#include "lts_licence.h"
#include <QDomDocument>
#include <NGLLogger/NGLLoggerBootstrap.h>
#include <QObject>

namespace LtsLicence
{
static bool extractLicence(const QDomElement &licenceElement, QVector<Licence> &licenceVec);
static NGL::INGLLogger &getLogger()
{
  return NGL::NGLLoggerBootstrap::getNGLRootLogger().getNGLLogger("LtsLicence");
}

QVector<Licence> readLicences(const QByteArray &unencryptedXmlData)
{
  QVector<Licence> licenceVec;

  QDomDocument xmlDoc;
  QString errorMsg;
  int errorLine = 0;
  int errorColumn = 0;

  if (!xmlDoc.setContent(unencryptedXmlData, &errorMsg, &errorLine, &errorColumn))
  {
    ERROR_LOG(getLogger()) << "Error reading xml data, " << "error in line " << errorLine
                           << ", column " << errorColumn
                           << ", message: " << errorMsg;
    return licenceVec;
  }

  INFO_LOG(getLogger()) << "Try to extract licences";

  QDomElement licenceElement = xmlDoc.documentElement().firstChildElement(QLatin1String("licence"));

  while (!licenceElement.isNull())
  {
    if (!extractLicence(licenceElement, licenceVec))
    {
      licenceVec.clear();
      return licenceVec;
    }

    licenceElement = licenceElement.nextSiblingElement(QLatin1String("licence"));
  }
  return licenceVec;
} 


QByteArray writeUnencryptedLicences(const QVector<Licence> &licences)
{
  QDomDocument xmlDoc;

  QDomProcessingInstruction instr = xmlDoc.createProcessingInstruction(QLatin1String("xml"),
                                                                       QLatin1String("version='1.0' encoding='UTF-8' standalone='yes'"));
  xmlDoc.appendChild(instr);

  QDomElement root = xmlDoc.createElement(QLatin1String("licences"));
  xmlDoc.appendChild(root);

  for (int i = 0; i < licences.size(); ++i)
  {
    QDomElement lic = xmlDoc.createElement(QLatin1String("licence"));
    root.appendChild(lic);

    
    QDomElement element = xmlDoc.createElement(QLatin1String("name"));
    QDomText text = xmlDoc.createTextNode(licences[i].name);
    element.appendChild(text);
    lic.appendChild(element);

    
    element = xmlDoc.createElement(QLatin1String("ignoreMaxCount"));
    text = xmlDoc.createTextNode(QString::number(licences[i].ignoreMaxCount));
    element.appendChild(text);
    lic.appendChild(element);

    
    element = xmlDoc.createElement(QLatin1String("ignoreExpiration"));
    text = xmlDoc.createTextNode(QString::number(licences[i].ignoreExpiration));
    element.appendChild(text);
    lic.appendChild(element);

    
    element = xmlDoc.createElement(QLatin1String("maxCount"));
    text = xmlDoc.createTextNode(QString::number(licences[i].maxCount));
    element.appendChild(text);
    lic.appendChild(element);

    
    const QLatin1String format("dd.MM.yyyy hh:mm:ss");
    const QString qs = licences[i].expiration.toString(format);

    
    element = xmlDoc.createElement(QLatin1String("expiration"));
    text = xmlDoc.createTextNode(qs);
    element.appendChild(text);
    lic.appendChild(element);
  }
  INFO_LOG(getLogger()) << "Generated XML Data...\n" << xmlDoc.toByteArray();
  return xmlDoc.toByteArray();
} 


bool extractLicence(const QDomElement &licenceElement, QVector<Licence> &licenceVec)
{
  Licence licence;

  
  QDomElement tag = licenceElement.firstChildElement(QLatin1String("name"));
  licence.name = tag.text();

  
  tag = licenceElement.firstChildElement(QLatin1String("ignoreMaxCount"));
  licence.ignoreMaxCount = tag.text().toInt();

  
  tag = licenceElement.firstChildElement(QLatin1String("ignoreExpiration"));
  licence.ignoreExpiration = tag.text().toInt();

  
  tag = licenceElement.firstChildElement(QLatin1String("maxCount"));
  licence.maxCount = tag.text().toInt();

  
  tag = licenceElement.firstChildElement(QLatin1String("expiration"));

  const QString  qs(tag.text());

  
  const QLatin1String format("dd.MM.yyyy hh:mm:ss");
  const QDateTime qdt = QDateTime::fromString(qs, format);

  if (!qdt.isValid())
  {
    ERROR_LOG(getLogger()) << "Invalid expiration format! " << qs
                           << " used format: " << format
                           ;
    return false;
  }

  licence.expiration = qdt;
  INFO_LOG(getLogger()) << "Read licence for:'" << licence.name << "'"
                        << " IgnoreMaxCount: " << licence.ignoreMaxCount
                        << " IgnoreExpiration: " << licence.ignoreExpiration
                        << " MaxCount: " << licence.maxCount
                        << " Expiration: " << licence.expiration.date().toString()
                        << " " << licence.expiration.time().toString()
                        << " RefCount: " << licence.licenceRefCount
                        ;

  licenceVec.append(licence);
  return true;
} 



QString Licence::toString() const
{
  return QObject::tr("Name: %1, Count: %2, ExpireDate: %3, Expires: %4, UseMaxCount: %5")
         .arg(name)
         .arg(maxCount)
         .arg(expiration.toString())
         .arg(ignoreExpiration)
         .arg(ignoreMaxCount);
}



}