/*
 * Copyright (c) Contributors to the Open 3D Engine Project.
 * For complete copyright and license terms please see the LICENSE at the root of this distribution.
 *
 * SPDX-License-Identifier: Apache-2.0 OR MIT
 *
 */

#include <AzManipulatorTestFramework/ViewportInteraction.h>
#include <AzFramework/Viewport/ViewportScreen.h>
#include <AzFramework/Viewport/CameraState.h>
#include <AzToolsFramework/Manipulators/ManipulatorBus.h>

namespace AzManipulatorTestFramework
{
    // Null debug display for dummy draw calls
    class NullDebugDisplayRequests
        : public AzFramework::DebugDisplayRequests
    {
    public:
        virtual ~NullDebugDisplayRequests() = default;
    };

    ViewportInteraction::ViewportInteraction()
        : m_nullDebugDisplayRequests(AZStd::make_unique<NullDebugDisplayRequests>())
    {
        AzToolsFramework::ViewportInteraction::ViewportInteractionRequestBus::Handler::BusConnect(m_viewportId);
    }

    ViewportInteraction::~ViewportInteraction()
    {
        AzToolsFramework::ViewportInteraction::ViewportInteractionRequestBus::Handler::BusDisconnect();
    }

    AzFramework::CameraState ViewportInteraction::GetCameraState()
    {
        return m_cameraState;
    }

    bool ViewportInteraction::GridSnappingEnabled()
    {
        return m_gridSnapping;
    }

    float ViewportInteraction::GridSize()
    {
        return m_gridSize;
    }

    bool ViewportInteraction::ShowGrid()
    {
        return false;
    }

    bool ViewportInteraction::AngleSnappingEnabled()
    {
        return m_angularSnapping;
    }

    float ViewportInteraction::AngleStep()
    {
        return m_angularStep;
    }

    AzFramework::ScreenPoint ViewportInteraction::ViewportWorldToScreen(const AZ::Vector3& worldPosition)
    {
        return AzFramework::WorldToScreen(worldPosition, m_cameraState);
    }

    void ViewportInteraction::SetCameraState(const AzFramework::CameraState& cameraState)
    {
        m_cameraState = cameraState;
    }

    AzFramework::DebugDisplayRequests& ViewportInteraction::GetDebugDisplay()
    {
        return *m_nullDebugDisplayRequests;
    }

    void ViewportInteraction::EnableGridSnaping()
    {
        m_gridSnapping = true;
    }

    void ViewportInteraction::DisableGridSnaping()
    {
        m_gridSnapping = false;
    }

    void ViewportInteraction::EnableAngularSnaping()
    {
        m_angularSnapping = true;
    }

    void ViewportInteraction::DisableAngularSnaping()
    {
        m_angularSnapping = false;
    }

    void ViewportInteraction::SetGridSize(float size)
    {
        m_gridSize = size;
    }

    void ViewportInteraction::SetAngularStep(float step)
    {
        m_angularStep = step;
    }

    int ViewportInteraction::GetViewportId() const
    {
        return m_viewportId;
    }

    AZStd::optional<AZ::Vector3> ViewportInteraction::ViewportScreenToWorld(
        [[maybe_unused]] const AzFramework::ScreenPoint& screenPosition, [[maybe_unused]] float depth)
    {
        return {};
    }

    AZStd::optional<AzToolsFramework::ViewportInteraction::ProjectedViewportRay> ViewportInteraction::ViewportScreenToWorldRay(
        [[maybe_unused]] const AzFramework::ScreenPoint& screenPosition)
    {
        return {};
    }

    float ViewportInteraction::DeviceScalingFactor()
    {
        return 1.0f;
    }
}// namespace AzManipulatorTestFramework