/*
 *   SPDX-FileCopyrightText: 2020 Alexey Minnekhanov <alexey.min@gmail.com>
 *
 *   SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */

#include "AlpineApkResource.h"
#include "alpineapk_backend_logging.h" // generated by ECM

#include <AppStreamQt/developer.h>
#include <AppStreamQt/icon.h>
#include <AppStreamQt/pool.h>
#include <AppStreamQt/release.h>

#include <QFileInfo>
#include <QIcon>
#include <QProcess>

// libdiscover
#include "Transaction/AddonList.h"
#include "appstream/AppStreamUtils.h"
#include "config-paths.h"

AlpineApkResource::AlpineApkResource(const QtApk::Package &apkPkg,
                                     AppStream::Component &component,
                                     AbstractResource::Type typ,
                                     AbstractResourcesBackend *parent)
    : AbstractResource(parent)
    , m_state(AbstractResource::State::None)
    , m_type(typ)
    , m_pkg(apkPkg)
    , m_appsC(component)
{
}

QList<PackageState> AlpineApkResource::addonsInformation()
{
    return m_addons;
}

QString AlpineApkResource::availableVersion() const
{
    return m_availableVersion;
}

bool AlpineApkResource::hasCategory(const QString &category) const
{
    if (hasAppStreamData()) {
        return m_appsC.categories().contains(category);
    }
    return m_category == category;
}

QString AlpineApkResource::comment()
{
    if (hasAppStreamData()) {
        return m_appsC.summary();
    }
    return m_pkg.description;
}

quint64 AlpineApkResource::size()
{
    return m_pkg.size;
}

QUrl AlpineApkResource::homepage()
{
    if (hasAppStreamData()) {
        return m_appsC.url(AppStream::Component::UrlKindHomepage);
    }
    return QUrl::fromUserInput(m_pkg.url);
}

QUrl AlpineApkResource::helpURL()
{
    if (hasAppStreamData()) {
        return m_appsC.url(AppStream::Component::UrlKindHelp);
    }
    return QUrl();
}

QUrl AlpineApkResource::bugURL()
{
    if (hasAppStreamData()) {
        return m_appsC.url(AppStream::Component::UrlKindBugtracker);
    }
    return QUrl();
}

QUrl AlpineApkResource::donationURL()
{
    if (hasAppStreamData()) {
        return m_appsC.url(AppStream::Component::UrlKindDonation);
    }
    return QUrl();
}

/// xdg-compatible icon name to represent the resource, url or QIcon
QVariant AlpineApkResource::icon() const
{
    if (hasAppStreamData()) {
        const QList<AppStream::Icon> icns = m_appsC.icons();
        if (icns.size() == 0) {
            return QStringLiteral("package-x-generic");
        }
        QIcon ico;
        const AppStream::Icon &appIco = icns.first();

        switch (appIco.kind()) {
        case AppStream::Icon::KindStock:
            // we can create icons of this type directly from theme
            ico = QIcon::fromTheme(appIco.name());
            break;
        case AppStream::Icon::KindLocal:
        case AppStream::Icon::KindCached: {
            // try from predefined standard Alpine path
            const QString appstreamIconsPath = QLatin1String("/usr/share/app-info/icons/");
            const QString path = appstreamIconsPath + appIco.url().path();
            if (QFileInfo::exists(path)) {
                ico.addFile(path, appIco.size());
            } else {
                const QString altPath =
                    appstreamIconsPath + QStringLiteral("%1x%2/").arg(appIco.size().width()).arg(appIco.size().height()) + appIco.url().path();
                if (QFileInfo::exists(altPath)) {
                    ico.addFile(altPath, appIco.size());
                }
            }
        } break;
        default:
            break;
        }

        // return icon only if we successfully loaded it
        if (!ico.isNull()) {
            return QVariant::fromValue<QIcon>(ico);
        }

        // try to load from icon theme by package name, this is better
        //   than nothing and works surprisingly well for many packages
        ico = QIcon::fromTheme(m_pkg.name);
        if (!ico.isNull()) {
            return QVariant::fromValue<QIcon>(ico);
        }
    }
    return QStringLiteral("package-x-generic");
}

QString AlpineApkResource::installedVersion() const
{
    return m_pkg.version;
}

QJsonArray AlpineApkResource::licenses()
{
    return {QJsonObject{
        {QStringLiteral("name"), m_pkg.license},
        {QStringLiteral("url"), QStringLiteral("https://spdx.org/license-list")},
    }};
}

QString AlpineApkResource::longDescription()
{
    if (hasAppStreamData()) {
        return m_appsC.description();
    }
    return m_pkg.description;
}

QString AlpineApkResource::name() const
{
    if (hasAppStreamData()) {
        return m_appsC.name();
    }
    return m_pkg.name;
}

QString AlpineApkResource::origin() const
{
    return m_originSoruce;
}

QString AlpineApkResource::packageName() const
{
    return m_pkg.name;
}

QString AlpineApkResource::section()
{
    return m_sectionName;
}

AbstractResource::State AlpineApkResource::state()
{
    return m_state;
}

void AlpineApkResource::fetchChangelog()
{
    if (hasAppStreamData()) {
        Q_EMIT changelogFetched(AppStreamUtils::changelogToHtml(m_appsC));
    }
}

void AlpineApkResource::fetchScreenshots()
{
    if (hasAppStreamData()) {
        const Screenshots screenshots = AppStreamUtils::fetchScreenshots(m_appsC);
        Q_EMIT screenshotsFetched(screenshots);
    }
}

QString AlpineApkResource::appstreamId() const
{
    if (hasAppStreamData()) {
        return m_appsC.id();
    }
    return QString();
}

void AlpineApkResource::setState(AbstractResource::State state)
{
    m_state = state;
    Q_EMIT stateChanged();
}

void AlpineApkResource::setCategoryName(const QString &categoryName)
{
    m_category = categoryName;
}

void AlpineApkResource::setOriginSource(const QString &originSource)
{
    m_originSoruce = originSource;
}

void AlpineApkResource::setSection(const QString &sectionName)
{
    m_sectionName = sectionName;
}

void AlpineApkResource::setAddons(const AddonList &addons)
{
    const QStringList addonsToInstall = addons.addonsToInstall();
    for (const QString &toInstall : addonsToInstall) {
        setAddonInstalled(toInstall, true);
    }
    const QStringList addonsToRemove = addons.addonsToRemove();
    for (const QString &toRemove : addonsToRemove) {
        setAddonInstalled(toRemove, false);
    }
}

void AlpineApkResource::setAddonInstalled(const QString &addon, bool installed)
{
    for (PackageState &elem : m_addons) {
        if (elem.name() == addon) {
            elem.setInstalled(installed);
        }
    }
}

void AlpineApkResource::setAvailableVersion(const QString &av)
{
    m_availableVersion = av;
}

bool AlpineApkResource::hasAppStreamData() const
{
    return !m_appsC.id().isEmpty();
}

void AlpineApkResource::setAppStreamData(const AppStream::Component &component)
{
    m_appsC = component;
}

bool AlpineApkResource::canExecute() const
{
    if (hasAppStreamData()) {
        return (m_appsC.kind() == AppStream::Component::KindDesktopApp && (m_state == AbstractResource::Installed || m_state == AbstractResource::Upgradeable));
    }
    return false;
}

void AlpineApkResource::invokeApplication() const
{
    const QString desktopFile = QLatin1String("/usr/share/applications/") + appstreamId();
    if (QFile::exists(desktopFile)) {
        QProcess::startDetached(QStringLiteral("kstart5"), {QStringLiteral("--service"), desktopFile});
    }
}

QUrl AlpineApkResource::url() const
{
    if (hasAppStreamData()) {
        return QUrl(QStringLiteral("appstream://") + appstreamId());
    }
    return QUrl(QLatin1String("apk://") + packageName());
}

QString AlpineApkResource::author() const
{
    if (hasAppStreamData()) {
        return m_appsC.developer().name();
    }
    return m_pkg.maintainer;
}

QString AlpineApkResource::sourceIcon() const
{
    return QStringLiteral("alpine-linux-logo-icon");
}

QDate AlpineApkResource::releaseDate() const
{
    if (hasAppStreamData()) {
        if (const auto releases = m_appsC.releasesPlain(); !releases.isEmpty()) {
            auto release = releases.indexSafe(0);
            if (release) {
                return release->timestamp().date();
            }
        }
    }
    // just build date is fine, too
    return m_pkg.buildTime.date();
}