/*
 * All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
 * its licensors.
 *
 * For complete copyright and license terms please see the LICENSE at the root of this
 * distribution (the "License"). All use of this software is governed by the License,
 * or, if provided, by the license below or the license accompanying this file. Do not
 * remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 */

#pragma once

#include <AzCore/Component/Component.h>
#include <AzCore/Component/TickBus.h>
#include <AzFramework/Physics/SystemBus.h>
#include <AzFramework/Physics/World.h>
#include <AzFramework/Physics/WorldEventhandler.h>
#include <AzToolsFramework/Entity/EditorEntityContextBus.h>
#include <IEditor.h>

namespace PhysX
{
    ///
    /// System component for PhysX editor
    ///
    class EditorSystemComponent
        : public AZ::Component
        , public AZ::TickBus::Handler
        , public Physics::EditorWorldBus::Handler
        , private Physics::WorldEventHandler
        , private CrySystemEventBus::Handler
        , private AzToolsFramework::EditorEvents::Bus::Handler
        , private IEditorNotifyListener
        , private AzToolsFramework::EditorEntityContextNotificationBus::Handler
    {
    public:
        AZ_COMPONENT(EditorSystemComponent, "{560F08DC-94F5-4D29-9AD4-CDFB3B57C654}");
        static void Reflect(AZ::ReflectContext* context);

        EditorSystemComponent() = default;

        // Physics::EditorWorldBus
        AZStd::shared_ptr<Physics::World> GetEditorWorld() override;
        void MarkEditorWorldDirty() override;

    private:

        void OnTriggerEnter(const Physics::TriggerEvent& triggerEvent) override;
        void OnTriggerExit(const Physics::TriggerEvent& triggerEvent) override;
        void OnCollisionBegin(const Physics::CollisionEvent& collisionEvent) override;
        void OnCollisionPersist(const Physics::CollisionEvent& collisionEvent) override;
        void OnCollisionEnd(const Physics::CollisionEvent& collisionEvent) override;

        static void GetProvidedServices(AZ::ComponentDescriptor::DependencyArrayType& provided)
        {
            provided.push_back(AZ_CRC("PhysXEditorService", 0x0a61cda5));
        }

        static void GetRequiredServices(AZ::ComponentDescriptor::DependencyArrayType& required)
        {
            required.push_back(AZ_CRC("PhysXService", 0x75beae2d));
        }

        // TickBus::Handler
        void OnTick(float deltaTime, AZ::ScriptTimePoint time) override;

        // AZ::Component
        void Activate() override;
        void Deactivate() override;

        // IEditorNotifyListener interface implementation
        void OnEditorNotifyEvent(EEditorNotifyEvent event) override;

        // CrySystemEvents
        void OnCrySystemShutdown(ISystem&) override;

        // AzToolsFramework::EditorEvents
        void NotifyRegisterViews() override;

        // AzToolsFramework::EditorEntityContextNotificationBus
        void OnStartPlayInEditorBegin() override;
        void OnStopPlayInEditor() override;

        /// Register for Cry Editor events.
        void RegisterForEditorEvents();

        /// Unregister for Cry Editor events.
        void UnregisterForEditorEvents();

        void UpdateDefaultMaterialLibrary();
        AZ::Data::AssetId GenerateSurfaceTypesLibrary();

        AZStd::shared_ptr<Physics::World> m_editorWorld;
        bool m_editorWorldDirty = false; ///< When true, it's time to update the editor world.
        static const float s_minEditorWorldUpdateInterval; ///< The minimal interval between editor World updates.
        static const float s_fixedDeltaTime; ///< The fixed delta time used to update the editor world.
        float m_intervalCountdown = s_minEditorWorldUpdateInterval;
        bool m_onlyTickOnDirty = false;
    };
}