//
//  PolyLineEntityItem.cpp
//  libraries/entities/src
//
//  Created by Eric Levin on 6/22/15.
//  Copyright 2015 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

#include "PolyLineEntityItem.h"

#include <QDebug>

#include <ByteCountCoding.h>
#include <Extents.h>

#include "EntitiesLogging.h"
#include "EntityItemProperties.h"
#include "EntityTree.h"
#include "EntityTreeElement.h"
#include "OctreeConstants.h"

const float PolyLineEntityItem::DEFAULT_LINE_WIDTH = 0.1f;
const int PolyLineEntityItem::MAX_POINTS_PER_LINE = 60;

EntityItemPointer PolyLineEntityItem::factory(const EntityItemID& entityID, const EntityItemProperties& properties) {
    std::shared_ptr<PolyLineEntityItem> entity(new PolyLineEntityItem(entityID), [](PolyLineEntityItem* ptr) { ptr->deleteLater(); });
    entity->setProperties(properties);
    return entity;
}


PolyLineEntityItem::PolyLineEntityItem(const EntityItemID& entityItemID) : EntityItem(entityItemID) {
    _type = EntityTypes::PolyLine;
}

EntityItemProperties PolyLineEntityItem::getProperties(const EntityPropertyFlags& desiredProperties, bool allowEmptyDesiredProperties) const {
    EntityItemProperties properties = EntityItem::getProperties(desiredProperties, allowEmptyDesiredProperties); // get the properties from our base class

@PolyLine_ENTITY_COPY_TO@

    return properties;
}

bool PolyLineEntityItem::setSubClassProperties(const EntityItemProperties& properties) {
    bool somethingChanged = false;

@PolyLine_ENTITY_SET_FROM@

    return somethingChanged;
}

EntityPropertyFlags PolyLineEntityItem::getEntityProperties(EncodeBitstreamParams& params) const {
    EntityPropertyFlags requestedProperties = EntityItem::getEntityProperties(params);

@PolyLine_REQUESTED_PROPS@

    return requestedProperties;
}

void PolyLineEntityItem::appendSubclassData(OctreePacketData* packetData, EncodeBitstreamParams& params,
                                            EntityTreeElementExtraEncodeDataPointer entityTreeElementExtraEncodeData,
                                            EntityPropertyFlags& requestedProperties,
                                            EntityPropertyFlags& propertyFlags,
                                            EntityPropertyFlags& propertiesDidntFit,
                                            int& propertyCount,
                                            OctreeElement::AppendState& appendState) const {

    bool successPropertyFits = true;

@PolyLine_ENTITY_APPEND@

}

int PolyLineEntityItem::readEntitySubclassDataFromBuffer(const unsigned char* data, int bytesLeftToRead,
                                                         ReadBitstreamToTreeParams& args,
                                                         EntityPropertyFlags& propertyFlags, bool overwriteLocalData,
                                                         bool& somethingChanged) {
    int bytesRead = 0;
    const unsigned char* dataAt = data;

@PolyLine_ENTITY_READ@

    return bytesRead;
}

void PolyLineEntityItem::debugDump() const {
    qCDebug(entities) << "PolyLineEntityItem id:" << getEntityItemID() << "---------------------------------------------";
    qCDebug(entities) << "    name:" << _name;
    qCDebug(entities) << "    position:" << debugTreeVector(getWorldPosition());
    qCDebug(entities) << "    dimensions:" << debugTreeVector(getScaledDimensions());
    qCDebug(entities) << "    editedAgo:" << debugTime(getLastEdited(), usecTimestampNow());
    qCDebug(entities) << "    pointer:" << this;

@PolyLine_ENTITY_DEBUG@

}

void PolyLineEntityItem::setLinePoints(const QVector<glm::vec3>& points) {
    withWriteLock([&] {
        _linePoints = points;
        _pointsChanged = true;
    });
    computeAndUpdateDimensions();
}

void PolyLineEntityItem::setStrokeWidths(const QVector<float>& strokeWidths) {
    withWriteLock([&] {
        _strokeWidths = strokeWidths;
        _widthsChanged = true;
    });
    computeAndUpdateDimensions();
}

void PolyLineEntityItem::setNormals(const QVector<glm::vec3>& normals) {
    withWriteLock([&] {
        _normals = normals;
        _normalsChanged = true;
    });
}

void PolyLineEntityItem::setStrokeColors(const QVector<glm::vec3>& strokeColors) {
    withWriteLock([&] {
        _strokeColors = strokeColors;
        _colorsChanged = true;
    });
}

void PolyLineEntityItem::computeAndUpdateDimensions() {
    QVector<glm::vec3> points;
    QVector<float> widths;

    withReadLock([&] {
        points = _linePoints;
        widths = _strokeWidths;
    });

    glm::vec3 maxHalfDim(0.5f * ENTITY_ITEM_DEFAULT_WIDTH);
    float maxWidth = 0.0f;
    for (int i = 0; i < points.length(); i++) {
        maxHalfDim = glm::max(maxHalfDim, glm::abs(points[i]));
        maxWidth = glm::max(maxWidth, i < widths.length() ? widths[i] : DEFAULT_LINE_WIDTH);
    }

    setScaledDimensions(2.0f * (maxHalfDim + maxWidth));
}

void PolyLineEntityItem::computeTightLocalBoundingBox(AABox& localBox) const {
    QVector<glm::vec3> points;
    QVector<float> widths;
    withReadLock([&] {
        points = _linePoints;
        widths = _strokeWidths;
    });

    if (points.size() > 0) {
        Extents extents;
        float maxWidth = DEFAULT_LINE_WIDTH;
        for (int i = 0; i < points.length(); i++) {
            extents.addPoint(points[i]);
            if (i < widths.size()) {
                maxWidth = glm::max(maxWidth, widths[i]);
            }
        }
        extents.addPoint(extents.minimum - maxWidth * Vectors::ONE);
        extents.addPoint(extents.maximum + maxWidth * Vectors::ONE);

        localBox.setBox(extents.minimum, extents.maximum - extents.minimum);
    } else {
        localBox.setBox(glm::vec3(-0.5f * DEFAULT_LINE_WIDTH), glm::vec3(DEFAULT_LINE_WIDTH));
    }
}

QVector<glm::vec3> PolyLineEntityItem::getLinePoints() const {
    return resultWithReadLock<QVector<glm::vec3>>([&] {
        return _linePoints;
    });
}

QVector<glm::vec3> PolyLineEntityItem::getNormals() const {
    return resultWithReadLock<QVector<glm::vec3>>([&] {
        return _normals;
    });
}

QVector<glm::vec3> PolyLineEntityItem::getStrokeColors() const {
    return resultWithReadLock<QVector<glm::vec3>>([&] {
        return _strokeColors;
    });
}

QVector<float> PolyLineEntityItem::getStrokeWidths() const {
    return resultWithReadLock<QVector<float>>([&] {
        return _strokeWidths;
    });
}

QString PolyLineEntityItem::getTextures() const {
    return resultWithReadLock<QString>([&] {
        return _textures;
    });
}

void PolyLineEntityItem::setTextures(const QString& textures) {
    withWriteLock([&] {
        if (_textures != textures) {
            _textures = textures;
            _texturesChanged = true;
        }
    });
}

void PolyLineEntityItem::setColor(const glm::u8vec3& value) {
    withWriteLock([&] {
        _color = value;
        _colorsChanged = true;
    });
}

glm::u8vec3 PolyLineEntityItem::getColor() const {
    return resultWithReadLock<glm::u8vec3>([&] {
        return _color;
    });
}