/*
 * networkingpage.cc - Implementation of the UI.Network.AddressType page
 * horizon-qt5, the Qt 5 user interface for
 * Project Horizon
 *
 * Copyright (c) 2019 Adélie Linux and contributors.  All rights reserved.
 * This code is licensed under the AGPL 3.0 license, as noted in the
 * LICENSE-code file in the root directory of this repository.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

#include "networkingpage.hh"
#include "horizonwizard.hh"
#include "netdhcppage.hh"

#ifdef HAS_INSTALL_ENV
#   include <QDir>
#endif  /* HAS_INSTALL_ENV */
#include <QLabel>
#include <QVBoxLayout>

NetworkingPage::NetworkingPage(QWidget *parent) : HorizonWizardPage(parent) {
    loadWatermark("network");
    setTitle(tr("Networking Setup"));

    radioGroup = new QButtonGroup(this);

    simple = new QRadioButton(tr("&Automatic - my computer connects to the Internet directly\n"
                                 "or via a modem/router."));
    simple->setWhatsThis(tr("This option will configure your network automatically using DHCP."));
    advanced = new QRadioButton(tr("&Manual - my computer connects to an enterprise network,\n"
                                   "or I use a static IP address."));
    advanced->setWhatsThis(tr("This option will prompt you for your network information."));
    skip = new QRadioButton(tr("&Skip - I don't want to connect to a network or the Internet."));
    skip->setWhatsThis(tr("This option disables networking on this computer.  You can configure your computer's networking after installation."));
}

void NetworkingPage::initializePage() {
    QLabel *descLabel;
    QVBoxLayout *layout;

#ifdef HAS_INSTALL_ENV
    if(horizonWizard()->interfaces.empty()) {
        descLabel = new QLabel(tr(
            "No supported network interfaces have been detected on your computer.\n\n"
            "You will not be able to connect to a network nor the Internet.\n\n"
            "If you have a network interface attached to your computer, it may not be supported by Adélie Linux.  Please contact our community at https://help.adelielinux.org/ for help."));
    }
    else
#endif  /* HAS_INSTALL_ENV */
    {
        descLabel = new QLabel(tr(
            "If your computer is directly connected to the Internet via Ethernet or Wi-Fi using a modem or router, choose Automatic.\n\n"
            "If you need to set a static IP address, or you use a proxy server, choose Manual.\n\n"
            "If you don't want to configure networking or you don't want to use this computer on the Internet, choose Skip."));
    }
    descLabel->setWordWrap(true);

#ifdef HAS_INSTALL_ENV
    /* The interface list will be empty if we're in a Runtime Environment. */
    if(!horizonWizard()->interfaces.empty())
#endif  /* HAS_INSTALL_ENV */
    {
        radioGroup->addButton(simple);
        radioGroup->addButton(advanced);
    }
    radioGroup->addButton(skip);

    QObject::connect(radioGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
                     [=](QAbstractButton *button) {
        if(button == skip) {
            horizonWizard()->network = false;
        } else {
            horizonWizard()->network = true;
            if(button == simple) {
                horizonWizard()->net_dhcp = true;
            } else {
                horizonWizard()->net_dhcp = false;
            }
        }

        emit completeChanged();
    });

    layout = new QVBoxLayout;
    layout->addWidget(descLabel);
    layout->addSpacing(50);
    layout->addStretch();
#ifdef HAS_INSTALL_ENV
    /* The interface list will be empty if we're in a Runtime Environment. */
    if(!horizonWizard()->interfaces.empty())
#endif  /* HAS_INSTALL_ENV */
    {
        layout->addWidget(simple);
        layout->addStretch();
        layout->addWidget(advanced);
        layout->addStretch();
    }
    layout->addWidget(skip);

#ifdef HAS_INSTALL_ENV
    /* REQ: UI.Network.AddressType.MaybeNotDisable
     *
     * If we are running in an Installation Environment, we know we require
     * networking if /packages doesn't exist, because this is a live-only
     * media.  If we are running in a Runtime Environment, we always require
     * networking because we set the mirror as distfiles.adelielinux.org.
     *
     * This may change in the future, when we have mirror selection
     * implemented; we may have a way to do "local" mirrors.
     */
    if(!QDir("/packages").exists())
#endif  /* HAS_INSTALL_ENV */
    {
        QLabel *warnIcon = new QLabel;
        warnIcon->setPixmap(QIcon::fromTheme("dialog-warning").pixmap(QSize(16, 16)));
        warnIcon->setMaximumSize(QSize(16, 16));

        QLabel *warnLabel = new QLabel(tr("Networking cannot be skipped because a network connection is required to install packages."));
        warnLabel->setWordWrap(true);

        QHBoxLayout *warnLayout = new QHBoxLayout;
        warnLayout->addSpacing(32);
        warnLayout->addWidget(warnIcon);
        warnLayout->addWidget(warnLabel);

        layout->addLayout(warnLayout);

        skip->setEnabled(false);
    }

    setLayout(layout);
}

bool NetworkingPage::isComplete() const {
    return (radioGroup->checkedButton() != nullptr);
}

int NetworkingPage::nextId() const {
    if(radioGroup->checkedButton() == simple) {
        if(horizonWizard()->interfaces.size() != 1) {
            return HorizonWizard::Page_Network_Iface;
        } else {
            horizonWizard()->chosen_auto_iface =
                    (horizonWizard()->interfaces.begin())->first;
            if((horizonWizard()->interfaces.begin())->second.type
                    == HorizonWizard::Wireless) {
                return HorizonWizard::Page_Network_Wireless;
            } else {
                return HorizonWizard::Page_Network_DHCP;
            }
        }
    } else if(radioGroup->checkedButton() == advanced) {
        return HorizonWizard::Page_Network_Manual;
    } else {
        /* REQ: UI.Network.AddressType.Skip */
        return HorizonWizard::Page_DateTime;
    }
}

bool NetworkingPage::validatePage() {
#ifdef HAS_INSTALL_ENV
    /* What a hack!
     *
     * Independent Pages means the DHCP page is never cleaned, even when Back
     * is chosen.  So, we have to do it from here.  Note that it isn't enough
     * to do it from NetworkIfacePage, because if only we have one interface,
     * that page will never be shown!
     * REF: adelie/horizon#354 */
    horizonWizard()->removePage(HorizonWizard::Page_Network_DHCP);
    horizonWizard()->setPage(HorizonWizard::Page_Network_DHCP, new NetDHCPPage);
#endif  /* HAS_INSTALL_ENV */
    return true;
}