/*
Copyright 2022 - 2022 Stephane Cuillerdier(aka aiekick)

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http:://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissionsand
limitations under the License.
*/

#pragma once

#include <set>
#include <array>
#include <string>
#include <memory>

#include <ctools/cTools.h>
#include <ctools/ConfigAbstract.h>

#include <LumoBackend/Base/BaseRenderer.h>
#include <LumoBackend/Base/QuadShaderPass.h>
#include <Gaia/gaia.h>
#include <Gaia/Resources/Texture2D.h>
#include <Gaia/Core/VulkanCore.h>
#include <Gaia/Core/VulkanDevice.h>

#include <Gaia/Shader/VulkanShader.h>
#include <Gaia/Gui/ImGuiTexture.h>
#include <Gaia/Resources/VulkanRessource.h>
#include <Gaia/Resources/VulkanFrameBuffer.h>

#include <LumoBackend/Interfaces/GuiInterface.h>
#include <LumoBackend/Interfaces/Texture2DInputInterface.h>
#include <LumoBackend/Interfaces/TextureCubeInputInterface.h>
#include <LumoBackend/Interfaces/Texture2DOutputInterface.h>

class Refraction_Quad_Pass : public QuadShaderPass,
                             public Texture2DInputInterface<2>,
                             public TextureCubeInputInterface<1>,
                             public Texture2DOutputInterface {
private:
    VulkanBufferObjectPtr m_UBOFragPtr = nullptr;
    vk::DescriptorBufferInfo m_UBO_Frag_BufferInfos = {VK_NULL_HANDLE, 0, VK_WHOLE_SIZE};
    struct UBOFrag {
        alignas(4) float u_use_normal_map = 0.0f;   // tex2D 0
        alignas(4) float u_use_longlat_map = 0.0f;  // tex2D 1
        alignas(4) float u_use_cubemap_map = 0.0f;  // cubemap 0
        alignas(4) float u_refraction_coef = 0.4f;
    } m_UBOFrag;

public:
    Refraction_Quad_Pass(GaiApi::VulkanCoreWeak vVulkanCore);
    ~Refraction_Quad_Pass() override;

    void ActionBeforeInit() override;
    void WasJustResized() override;

    bool DrawWidgets(const uint32_t& vCurrentFrame, ImGuiContext* vContextPtr = nullptr, void* vUserDatas = nullptr) override;
    bool DrawOverlays(
        const uint32_t& vCurrentFrame, const ImRect& vRect, ImGuiContext* vContextPtr = nullptr, void* vUserDatas = nullptr) override;
    bool DrawDialogsAndPopups(
        const uint32_t& vCurrentFrame, const ImRect& vMaxRect, ImGuiContext* vContextPtr = nullptr, void* vUserDatas = nullptr) override;

    // Interfaces Setters
    void SetTexture(const uint32_t& vBindingPoint, vk::DescriptorImageInfo* vImageInfo, ct::fvec2* vTextureSize = nullptr, void* vUserDatas = nullptr) override;
    void SetTextureCube(const uint32_t& vBindingPoint, vk::DescriptorImageInfo* vImageCubeInfo, ct::fvec2* vTextureSize = nullptr) override;

    // Interfaces Getters
    vk::DescriptorImageInfo* GetDescriptorImageInfo(const uint32_t& vBindingPoint, ct::fvec2* vOutSize = nullptr, void* vUserDatas = nullptr) override;

    std::string getXml(const std::string& vOffset, const std::string& vUserDatas) override;
    bool setFromXml(tinyxml2::XMLElement* vElem, tinyxml2::XMLElement* vParent, const std::string& vUserDatas) override;

protected:
    bool CreateUBO() override;
    void UploadUBO() override;
    void DestroyUBO() override;

    bool UpdateLayoutBindingInRessourceDescriptor() override;
    bool UpdateBufferInfoInRessourceDescriptor() override;

    std::string GetVertexShaderCode(std::string& vOutShaderName) override;
    std::string GetFragmentShaderCode(std::string& vOutShaderName) override;
};