deviceInfoSet);

        [DllImport("setupapi.dll")]
        internal static extern bool SetupDiEnumDeviceInterfaces(IntPtr deviceInfoSet, ref SP_DEVINFO_DATA deviceInfoData, ref Guid interfaceClassGuid, int memberIndex, ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData);

        [DllImport("setupapi.dll", CharSet = CharSet.Auto)]
        internal static extern IntPtr SetupDiGetClassDevs(ref Guid classGuid, string enumerator, int hwndParent, int flags);

        [DllImport("setupapi.dll", CharSet = CharSet.Auto, EntryPoint = "SetupDiGetDeviceInterfaceDetail")]
        internal static extern bool SetupDiGetDeviceInterfaceDetailBuffer(IntPtr deviceInfoSet, ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData, IntPtr deviceInterfaceDetailData, int deviceInterfaceDetailDataSize, ref int requiredSize, IntPtr deviceInfoData);

        [DllImport("setupapi.dll", CharSet = CharSet.Auto)]
        internal static extern bool SetupDiGetDeviceInterfaceDetail(IntPtr deviceInfoSet, ref SP_DEVICE_INTERFACE_DATA deviceInterfaceData, ref SP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailData, int deviceInterfaceDetailDataSize, ref int requiredSize, IntPtr deviceInfoData);

        [DllImport("user32.dll")]
        internal static extern bool UnregisterDeviceNotification(IntPtr handle);

        [DllImport("hid.dll")]
        internal static extern bool HidD_FlushQueue(IntPtr hidDeviceObject);

        [DllImport("hid.dll")]
        internal static extern bool HidD_GetAttributes(IntPtr hidDeviceObject, ref HIDD_ATTRIBUTES attributes);

        [DllImport("hid.dll")]
        internal static extern bool HidD_GetFeature(IntPtr hidDeviceObject, byte[] lpReportBuffer, int reportBufferLength);

        [DllImport("hid.dll")]
        internal static extern bool HidD_GetInputReport(IntPtr hidDeviceObject, ref byte lpReportBuffer, int reportBufferLength);

        [DllImport("hid.dll")]
        internal static extern void HidD_GetHidGuid(ref Guid hidGuid);

        [DllImport("hid.dll")]
        internal static extern bool HidD_GetNumInputBuffers(IntPtr hidDeviceObject, ref int numberBuffers);

        [DllImport("hid.dll")]
        internal static extern bool HidD_GetPreparsedData(IntPtr hidDeviceObject, ref IntPtr preparsedData);

        [DllImport("hid.dll")]
        internal static extern bool HidD_FreePreparsedData(IntPtr preparsedData);

        [DllImport("hid.dll")]
        internal static extern bool HidD_SetFeature(IntPtr hidDeviceObject, byte[] lpReportBuffer, int reportBufferLength);

        [DllImport("hid.dll")]
        internal static extern bool HidD_SetNumInputBuffers(IntPtr hidDeviceObject, int numberBuffers);

        [DllImport("hid.dll")]
        internal static extern bool HidD_SetOutputReport(IntPtr hidDeviceObject, byte[] lpReportBuffer, int reportBufferLength);

        [DllImport("hid.dll")]
        internal static extern int HidP_GetCaps(IntPtr preparsedData, ref HIDP_CAPS capabilities);

        [DllImport("hid.dll")]
        internal static extern int HidP_GetValueCaps(short reportType, ref byte valueCaps, ref short valueCapsLength, IntPtr preparsedData);

        [DllImport("hid.dll", CharSet = CharSet.Unicode)]
        internal static extern bool HidD_GetProductString(IntPtr hidDeviceObject, ref byte lpReportBuffer, int ReportBufferLength);

        [DllImport("hid.dll", CharSet = CharSet.Unicode)]
        internal static extern bool HidD_GetManufacturerString(IntPtr hidDeviceObject, ref byte lpReportBuffer, int ReportBufferLength);

        [DllImport("hid.dll", CharSet = CharSet.Unicode)]
        internal static extern bool HidD_GetSerialNumberString(IntPtr hidDeviceObject, ref byte lpReportBuffer, int reportBufferLength);
    }
}