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

#include "server_databases_model.h"

#include <ngltools/ngltools_dtg.h>
#include <ngldb/nsqlquery.h>

#include <QDateTime>
#include <QPalette>

namespace DBAdministration
{

ServerDatabasesModel::ServerDatabasesModel(QObject *parent)
  : QAbstractTableModel(parent)
, m_logger(getLogger("ServerDatabasesModel"))
{}


ServerDatabasesModel::~ServerDatabasesModel()
{}


bool ServerDatabasesModel::initModel(const QSqlDatabase &db)
{
  beginResetModel();
  m_vecData.clear();
  endResetModel();

  NSqlQuery q(db);

  QString stmt = QStringLiteral("SELECT id, name, begin_time, end_time FROM exm.exercise");

  if (!q.exec(stmt))
    return false;

  while (q.next())
  {
    Exercise e;
    e.id        = q.value(0).toInt();
    e.name      = q.value(1).toString();
    e.startTime = q.value(2).toLongLong();
    e.endTime   = q.value(3).toLongLong();
    insertRow(e);
  }

  INFO_LOG(m_logger) << "initModel - #exercises: " << m_vecData.size();

  return true;
}


QVariant ServerDatabasesModel::data(const QModelIndex &index, int role) const
{
  if (role != Qt::DisplayRole || !index.isValid() || index.row() >= m_vecData.size())
    return QVariant();

  const Exercise &e = m_vecData.at(index.row());

  switch (index.column())
  {
  case Id:
    return e.id;
  case Name:
    return QString(e.name);
  case StartTime:
    return DTG::toStringMSec(e.startTime);
  case EndTime:
    return DTG::toStringMSec(e.endTime);
  }

  return QVariant();
}

int ServerDatabasesModel::rowCount(const QModelIndex &parent) const
{
  return parent.isValid() ? 0 : m_vecData.size();
}

int ServerDatabasesModel::columnCount(const QModelIndex &parent) const
{
  return parent.isValid() ? 0 : EndTime + 1;
}

QVariant ServerDatabasesModel::headerData(int section, Qt::Orientation orientation, int role) const
{
  if (orientation == Qt::Horizontal
      && role == Qt::DisplayRole)
  {
    Columns col = static_cast<Columns>(section);
    switch (col)
    {
    case Id:
      return tr("Id");
    case Name:
      return tr("Name");
    case StartTime:
      return tr("Start Time");
    case EndTime:
      return tr("End Time");
    }
  }
  return QAbstractTableModel::headerData(section, orientation, role);
}

Exercise ServerDatabasesModel::getRowData(int row) const
{
  if (row < 0 || row >= m_vecData.size())
    return Exercise();
  return m_vecData.at(row);
}

bool ServerDatabasesModel::insertRow(const Exercise &item)
{
  beginInsertRows(QModelIndex(), m_vecData.size(), m_vecData.size());
  m_vecData.append(item);
  endInsertRows();
  return true;
}

void ServerDatabasesProxyModel::setSourceModel(QAbstractItemModel *sourceModel)
{
  m_sourceModel = qobject_cast<ServerDatabasesModel*>(sourceModel);
  QSortFilterProxyModel::setSourceModel(sourceModel);
}

bool ServerDatabasesProxyModel::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 QSortFilterProxyModel::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 ServerDatabasesModel::StartTime:
    return dataLeft.startTime < dataRight.startTime;
  case ServerDatabasesModel::EndTime:
    return dataLeft.endTime < dataRight.endTime;
  case ServerDatabasesModel::Id:
  case ServerDatabasesModel::Name:
    break;
  }
  return QSortFilterProxyModel::lessThan(source_left, source_right);
}


} // namespace DBAdministration