#include "plugin.h"
#include "game_sa\RenderWare.h"
#include "game_sa\common.h"
#include "game_sa\CMenuManager.h"
#include "game_sa\CRadar.h"
#include "game_sa\CWorld.h"
#include "game_sa\RenderWare.h"
#include "game_sa\CFont.h"

#include <Psapi.h>

#pragma comment( lib, "psapi.lib" )

#define E_ADDR_GAMEPROCESS	0x53E981

using namespace plugin;

#pragma pack(push, 1)
typedef struct stOpcodeRelCall
{
	BYTE bOpcode;
	DWORD dwRelAddr;
} OpcodeRelCall;
#pragma pack(pop)

class GPS {
private:
	HANDLE hThread = NULL;

public:
	GPS() {
		hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)GPS::init, (LPVOID)this, 0, (LPDWORD)NULL);
	}

	~GPS() {
		// Check if thread still running on process
		if (hThread != NULL)
			TerminateThread(hThread, 0);
	}

	static LPVOID WINAPI init(LPVOID *lpParam) {
		MODULEINFO miSampDll;
		DWORD dwSampDllBaseAddr, dwSampDllEndAddr, dwCallAddr;

		GPS *sender = (GPS *)lpParam;

		stOpcodeRelCall *fnGameProc = (stOpcodeRelCall *)E_ADDR_GAMEPROCESS;

		// Check if E_ADDR_GAMEPROCESS opcode is a relative call (0xE8)
		while (fnGameProc->bOpcode != 0xE8)
			Sleep(100);

		while (true) {
			Sleep(100);

			// Get samp.dll module information to get base address and end address
			if (!GetModuleInformation(GetCurrentProcess(), GetModuleHandle("samp.dll"), &miSampDll, sizeof(MODULEINFO))) {
				continue;
			}

			// Some stupid calculation
			dwSampDllBaseAddr = (DWORD)miSampDll.lpBaseOfDll;
			dwSampDllEndAddr = dwSampDllBaseAddr + miSampDll.SizeOfImage;

			// Calculate destination address by offset and relative call opcode size
			dwCallAddr = fnGameProc->dwRelAddr + E_ADDR_GAMEPROCESS + 5;

			// Check if dwCallAddr is a samp.dll's hook address, 
			// to make sure this plugin hook (Events::gameProcessEvent) not replaced by samp.dll
			if (dwCallAddr >= dwSampDllBaseAddr && dwCallAddr <= dwSampDllEndAddr)
				break;
		}

		// Just wait a few secs for the game loaded fully to avoid any conflicts and crashes
		// I don't know what the elegant way is :)
		while (!FindPlayerPed(0))
			Sleep(5000);

		// Run the plugin
		sender->run();

		// Reset the thread handle
		sender->hThread = NULL;

		return NULL;
	}

	void run() {

	}

} gps;