#include "Secret.h"

Secret::Secret():
    secretkey(NULL)
{
    this->secretkey=new char[36];
    this->secretkey[0]=0x2b;
    this->secretkey[1]=0xef;
    this->secretkey[2]=0x33;
    this->secretkey[3]=0xaf;
    this->secretkey[4]=0x2b;
    this->secretkey[5]=0x4c;
    this->secretkey[6]=0x91;
    this->secretkey[7]=0xb6;
    this->secretkey[8]=0xac;
    this->secretkey[9]=0xe5;
    this->secretkey[10]=0xca;
    this->secretkey[11]=0x21;
    this->secretkey[12]=0xc4;
    this->secretkey[13]=0xb5;
    this->secretkey[14]=0xbe;
    this->secretkey[15]=0x5d;
    this->secretkey[16]=0x7c;
    this->secretkey[17]=0x3c;
    this->secretkey[18]=0xc3;
    this->secretkey[19]=0x16;
    this->secretkey[20]=0x29;
    this->secretkey[21]=0x7b;
    this->secretkey[22]=0x8a;
    this->secretkey[23]=0x99;
    this->secretkey[24]=0x3e;
    this->secretkey[25]=0x90;
    this->secretkey[26]=0xce;
    this->secretkey[27]=0x37;
    this->secretkey[28]=0xf8;
    this->secretkey[29]=0x8f;
    this->secretkey[30]=0xec;
    this->secretkey[31]=0x84;
    this->secretkey[32]=0xcf;
    this->secretkey[33]=0xf1;
    this->secretkey[34]=0x74;
    this->secretkey[35]=0x26;

}

Secret::~Secret()
{
    if(NULL!=this->secretkey)
    {
        delete[] this->secretkey;
    }
}


QByteArray Secret::getEncodeString(const QString& str)
{
    QByteArray data(str.toUtf8());
    QDate currentDate=QDate::currentDate();
    int day;
    day=currentDate.day()%16+1;
    QByteArray newData;
    int keyInd=0;
    //newData.reserve(data.size()+data.size()/day+10);
    for(int i=0;i<data.size();i++)
    {
        newData.push_back( (data.at(i)^(this->secretkey[keyInd%36]) )+500);
        keyInd++;
        //qDebug()<<this->secretkey[keyInd%1]<<"\n";
        //newData.push_back( (data.at(i))+00);

        if(i%day==0)
        {
            QTime t;
            t= QTime::currentTime();
            for(int k=0;k<3;k++)
            {
                qsrand(t.msec()+t.second()*1000);
                int n = qrand();
                QByteArray md5=QCryptographicHash::hash(QString("%1").arg(n).toLatin1(), QCryptographicHash::Md5);
                newData.push_back(md5[0]);
                newData.push_back(md5[1]);
                newData.push_back(md5[2]);
                newData.push_back(md5[3]);
                newData.push_back(md5[4]);
                newData.push_back(md5[5]);
                qsrand(t.msec()+t.second()*1000+n);
                md5=QCryptographicHash::hash(QString("%1").arg(n).toLatin1(), QCryptographicHash::Md5);
                newData.push_back(md5[6]);
                newData.push_back(md5[7]);
                newData.push_back(md5[8]);
                newData.push_back(md5[9]);
                newData.push_back(md5[10]);
                newData.push_back(md5[11]);
                md5=QCryptographicHash::hash(QString("%1").arg(n).toLatin1(), QCryptographicHash::Md5);
                newData.push_back(md5[12]);
                newData.push_back(md5[0]);
                newData.push_back(md5[2]);
                newData.push_back(md5[4]);
                newData.push_back(md5[6]);
                newData.push_back(md5[8]);
            }
        }
    }
    return newData.toHex();
}

QString Secret::getDecodeString(const QByteArray& code)
{
    QByteArray data=QByteArray::fromHex(code);
    QByteArray newData;
    QDate currentDate=QDate::currentDate();
    int day;
    day=currentDate.day()%16+1;
    int keyInd=0;
    for(int i=0;i<data.size();i++)
    {
        if(i<data.size())
        {
            newData.push_back( (data.at(i)-500)^(this->secretkey[keyInd%36]));
            keyInd++;

        }
        if(i%day==0)
        {
            i+=54;
            continue;
        }

    }
    //return data;
    return QString(newData);

}