/*
  This file is part of the Grantlee template system.

  Copyright (c) 2009,2010 Stephen Kelly <steveire@gmail.com>

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either version
  2.1 of the Licence, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "logic.h"

#include "util.h"

QVariant DefaultFilter::doFilter(const QVariant &input,
                                 const QVariant &argument,
                                 bool autoescape) const
{
  Q_UNUSED(autoescape)
  if (!input.isValid() || getSafeString(input).get().isEmpty())
    return argument;
  return getSafeString(input);
}

QVariant DefaultIfNoneFilter::doFilter(const QVariant &input,
                                       const QVariant &argument,
                                       bool autoescape) const
{
  Q_UNUSED(autoescape)
  if (!input.isValid())
    return argument;
  return getSafeString(input);
}

QVariant DivisibleByFilter::doFilter(const QVariant &input,
                                     const QVariant &argument,
                                     bool autoescape) const
{
  Q_UNUSED(autoescape)
  return (getSafeString(input).get().toInt() % QVariant(argument).value<int>()
          == 0)
             ? QStringLiteral("true")
             : QString();
}

QVariant YesNoFilter::doFilter(const QVariant &input, const QVariant &argument,
                               bool autoescape) const
{
  Q_UNUSED(autoescape)
  auto arg = getSafeString(argument);
  QString yes;
  QString no;
  QString maybe;
  if (arg.get().isEmpty()) {
    yes = QStringLiteral("yes");
    no = QStringLiteral("no");
    maybe = QStringLiteral("maybe");
  } else {
    auto argList = arg.get().split(QLatin1Char(','));
    auto numArgs = argList.size();
    if ((numArgs < 2) || (numArgs > 3)) {
      return input.value<QString>();
    } else if (numArgs == 2) {
      yes = argList.first();
      no = argList.at(1);
      maybe = argList.at(1);
    } else if (numArgs == 3) {
      yes = argList.first();
      no = argList.at(1);
      maybe = argList.at(2);
    }
  }
  if (!input.isValid())
    return maybe;
  if (!getSafeString(input).get().isEmpty())
    return yes;
  return no;
}
