#include "framework.h"
#include "WinnerX.h"
#include <windows.h>
#include <iostream>

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_CLIPBOARDUPDATE:
    {
        std::wcout << std::endl << L"WM_CLIPBOARDUPDATE" << std::endl;

        if (!IsClipboardFormatAvailable(CF_TEXT))
        {
            break;
        }

        Sleep(1); // necessary for OpenClipboard
        if (!OpenClipboard(hWnd))
        {
            std::wcout << L"Error: " << GetLastError() << std::endl;
            break;
        }

        auto clipboardObject = GetClipboardData(CF_TEXT);
        if (clipboardObject == nullptr)
        {
            std::wcout << L"Error: " << GetLastError() << std::endl;
            break;
        }

        auto copyiedText = (char*)GlobalLock(clipboardObject);
        if (copyiedText != nullptr)
        {
            std::wcout << L"Copyied: " << copyiedText << std::endl;
            GlobalUnlock(copyiedText);
        }
        CloseClipboard();
    }
    break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

#define MAX_LOADSTRING 100
WCHAR szTitle[MAX_LOADSTRING];
WCHAR szWindowClass[MAX_LOADSTRING];

int main()
{
    auto appModule = GetModuleHandle(nullptr);
    LoadStringW(appModule, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(appModule, IDC_WINNERX, szWindowClass, MAX_LOADSTRING);

    auto wcex = WNDCLASSEXW{};
    wcex.cbSize = sizeof(WNDCLASSEX);
    wcex.lpfnWndProc = WndProc;
    wcex.hInstance = appModule;
    wcex.lpszClassName = szWindowClass;

    if (!RegisterClassExW(&wcex))
    {
        std::wcout << L"Error: " << GetLastError() << std::endl;
        return false;
    }
    auto hWnd = CreateWindowEx(0, szWindowClass, szTitle, 0, 0, 0, 0, 0, HWND_MESSAGE, nullptr, nullptr, nullptr);
    if (!hWnd)
    {
        std::wcout << L"Error: " << GetLastError() << std::endl;
        return false;
    }

    if (!AddClipboardFormatListener(hWnd))
    {
        std::wcout << L"Error: " << GetLastError() << std::endl;
        return false;
    }

    auto msg = MSG();
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    RemoveClipboardFormatListener(hWnd);

    return (int)msg.wParam;
}