int TTChatHookAddress = 0;
int TTChatHookJMPAddress = 0;
int TTPrologueFuncCallAddress = 0;

bool ReadMemory(int Address, void* Buffer, int Size)
{
        bool ret = 1;
        DWORD OldProtect;
        HANDLE Process = OpenProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION, false, GetCurrentProcessId());
        VirtualProtectEx(Process, (LPVOID)Address, Size, PAGE_EXECUTE_READWRITE, &OldProtect);
        if (!ReadProcessMemory(Process, (LPVOID)Address, Buffer, Size, NULL))
        {
                Console_Output("Reading process memory adress 0x%x failed\n", Address);
                Console_Output("GetLastError() = %d\n", GetLastError());
                ret = 0;
        }
        VirtualProtectEx(Process, (LPVOID)Address, Size, OldProtect, NULL);
        CloseHandle(Process);
        return ret;
}
 
bool WriteMemory(int Address, const void* Buffer, int Size)
{
        bool ret = 1;
        DWORD OldProtect;
        HANDLE Process = OpenProcess(PROCESS_VM_READ | PROCESS_VM_WRITE | PROCESS_VM_OPERATION, false, GetCurrentProcessId());
        VirtualProtectEx(Process, (LPVOID)Address, Size, PAGE_EXECUTE_READWRITE, &OldProtect);
        if (!WriteProcessMemory(Process, (LPVOID)Address, Buffer, Size, NULL))
        {
                Console_Output("Hooking address 0x%x failed\n", Address);
                Console_Output("GetLastError() = %d\n", GetLastError());
                ret = 0;
        }
        VirtualProtectEx(Process, (LPVOID)Address, Size, OldProtect, NULL);
        CloseHandle(Process);
        return ret;
}
 
void Install_Hook(char OpCode, int Addr, int Glue, char *Padding)
{
        int HookAddress = Addr;
        int Offset = Glue - HookAddress - 5;
        WriteMemory(HookAddress, &OpCode, 1);
        WriteMemory(HookAddress+1, &Offset, 4);
};
 
int Calculate_Address_From_Displacement(int JMPStartAddress)
{
        char OpCodes[5];
        int Displacement, Address;
 
        ReadMemory(JMPStartAddress, OpCodes, 5);
        Console_Output("BYTES READ: 0x%x 0x%x 0x%x 0x%x 0x%x \n", OpCodes[0], OpCodes[1], OpCodes[2], OpCodes[3], OpCodes[4]);
 
        memcpy(&Displacement, OpCodes+1, sizeof(char)*4); // OpCodeBuffer+1 or we'll also read the JMP opcode
 
        Address = JMPStartAddress + 5 + Displacement;
        return Address;
}

bool _cdecl Private_Chat_Hook(int PlayerID, int Type, wchar_t *Message, int TargetID)
{
	if (TargetID == -2 || Type != 2) { return true; } // Only trigger on valid private chat

	Console_Output("PlayerID = %d, TargetID = %d, type = %d, Message = %S\n", PlayerID, TargetID, Type, Message);

	return false;
}

void _declspec(naked) PrivateChatHook_Glue()
{
	_asm
	{
		push esi		
		mov eax, esi
		mov esi, ecx // save ecx

		push [ecx+06C0h] // arg 4, TargetID
		push [ecx+06BCh] // arg 3, Message
		push [ecx+06B8h] // arg 2, Type
		push [ecx+06B4h] // arg 1, PlayerID
		call Private_Chat_Hook
		add esp, 16;

		mov ecx, esi // restore ecx
		
		test al, al
		jz Block_Private_Chat
		
		call TTPrologueFuncCallAddress
		jmp TTChatHookJMPAddress

Block_Private_Chat:
		pop esi
		retn
	}
}

// install function, OnLoadGlobalINISettings is a good place to install, the plugin constructor doesn't work
void TriggerbotAntiCheat::OnLoadGlobalINISettings(INIClass *SSGMIni)
{
	TTChatHookAddress = Calculate_Address_From_Displacement(0x004B5C10); // Hook from  cCsTextObj::Act(void)
	TTChatHookJMPAddress = TTChatHookAddress+8;
	TTPrologueFuncCallAddress = Calculate_Address_From_Displacement(TTChatHookAddress + 3);

	Install_Hook('\xE9', TTChatHookAddress, (int)&PrivateChatHook_Glue, "");
}