/*
 * Copyright (c) 2010 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
 * Copyright (c) 2010 Tobias Koenig <tokoe@kdab.com>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "aclentrydialog_p.h"
#include "aclutils_p.h"

#include "libkdepim/addresseelineedit.h"

#include <Akonadi/Contact/EmailAddressSelectionDialog>

#include <KLocalizedString>

#include <QButtonGroup>
#include <QGridLayout>
#include <QGroupBox>
#include <QLabel>
#include <QPushButton>
#include <QRadioButton>
#include <QVBoxLayout>
#include <KConfigGroup>
#include <QDialogButtonBox>

using namespace PimCommon;

class AclEntryDialog::Private
{
public:
    Private(AclEntryDialog *qq)
        : q(qq),
          mButtonGroup(Q_NULLPTR),
          mUserIdLineEdit(Q_NULLPTR),
          mButtonLayout(Q_NULLPTR),
          mOkButton(Q_NULLPTR)
    {
    }

    void slotChanged();
    void slotSelectAddresses();

    AclEntryDialog *q;
    QButtonGroup *mButtonGroup;
    KPIM::AddresseeLineEdit *mUserIdLineEdit;
    QVBoxLayout *mButtonLayout;
    KIMAP::Acl::Rights mCustomPermissions;
    QPushButton *mOkButton;
};

void AclEntryDialog::Private::slotChanged()
{
    mOkButton->setEnabled(!mUserIdLineEdit->text().trimmed().isEmpty() && mButtonGroup->checkedButton() != Q_NULLPTR);
}

void AclEntryDialog::Private::slotSelectAddresses()
{
    Akonadi::EmailAddressSelectionDialog dlg;

    if (!dlg.exec()) {
        return;
    }

    const QString text = !dlg.selectedAddresses().isEmpty() ?
                         dlg.selectedAddresses().at(0).quotedEmail() :
                         QString();

    mUserIdLineEdit->setText(text);
}

AclEntryDialog::AclEntryDialog(QWidget *parent)
    : QDialog(parent), d(new Private(this))
{
    QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    QVBoxLayout *mainLayout = new QVBoxLayout;
    setLayout(mainLayout);
    d->mOkButton = buttonBox->button(QDialogButtonBox::Ok);
    d->mOkButton->setDefault(true);
    d->mOkButton->setShortcut(Qt::CTRL | Qt::Key_Return);
    connect(buttonBox, &QDialogButtonBox::accepted, this, &AclEntryDialog::accept);
    connect(buttonBox, &QDialogButtonBox::rejected, this, &AclEntryDialog::reject);

    QWidget *page = new QWidget(this);
    mainLayout->addWidget(page);
    mainLayout->addWidget(buttonBox);

    QGridLayout *layout = new QGridLayout(page);
    layout->setMargin(0);

    QLabel *label = new QLabel(i18n("&User identifier:"), page);
    layout->addWidget(label, 0, 0);

    d->mUserIdLineEdit = new KPIM::AddresseeLineEdit(page);
    layout->addWidget(d->mUserIdLineEdit, 0, 1);
    label->setBuddy(d->mUserIdLineEdit);
    d->mUserIdLineEdit->setWhatsThis(
        i18nc("@info:whatsthis",
              "The User Identifier is the login of the user on the IMAP server. "
              "This can be a simple user name or the full email address of the user; "
              "the login for your own account on the server will tell you which one it is."));

    QPushButton *button = new QPushButton(i18nc("select an email address", "Se&lect..."), page);
    layout->addWidget(button, 0, 2);

    QGroupBox *groupBox = new QGroupBox(i18n("Permissions"), page);
    d->mButtonLayout = new QVBoxLayout(groupBox);

    d->mButtonGroup = new QButtonGroup(groupBox);

    for (unsigned int i = 0; i < AclUtils::standardPermissionsCount(); ++i) {
        const KIMAP::Acl::Rights permissions = AclUtils::permissionsForIndex(i);

        QRadioButton *radioButton =
            new QRadioButton(AclUtils::permissionsToUserString(permissions), groupBox);
        d->mButtonLayout->addWidget(radioButton);
        d->mButtonGroup->addButton(radioButton, permissions);
    }

    d->mButtonLayout->addStretch(1);
    layout->addWidget(groupBox, 1, 0, 1, 3);

    label =
        new QLabel(
        i18n("<b>Note: </b>Renaming requires write permissions on the parent folder."), page);
    layout->addWidget(label, 2, 0, 1, 3);
    layout->setRowStretch(2, 10);

    connect(d->mUserIdLineEdit, SIGNAL(textChanged(QString)), SLOT(slotChanged()));
    connect(button, SIGNAL(clicked()), SLOT(slotSelectAddresses()));
    connect(d->mButtonGroup, SIGNAL(buttonClicked(int)), SLOT(slotChanged()));

    d->mOkButton->setEnabled(false);

    d->mUserIdLineEdit->setFocus();

}

AclEntryDialog::~AclEntryDialog()
{
    delete d;
}

void AclEntryDialog::setUserId(const QString &userId)
{
    d->mUserIdLineEdit->setText(userId);

    d->mOkButton->setEnabled(!userId.isEmpty());
}

QString AclEntryDialog::userId() const
{
    return d->mUserIdLineEdit->text();
}

void AclEntryDialog::setPermissions(KIMAP::Acl::Rights permissions)
{
    QAbstractButton *button = d->mButtonGroup->button(KIMAP::Acl::normalizedRights(permissions));

    if (button) {
        button->setChecked(true);
    } else {
        QRadioButton *radioButton =
            new QRadioButton(AclUtils::permissionsToUserString(permissions));

        d->mButtonLayout->addWidget(radioButton);
        d->mButtonGroup->addButton(radioButton, permissions);
    }

    d->mCustomPermissions = permissions;
}

KIMAP::Acl::Rights AclEntryDialog::permissions() const
{
    QAbstractButton *button = d->mButtonGroup->checkedButton();

    if (!button) {
        return d->mCustomPermissions;
    }

    return KIMAP::Acl::denormalizedRights(
               static_cast<KIMAP::Acl::Rights>(d->mButtonGroup->id(button)));
}

#include "moc_aclentrydialog_p.cpp"