/*
* 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 <LmbrCentral/Dependency/DependencyMonitor.h>
#include <GradientSignal/GradientSampler.h>
#include <AzCore/Component/Component.h>
#include <GradientSignal/Ebuses/GradientRequestBus.h>
#include <GradientSignal/Ebuses/SurfaceMaskGradientRequestBus.h>
#include <SurfaceData/SurfaceDataTypes.h>
#include <SurfaceData/SurfaceDataSystemRequestBus.h>

namespace LmbrCentral
{
    template<typename, typename>
    class EditorWrappedComponentBase;
}

namespace GradientSignal
{
    class SurfaceMaskGradientConfig
        : public AZ::ComponentConfig
    {
    public:
        AZ_CLASS_ALLOCATOR(SurfaceMaskGradientConfig, AZ::SystemAllocator, 0);
        AZ_RTTI(SurfaceMaskGradientConfig, "{E59D0A4C-BA3D-4288-B409-A00B7D5566AA}", AZ::ComponentConfig);
        static void Reflect(AZ::ReflectContext* context);
        SurfaceData::SurfaceTagVector m_surfaceTagList;

        size_t GetNumTags() const;
        AZ::Crc32 GetTag(int tagIndex) const;
        void RemoveTag(int tagIndex);
        void AddTag(AZStd::string tag);
    };

    static const AZ::Uuid SurfaceMaskGradientComponentTypeId = "{4661F063-7126-4BE1-886F-5A6FFC6DAC71}";

    /**
    * calculates a gradient value based on percent contribution from surface tags
    */      
    class SurfaceMaskGradientComponent
        : public AZ::Component
        , private GradientRequestBus::Handler
        , private SurfaceMaskGradientRequestBus::Handler
    {
    public:
        template<typename, typename> friend class LmbrCentral::EditorWrappedComponentBase;
        AZ_COMPONENT(SurfaceMaskGradientComponent, SurfaceMaskGradientComponentTypeId);
        static void GetProvidedServices(AZ::ComponentDescriptor::DependencyArrayType& services);
        static void GetIncompatibleServices(AZ::ComponentDescriptor::DependencyArrayType& services);
        static void Reflect(AZ::ReflectContext* context);

        SurfaceMaskGradientComponent(const SurfaceMaskGradientConfig& configuration);
        SurfaceMaskGradientComponent() = default;
        ~SurfaceMaskGradientComponent() = default;

        //////////////////////////////////////////////////////////////////////////
        // AZ::Component interface implementation
        void Activate() override;
        void Deactivate() override;
        bool ReadInConfig(const AZ::ComponentConfig* baseConfig) override;
        bool WriteOutConfig(AZ::ComponentConfig* outBaseConfig) const override;

        //////////////////////////////////////////////////////////////////////////
        // GradientRequestBus
        float GetValue(const GradientSampleParams& sampleParams) const override;

    protected:
        //////////////////////////////////////////////////////////////////////////
        // SurfaceTagGradientRequests
        size_t GetNumTags() const override;
        AZ::Crc32 GetTag(int tagIndex) const override;
        void RemoveTag(int tagIndex) override;
        void AddTag(AZStd::string tag) override;

    private:
        SurfaceMaskGradientConfig m_configuration;
        LmbrCentral::DependencyMonitor m_dependencyMonitor;
    };
}