#include <windows.h>
#include "open_dialog.h"

char *do_open_rom_dialog(void)
{
    OPENFILENAMEW dialog;
    wchar_t filename[MAX_PATH] = {0};
    
    memset(&dialog, 0, sizeof(dialog));
    dialog.lStructSize = sizeof(dialog);
    dialog.lpstrFile = filename;
    dialog.nMaxFile = sizeof(filename);
    dialog.lpstrFilter = L"Game Boy ROMs\0*.gb;*.gbc;*.sgb\0All files\0*.*\0\0";
    dialog.nFilterIndex = 1;
    dialog.lpstrFileTitle = NULL;
    dialog.nMaxFileTitle = 0;
    dialog.lpstrInitialDir = NULL;
    dialog.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
    
    if (GetOpenFileNameW(&dialog) == TRUE)
    {
        char *ret = malloc(MAX_PATH * 4);
        WideCharToMultiByte(CP_UTF8, 0, filename, sizeof(filename), ret, MAX_PATH * 4, NULL, NULL);
        return ret;
    }
    
    return NULL;
}