#include "eetv4xml.h"

#include <QXmlStreamWriter>

namespace
{
QString booleanValue(bool value)
{
    return value ? QStringLiteral("true") : QStringLiteral("false");
}
}

QByteArray EetV4Xml::serializeSale(const EetV4SaleRequest &request, QString *error)
{
    QStringList validationErrors;
    if (!request.validate(&validationErrors))
    {
        if (error != nullptr)
        {
            *error = validationErrors.join(QStringLiteral(" "));
        }
        return {};
    }

    QByteArray output;
    QXmlStreamWriter writer(&output);
    writer.setAutoFormatting(false);
    writer.writeStartDocument(QStringLiteral("1.0"));
    writer.writeStartElement(QStringLiteral("Trzba"));
    writer.writeDefaultNamespace(QStringLiteral("http://fs.gov.cz/eet/schema/v4"));

    writer.writeStartElement(QStringLiteral("Hlavicka"));
    writer.writeAttribute(QStringLiteral("uuid_zpravy"), request.messageUuid.toString(QUuid::WithoutBraces));
    writer.writeAttribute(QStringLiteral("dat_odesl"), EetV4SaleRequest::formatDateTime(request.sentAt));
    writer.writeAttribute(QStringLiteral("prvni_zaslani"), booleanValue(request.firstSubmission));
    if (request.verificationMode)
    {
        writer.writeAttribute(QStringLiteral("overeni"), QStringLiteral("true"));
    }
    writer.writeEndElement();

    writer.writeStartElement(QStringLiteral("Data"));
    writer.writeAttribute(QStringLiteral("eic_popl"), request.taxpayerEic);
    if (!request.authorizingTaxpayerEic.isEmpty())
    {
        writer.writeAttribute(QStringLiteral("eic_poverujiciho"), request.authorizingTaxpayerEic);
    }
    if (request.multipleTaxpayerAuthorization)
    {
        writer.writeAttribute(QStringLiteral("povereni_vice_popl"), QStringLiteral("true"));
    }
    writer.writeAttribute(QStringLiteral("id_jednotky"), QString::number(request.unitId));
    writer.writeAttribute(QStringLiteral("id_pokl"), request.cashRegisterId);
    writer.writeAttribute(QStringLiteral("porad_cis"), request.receiptNumber);
    writer.writeAttribute(QStringLiteral("dat_trzby"), EetV4SaleRequest::formatDateTime(request.saleAt));
    writer.writeAttribute(QStringLiteral("celk_trzba"), request.totalSale.toString());
    if (request.hasIntendedSettlement)
    {
        writer.writeAttribute(QStringLiteral("urceno_cerp_zuct"), request.intendedSettlement.toString());
    }
    if (request.hasSettlement)
    {
        writer.writeAttribute(QStringLiteral("cerp_zuct"), request.settlement.toString());
    }
    writer.writeEndElement();

    writer.writeEndElement();
    writer.writeEndDocument();

    if (writer.hasError())
    {
        if (error != nullptr)
        {
            *error = QStringLiteral("Failed to serialize the EET v4 XML document.");
        }
        return {};
    }
    return output;
}