using System;
using System.Runtime.InteropServices;
using Prospect.Launcher.Invoke.Structs;

namespace Prospect.Launcher.Invoke;

internal static class Kernel32
{
    [DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Auto)]
    public static extern bool CreateProcess(string lpApplicationName,
        string lpCommandLine, IntPtr lpProcessAttributes,
        IntPtr lpThreadAttributes,
        bool bInheritHandles, ProcessCreationFlags dwCreationFlags,
        IntPtr lpEnvironment, string lpCurrentDirectory,
        ref StartupInfo lpStartupInfo,
        out ProcessInformation lpProcessInformation);

    public static bool CreateProcess(
        string lpApplicationName,
        string lpCommandLine,
        ProcessCreationFlags dwCreationFlags,
        ref StartupInfo lpStartupInfo,
        out ProcessInformation lpProcessInformation) => CreateProcess(lpApplicationName, lpCommandLine, IntPtr.Zero,
        IntPtr.Zero, false, dwCreationFlags, IntPtr.Zero, null, ref lpStartupInfo, out lpProcessInformation);
        
    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern unsafe bool WriteProcessMemory(
        IntPtr hProcess,
        IntPtr lpBaseAddress,
        byte* lpBuffer,
        Int32 nSize,
        out IntPtr lpNumberOfBytesWritten
    );
        
    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    public static extern IntPtr GetModuleHandle(string lpModuleName);
        
    [DllImport("kernel32.dll")]
    public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

    [DllImport("kernel32", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
    public static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
        
    [DllImport("kernel32.dll", SetLastError = true, ExactSpelling = true)]
    public static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);
        
    [DllImport("kernel32.dll")]
    public static extern IntPtr CreateRemoteThread(IntPtr hProcess, IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);
        
    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern uint ResumeThread(IntPtr hThread);
}