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#include "web_usb_detector_qt.h"

#include "qtwebenginecoreglobal_p.h"

#include "content/public/browser/device_service.h"
#include "device/base/features.h"

WebUsbDetectorQt::WebUsbDetectorQt() = default;

WebUsbDetectorQt::~WebUsbDetectorQt() = default;

void WebUsbDetectorQt::Initialize()
{
#if defined(OS_WIN)
    // The WebUSB device detector is disabled on Windows due to jank and hangs
    // caused by enumerating devices. The new USB backend is designed to resolve
    // these issues so enable it for testing. https://crbug.com/656702
    if (!base::FeatureList::IsEnabled(device::kNewUsbBackend))
        return;
#endif // defined(OS_WIN)

    if (!m_deviceManager) {
        // Receive mojo::Remote<UsbDeviceManager> from DeviceService.
        content::GetDeviceService().BindUsbDeviceManager(
                m_deviceManager.BindNewPipeAndPassReceiver());
    }
    DCHECK(m_deviceManager);
    m_deviceManager.set_disconnect_handler(base::BindOnce(
            &WebUsbDetectorQt::OnDeviceManagerConnectionError, base::Unretained(this)));

    // Listen for added/removed device events.
    DCHECK(!m_clientReceiver.is_bound());
    m_deviceManager->SetClient(m_clientReceiver.BindNewEndpointAndPassRemote());
}

void WebUsbDetectorQt::OnDeviceAdded(device::mojom::UsbDeviceInfoPtr device_info)
{
    Q_UNUSED(device_info);
    QT_NOT_YET_IMPLEMENTED
}

void WebUsbDetectorQt::OnDeviceRemoved(device::mojom::UsbDeviceInfoPtr device_info)
{
    Q_UNUSED(device_info);
    QT_NOT_YET_IMPLEMENTED
}

void WebUsbDetectorQt::OnDeviceManagerConnectionError()
{
    m_deviceManager.reset();
    m_clientReceiver.reset();

    // Try to reconnect the device manager.
    Initialize();
}