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#include "qwinrtservices.h"
#include "qwinrtfileengine.h"
#include <QtCore/QUrl>
#include <QtCore/QDir>
#include <QtCore/QCoreApplication>
#include <QtCore/qfunctions_winrt.h>

#include <wrl.h>
#include <windows.foundation.h>
#include <windows.storage.h>
#include <windows.system.h>
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::Storage;
using namespace ABI::Windows::System;

QT_BEGIN_NAMESPACE

class QWinRTServicesPrivate
{
public:
    ComPtr<IUriRuntimeClassFactory> uriFactory;
    ComPtr<IStorageFileStatics> fileFactory;
    ComPtr<ILauncherStatics> launcher;
};

QWinRTServices::QWinRTServices()
    : d_ptr(new QWinRTServicesPrivate)
{
    Q_D(QWinRTServices);

    HRESULT hr;
    hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Foundation_Uri).Get(),
                                IID_PPV_ARGS(&d->uriFactory));
    Q_ASSERT_X(SUCCEEDED(hr), Q_FUNC_INFO, qPrintable(qt_error_string(hr)));

    hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Storage_StorageFile).Get(),
                                IID_PPV_ARGS(&d->fileFactory));
    Q_ASSERT_X(SUCCEEDED(hr), Q_FUNC_INFO, qPrintable(qt_error_string(hr)));

    hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_System_Launcher).Get(),
                                IID_PPV_ARGS(&d->launcher));
    Q_ASSERT_X(SUCCEEDED(hr), Q_FUNC_INFO, qPrintable(qt_error_string(hr)));
}

QWinRTServices::~QWinRTServices()
{
}

bool QWinRTServices::openUrl(const QUrl &url)
{
    Q_D(QWinRTServices);

    ComPtr<IUriRuntimeClass> uri;
    QString urlString = url.toString();
    HStringReference uriString(reinterpret_cast<LPCWSTR>(urlString.utf16()), urlString.length());
    HRESULT hr = d->uriFactory->CreateUri(uriString.Get(), &uri);
    RETURN_FALSE_IF_FAILED("Failed to create URI from QUrl.");

    ComPtr<IAsyncOperation<bool>> op;
    hr = d->launcher->LaunchUriAsync(uri.Get(), &op);
    RETURN_FALSE_IF_FAILED("Failed to start URI launch.");

    boolean result;
    hr = QWinRTFunctions::await(op, &result);
    RETURN_FALSE_IF_FAILED("Failed to launch URI.");

    return result;
}

bool QWinRTServices::openDocument(const QUrl &url)
{
    Q_D(QWinRTServices);

    HRESULT hr;
    ComPtr<IStorageFile> file;
    ComPtr<IStorageItem> item = QWinRTFileEngineHandler::registeredFile(url.toLocalFile());
    if (item) {
        hr = item.As(&file);
        if (FAILED(hr))
            qErrnoWarning(hr, "Failed to cast picked item to a file");
    }
    if (!file) {
        const QString pathString = QDir::toNativeSeparators(url.toLocalFile());
        HStringReference path(reinterpret_cast<LPCWSTR>(pathString.utf16()), pathString.length());
        ComPtr<IAsyncOperation<StorageFile *>> op;
        hr = d->fileFactory->GetFileFromPathAsync(path.Get(), &op);
        RETURN_FALSE_IF_FAILED("Failed to initialize file URI.");

        hr = QWinRTFunctions::await(op, file.GetAddressOf());
        RETURN_FALSE_IF_FAILED("Failed to get file URI.");
    }

    boolean result;
    {
        ComPtr<IAsyncOperation<bool>> op;
        hr = d->launcher->LaunchFileAsync(file.Get(), &op);
        RETURN_FALSE_IF_FAILED("Failed to start file launch.");

        hr = QWinRTFunctions::await(op, &result);
        RETURN_FALSE_IF_FAILED("Failed to launch file.");
    }

    return result;
}

QT_END_NAMESPACE