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

namespace TemuKJD.BLL
{
    public class MemoryReader
    {
        [DllImport("kernel32.dll")]
        public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

        [DllImport("kernel32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] lpBuffer, uint nSize, out uint lpNumberOfBytesRead);

        [DllImport("kernel32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] lpBuffer, uint nSize, out uint lpNumberOfBytesWritten);

        [DllImport("kernel32.dll")]
        public static extern bool CloseHandle(IntPtr hObject);

        // 声明GetLastError函数
        [DllImport("kernel32.dll")]
        private static extern int GetLastError();

        const int PROCESS_WM_READ = 0x0010;
        const int PROCESS_WM_WRITE = 0x0020;
        const int PROCESS_WM_ALL = 0x003F;
        const int PROCESS_ALL_ACCESS = 0x1F0FFF;

        public static void ReadMemory(int nProcess, int nAddress, int nReadSize)
        {
            int processId = nProcess; // 目标进程ID
            //IntPtr hProcess = OpenProcess(PROCESS_WM_READ | PROCESS_WM_WRITE, false, processId);
            IntPtr hProcess = OpenProcess(PROCESS_ALL_ACCESS, false, processId);
            if (hProcess == IntPtr.Zero)
            {
                int errorCode = GetLastError();
                //Console.WriteLine("Process access failed.");
                BaseForms.BaseMsgForm.ShowError("Process access failed.");
                return;
            }

            int endAddress = nAddress + nReadSize;
            while (nAddress < endAddress)
            {
                IntPtr address = new IntPtr(nAddress); // 目标内存地址
                byte[] buffer = new byte[1024]; // 读取数据的缓冲区
                uint bytesRead;
                if (ReadProcessMemory(hProcess, address, buffer, (uint)buffer.Length, out bytesRead))
                {
                    //Console.WriteLine("Read successful.");
                    string s = System.Text.Encoding.Default.GetString(buffer);
                    if (s.Contains("pddidResult"))
                    {

                    }
                }
                else
                {
                    //Console.WriteLine("Read failed.");
                    // 获取最后一个错误代码
                    int errorCode = GetLastError();
                    //Console.WriteLine("Error code: " + errorCode);
                    // 将错误代码转换为异常（可选）
                    Exception ex = Marshal.GetExceptionForHR(errorCode);
                    //BaseForms.BaseMsgForm.ShowError(ex.Message);
                }
                nAddress += 1000;
            }
            //CloseHandle(hProcess);
        }
    }
}