#include "Env.h"
#include "net/HttpMetaCache.h"
#include "BaseVersion.h"
#include "BaseVersionList.h"
#include <QDir>
#include <QCoreApplication>
#include <QNetworkProxy>
#include <QNetworkAccessManager>
#include <QDebug>
#include "tasks/Task.h"
#include "meta/Index.h"
#include "FileSystem.h"
#include <QDebug>


struct Env::Private
{
    QNetworkAccessManager m_qnam;
    shared_qobject_ptr<HttpMetaCache> m_metacache;
    std::shared_ptr<IIconList> m_iconlist;
    shared_qobject_ptr<Meta::Index> m_metadataIndex;
    QString m_jarsPath;
    QSet<QString> m_features;
};

static Env * instance;

/*
 * The *NEW* global rat nest of an object. Handle with care.
 */

Env::Env()
{
    d = new Private();
}

Env::~Env()
{
    delete d;
}

Env* Env::Env::getInstance()
{
    if(!instance)
    {
        instance = new Env();
    }
    return instance;
}

void Env::dispose()
{
    delete instance;
    instance = nullptr;
}

shared_qobject_ptr< HttpMetaCache > Env::metacache()
{
    return d->m_metacache;
}

QNetworkAccessManager& Env::network() const
{
    return d->m_qnam;
}

std::shared_ptr<IIconList> Env::icons()
{
    return d->m_iconlist;
}

void Env::registerIconList(std::shared_ptr<IIconList> iconlist)
{
    d->m_iconlist = iconlist;
}

shared_qobject_ptr<Meta::Index> Env::metadataIndex()
{
    if (!d->m_metadataIndex)
    {
        d->m_metadataIndex.reset(new Meta::Index());
    }
    return d->m_metadataIndex;
}


void Env::initHttpMetaCache()
{
    auto &m_metacache = d->m_metacache;
    m_metacache.reset(new HttpMetaCache("metacache"));
    m_metacache->addBase("asset_indexes", QDir("assets/indexes").absolutePath());
    m_metacache->addBase("asset_objects", QDir("assets/objects").absolutePath());
    m_metacache->addBase("versions", QDir("versions").absolutePath());
    m_metacache->addBase("libraries", QDir("libraries").absolutePath());
    m_metacache->addBase("minecraftforge", QDir("mods/minecraftforge").absolutePath());
    m_metacache->addBase("fmllibs", QDir("mods/minecraftforge/libs").absolutePath());
    m_metacache->addBase("liteloader", QDir("mods/liteloader").absolutePath());
    m_metacache->addBase("general", QDir("cache").absolutePath());
    m_metacache->addBase("ATLauncherPacks", QDir("cache/ATLauncherPacks").absolutePath());
    m_metacache->addBase("FTBPacks", QDir("cache/FTBPacks").absolutePath());
    m_metacache->addBase("ModpacksCHPacks", QDir("cache/ModpacksCHPacks").absolutePath());
    m_metacache->addBase("TechnicPacks", QDir("cache/TechnicPacks").absolutePath());
    m_metacache->addBase("FlamePacks", QDir("cache/FlamePacks").absolutePath());
    m_metacache->addBase("root", QDir::currentPath());
    m_metacache->addBase("translations", QDir("translations").absolutePath());
    m_metacache->addBase("icons", QDir("cache/icons").absolutePath());
    m_metacache->addBase("meta", QDir("meta").absolutePath());
    m_metacache->Load();
}

void Env::updateProxySettings(QString proxyTypeStr, QString addr, int port, QString user, QString password)
{
    // Set the application proxy settings.
    if (proxyTypeStr == "SOCKS5")
    {
        QNetworkProxy::setApplicationProxy(
            QNetworkProxy(QNetworkProxy::Socks5Proxy, addr, port, user, password));
    }
    else if (proxyTypeStr == "HTTP")
    {
        QNetworkProxy::setApplicationProxy(
            QNetworkProxy(QNetworkProxy::HttpProxy, addr, port, user, password));
    }
    else if (proxyTypeStr == "None")
    {
        // If we have no proxy set, set no proxy and return.
        QNetworkProxy::setApplicationProxy(QNetworkProxy(QNetworkProxy::NoProxy));
    }
    else
    {
        // If we have "Default" selected, set Qt to use the system proxy settings.
        QNetworkProxyFactory::setUseSystemConfiguration(true);
    }

    qDebug() << "Detecting proxy settings...";
    QNetworkProxy proxy = QNetworkProxy::applicationProxy();
    d->m_qnam.setProxy(proxy);
    QString proxyDesc;
    if (proxy.type() == QNetworkProxy::NoProxy)
    {
        qDebug() << "Using no proxy is an option!";
        return;
    }
    switch (proxy.type())
    {
    case QNetworkProxy::DefaultProxy:
        proxyDesc = "Default proxy: ";
        break;
    case QNetworkProxy::Socks5Proxy:
        proxyDesc = "Socks5 proxy: ";
        break;
    case QNetworkProxy::HttpProxy:
        proxyDesc = "HTTP proxy: ";
        break;
    case QNetworkProxy::HttpCachingProxy:
        proxyDesc = "HTTP caching: ";
        break;
    case QNetworkProxy::FtpCachingProxy:
        proxyDesc = "FTP caching: ";
        break;
    default:
        proxyDesc = "DERP proxy: ";
        break;
    }
    proxyDesc += QString("%1:%2")
                     .arg(proxy.hostName())
                     .arg(proxy.port());
    qDebug() << proxyDesc;
}

QString Env::getJarsPath()
{
    if(d->m_jarsPath.isEmpty())
    {
        return FS::PathCombine(QCoreApplication::applicationDirPath(), "jars");
    }
    return d->m_jarsPath;
}

void Env::setJarsPath(const QString& path)
{
    d->m_jarsPath = path;
}

void Env::enableFeature(const QString& featureName, bool state)
{
    if(state)
    {
        d->m_features.insert(featureName);
    }
    else
    {
        d->m_features.remove(featureName);
    }
}

bool Env::isFeatureEnabled(const QString& featureName) const
{
    return d->m_features.contains(featureName);
}

void Env::getEnabledFeatures(QSet<QString>& features) const
{
    features = d->m_features;
}

void Env::setEnabledFeatures(const QSet<QString>& features) const
{
    d->m_features = features;
}