// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef DEVICE_VR_OPENXR_OPENXR_SCENE_UNDERSTANDING_MANAGER_H_
#define DEVICE_VR_OPENXR_OPENXR_SCENE_UNDERSTANDING_MANAGER_H_

#include "device/vr/openxr/openxr_anchor_manager.h"
#include "device/vr/openxr/openxr_extension_handler_factory.h"
#include "device/vr/openxr/openxr_hit_test_manager.h"
#include "device/vr/openxr/openxr_plane_manager.h"
#include "device/vr/public/mojom/vr_service.mojom.h"
#include "third_party/openxr/src/include/openxr/openxr.h"

namespace device {

// This is used in metrics, so don't reorder or reuse.
// When adding values here be sure to add a corresponding entry to the enum in
// tools/metrics/histograms/metadata/xr/enums.xml as well.
// LINT.IfChange(OpenXrSceneUnderstandingManagerType)
enum class OpenXrSceneUnderstandingManagerType {
  kNone = 0,
  kMsft = 1,
  kAndroid = 2,
  kSpatialEntities = 3,
  kMaxValue = kSpatialEntities
};
// LINT.ThenChange(//tools/metrics/histograms/metadata/xr/enums.xml:OpenXrSceneUnderstandingManagerType)

// The OpenXRSceneUnderstandingManager is responsible for managing various
// delegates that need to interact with each other. These delegates sometimes
// rely on separate extensions that are nevertheless part of a complete "system"
// where the entire system of extensions can talk to each other, but not really
// to other types of extensions. The goal of this class then is to help ensure
// that any delegates that are part of such systems are created together, and to
// help with dependency injection and lifecycle management of these delegates.
class OpenXRSceneUnderstandingManager {
 public:
  OpenXRSceneUnderstandingManager();
  virtual ~OpenXRSceneUnderstandingManager();

  // Called by the OpenXrApiWrapper when an event comes through that recommends
  // the scene understanding manager run it's "discovery" code. Note that at
  // present, this is really only meaningful for the spatial entities framework.
  virtual void OnDiscoveryRecommended(
      const XrEventDataSpatialDiscoveryRecommendedEXT* event_data);

  virtual OpenXrSceneUnderstandingManagerType GetType() const = 0;
  virtual OpenXrPlaneManager* GetPlaneManager() = 0;
  virtual OpenXrAnchorManager* GetAnchorManager() = 0;
  virtual OpenXrHitTestManager* GetHitTestManager() = 0;
};

}  // namespace device
#endif  // DEVICE_VR_OPENXR_OPENXR_SCENE_UNDERSTANDING_MANAGER_H_