#include "GUIFunction.h"


// win32 api IFileOpenDialog


// TO DO: rewrite this function to bool and get file path through public value
bool  GUIFunction::openFileFolderDialog()
{
	//initialize COM lib
    
	HRESULT hResult = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
    
    if (SUCCEEDED(hResult))
    {
        IFileOpenDialog* pFileOpen = nullptr;

        hResult = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_ALL, IID_IFileOpenDialog, reinterpret_cast<void**>(&pFileOpen));

        DWORD fileFormatFlag;
        hResult = pFileOpen->GetOptions(&fileFormatFlag);
        hResult = pFileOpen->SetOptions(fileFormatFlag | FOS_FORCEFILESYSTEM);

        COMDLG_FILTERSPEC fileType[] =
        {
            {L"gltf model files",L"*.gltf*"},
            {L"gltf model files",L"*.GLTF*"},

        };
        hResult = pFileOpen->SetFileTypes(ARRAYSIZE(fileType), fileType);
        hResult = pFileOpen->SetFileTypeIndex(0);
        if (SUCCEEDED(hResult))
        {
            // Show the Open dialog box.
            hResult = pFileOpen->Show(NULL);

            // Get the file name from the dialog box.
            if (SUCCEEDED(hResult))
            {
                IShellItem* pItem;
                hResult = pFileOpen->GetResult(&pItem);
                if (SUCCEEDED(hResult))
                {
                    PWSTR pszFilePath;
                    hResult = pItem->GetDisplayName(SIGDN_FILESYSPATH, &pszFilePath);
                    filePath = pszFilePath;
                    // Display the file name to the user.
                    if (SUCCEEDED(hResult))
                    {
                        MessageBoxW(NULL, pszFilePath, L"File Path", MB_OK);
                        CoTaskMemFree(pszFilePath);
                        
                    }
                    pItem->Release();
                }
                return true;
            }
            pFileOpen->Release();
            return false;
        }
        
        CoUninitialize();
        return false;
    }
    return false;
    
};