/**
 * 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.
 *
 * Foobar 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 Foobar.  If not, see <https://www.gnu.org/licenses/>.
 *
 * The initial version of the source code is inherited from gpg4usb-team.
 * Their source code version also complies with GNU General Public License.
 *
 * The source code version of this software was modified and released
 * by Saturneric<eric@bktus.com> starting on May 12, 2021.
 *
 */

#include "ui/QuitDialog.h"

QuitDialog::QuitDialog(QWidget *parent, const QHash<int, QString>& unsavedDocs)
        : QDialog(parent) {
    setWindowTitle(tr("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);
    auto *warn_label = new QLabel(
            tr("<h3>%1 files contain unsaved information.<br/>Save the changes before closing?</h3>").arg(row));
    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(tr("Check the files you want to save:"));
    auto *note_label = new QLabel(tr("<b>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;
}