#include "Logger.h"

eg3d::Logger gLogger;

namespace eg3d {

	const char * Logger::sDEF_LoggerCaption = "Logger";

    bool Logger::sWindowClassInitialized = false;

	Logger::Logger()
	{
	    // új window class létrehozása
        if (!sWindowClassInitialized) {
            WNDCLASSEX wcl;
            wcl.hInstance = gEntryArgs.hThisInstance;
            wcl.lpszClassName = "LoggerWndClass";
            wcl.lpfnWndProc = smLoggerWindowFunc;
            wcl.style = 0;

            wcl.cbSize = sizeof(WNDCLASSEX);
            wcl.hIcon = LoadIcon(nullptr, IDI_APPLICATION);
            wcl.hIconSm = LoadIcon(nullptr, IDI_WINLOGO);
            wcl.hCursor = LoadCursor(nullptr, IDC_ARROW);
            wcl.lpszMenuName = nullptr;

            wcl.cbClsExtra = 0;
            wcl.cbWndExtra = 0;

            wcl.hbrBackground = static_cast<HBRUSH>(GetStockObject(DKGRAY_BRUSH));

            if (!RegisterClassEx(&wcl))
            {
                ERRBOX("Couldn't register window class for eg3d::Window");
            }

            sWindowClassInitialized = true;
        }

        // ablak létrehozása

        mHWND = CreateWindowA("LoggerWndClass",
                      "logger",
                      WS_OVERLAPPEDWINDOW,
                      CW_USEDEFAULT,
                      CW_USEDEFAULT,
                      CW_USEDEFAULT,
                      CW_USEDEFAULT,
                      HWND_DESKTOP,
                      nullptr,
                      gEntryArgs.hThisInstance,
                      nullptr);

		SetWindowLongA(mHWND, GWL_STYLE, GetWindowLongA(mHWND, GWL_STYLE) ^ (WS_THICKFRAME | WS_MAXIMIZEBOX));
		UpdateWindow(mHWND);

		ShowWindow(mHWND, SW_SHOW);
		
		SetWindowTextA(mHWND, sDEF_LoggerCaption);

		// listbox létrehozása
		mhListBox = CreateWindow("LISTBOX", 
			nullptr, 
			WS_CHILD | WS_VISIBLE | WS_VSCROLL | ES_AUTOVSCROLL, 
			0, 0, sDEF_width, sDEF_height, 
			mHWND, 
			nullptr, 
			gEntryArgs.hThisInstance, 
			nullptr);

		// átméretezés
        RECT winRect;
        GetWindowRect(mHWND, &winRect);

        // terület beállítása
        winRect.right = winRect.left + sDEF_width;
        winRect.bottom = winRect.top + sDEF_height;

        // keret hozzáadása
        AdjustWindowRect(&winRect, GetWindowLong(mHWND, GWL_STYLE), false);

        //SetWindowPos(mHWND, HWND_TOP, winRect.left, winRect.top, width, height, 0);
        SetWindowPos(mHWND, HWND_TOP, winRect.top, winRect.left, winRect.right - winRect.left, winRect.bottom - winRect.top, 0);

        UpdateWindow(mHWND);
	}


	Logger::~Logger()
	{
		DestroyWindow(mhListBox);
	}

	void Logger::log(const std::string& text) const
	{
		SendMessageA(mhListBox, LB_ADDSTRING, 0, (LPARAM)text.c_str());
		SendMessageA(mhListBox, WM_VSCROLL, SB_BOTTOM, (LPARAM) nullptr);
	}

    LRESULT Logger::smLoggerWindowFunc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
        switch (message)
        {
//            case WM_DESTROY:
//                PostQuitMessage(0);
//                break;
            default:
                return DefWindowProc(hwnd, message, wParam, lParam);
        }

        return 0;
    }
}