/**
  * @RDE_HEADER@
  * PresentationManangement - Script Overview Dialog Model
  * $Id$
  * $HeadURL$
  * $Author$
  *
  * Created by Mike Wille, SLSE, 2017-03-15
  */

#include "pre_model.h"

#include <ngltools/ngltools_dtg.h>
#include <PresentationManagement/pre_translation.h>

#include <QGuiApplication>
#include <QPalette>

namespace PresentationManagement
{
PresentationManagementDialogModel::PresentationManagementDialogModel(QObject *parent)
  : LtsWidgets::LtsAbstractTableModel<Presentation>({tr("Id"),
                                                     tr("Name"),
                                                     tr("Description"),
                                                     tr("Operator"),
                                                     tr("LastModified"),
                                                     tr("Status")},
                                                     parent)
  , m_logger(getLogger("PresentationManagementDialogModel"))
{
}


PresentationManagementDialogModel::~PresentationManagementDialogModel()
{}


bool PresentationManagementDialogModel::initModel(const std::shared_ptr<Interface::Dtc> &dtc,
                                                  const std::shared_ptr<OperatorManagement::Interface::Dtc> &opmDtc,
                                                  const std::function<bool(const Presentation &)> &predicate)
{
  m_opmDtc = opmDtc;
  m_predicate = predicate;
  connect(dtc.get(), &Interface::Dtc::presentationChanged,
          this, &PresentationManagementDialogModel::onDataChanged);
  dtc->presentations([this](const Presentation &p) { insertRow(p); m_scriptUsers.append(p.operatorId()); });


  QMap<qint32, OperatorManagement::User> users = opmDtc->users();
  m_users.clear();
  for (auto it = users.constBegin(); it != users.constEnd(); ++it)
  {
    if (m_scriptUsers.contains(it->id()))
      m_users.insert(static_cast<int>(it.value().id()), QString::fromStdString(it.value().name()));
  }

  INFO_LOG(m_logger) << "initModel - #presentations: " << m_vecData.size();
  return true;
}


QVariant PresentationManagementDialogModel::headerData(int section, Qt::Orientation orientation, int role) const
{
  if (role == LtsWidgets::LtsColumnFilterProxyModel::ComboboxFilterRole &&
      orientation == Qt::Horizontal &&
      section == Columns::Operator)
  {
    LtsWidgets::ComboboxFilterContent cfc;
    cfc.data.reserve(m_users.size());
    LtsWidgets::ComboboxFilterData cfd;
    for (auto it = m_users.constBegin(); it != m_users.constEnd(); ++it)
    {
      cfd.data = it.key();
      cfd.text = it.value();
      cfc.data.push_back(cfd);
    }
    cfc.sortItems = true;
    return cfc.toVariant();
  }
  else
    return LtsAbstractTableModel::headerData(section, orientation, role);
}

QVariant PresentationManagementDialogModel::data(const QModelIndex &index, int role) const
{
  if ((role != Qt::DisplayRole && role != Qt::BackgroundRole && role != LtsWidgets::LtsColumnFilterProxyModel::ComboboxFilterRole) ||
      !indexIsValid(index))
    return QVariant();

  const PresentationManagement::Presentation &pre = m_vecData.at(index.row());

  if (role == Qt::BackgroundRole)
  {
    if (pre.fileStatus() == PresentationManagement::FileStatus::Deleted)
      return QGuiApplication::palette().color(QPalette::Disabled, QPalette::AlternateBase);
    return QGuiApplication::palette().color(QPalette::Active, QPalette::Base);
  }

  if (role == Qt::DisplayRole)
  {
    switch (index.column())
    {
    case Id:
      return pre.id();
    case Name:
      return QString::fromStdString(pre.name());
    case Description:
      return QString::fromStdString(pre.description());
    case Operator:
      return QString::fromStdString(m_opmDtc->user(pre.operatorId()).name());
    case LastModified:
      return QDateTime::fromMSecsSinceEpoch(pre.lastModified());
    case Status:
      return PresentationManagement::toString(pre.fileStatus());
    }
  }

  if (role == LtsWidgets::LtsColumnFilterProxyModel::ComboboxFilterRole)
  {
    switch (index.column())
    {
    case Columns::Operator:
      return pre.operatorId();

    default:
      return {};
    }
    Q_UNREACHABLE();
  }

  return QVariant();
}

void  PresentationManagementDialogProxyModel::setSourceModel(QAbstractItemModel *sourceModel)
{
  m_sourceModel = qobject_cast< PresentationManagementDialogModel*>(sourceModel);
  LtsWidgets::LtsColumnFilterProxyModel::setSourceModel(sourceModel);
}

bool  PresentationManagementDialogProxyModel::lessThan(const QModelIndex &source_left, const QModelIndex &source_right) const
{
  if (!m_sourceModel ||
      source_left.column() != source_right.column() ||
      !source_left.isValid() ||
      !source_right.isValid())
    return LtsWidgets::LtsColumnFilterProxyModel::lessThan(source_left, source_right);
  const auto &dataLeft = m_sourceModel->m_vecData.at(source_left.row());
  const auto dataRight = m_sourceModel->m_vecData.at(source_right.row());
  switch (source_left.column())
  {
  case PresentationManagementDialogModel::LastModified:
    return dataLeft.lastModified() < dataRight.lastModified();
  case PresentationManagementDialogModel::Id:
  case PresentationManagementDialogModel::Name:
  case PresentationManagementDialogModel::Description:
  case PresentationManagementDialogModel::Operator:

  case PresentationManagementDialogModel::Status:

    break;
  }
  return LtsWidgets::LtsColumnFilterProxyModel::lessThan(source_left, source_right);
}

} // namespace PresentationManagement