/****************************************************************************
 Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.
 
 http://www.cocos.com
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do so,
 subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
****************************************************************************/
#include "3d/models/BakedSkinningModel.h"
#include "3d/assets/Mesh.h"
//#include "3d/skeletal-animation/DataPoolManager.h"
#include "core/Root.h"
#include "scene/Model.h"
#include "scene/SubModel.h"

namespace {
const cc::gfx::SamplerInfo JOINT_TEXTURE_SAMPLER_INFO{
    cc::gfx::Filter::POINT,
    cc::gfx::Filter::POINT,
    cc::gfx::Filter::NONE,
    cc::gfx::Address::CLAMP,
    cc::gfx::Address::CLAMP,
    cc::gfx::Address::CLAMP,
};

ccstd::vector<cc::scene::IMacroPatch> myPatches{
    {"CC_USE_SKINNING", true},
    {"CC_USE_BAKED_ANIMATION", true}};

const ccstd::string INST_JOINT_ANIM_INFO = "a_jointAnimInfo";
} // namespace
namespace cc {

BakedSkinningModel::BakedSkinningModel()
//, _dataPoolManager(Root::getInstance()->getDataPoolManager())
{
    _type = Model::Type::BAKED_SKINNING;
    _jointMedium.jointTextureInfo.reset(4);
    // JSB uses _dataPoolManager in JS and the data is synchronized by syncDataForJS & syncAnimInfoForJS
    //    _jointMedium.animInfo = _dataPoolManager->jointAnimationInfo->getData();
}

void BakedSkinningModel::destroy() {
    // CC_SAFE_DELETE(uploadedAnim);
    _jointMedium.boundsInfo.clear();

    if (_jointMedium.buffer != nullptr) {
        CC_SAFE_DESTROY_NULL(_jointMedium.buffer);
    }
    if (_jointMedium.texture.has_value()) {
        CC_SAFE_DELETE(_jointMedium.texture.value());
    }
    applyJointTexture(ccstd::nullopt);
    Super::destroy();
}

void BakedSkinningModel::bindSkeleton(Skeleton *skeleton, Node *skinningRoot, Mesh *mesh) {
    _skeleton = skeleton;
    _mesh = mesh;
    if (skeleton == nullptr || skinningRoot == nullptr || mesh == nullptr) return;
    setTransform(skinningRoot);

    // JSB uses _dataPoolManager in JS and the data is synchronized by syncDataForJS & syncAnimInfoForJS
    //    _jointMedium.animInfo = _dataPoolManager->jointAnimationInfo->getData(skinningRoot->getUuid());

    if (_jointMedium.buffer == nullptr) {
        _jointMedium.buffer = _device->createBuffer({
            gfx::BufferUsageBit::UNIFORM | gfx::BufferUsageBit::TRANSFER_DST,
            gfx::MemoryUsageBit::DEVICE,
            pipeline::UBOSkinning::size,
            pipeline::UBOSkinning::size,
        });
    }
}

void BakedSkinningModel::updateTransform(uint32_t stamp) {
    Super::updateTransform(stamp);
    if (!_isUploadedAnim) {
        return;
    }
    IAnimInfo &animInfo = _jointMedium.animInfo;
    geometry::AABB *skelBound = nullptr;
    const float *curFrame = animInfo.curFrame;
    //    float curFrame = info.data[0];
    auto index = static_cast<index_t>(std::roundf(*curFrame));
    if (!_jointMedium.boundsInfo.empty() && index < _jointMedium.boundsInfo.size()) {
        skelBound = &_jointMedium.boundsInfo[index].value();
    }

    if (_worldBounds && skelBound != nullptr) {
        Node *node = getTransform();
        skelBound->transform(node->getWorldMatrix(), _worldBounds);
        _worldBoundsDirty = true;
    }
}

void BakedSkinningModel::updateUBOs(uint32_t stamp) {
    Super::updateUBOs(stamp);

    IAnimInfo &info = _jointMedium.animInfo;
    const int idx = _instAnimInfoIdx;
    const float *curFrame = info.curFrame;
    bool hasNonInstancingPass = false;
    for (const auto &subModel : _subModels) {
        if (idx >= 0) {
            auto &views = subModel->getInstancedAttributeBlock().views[idx];
            setTypedArrayValue(views, 0, *curFrame);
        } else {
            hasNonInstancingPass = true;
        }
    }

    const uint32_t frameDataBytes = info.frameDataBytes;
    if (hasNonInstancingPass && *info.dirtyForJSB != 0) {
        info.buffer->update(curFrame, frameDataBytes);
        *info.dirtyForJSB = 0;
    }
}

void BakedSkinningModel::applyJointTexture(const ccstd::optional<IJointTextureHandle *> &texture) {
    auto oldTex = _jointMedium.texture;
    if (oldTex.has_value() && texture.has_value() && (&oldTex.value() != &texture.value())) {
        //        _dataPoolManager->jointTexturePool->releaseHandle(oldTex.value());
    }
    _jointMedium.texture = texture;
    if (!texture.has_value()) {
        return;
    }
    auto *textureHandle = texture.value();
    auto *buffer = _jointMedium.buffer.get();
    auto &jointTextureInfo = _jointMedium.jointTextureInfo;
    jointTextureInfo[0] = static_cast<float>(textureHandle->handle.texture->getWidth());
    jointTextureInfo[1] = static_cast<float>(_skeleton->getJoints().size());
    jointTextureInfo[2] = static_cast<float>(textureHandle->pixelOffset) + 0.1F; // guard against floor() underflow
    jointTextureInfo[3] = 1 / jointTextureInfo[0];
    updateInstancedJointTextureInfo();
    if (buffer != nullptr) {
        buffer->update(&jointTextureInfo[0], jointTextureInfo.byteLength());
    }
    auto *tex = textureHandle->handle.texture;

    for (const auto &subModel : _subModels) {
        auto *descriptorSet = subModel->getDescriptorSet();
        descriptorSet->bindTexture(pipeline::JOINTTEXTURE::BINDING, tex);
    }
}

ccstd::vector<scene::IMacroPatch> BakedSkinningModel::getMacroPatches(index_t subModelIndex) {
    auto patches = Super::getMacroPatches(subModelIndex);
    patches.reserve(patches.size() + myPatches.size());
    patches.insert(std::end(patches), std::begin(myPatches), std::end(myPatches));
    return patches;
}

void BakedSkinningModel::updateLocalDescriptors(index_t subModelIndex, gfx::DescriptorSet *descriptorSet) {
    Super::updateLocalDescriptors(subModelIndex, descriptorSet);
    gfx::Buffer *buffer = _jointMedium.buffer;
    auto &texture = _jointMedium.texture;
    const IAnimInfo &animInfo = _jointMedium.animInfo;
    descriptorSet->bindBuffer(pipeline::UBOSkinningTexture::BINDING, buffer);
    descriptorSet->bindBuffer(pipeline::UBOSkinningAnimation::BINDING, animInfo.buffer);
    if (texture.has_value()) {
        auto *sampler = _device->getSampler(JOINT_TEXTURE_SAMPLER_INFO);
        descriptorSet->bindTexture(pipeline::JOINTTEXTURE::BINDING, texture.value()->handle.texture);
        descriptorSet->bindSampler(pipeline::JOINTTEXTURE::BINDING, sampler);
    }
}

void BakedSkinningModel::updateInstancedAttributes(const ccstd::vector<gfx::Attribute> &attributes, scene::SubModel *subModel) {
    Super::updateInstancedAttributes(attributes, subModel);
    _instAnimInfoIdx = subModel->getInstancedAttributeIndex(INST_JOINT_ANIM_INFO);
    updateInstancedJointTextureInfo();
}

void BakedSkinningModel::updateInstancedJointTextureInfo() {
    const auto &jointTextureInfo = _jointMedium.jointTextureInfo;
    const IAnimInfo &animInfo = _jointMedium.animInfo;
    const index_t idx = _instAnimInfoIdx;
    for (const auto &subModel : _subModels) {
        auto &views = subModel->getInstancedAttributeBlock().views;
        if (idx >= 0 && !views.empty()) {
            auto &view = views[idx];
            setTypedArrayValue(view, 0, *animInfo.curFrame); //NOTE: curFrame is only used in JSB.
            setTypedArrayValue(view, 1, jointTextureInfo[1]);
            setTypedArrayValue(view, 2, jointTextureInfo[2]);
        }
    }
}

void BakedSkinningModel::syncAnimInfoForJS(gfx::Buffer *buffer, const Float32Array &data, Uint8Array &dirty) {
    _jointMedium.animInfo.buffer = buffer;
    _jointMedium.animInfo.curFrame = &data[0];
    _jointMedium.animInfo.frameDataBytes = data.byteLength();
    _jointMedium.animInfo.dirtyForJSB = &dirty[0];
}

void BakedSkinningModel::syncDataForJS(const ccstd::vector<ccstd::optional<geometry::AABB>> &boundsInfo,
                                       const ccstd::optional<geometry::AABB> &modelBound,
                                       float jointTextureInfo0,
                                       float jointTextureInfo1,
                                       float jointTextureInfo2,
                                       float jointTextureInfo3,
                                       gfx::Texture *tex,
                                       const Float32Array &animInfoData) {
    _jointMedium.boundsInfo = boundsInfo;

    if (modelBound.has_value()) {
        const geometry::AABB &modelBounldValue = modelBound.value();
        _modelBounds->set(modelBounldValue.center, modelBounldValue.halfExtents);
    } else {
        _modelBounds = nullptr;
    }

    _jointMedium.jointTextureInfo[0] = jointTextureInfo0;
    _jointMedium.jointTextureInfo[1] = jointTextureInfo1;
    _jointMedium.jointTextureInfo[2] = jointTextureInfo2;
    _jointMedium.jointTextureInfo[3] = jointTextureInfo3;

    _jointMedium.animInfo.curFrame = &animInfoData[0];
    _jointMedium.animInfo.frameDataBytes = animInfoData.byteLength();

    if (_jointMedium.texture.has_value()) {
        delete _jointMedium.texture.value();
        _jointMedium.texture = ccstd::nullopt;
    }
    IJointTextureHandle *textureInfo = IJointTextureHandle::createJoinTextureHandle();
    textureInfo->handle.texture = tex;
    _jointMedium.texture = textureInfo;

    updateInstancedJointTextureInfo();

    auto *buffer = _jointMedium.buffer.get();
    if (buffer != nullptr) {
        buffer->update(&_jointMedium.jointTextureInfo[0], _jointMedium.jointTextureInfo.byteLength());
    }

    for (const auto &subModel : _subModels) {
        auto *descriptorSet = subModel->getDescriptorSet();
        descriptorSet->bindTexture(pipeline::JOINTTEXTURE::BINDING, tex);
    }
}

} // namespace cc