// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2026 A-La-Karte Contributors

#include "alakarterunner.h"

#include <KLocalizedString>
#include <QDBusConnection>
#include <QDBusInterface>
#include <QDBusReply>
#include <QFile>
#include <QIcon>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QProcess>
#include <QStandardPaths>

K_PLUGIN_CLASS_WITH_JSON(AlakarteRunner, "plasma-runner-alakarte.json")

static const QString kGameCenterService = QStringLiteral("org.kde.GameCenter1");
static const QString kGameCenterPath = QStringLiteral("/org/kde/GameCenter1");
static const QString kGameCenterInterface = QStringLiteral("org.kde.GameCenter1");

static bool launchViaDaemon(QDBusConnection bus, const QVariantMap &launchSpec)
{
    if (!bus.isConnected()) {
        return false;
    }

    QDBusInterface iface(kGameCenterService, kGameCenterPath, kGameCenterInterface, bus);
    if (!iface.isValid()) {
        return false;
    }

    iface.setTimeout(2000);
    const QDBusReply<QString> reply = iface.call(QStringLiteral("Launch"), launchSpec);
    return reply.isValid() && !reply.value().isEmpty();
}

AlakarteRunner::AlakarteRunner(QObject *parent, const KPluginMetaData &metaData)
    : KRunner::AbstractRunner(parent, metaData)
{
    addSyntax(QStringLiteral("game <query>"), i18n("Search and launch games from A-La-Karte library"));
    addSyntax(QStringLiteral("<query>"), i18n("Search games by name"));
}

AlakarteRunner::~AlakarteRunner() = default;

QString AlakarteRunner::libraryPath() const
{
    return QStandardPaths::writableLocation(QStandardPaths::AppDataLocation).replace(QStringLiteral("krunner_alakarte"), QStringLiteral("alakarte"))
        + QStringLiteral("/library.json");
}

QList<AlakarteRunner::GameInfo> AlakarteRunner::loadGames() const
{
    QList<GameInfo> games;

    QFile file(libraryPath());
    if (!file.open(QIODevice::ReadOnly)) {
        return games;
    }

    QJsonDocument doc = QJsonDocument::fromJson(file.readAll());
    if (!doc.isArray()) {
        return games;
    }

    QJsonArray array = doc.array();
    for (const QJsonValue &value : array) {
        QJsonObject obj = value.toObject();

        // Skip hidden games
        if (obj[QStringLiteral("hidden")].toBool()) {
            continue;
        }

        GameInfo info;
        info.id = obj[QStringLiteral("id")].toString();
        info.name = obj[QStringLiteral("name")].toString();
        info.developer = obj[QStringLiteral("developer")].toString();
        info.platform = obj[QStringLiteral("platform")].toString();
        info.launchCommand = obj[QStringLiteral("launchCommand")].toString();
        info.coverPath = obj[QStringLiteral("coverUrl")].toString();

        if (!info.name.isEmpty() && !info.launchCommand.isEmpty()) {
            games.append(info);
        }
    }

    return games;
}

void AlakarteRunner::match(KRunner::RunnerContext &context)
{
    const QString query = context.query();

    if (query.length() < 2) {
        return;
    }

    QString searchTerm = query;
    bool explicitGameSearch = false;

    // Check for "game " prefix
    if (query.startsWith(QLatin1String("game "), Qt::CaseInsensitive)) {
        searchTerm = query.mid(5).trimmed();
        explicitGameSearch = true;
    }

    if (searchTerm.isEmpty()) {
        return;
    }

    QList<GameInfo> games = loadGames();

    for (const GameInfo &game : games) {
        bool matches = game.name.contains(searchTerm, Qt::CaseInsensitive) || game.developer.contains(searchTerm, Qt::CaseInsensitive);

        if (!matches && !explicitGameSearch) {
            continue;
        }

        if (!matches) {
            continue;
        }

        KRunner::QueryMatch match(this);
        match.setText(game.name);

        QString subtext;
        if (!game.developer.isEmpty()) {
            subtext = game.developer;
        }
        if (!game.platform.isEmpty()) {
            if (!subtext.isEmpty()) {
                subtext += QStringLiteral(" • ");
            }
            subtext += game.platform;
        }
        match.setSubtext(subtext);

        match.setIconName(QStringLiteral("applications-games"));
        match.setId(game.id);
        match.setData(game.launchCommand);

        // Calculate relevance
        qreal relevance = 0.7;
        if (game.name.startsWith(searchTerm, Qt::CaseInsensitive)) {
            relevance = 0.9;
        } else if (game.name.contains(searchTerm, Qt::CaseInsensitive)) {
            relevance = 0.8;
        }

        if (explicitGameSearch) {
            relevance += 0.05;
        }

        match.setRelevance(relevance);
        match.setCategoryRelevance(KRunner::QueryMatch::CategoryRelevance::Moderate);

        context.addMatch(match);
    }
}

void AlakarteRunner::run(const KRunner::RunnerContext &context, const KRunner::QueryMatch &match)
{
    Q_UNUSED(context)

    QString command = match.data().toString();
    if (command.isEmpty()) {
        return;
    }

    // Always try daemon first for all commands (including Steam/Lutris)
    if (!match.id().isEmpty()) {
        QVariantMap launchSpec = {
            {QStringLiteral("command"), command},
            {QStringLiteral("gameId"), match.id()},
            {QStringLiteral("displayName"), match.text()},
            {QStringLiteral("origin"), QStringLiteral("krunner")},
        };

        if (launchViaDaemon(QDBusConnection::systemBus(), launchSpec) || launchViaDaemon(QDBusConnection::sessionBus(), launchSpec)) {
            return;
        }
    }
}

#include "alakarterunner.moc"