// SPDX-License-Identifier: GPL-3.0-only
/*
 *  PolyMC - Minecraft Launcher
 *  Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
 *
 *  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, version 3.
 *
 *  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, see <https://www.gnu.org/licenses/>.
 *
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 *      Copyright 2013-2021 MultiMC Contributors
 *
 *      Licensed under the Apache License, Version 2.0 (the "License");
 *      you may not use this file except in compliance with the License.
 *      You may obtain a copy of the License at
 *
 *          http://www.apache.org/licenses/LICENSE-2.0
 *
 *      Unless required by applicable law or agreed to in writing, software
 *      distributed under the License is distributed on an "AS IS" BASIS,
 *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *      See the License for the specific language governing permissions and
 *      limitations under the License.
 */

#include "BaseInstance.h"

#include <QFileInfo>
#include <QDir>
#include <QDebug>

#include "settings/INISettingsObject.h"
#include "settings/Setting.h"
#include "settings/OverrideSetting.h"

#include "FileSystem.h"
#include "Commandline.h"
#include "BuildConfig.h"

BaseInstance::BaseInstance(SettingsObjectPtr globalSettings, SettingsObjectPtr settings, const QString &rootDir)
    : QObject()
{
    m_settings = settings;
    m_rootDir = rootDir;

    m_settings->registerSetting("name", "Unnamed Instance");
    m_settings->registerSetting("iconKey", "default");
    m_settings->registerSetting("notes", "");
    m_settings->registerSetting("lastLaunchTime", 0);
    m_settings->registerSetting("totalTimePlayed", 0);
    m_settings->registerSetting("lastTimePlayed", 0);
    m_settings->registerSetting("InstanceType", "");

    // Custom Commands
    auto commandSetting = m_settings->registerSetting({"OverrideCommands","OverrideLaunchCmd"}, false);
    m_settings->registerOverride(globalSettings->getSetting("PreLaunchCommand"), commandSetting);
    m_settings->registerOverride(globalSettings->getSetting("WrapperCommand"), commandSetting);
    m_settings->registerOverride(globalSettings->getSetting("PostExitCommand"), commandSetting);

    // Console
    auto consoleSetting = m_settings->registerSetting("OverrideConsole", false);
    m_settings->registerOverride(globalSettings->getSetting("ShowConsole"), consoleSetting);
    m_settings->registerOverride(globalSettings->getSetting("AutoCloseConsole"), consoleSetting);
    m_settings->registerOverride(globalSettings->getSetting("ShowConsoleOnError"), consoleSetting);
    m_settings->registerOverride(globalSettings->getSetting("LogPrePostOutput"), consoleSetting);

    m_settings->registerPassthrough(globalSettings->getSetting("ConsoleMaxLines"), nullptr);
    m_settings->registerPassthrough(globalSettings->getSetting("ConsoleOverflowStop"), nullptr);
}

QString BaseInstance::getPreLaunchCommand()
{
    return settings()->get("PreLaunchCommand").toString();
}

QString BaseInstance::getWrapperCommand()
{
    return settings()->get("WrapperCommand").toString();
}

QString BaseInstance::getPostExitCommand()
{
    return settings()->get("PostExitCommand").toString();
}

int BaseInstance::getConsoleMaxLines() const
{
    auto lineSetting = settings()->getSetting("ConsoleMaxLines");
    bool conversionOk = false;
    int maxLines = lineSetting->get().toInt(&conversionOk);
    if(!conversionOk)
    {
        maxLines = lineSetting->defValue().toInt();
        qWarning() << "ConsoleMaxLines has nonsensical value, defaulting to" << maxLines;
    }
    return maxLines;
}

bool BaseInstance::shouldStopOnConsoleOverflow() const
{
    return settings()->get("ConsoleOverflowStop").toBool();
}

void BaseInstance::iconUpdated(QString key)
{
    if(iconKey() == key)
    {
        emit propertiesChanged(this);
    }
}

void BaseInstance::invalidate()
{
    changeStatus(Status::Gone);
    qDebug() << "Instance" << id() << "has been invalidated.";
}

void BaseInstance::changeStatus(BaseInstance::Status newStatus)
{
    Status status = currentStatus();
    if(status != newStatus)
    {
        m_status = newStatus;
        emit statusChanged(status, newStatus);
    }
}

BaseInstance::Status BaseInstance::currentStatus() const
{
    return m_status;
}

QString BaseInstance::id() const
{
    return QFileInfo(instanceRoot()).fileName();
}

bool BaseInstance::isRunning() const
{
    return m_isRunning;
}

void BaseInstance::setRunning(bool running)
{
    if(running == m_isRunning)
        return;

    m_isRunning = running;

    if(!m_settings->get("RecordGameTime").toBool())
    {
        emit runningStatusChanged(running);
        return;
    }

    if(running)
    {
        m_timeStarted = QDateTime::currentDateTime();
    }
    else
    {
        QDateTime timeEnded = QDateTime::currentDateTime();

        qint64 current = settings()->get("totalTimePlayed").toLongLong();
        settings()->set("totalTimePlayed", current + m_timeStarted.secsTo(timeEnded));
        settings()->set("lastTimePlayed", m_timeStarted.secsTo(timeEnded));

        emit propertiesChanged(this);
    }

    emit runningStatusChanged(running);
}

int64_t BaseInstance::totalTimePlayed() const
{
    qint64 current = settings()->get("totalTimePlayed").toLongLong();
    if(m_isRunning)
    {
        QDateTime timeNow = QDateTime::currentDateTime();
        return current + m_timeStarted.secsTo(timeNow);
    }
    return current;
}

int64_t BaseInstance::lastTimePlayed() const
{
    if(m_isRunning)
    {
        QDateTime timeNow = QDateTime::currentDateTime();
        return m_timeStarted.secsTo(timeNow);
    }
    return settings()->get("lastTimePlayed").toLongLong();
}

void BaseInstance::resetTimePlayed()
{
    settings()->reset("totalTimePlayed");
    settings()->reset("lastTimePlayed");
}

QString BaseInstance::instanceType() const
{
    return m_settings->get("InstanceType").toString();
}

QString BaseInstance::instanceRoot() const
{
    return m_rootDir;
}

SettingsObjectPtr BaseInstance::settings() const
{
    return m_settings;
}

bool BaseInstance::canLaunch() const
{
    return (!hasVersionBroken() && !isRunning());
}

bool BaseInstance::reloadSettings()
{
    return m_settings->reload();
}

qint64 BaseInstance::lastLaunch() const
{
    return m_settings->get("lastLaunchTime").value<qint64>();
}

void BaseInstance::setLastLaunch(qint64 val)
{
    //FIXME: if no change, do not set. setting involves saving a file.
    m_settings->set("lastLaunchTime", val);
    emit propertiesChanged(this);
}

void BaseInstance::setNotes(QString val)
{
    //FIXME: if no change, do not set. setting involves saving a file.
    m_settings->set("notes", val);
}

QString BaseInstance::notes() const
{
    return m_settings->get("notes").toString();
}

void BaseInstance::setIconKey(QString val)
{
    //FIXME: if no change, do not set. setting involves saving a file.
    m_settings->set("iconKey", val);
    emit propertiesChanged(this);
}

QString BaseInstance::iconKey() const
{
    return m_settings->get("iconKey").toString();
}

void BaseInstance::setName(QString val)
{
    //FIXME: if no change, do not set. setting involves saving a file.
    m_settings->set("name", val);
    emit propertiesChanged(this);
}

QString BaseInstance::name() const
{
    return m_settings->get("name").toString();
}

QString BaseInstance::windowTitle() const
{
    return BuildConfig.LAUNCHER_NAME + ": " + name().replace(QRegExp("[ \n\r\t]+"), " ");
}

// FIXME: why is this here? move it to MinecraftInstance!!!
QStringList BaseInstance::extraArguments() const
{
    return Commandline::splitArgs(settings()->get("JvmArgs").toString());
}

shared_qobject_ptr<LaunchTask> BaseInstance::getLaunchTask()
{
    return m_launchProcess;
}