#include "piccodeitem.h"
#include "ItemCommon.h"
#include <QDebug>

PicCodeItem::PicCodeItem(QGraphicsItem *parent, QGraphicsScene *scene, const SourceType type)
    :PicTextItem(parent, scene, type),
    m_currCounterValues({0, 0})
{
    setFlag(QGraphicsItem::ItemIsMovable);
    setFlag(QGraphicsItem::ItemIsSelectable);
    setFlag(QGraphicsItem::ItemIsFocusable);
    setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
    
    connect(&m_dateVarTimer, &QTimer::timeout, this, [this](){
        updateVariants();
    });

    // m_dateVarTimer.start(50);
}

PicCodeItem::~PicCodeItem()
{
    m_dateVarTimer.stop();
}

QVariant PicCodeItem::source()
{
    return m_currCodeTxt;
}

void PicCodeItem::setSource(QVariant var)
{
    applyModify();
}

void PicCodeItem::setBarcodeViewModel(const BarcodeViewModel &vm)
{
    m_vm = vm;
    m_currCodeTxt = "";
    setTextItemModel(m_vm.generalSettingsVM);
    updateVariants();
    qInfo() << "Barcode model: \r\n" << qPrintable(BarcodeViewModel::toString(vm));
}

BarcodeViewModel PicCodeItem::barcodeViewModel()
{
    m_vm.generalSettingsVM = textItemModel();
    return m_vm;
}

bool PicCodeItem::updateVariants(const QVector<int> counters)
{
    if (counters.size() < 2) {
        qWarning() << "PicCodeItem::updateVariants: counters size insufficient:" << counters.size() << ", expected >= 2";
        return false;
    }
    m_currCounterValues = counters;
    return updateVariants();
}

QImage PicCodeItem::itemImage()
{
    return m_codeImage;
}

void PicCodeItem::setCustomAttrs(const QXmlStreamAttributes &attrs)
{
    auto vm = BarcodeViewModel::loadFromXml(attrs);
    setBarcodeViewModel(vm);
}

void PicCodeItem::saveCustomAttrs(QXmlStreamAttributes &attrs)
{
    BarcodeViewModel::saveToXml(m_vm, attrs);
}

bool PicCodeItem::updateVariants()
{
    if (m_currCounterValues.size() < 2) {
        qWarning() << "PicCodeItem::updateVariants: m_currCounterValues size < 2, cannot generate barcode text";
        return false;
    }

    auto txt = ItemUtils::generateTxtFromBarcodeViewModel(m_vm, {m_currCounterValues[0], m_currCounterValues[1]}, QDateTime::currentDateTime());
    if(txt != m_currCodeTxt || m_currCodeTxt.isEmpty()) {
        m_currCodeTxt = txt;
        m_codeImage = ItemUtils::generateBarcodeImage(txt, m_vm.type, m_vm.format);
        applyModify();
        return true;
    }

    return false;
}