// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2024 A-La-Karte Contributors

#include "game.h"

#include <KLocalizedString>
#include <QCryptographicHash>
#include <QJsonValue>
#include <QLocale>
#include <QUuid>

Game::Game(QObject *parent)
    : QObject(parent)
    , m_id(QUuid::createUuid().toString(QUuid::WithoutBraces))
    , m_dateAdded(QDateTime::currentDateTime())
{
}

Game::Game(const QString &id, const QString &name, QObject *parent)
    : QObject(parent)
    , m_id(id.isEmpty() ? QUuid::createUuid().toString(QUuid::WithoutBraces) : id)
    , m_name(name)
    , m_dateAdded(QDateTime::currentDateTime())
{
}

QString Game::id() const
{
    return m_id;
}

QString Game::name() const
{
    return m_name;
}

void Game::setName(const QString &name)
{
    if (m_name != name) {
        m_name = name;
        Q_EMIT nameChanged();
    }
}

QString Game::description() const
{
    return m_description;
}

void Game::setDescription(const QString &description)
{
    if (m_description != description) {
        m_description = description;
        Q_EMIT descriptionChanged();
    }
}

QString Game::developer() const
{
    return m_developer;
}

void Game::setDeveloper(const QString &developer)
{
    if (m_developer != developer) {
        m_developer = developer;
        Q_EMIT developerChanged();
    }
}

QString Game::publisher() const
{
    return m_publisher;
}

void Game::setPublisher(const QString &publisher)
{
    if (m_publisher != publisher) {
        m_publisher = publisher;
        Q_EMIT publisherChanged();
    }
}

QUrl Game::coverUrl() const
{
    return m_coverUrl;
}

void Game::setCoverUrl(const QUrl &url)
{
    if (m_coverUrl != url) {
        m_coverUrl = url;
        Q_EMIT coverUrlChanged();
    }
}

QUrl Game::iconUrl() const
{
    return m_iconUrl;
}

void Game::setIconUrl(const QUrl &url)
{
    if (m_iconUrl != url) {
        m_iconUrl = url;
        Q_EMIT iconUrlChanged();
    }
}

QString Game::launchCommand() const
{
    return m_launchCommand;
}

void Game::setLaunchCommand(const QString &command)
{
    if (m_launchCommand != command) {
        m_launchCommand = command;
        Q_EMIT launchCommandChanged();
    }
}

QString Game::workingDirectory() const
{
    return m_workingDirectory;
}

void Game::setWorkingDirectory(const QString &dir)
{
    if (m_workingDirectory != dir) {
        m_workingDirectory = dir;
        Q_EMIT workingDirectoryChanged();
    }
}

QVariantMap Game::launchEnv() const
{
    return m_launchEnv;
}

void Game::setLaunchEnv(const QVariantMap &env)
{
    if (m_launchEnv != env) {
        m_launchEnv = env;
        Q_EMIT launchEnvChanged();
    }
}

QString Game::launchRunner() const
{
    return m_launchRunner;
}

void Game::setLaunchRunner(const QString &runner)
{
    if (m_launchRunner != runner) {
        m_launchRunner = runner;
        Q_EMIT launchRunnerChanged();
    }
}

QString Game::launchRunnerPath() const
{
    return m_launchRunnerPath;
}

void Game::setLaunchRunnerPath(const QString &path)
{
    if (m_launchRunnerPath != path) {
        m_launchRunnerPath = path;
        Q_EMIT launchRunnerPathChanged();
    }
}

QString Game::launchPrefixPath() const
{
    return m_launchPrefixPath;
}

void Game::setLaunchPrefixPath(const QString &path)
{
    if (m_launchPrefixPath != path) {
        m_launchPrefixPath = path;
        Q_EMIT launchPrefixPathChanged();
    }
}

QString Game::platform() const
{
    return m_platform;
}

void Game::setPlatform(const QString &platform)
{
    if (m_platform != platform) {
        m_platform = platform;
        Q_EMIT platformChanged();
    }
}

QString Game::platformId() const
{
    return m_platformId;
}

void Game::setPlatformId(const QString &id)
{
    if (m_platformId != id) {
        m_platformId = id;
        Q_EMIT platformIdChanged();
    }
}

QDateTime Game::dateAdded() const
{
    return m_dateAdded;
}

void Game::setDateAdded(const QDateTime &dateTime)
{
    if (m_dateAdded != dateTime) {
        m_dateAdded = dateTime;
        Q_EMIT dateAddedChanged();
    }
}

QDateTime Game::lastPlayed() const
{
    return m_lastPlayed;
}

void Game::setLastPlayed(const QDateTime &dateTime)
{
    if (m_lastPlayed != dateTime) {
        m_lastPlayed = dateTime;
        Q_EMIT lastPlayedChanged();
    }
}

qint64 Game::playTime() const
{
    return m_playTime;
}

void Game::setPlayTime(qint64 seconds)
{
    if (m_playTime != seconds) {
        m_playTime = seconds;
        Q_EMIT playTimeChanged();
    }
}

bool Game::favorite() const
{
    return m_favorite;
}

void Game::setFavorite(bool favorite)
{
    if (m_favorite != favorite) {
        m_favorite = favorite;
        Q_EMIT favoriteChanged();
    }
}

bool Game::hidden() const
{
    return m_hidden;
}

void Game::setHidden(bool hidden)
{
    if (m_hidden != hidden) {
        m_hidden = hidden;
        Q_EMIT hiddenChanged();
    }
}

bool Game::installed() const
{
    return m_installed;
}

void Game::setInstalled(bool installed)
{
    if (m_installed != installed) {
        m_installed = installed;
        Q_EMIT installedChanged();
    }
}

bool Game::running() const
{
    return m_running;
}

void Game::setRunning(bool running)
{
    if (m_running != running) {
        m_running = running;
        Q_EMIT runningChanged();
    }
}

QJsonObject Game::toJson() const
{
    QJsonObject obj;
    obj[QStringLiteral("id")] = m_id;
    obj[QStringLiteral("name")] = m_name;
    obj[QStringLiteral("description")] = m_description;
    obj[QStringLiteral("developer")] = m_developer;
    obj[QStringLiteral("publisher")] = m_publisher;
    obj[QStringLiteral("coverUrl")] = m_coverUrl.toString();
    obj[QStringLiteral("iconUrl")] = m_iconUrl.toString();
    obj[QStringLiteral("launchCommand")] = m_launchCommand;
    obj[QStringLiteral("workingDirectory")] = m_workingDirectory;
    obj[QStringLiteral("platform")] = m_platform;
    obj[QStringLiteral("platformId")] = m_platformId;
    obj[QStringLiteral("dateAdded")] = m_dateAdded.toString(Qt::ISODate);
    obj[QStringLiteral("lastPlayed")] = m_lastPlayed.toString(Qt::ISODate);
    obj[QStringLiteral("playTime")] = m_playTime;
    obj[QStringLiteral("favorite")] = m_favorite;
    obj[QStringLiteral("hidden")] = m_hidden;
    obj[QStringLiteral("installed")] = m_installed;

    const bool hasLaunchConfig = !m_launchEnv.isEmpty() || !m_launchRunner.isEmpty() || !m_launchRunnerPath.isEmpty() || !m_launchPrefixPath.isEmpty();
    if (hasLaunchConfig) {
        QJsonObject launchObj;

        if (!m_launchEnv.isEmpty()) {
            QJsonObject envObj;
            for (auto it = m_launchEnv.constBegin(); it != m_launchEnv.constEnd(); ++it) {
                envObj.insert(it.key(), QJsonValue::fromVariant(it.value()));
            }
            launchObj.insert(QStringLiteral("env"), envObj);
        }

        if (!m_launchRunner.isEmpty()) {
            launchObj.insert(QStringLiteral("runner"), m_launchRunner);
        }
        if (!m_launchRunnerPath.isEmpty()) {
            launchObj.insert(QStringLiteral("runnerPath"), m_launchRunnerPath);
        }
        if (!m_launchPrefixPath.isEmpty()) {
            launchObj.insert(QStringLiteral("prefixPath"), m_launchPrefixPath);
        }

        obj.insert(QStringLiteral("launch"), launchObj);
    }

    return obj;
}

Game *Game::fromJson(const QJsonObject &json, QObject *parent)
{
    QString id = json[QStringLiteral("id")].toString();
    QString name = json[QStringLiteral("name")].toString();

    if (name.isEmpty()) {
        return nullptr;
    }

    const QString platformId = json[QStringLiteral("platformId")].toString();
    const QString platform = json[QStringLiteral("platform")].toString();
    const QString launchCommand = json[QStringLiteral("launchCommand")].toString();
    const QString workingDirectory = json[QStringLiteral("workingDirectory")].toString();
    if (id.isEmpty()) {
        const QByteArray fingerprint =
            (platformId + QLatin1Char('|') + platform + QLatin1Char('|') + name + QLatin1Char('|') + launchCommand + QLatin1Char('|') + workingDirectory)
                .toUtf8();
        const QByteArray hash = QCryptographicHash::hash(fingerprint, QCryptographicHash::Sha1).toHex();
        id = QStringLiteral("legacy-") + QString::fromLatin1(hash);
    }

    Game *game = new Game(id, name, parent);
    game->setDescription(json[QStringLiteral("description")].toString());
    game->setDeveloper(json[QStringLiteral("developer")].toString());
    game->setPublisher(json[QStringLiteral("publisher")].toString());
    game->setCoverUrl(QUrl(json[QStringLiteral("coverUrl")].toString()));
    game->setIconUrl(QUrl(json[QStringLiteral("iconUrl")].toString()));
    game->setLaunchCommand(launchCommand);
    game->setWorkingDirectory(workingDirectory);
    game->setPlatform(platform);
    game->setPlatformId(platformId);
    game->setDateAdded(QDateTime::fromString(json[QStringLiteral("dateAdded")].toString(), Qt::ISODate));
    game->setLastPlayed(QDateTime::fromString(json[QStringLiteral("lastPlayed")].toString(), Qt::ISODate));
    game->setPlayTime(json[QStringLiteral("playTime")].toInteger());
    game->setFavorite(json[QStringLiteral("favorite")].toBool());
    game->setHidden(json[QStringLiteral("hidden")].toBool());
    game->setInstalled(json[QStringLiteral("installed")].toBool(true));

    QVariantMap env;
    QString runner;
    QString runnerPath;
    QString prefixPath;
    const QJsonValue launchValue = json.value(QStringLiteral("launch"));
    if (launchValue.isObject()) {
        const QJsonObject launchObj = launchValue.toObject();
        const QJsonValue envValue = launchObj.value(QStringLiteral("env"));
        if (envValue.isObject()) {
            env = envValue.toObject().toVariantMap();
        }

        runner = launchObj.value(QStringLiteral("runner")).toString();
        runnerPath = launchObj.value(QStringLiteral("runnerPath")).toString();
        prefixPath = launchObj.value(QStringLiteral("prefixPath")).toString();
    }

    const QJsonValue legacyEnvValue = json.value(QStringLiteral("launchEnv"));
    if (env.isEmpty() && legacyEnvValue.isObject()) {
        env = legacyEnvValue.toObject().toVariantMap();
    }

    if (runner.isEmpty()) {
        runner = json.value(QStringLiteral("launchRunner")).toString();
    }
    if (runnerPath.isEmpty()) {
        runnerPath = json.value(QStringLiteral("launchRunnerPath")).toString();
    }
    if (prefixPath.isEmpty()) {
        prefixPath = json.value(QStringLiteral("launchPrefixPath")).toString();
    }

    if (!env.isEmpty()) {
        game->setLaunchEnv(env);
    }

    if (!runner.isEmpty()) {
        game->setLaunchRunner(runner);
    }
    if (!runnerPath.isEmpty()) {
        game->setLaunchRunnerPath(runnerPath);
    }
    if (!prefixPath.isEmpty()) {
        game->setLaunchPrefixPath(prefixPath);
    }

    return game;
}

QString Game::playTimeFormatted() const
{
    if (m_playTime == 0) {
        return i18n("Never played");
    }

    qint64 hours = m_playTime / 3600;
    qint64 minutes = (m_playTime % 3600) / 60;

    if (hours > 0) {
        return i18np("%1 hour", "%1 hours", hours) + QStringLiteral(" ") + i18np("%1 minute", "%1 minutes", minutes);
    }
    return i18np("%1 minute", "%1 minutes", minutes);
}

QString Game::lastPlayedFormatted() const
{
    if (!m_lastPlayed.isValid()) {
        return i18n("Never");
    }

    QDateTime now = QDateTime::currentDateTime();
    qint64 days = m_lastPlayed.daysTo(now);

    if (days == 0) {
        return i18n("Today");
    } else if (days == 1) {
        return i18n("Yesterday");
    } else if (days < 7) {
        return i18np("%1 day ago", "%1 days ago", days);
    } else if (days < 30) {
        return i18np("%1 week ago", "%1 weeks ago", days / 7);
    } else if (days < 365) {
        return i18np("%1 month ago", "%1 months ago", days / 30);
    }
    return QLocale().toString(m_lastPlayed, QLocale::ShortFormat);
}

QString Game::dateAddedFormatted() const
{
    if (!m_dateAdded.isValid()) {
        return i18n("Unknown");
    }

    QDateTime now = QDateTime::currentDateTime();
    qint64 days = m_dateAdded.daysTo(now);

    if (days == 0) {
        return i18n("Today");
    } else if (days == 1) {
        return i18n("Yesterday");
    } else if (days < 7) {
        return i18np("%1 day ago", "%1 days ago", days);
    } else if (days < 30) {
        return i18np("%1 week ago", "%1 weeks ago", days / 7);
    } else if (days < 365) {
        return i18np("%1 month ago", "%1 months ago", days / 30);
    }
    return QLocale().toString(m_dateAdded, QLocale::ShortFormat);
}