/**
 * Copyright (C) 2021 Saturneric
 *
 * This file is part of GpgFrontend.
 *
 * GpgFrontend is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GpgFrontend 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
 *
 * The initial version of the source code is inherited from
 * the gpg4usb project, which is under GPL-3.0-or-later.
 *
 * All the source code of GpgFrontend was modified and released by
 * Saturneric<eric@bktus.com> starting on May 12, 2021.
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */

#include "ui/QuitDialog.h"

#include <boost/format.hpp>

namespace GpgFrontend::UI {

QuitDialog::QuitDialog(QWidget* parent, const QHash<int, QString>& unsavedDocs)
    : QDialog(parent) {
  setWindowTitle(_("Unsaved Files"));
  setModal(true);
  discarded = false;

  /*
   * Table of unsaved documents
   */
  QHashIterator<int, QString> i(unsavedDocs);
  int row = 0;
  mFileList = new QTableWidget(this);
  mFileList->horizontalHeader()->hide();
  mFileList->setColumnCount(3);
  mFileList->setColumnWidth(0, 20);
  mFileList->setColumnHidden(2, true);
  mFileList->verticalHeader()->hide();
  mFileList->setShowGrid(false);
  mFileList->setEditTriggers(QAbstractItemView::NoEditTriggers);
  mFileList->setFocusPolicy(Qt::NoFocus);
  mFileList->horizontalHeader()->setStretchLastSection(true);
  // fill the table
  i.toFront();  // jump to the end of list to fill the table backwards
  while (i.hasNext()) {
    i.next();
    mFileList->setRowCount(mFileList->rowCount() + 1);

    // checkbox in front of filename
    auto* tmp0 = new QTableWidgetItem();
    tmp0->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
    tmp0->setCheckState(Qt::Checked);
    mFileList->setItem(row, 0, tmp0);

    // filename
    auto* tmp1 = new QTableWidgetItem(i.value());
    mFileList->setItem(row, 1, tmp1);

    // tab-index in hidden column
    auto* tmp2 = new QTableWidgetItem(QString::number(i.key()));
    mFileList->setItem(row, 2, tmp2);
    ++row;
  }
  /*
   *  Warnbox with icon and text
   */
  auto pixmap = QPixmap(":error.png");
  pixmap = pixmap.scaled(50, 50, Qt::KeepAspectRatio, Qt::SmoothTransformation);
  auto* warn_icon = new QLabel();
  warn_icon->setPixmap(pixmap);

  const auto info =
      boost::format(_("%1% files contain unsaved information.<br/>Save the "
                      "changes before closing?")) %
      std::to_string(row);
  auto* warn_label = new QLabel(QString::fromStdString(info.str()));
  auto* warnBoxLayout = new QHBoxLayout();
  warnBoxLayout->addWidget(warn_icon);
  warnBoxLayout->addWidget(warn_label);
  warnBoxLayout->setAlignment(Qt::AlignLeft);
  auto* warnBox = new QWidget(this);
  warnBox->setLayout(warnBoxLayout);

  /*
   *  Two labels on top and under the filelist
   */
  auto* checkLabel = new QLabel(_("Check the files you want to save:"));
  auto* note_label = new QLabel(
      "<b>" + QString(_("Note")) + ":</b>" +
      _("If you don't save these files, all changes are lost.") + "<br/>");

  /*
   *  Buttonbox
   */
  auto* buttonBox =
      new QDialogButtonBox(QDialogButtonBox::Discard | QDialogButtonBox::Save |
                           QDialogButtonBox::Cancel);
  connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
  connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
  QPushButton* btnNoKey = buttonBox->button(QDialogButtonBox::Discard);
  connect(btnNoKey, SIGNAL(clicked()), SLOT(slotMyDiscard()));

  /*
   *  Set the layout
   */
  auto* vbox = new QVBoxLayout();
  vbox->addWidget(warnBox);
  vbox->addWidget(checkLabel);
  vbox->addWidget(mFileList);
  vbox->addWidget(note_label);
  vbox->addWidget(buttonBox);
  this->setLayout(vbox);
}

void QuitDialog::slotMyDiscard() {
  discarded = true;
  reject();
}

bool QuitDialog::isDiscarded() const { return discarded; }

QList<int> QuitDialog::getTabIdsToSave() {
  QList<int> tabIdsToSave;
  for (int i = 0; i < mFileList->rowCount(); i++) {
    if (mFileList->item(i, 0)->checkState() == Qt::Checked) {
      tabIdsToSave << mFileList->item(i, 2)->text().toInt();
    }
  }
  return tabIdsToSave;
}

}  // namespace GpgFrontend::UI