using System.Runtime.InteropServices;

namespace LightlessSync.Utils
{
    internal static class PtrGuardMemory
    {
        [StructLayout(LayoutKind.Sequential)]
        internal struct MEMORY_BASIC_INFORMATION
        {
            public nint BaseAddress;
            public nint AllocationBase;
            public uint AllocationProtect;
            public nuint RegionSize;
            public uint State;
            public uint Protect;
            public uint Type;
        }

        [DllImport("kernel32.dll", SetLastError = true)]
        internal static extern nuint VirtualQuery(
            nint lpAddress,
            out MEMORY_BASIC_INFORMATION lpBuffer,
            nuint dwLength);

        [DllImport("kernel32.dll", SetLastError = true)]
        internal static extern bool ReadProcessMemory(
            nint hProcess,
            nint lpBaseAddress,
            out nint lpBuffer,
            nuint nSize,
            out nuint lpNumberOfBytesRead);

        [DllImport("kernel32.dll")]
        internal static extern nint GetCurrentProcess();

        [DllImport("kernel32.dll")]
        internal static extern void GetSystemInfo(out SYSTEM_INFO lpSystemInfo);

        [StructLayout(LayoutKind.Sequential)]
        internal struct SYSTEM_INFO
        {
            public ushort wProcessorArchitecture;
            public ushort wReserved;
            public uint dwPageSize;
            public nint lpMinimumApplicationAddress;
            public nint lpMaximumApplicationAddress;
            public nint dwActiveProcessorMask;
            public uint dwNumberOfProcessors;
            public uint dwProcessorType;
            public uint dwAllocationGranularity;
            public ushort wProcessorLevel;
            public ushort wProcessorRevision;
        }
    }
}