//
//  RUTextureAttachmentLoader.cpp
//  red_utils
//
//  Created by RedInfinity on 2024/1/16.
//

#include "RUTextureAttachmentLoader.hpp"
///第三方库
#include "cocos2d.h"
#include "editor-support/spine/AttachmentVertices.h"

NS_RU_BEGIN
static void deleteAttachmentVertices(void* vertices) {
    delete static_cast<spine::AttachmentVertices*>(vertices);
}

static unsigned short quadTriangles[6] = {0, 1, 2, 2, 3, 0};

TextureAttachmentLoader* TextureAttachmentLoader::_instance = nullptr;

TextureAttachmentLoader* TextureAttachmentLoader::getInstance() {
    if (_instance == nullptr) {
        _instance = new TextureAttachmentLoader();
    }
    return _instance;
}

void TextureAttachmentLoader::destoryInstance() {
    if (_instance) {
        delete _instance;
        _instance = nullptr;
    }
}

void TextureAttachmentLoader::rebindAttachmentTexture(spine::Attachment* attachment, const spine::String& imageName) {
    if (attachment->getRTTI().isExactly(spine::RegionAttachment::rtti)) {
        _rebindRegionAttachmentTexture(static_cast<spine::RegionAttachment*>(attachment), imageName);
    } else if (attachment->getRTTI().isExactly(spine::MeshAttachment::rtti)) {
        _rebindMeshAttachmentTexture(static_cast<spine::MeshAttachment*>(attachment), imageName);
    }
}

spine::RegionAttachment* TextureAttachmentLoader::newRegionAttachment(spine::Skin& skin, const spine::String& name, const spine::String& path) {
    spine::RegionAttachment* ret = nullptr;
    cocos2d::TextureCache* tc = cocos2d::Director::getInstance()->getTextureCache();
    cocos2d::Texture2D* t2d = tc->addImage(path.buffer());
    if (t2d) {
        ret = new spine::RegionAttachment(name);
        ret->setRendererObject(t2d);
        ret->setUVs(0, 0, 1, 1, false);
        ret->setRegionOffsetX(0.0f);
        ret->setRegionOffsetY(0.0f);
        const cocos2d::Size& t2dSize = t2d->getContentSizeInPixels();
        ret->setRegionWidth(t2dSize.width);
        ret->setRegionHeight(t2dSize.width);
        ret->setRegionOriginalWidth(t2dSize.width);
        ret->setRegionOriginalHeight(t2dSize.width);
    }
    return ret;
}

spine::MeshAttachment* TextureAttachmentLoader::newMeshAttachment(spine::Skin& skin, const spine::String& name, const spine::String& path) {
    spine::MeshAttachment* ret = nullptr;
    cocos2d::TextureCache* tc = cocos2d::Director::getInstance()->getTextureCache();
    cocos2d::Texture2D* t2d = tc->addImage(path.buffer());
    if (t2d) {
        ret = new spine::MeshAttachment(name);
        ret->setRendererObject(t2d);
        ret->setRegionU(0.0f);
        ret->setRegionV(0.0f);
        ret->setRegionU2(1.0f);
        ret->setRegionV2(1.0f);
        ret->setRegionRotate(false);
        ret->setRegionDegrees(0);
        ret->setRegionOffsetX(0.0f);
        ret->setRegionOffsetY(0.0f);
        const cocos2d::Size& t2dSize = t2d->getContentSizeInPixels();
        ret->setRegionWidth(t2dSize.width);
        ret->setRegionHeight(t2dSize.width);
        ret->setRegionOriginalWidth(t2dSize.width);
        ret->setRegionOriginalHeight(t2dSize.width);
    }
    return ret;
}

spine::BoundingBoxAttachment* TextureAttachmentLoader::newBoundingBoxAttachment(spine::Skin& skin, const spine::String& name) {
    return new spine::BoundingBoxAttachment(name);
}
 
spine::PathAttachment* TextureAttachmentLoader::newPathAttachment(spine::Skin& skin, const spine::String& name) {
    return new spine::PathAttachment(name);
}

spine::PointAttachment* TextureAttachmentLoader::newPointAttachment(spine::Skin& skin, const spine::String& name) {
    return new spine::PointAttachment(name);
}
 
spine::ClippingAttachment* TextureAttachmentLoader::newClippingAttachment(spine::Skin& skin, const spine::String& name) {
    return new spine::ClippingAttachment(name);
}
 
void TextureAttachmentLoader::configureAttachment(spine::Attachment* attachment) {
    if (attachment->getRTTI().isExactly(spine::RegionAttachment::rtti)) {
        _configureRegionAttachment(static_cast<spine::RegionAttachment*>(attachment));
    } else if (attachment->getRTTI().isExactly(spine::MeshAttachment::rtti)) {
        _configureMeshAttachment(static_cast<spine::MeshAttachment*>(attachment));
    }
}

void TextureAttachmentLoader::_rebindRegionAttachmentTexture(spine::RegionAttachment* attachment, const spine::String& imageName) {
    cocos2d::TextureCache* tc = cocos2d::Director::getInstance()->getTextureCache();
    cocos2d::Texture2D* t2d = tc->addImage(imageName.buffer());
    if (t2d) {
        attachment->setRendererObject(t2d);
        attachment->setUVs(0, 0, 1, 1, false);
        attachment->setRegionOffsetX(0.0f);
        attachment->setRegionOffsetY(0.0f);
        const cocos2d::Size& t2dSize = t2d->getContentSizeInPixels();
        attachment->setRegionWidth(t2dSize.width);
        attachment->setRegionHeight(t2dSize.width);
        attachment->setRegionOriginalWidth(t2dSize.width);
        attachment->setRegionOriginalHeight(t2dSize.width);
        attachment->updateOffset();
        _configureRegionAttachment(attachment);
    }
}

void TextureAttachmentLoader::_rebindMeshAttachmentTexture(spine::MeshAttachment* attachment, const spine::String& imageName) {
    cocos2d::TextureCache* tc = cocos2d::Director::getInstance()->getTextureCache();
    cocos2d::Texture2D* t2d = tc->addImage(imageName.buffer());
    if (t2d) {
        attachment->setRendererObject(t2d);
        attachment->setRegionU(0.0f);
        attachment->setRegionV(0.0f);
        attachment->setRegionU2(1.0f);
        attachment->setRegionV2(1.0f);
        attachment->setRegionRotate(false);
        attachment->setRegionDegrees(0);
        attachment->setRegionOffsetX(0.0f);
        attachment->setRegionOffsetY(0.0f);
        const cocos2d::Size& t2dSize = t2d->getContentSizeInPixels();
        attachment->setRegionWidth(t2dSize.width);
        attachment->setRegionHeight(t2dSize.width);
        attachment->setRegionOriginalWidth(t2dSize.width);
        attachment->setRegionOriginalHeight(t2dSize.width);
        attachment->updateUVs();
        _configureMeshAttachment(attachment);
    }
}

void TextureAttachmentLoader::_configureRegionAttachment(spine::RegionAttachment* attachment) {
    cocos2d::Texture2D* t2d = static_cast<cocos2d::Texture2D*>(attachment->getRendererObject());
    spine::AttachmentVertices* attachmentVertices = new spine::AttachmentVertices(t2d, 4, quadTriangles, 6);
    cocos2d::V3F_C4B_T2F* vertices = attachmentVertices->_triangles->verts;
    for (int i = 0, ii = 0; i < 4; ++i, ii += 2) {
        vertices[i].texCoords.u = attachment->getUVs()[ii];
        vertices[i].texCoords.v = attachment->getUVs()[ii + 1];
    }
    attachment->setRendererObject(attachmentVertices, deleteAttachmentVertices);
}

void TextureAttachmentLoader::_configureMeshAttachment(spine::MeshAttachment* attachment) {
    cocos2d::Texture2D* t2d = static_cast<cocos2d::Texture2D*>(attachment->getRendererObject());
    spine::AttachmentVertices* attachmentVertices = new spine::AttachmentVertices(t2d, attachment->getWorldVerticesLength() >> 1, attachment->getTriangles().buffer(), attachment->getTriangles().size());
    cocos2d::V3F_C4B_T2F* vertices = attachmentVertices->_triangles->verts;
    for (int i = 0, ii = 0, nn = attachment->getWorldVerticesLength(); ii < nn; ++i, ii += 2) {
        vertices[i].texCoords.u = attachment->getUVs()[ii];
        vertices[i].texCoords.v = attachment->getUVs()[ii + 1];
    }
    attachment->setRendererObject(attachmentVertices, deleteAttachmentVertices);
}
NS_RU_END