#include "versioncheck.h"
#include "SNCDataBase.h"
#include "loghelper.h"

VersionCheck::VersionCheck()
{
    this->local_app_version = SNCDataBase::getAppVersion();
    this->appconfig_url  = SNCDataBase::getAppConfigUrl();
    stop = false;
    manager = 0;
}
VersionCheck::~VersionCheck()
{
    qDebug()<<QDateTime::currentDateTime().toString("yyyy-MM-dd HH:mm:ss")\
           <<"VersionCheck Destroyed.";
    if(manager)
        delete manager;

}
bool VersionCheck::needUpdate()
{
    if(!getServerConfig())
        return false;
    qDebug()<<QDateTime::currentDateTime().toString("yyyy-MM-dd HH:mm:ss")\
           <<"app xml fetched";
    QString minver = parser.minVer;
    QString maxver = parser.maxVer;
    QString curver = this->local_app_version;
    QRegExp exp("\\d+\.\\d+\.\\d+");
    qDebug()<<minver<<maxver<<curver;
    if(!exp.exactMatch(minver)||!exp.exactMatch((maxver))||!exp.exactMatch(curver))
    {
        return false;
    }
    if(compare(curver,maxver))
    {
        if(compare(curver,minver))
        {
            this->force = true;
        }
        else
        {
            this->force = false;
        }
        return true;
    }
    return false;
}

bool VersionCheck::isForce()
{
    return this->force;
}

bool VersionCheck::getServerConfig()
{
    QString config_url = appconfig_url;
    qDebug()<<appconfig_url;
    QString content = downloadFile(config_url);
    qDebug()<<content;
    return parser.readConfig(content);

}
QString VersionCheck::downloadFile(QString http_url)
{

    QUrl url(http_url);
    QNetworkAccessManager manager;
    QNetworkReply *reply = manager.get(QNetworkRequest(url));
    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("utf8"));
    QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
    QTimer::singleShot(10000, &loop, SLOT(quit()));
    loop.exec();
    QString content = reply->readAll();
    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("system"));
    QTextCodec::setCodecForTr(QTextCodec::codecForName("system"));
    if(reply)
        delete reply;
    return content;
}

bool VersionCheck::compare(QString ver1, QString ver2)
{
    QStringList list = ver1.split(".");
    int ver1Major = list.at(0).toInt();
    int ver1Middle = list.at(1).toInt();
    int ver1Last = list.at(2).toInt();
    list = ver2.split(".");
    int ver2Major = list.at(0).toInt();
    int ver2Middle = list.at(1).toInt();
    int ver2Last = list.at(2).toInt();
    qDebug()<<ver1Major<<ver1Middle<<ver1Last;
    qDebug()<<ver2Major<<ver2Middle<<ver2Last;
    if(ver1Major<ver2Major)
    {
        return true;
    }
    else if(ver1Major==ver2Major)
    {
        if(ver1Middle<ver2Middle)
        {
            return true;
        }
        else if(ver1Middle==ver2Middle)
        {
            if(ver1Last<ver2Last)
            {
                return true;
            }
        }
    }
    return false;
}