// ctkDICOMWidgets includes
#include "ctkDICOMQueryWidget.h"
#include "ui_ctkDICOMQueryWidget.h"

// STD includes
#include <iostream>

// Qt includes
#include <QTimer>

//logger
#include <ctkLogger.h>
static ctkLogger logger("org.commontk.DICOM.Widgets.ctkDICOMQueryWidget");


//----------------------------------------------------------------------------
class ctkDICOMQueryWidgetPrivate: public Ui_ctkDICOMQueryWidget
{
public:
  ctkDICOMQueryWidgetPrivate();
  ~ctkDICOMQueryWidgetPrivate();

  QTimer* SearchTimer;
  int SearchIdleTime;
};

//----------------------------------------------------------------------------
// ctkDICOMQueryWidgetPrivate methods

//----------------------------------------------------------------------------
ctkDICOMQueryWidgetPrivate::ctkDICOMQueryWidgetPrivate(){
  // set default of search idle time to 500 ms
  this->SearchIdleTime = 500;

  // Initialize search timer
  this->SearchTimer = new QTimer();
  this->SearchTimer->setSingleShot(true);
}

//----------------------------------------------------------------------------
ctkDICOMQueryWidgetPrivate::~ctkDICOMQueryWidgetPrivate(){
  this->SearchTimer->deleteLater();
}

//----------------------------------------------------------------------------
// ctkDICOMQueryWidget methods

//----------------------------------------------------------------------------
ctkDICOMQueryWidget::ctkDICOMQueryWidget(QWidget* _parent):Superclass(_parent), 
  d_ptr(new ctkDICOMQueryWidgetPrivate)
{
  Q_D(ctkDICOMQueryWidget);
  
  d->setupUi(this);

  connect(d->NameSearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  connect(d->StudySearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  connect(d->SeriesSearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  connect(d->IdSearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  connect(d->DateRangeWidget, SIGNAL(endDateTimeChanged(QDateTime)), this, SLOT(startTimer()));
  connect(d->DateRangeWidget, SIGNAL(startDateTimeChanged(QDateTime)), this, SLOT(startTimer()));
  connect(d->ModalityWidget, SIGNAL(selectedModalitiesChanged(QStringList)), this, SLOT(startTimer()));

  connect(d->SearchTimer, SIGNAL(timeout()), this, SIGNAL(parameterChanged()));
}

//----------------------------------------------------------------------------
ctkDICOMQueryWidget::~ctkDICOMQueryWidget()
{
  Q_D(ctkDICOMQueryWidget);

  disconnect(d->NameSearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  disconnect(d->StudySearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  disconnect(d->SeriesSearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  disconnect(d->IdSearch, SIGNAL(textChanged(QString)), this, SLOT(startTimer()));
  disconnect(d->DateRangeWidget, SIGNAL(endDateTimeChanged(QDateTime)), this, SLOT(startTimer()));
  disconnect(d->DateRangeWidget, SIGNAL(startDateTimeChanged(QDateTime)), this, SLOT(startTimer()));
  disconnect(d->ModalityWidget, SIGNAL(selectedModalitiesChanged(QStringList)), this, SLOT(startTimer()));

  disconnect(d->SearchTimer, SIGNAL(timeout()), this, SIGNAL(parameterChanged()));
}


//----------------------------------------------------------------------------
QMap<QString,QVariant> ctkDICOMQueryWidget::parameters()
{
  Q_D(ctkDICOMQueryWidget);

  QMap<QString,QVariant> parameters;

  parameters["Name"] = d->NameSearch->text();
  parameters["Study"] = d->StudySearch->text();
  parameters["Series"] = d->SeriesSearch->text();
  parameters["ID"] = d->IdSearch->text();

  if ( !d->ModalityWidget->areAllModalitiesSelected() )
  { // some PACS (conquest) don't seem to accept list of modalities,
    // so don't include the list at all when all modalities are desired
    // TODO: think about how to fix this for conquest at the query level
    parameters["Modalities"] = d->ModalityWidget->selectedModalities();
  }

  if ( !d->DateRangeWidget->isAnyDate() )
  {
    QDate startDate = d->DateRangeWidget->startDateTime().date();
    QDate endDate = d->DateRangeWidget->endDateTime().date();
    parameters["StartDate"] = startDate.toString("yyyyMMdd");
    parameters["EndDate"] = endDate.toString("yyyyMMdd");
  }

  return parameters;
}

//----------------------------------------------------------------------------
void ctkDICOMQueryWidget::startTimer(){
  Q_D(ctkDICOMQueryWidget);

  d->SearchTimer->stop();
  d->SearchTimer->start(d->SearchIdleTime);
}