/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */

#pragma once

#include "OpenGLES.h"
#include "Common/DeviceResources.h"
#include "ImmersiveMain.h"

namespace winrt::ServoApp {
// IFrameworkView class. Connects the app with the Windows shell and handles
// application lifecycle events.
class ImmersiveView sealed
    : public winrt::implements<
          ImmersiveView,
          winrt::Windows::ApplicationModel::Core::IFrameworkView> {
public:
  // IFrameworkView methods.
  void
  Initialize(winrt::Windows::ApplicationModel::Core::CoreApplicationView const
                 &applicationView);
  void SetWindow(winrt::Windows::UI::Core::CoreWindow const &window);
  void Load(winrt::hstring const &entryPoint);
  void Run();
  void Uninitialize();

protected:
  // Application lifecycle event handlers.
  void OnLaunched(winrt::Windows::ApplicationModel::Activation::
                      LaunchActivatedEventArgs const &args);
  void OnViewActivated(
      winrt::Windows::ApplicationModel::Core::CoreApplicationView const &sender,
      winrt::Windows::ApplicationModel::Activation::IActivatedEventArgs const
          &args);
  void OnSuspending(
      winrt::Windows::Foundation::IInspectable const &sender,
      winrt::Windows::ApplicationModel::SuspendingEventArgs const &args);
  void OnResuming(winrt::Windows::Foundation::IInspectable const &sender,
                  winrt::Windows::Foundation::IInspectable const &args);

  // Window event handlers.
  void OnVisibilityChanged(
      winrt::Windows::UI::Core::CoreWindow const &sender,
      winrt::Windows::UI::Core::VisibilityChangedEventArgs const &args);
  void
  OnWindowClosed(winrt::Windows::UI::Core::CoreWindow const &sender,
                 winrt::Windows::UI::Core::CoreWindowEventArgs const &args);

  // CoreWindow input event handlers.
  void OnKeyPressed(winrt::Windows::UI::Core::CoreWindow const &sender,
                    winrt::Windows::UI::Core::KeyEventArgs const &args);
  void OnPointerPressed(winrt::Windows::UI::Core::CoreWindow const &sender,
                        winrt::Windows::UI::Core::PointerEventArgs const &args);

private:
  std::unique_ptr<Immersive::ImmersiveMain> m_main = nullptr;

  std::shared_ptr<DX::DeviceResources> m_deviceResources = nullptr;
  bool m_windowClosed = false;
  bool m_windowVisible = true;

  // Event registration tokens.
  winrt::event_token m_suspendingEventToken;
  winrt::event_token m_resumingEventToken;
  winrt::event_token m_keyDownEventToken;
  winrt::event_token m_pointerPressedEventToken;
  winrt::event_token m_windowClosedEventToken;
  winrt::event_token m_visibilityChangedEventToken;

  // The holographic space the app will use for rendering.
  winrt::Windows::Graphics::Holographic::HolographicSpace m_holographicSpace =
      nullptr;

  // FIXME: initialization is done twice: here and in BrowserPage. Share it.
  // OpenGLES mOpenGLES;
  EGLSurface mRenderSurface{EGL_NO_SURFACE};
};

class ImmersiveViewSource sealed
    : public winrt::implements<
          ImmersiveViewSource,
          winrt::Windows::ApplicationModel::Core::IFrameworkViewSource> {
public:
  // IFrameworkViewSource method.
  winrt::Windows::ApplicationModel::Core::IFrameworkView CreateView();

private:
  ImmersiveView holographicView;
};
} // namespace winrt::ServoApp