#pragma once

#include "Scene/EditorSceneBackend.h"
#include "Scene/SceneToolState.h"
#include "Scene/SceneViewportCameraController.h"
#include "Scene/SceneViewportRenderRequest.h"

#include <cstdint>

namespace XCEngine::UI::Editor::App {

class EditorSceneRuntime;

class SceneViewportSession {
public:
    SceneViewportSession();

    void Reset();

    EditorSceneCameraSnapshot BuildCameraSnapshot() const;
    SceneViewportRenderRequest BuildRenderRequest(
        const EditorSceneRuntime& sceneRuntime) const;

    void ApplyCameraInput(const SceneViewportCameraInputState& input);
    bool FocusSelection(const EditorSceneRuntime& sceneRuntime);

    SceneToolMode GetToolMode() const;
    SceneToolSpaceMode GetToolSpaceMode() const;
    SceneToolPivotMode GetToolPivotMode() const;

    void SetToolMode(SceneToolMode mode);
    void SetToolSpaceMode(SceneToolSpaceMode mode);
    void SetToolPivotMode(SceneToolPivotMode mode);

private:
    void IncrementCameraRevision();
    std::uint64_t BuildRequestRevision(std::uint64_t sceneContentRevision) const;

    SceneViewportCameraController m_cameraController = {};
    SceneToolMode m_toolMode = SceneToolMode::Translate;
    SceneToolSpaceMode m_toolSpaceMode = SceneToolSpaceMode::World;
    SceneToolPivotMode m_toolPivotMode = SceneToolPivotMode::Pivot;
    std::uint64_t m_cameraRevision = 0u;
};

} // namespace XCEngine::UI::Editor::App