// SPDX-FileCopyrightText: 2004-2022 Jesper K. Pedersen <jesper.pedersen@kdab.com>
// SPDX-FileCopyrightText: 2006 Tuomas Suutari <tuomas@nepnep.net>
// SPDX-FileCopyrightText: 2007 Dirk Mueller <mueller@kde.org>
// SPDX-FileCopyrightText: 2013-2023 Johannes Zarl-Zierl <johannes@zarl-zierl.at>
// SPDX-FileCopyrightText: 2015-2020 Tobias Leupold <tl@stonemx.de>
// SPDX-FileCopyrightText: 2018 Antoni Bella Pérez <antonibella5@yahoo.com>
// SPDX-FileCopyrightText: 2018 Yuri Chornoivan <yurchor@ukr.net>
//
// SPDX-License-Identifier: GPL-2.0-or-later

#include "TokenEditor.h"

#include <DB/Category.h>
#include <DB/CategoryCollection.h>
#include <DB/ImageDB.h>
#include <DB/search/ImageSearchInfo.h>
#include <kpabase/SettingsData.h>

#include <KLocalizedString>
#include <QDialogButtonBox>
#include <QGridLayout>
#include <QHBoxLayout>
#include <QPushButton>
#include <QVBoxLayout>
#include <qcheckbox.h>
#include <qlabel.h>
#include <qlayout.h>

using namespace MainWindow;

TokenEditor::TokenEditor(QWidget *parent)
    : QDialog(parent)
{
    setWindowTitle(i18nc("@title:window", "Remove Tokens"));
    QVBoxLayout *dialogLayout = new QVBoxLayout(this);

    QWidget *mainContents = new QWidget;
    QVBoxLayout *vlay = new QVBoxLayout(mainContents);

    QLabel *label = new QLabel(i18n("Select tokens to remove from all images and videos:"));
    vlay->addWidget(label);

    QGridLayout *grid = new QGridLayout;
    vlay->addLayout(grid);

    int index = 0;
    for (int ch = 'A'; ch <= 'Z'; ch++, index++) {
        QChar token = QChar::fromLatin1((char)ch);
        QCheckBox *box = new QCheckBox(token);
        grid->addWidget(box, index / 5, index % 5);
        m_checkBoxes.append(box);
    }

    QHBoxLayout *hlay = new QHBoxLayout;
    vlay->addLayout(hlay);

    hlay->addStretch(1);
    QPushButton *selectAll = new QPushButton(i18n("Select All"));
    QPushButton *selectNone = new QPushButton(i18n("Select None"));
    hlay->addWidget(selectAll);
    hlay->addWidget(selectNone);

    connect(selectAll, &QPushButton::clicked, this, &TokenEditor::selectAll);
    connect(selectNone, &QPushButton::clicked, this, &TokenEditor::selectNone);

    dialogLayout->addWidget(mainContents);

    QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    buttonBox->button(QDialogButtonBox::Ok)->setShortcut(Qt::CTRL | Qt::Key_Return);
    connect(buttonBox, &QDialogButtonBox::accepted, this, &TokenEditor::accept);
    connect(buttonBox, &QDialogButtonBox::rejected, this, &TokenEditor::reject);
    dialogLayout->addWidget(buttonBox);
}

void TokenEditor::show()
{
    QStringList tokens = tokensInUse();

    for (QCheckBox *box : qAsConst(m_checkBoxes)) {
        box->setChecked(false);
        QString txt = box->text().remove(QString::fromLatin1("&"));
        box->setEnabled(tokens.contains(txt));
    }
    QDialog::show();
}

void TokenEditor::selectAll()
{
    for (QCheckBox *box : qAsConst(m_checkBoxes)) {
        box->setChecked(true);
    }
}

void TokenEditor::selectNone()
{
    for (QCheckBox *box : qAsConst(m_checkBoxes)) {
        box->setChecked(false);
    }
}

/**
   I would love to use Settings::optionValue, but that method does not
    forget about an item once it has seen it, which is really what it should
    do anyway, otherwise it would be way to expensive in use.
*/
QStringList TokenEditor::tokensInUse()
{
    QStringList res;
    DB::CategoryPtr tokensCategory = DB::ImageDB::instance()->categoryCollection()->categoryForSpecial(DB::Category::TokensCategory);
    QMap<QString, DB::CountWithRange> map = DB::ImageDB::instance()->classify(DB::ImageSearchInfo(), tokensCategory->name(), DB::anyMediaType);
    for (auto it = map.constBegin(); it != map.constEnd(); ++it) {
        if (it.value().count > 0)
            res.append(it.key());
    }
    return res;
}

void TokenEditor::accept()
{
    DB::CategoryPtr tokensCategory = DB::ImageDB::instance()->categoryCollection()->categoryForSpecial(DB::Category::TokensCategory);
    for (const QCheckBox *box : qAsConst(m_checkBoxes)) {
        if (box->isChecked() && box->isEnabled()) {
            QString txt = box->text().remove(QString::fromLatin1("&"));
            tokensCategory->removeItem(txt);
            // re-add the token so that it is still available e.g. in the annotation dialog list select:
            tokensCategory->addItem(txt);
        }
    }
    QDialog::accept();
}

// vi:expandtab:tabstop=4 shiftwidth=4:

#include "moc_TokenEditor.cpp"
