/****************************************************************************
 Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.

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 of this software and associated documentation files (the "Software"), to deal
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 all copies or substantial portions of the Software.

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****************************************************************************/

#include "scene/Ambient.h"
#include "core/Root.h"
#include "renderer/pipeline/PipelineSceneData.h"
#include "renderer/pipeline/RenderPipeline.h"
#include "renderer/pipeline/custom/RenderInterfaceTypes.h"

namespace {
cc::Color col;

// Normalize HDR color
void normalizeHDRColor(cc::Vec4 &color) {
    const float intensity = 1.F / std::max(std::max(std::max(color.x, color.y), color.z), 0.0001F);
    if (intensity < 1.F) {
        color.x *= intensity;
        color.y *= intensity;
        color.z *= intensity;
    }
}

} // namespace
namespace cc {
namespace scene {

void AmbientInfo::setSkyLightingColor(const Color &val) {
    Vec4 v4(static_cast<float>(val.r) / 255.F, static_cast<float>(val.g) / 255.F, static_cast<float>(val.b) / 255.F, static_cast<float>(val.a) / 255.F);
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _skyColorHDR.set(v4);
    } else {
        _skyColorLDR.set(v4);
    }
    if (_resource != nullptr) {
        _resource->setSkyColor(v4);
    }
}

const Color &AmbientInfo::getSkyLightingColor() const {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    Vec4 v4(isHDR ? _skyColorHDR : _skyColorLDR);
    normalizeHDRColor(v4);
    col.set(static_cast<uint8_t>(v4.x * 255.F), static_cast<uint8_t>(v4.y * 255.F), static_cast<uint8_t>(v4.z * 255.F), 255);
    return col;
}

void AmbientInfo::setSkyColor(const Vec4 &val) {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _skyColorHDR.set(val);
    } else {
        _skyColorLDR.set(val);
    }
    if (_resource != nullptr) {
        _resource->setSkyColor(val);
    }
}

void AmbientInfo::setSkyIllum(float val) {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _skyIllumHDR = val;

    } else {
        _skyIllumLDR = val;
    }

    if (_resource != nullptr) {
        _resource->setSkyIllum(val);
    }
}

float AmbientInfo::getSkyIllum() const {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    return isHDR ? _skyIllumHDR : _skyIllumLDR;
}

void AmbientInfo::setGroundLightingColor(const Color &val) {
    const Vec4 v4(static_cast<float>(val.r) / 255.F, static_cast<float>(val.g) / 255.F, static_cast<float>(val.b) / 255.F, static_cast<float>(val.a) / 255.F);
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _groundAlbedoHDR.set(v4);
    } else {
        _groundAlbedoLDR.set(v4);
    }

    if (_resource != nullptr) {
        _resource->setGroundAlbedo(v4);
    }
}

const Color &AmbientInfo::getGroundLightingColor() const {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    Vec4 v4(isHDR ? _groundAlbedoHDR : _groundAlbedoLDR);
    normalizeHDRColor(v4);
    col.set(static_cast<uint8_t>(v4.x * 255.F), static_cast<uint8_t>(v4.y * 255.F), static_cast<uint8_t>(v4.z * 255.F), 255);
    return col;
}

void AmbientInfo::setGroundAlbedo(const Vec4 &val) {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _groundAlbedoHDR.set(val);
    } else {
        _groundAlbedoLDR.set(val);
    }

    if (_resource != nullptr) {
        _resource->setGroundAlbedo(val);
    }
}

void AmbientInfo::activate(Ambient *resource) {
    _resource = resource;
    _resource->initialize(this);
}

//
void Ambient::initialize(AmbientInfo *info) {
    // setSkyColor(info->getSkyColor());
    // setGroundAlbedo(info->getGroundAlbedo());
    // _skyIllum = info->getSkyIllum();

    // Init HDR/LDR from serialized data on load
    _skyColorHDR = info->getSkyColorHDR();
    _groundAlbedoHDR.set(info->getGroundAlbedoHDR());
    _skyIllumHDR = info->getSkyIllumHDR();
    _skyColorLDR = info->getSkyColorLDR();
    _groundAlbedoLDR.set(info->getGroundAlbedoLDR());
    _skyIllumLDR = info->getSkyIllumLDR();
}

Vec4 &Ambient::getSkyColor() {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    return isHDR ? _skyColorHDR : _skyColorLDR;
}

const Vec4 &Ambient::getSkyColor() const {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    return isHDR ? _skyColorHDR : _skyColorLDR;
}

void Ambient::setSkyColor(const Vec4 &color) {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _skyColorHDR.set(color);
    } else {
        _skyColorLDR.set(color);
    }
}

/**
 * @en Sky illuminance
 * @zh 天空亮度
 */
float Ambient::getSkyIllum() const {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    return isHDR ? _skyIllumHDR : _skyIllumLDR;
}
void Ambient::setSkyIllum(float illum) {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _skyIllumHDR = illum;
    } else {
        _skyIllumLDR = illum;
    }
}

/**
 * @en Ground color
 * @zh 地面颜色
 */
const Vec4 &Ambient::getGroundAlbedo() const {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    return isHDR ? _groundAlbedoHDR : _groundAlbedoLDR;
}

void Ambient::setGroundAlbedo(const Vec4 &color) {
    const bool isHDR = Root::getInstance()->getPipeline()->getPipelineSceneData()->isHDR();
    if (isHDR) {
        _groundAlbedoHDR.set(color);
    } else {
        _groundAlbedoLDR.set(color);
    }
}

} // namespace scene
} // namespace cc