#include "usernamepasswordgenerator.h"
#include "ui_usernamepasswordgenerator.h"
#include <QClipboard>
#include <QFileDialog>
#include <QDebug>
#include <cstdlib>
#include <QTime>
#include "global.h"
#include <QMessageBox>

const int sliderDefaultMax = 256;
const int sliderDefaultMin = 1;
const int sliderDefaultVal = 40;
const int sliderMax = 1024;

bool lowercase = false;
bool uppercase = false;
bool decimalNumbers = false;
bool nonAlphaNumerical = false;
bool ascii32To255 = false;

UsernamePasswordGenerator::UsernamePasswordGenerator(QWidget *parent) : QDialog(parent), ui(new Ui::UsernamePasswordGenerator)
{
    ui->setupUi(this);
    ui->horizontalSlider_2->setMaximum(sliderDefaultMax);
    ui->horizontalSlider_2->setMinimum(sliderDefaultMin);
    ui->horizontalSlider_2->setValue(sliderDefaultVal);
    ui->spinBox_5->setMaximum(sliderMax);
    ui->spinBox_5->setMinimum(sliderDefaultMin);
    ui->spinBox_5->setValue(sliderDefaultVal);
    ui->spinBox_4->setMaximum(sliderMax);
    ui->spinBox_4->setValue(sliderDefaultMax);
    ui->spinBox_6->setMinimum(sliderDefaultMin);
    ui->spinBox_6->setMaximum(sliderMax);
    ui->spinBox_6->setValue(sliderDefaultMin);
    ui->checkBox_6->setChecked(true);
    ui->checkBox_7->setChecked(true);
    ui->checkBox_9->setChecked(true);
    ui->checkBox_10->setChecked(true);
    ui->lineEdit_2->setEchoMode(QLineEdit::Password);
    ui->pushButton_11->setText("Hide");
    emit on_pushButton_8_clicked();
    return;
}

UsernamePasswordGenerator::~UsernamePasswordGenerator()
{
    delete ui;
    return;
}

int UsernamePasswordGenerator::pullRandomNumber(int min1, int max1, int min2, int max2, int min3, int max3, int min4, int max4)
{
    int returnValue = 0;
    int usedRanges = 4;
    int usedRange = 0;

    if(min1 == -1 || max1 == -1)
    {
        usedRanges--;
        min1 = min2;
        max1 = max2;
        min2 = min3;
        max2 = max3;
        min3 = min4;
        max3 = max4;
    }
    if(min2 == -1 || max2 == -1)
    {
        usedRanges--;
        min2 = min3;
        max2 = max3;
        min3 = min4;
        max3 = max4;
    }
    if(min3 == -1 || max3 == -1)
    {
        usedRanges--;
        min3 = min4;
        max3 = max4;
    }
    if(min4 == -1 || max4 == -1)
    {
        usedRanges--;
    }

    if(usedRanges <= 0)
    {
        returnValue = -1;
    }
    else
    {
        usedRange = rand() % usedRanges;
        switch(usedRange)
        {
            case 0:
                returnValue = getRandom() % ((max1 + 1) - min1) + min1;
                break;
            case 1:
                returnValue = getRandom() % ((max2 + 1) - min2) + min2;
                break;
            case 2:
                returnValue = getRandom() % ((max3 + 1) - min3) + min3;
                break;
            case 3:
                returnValue = getRandom() % ((max4 + 1) - min4) + min4;
                break;
        }

    }
    return returnValue;
}

int UsernamePasswordGenerator::getRandom()
{
    return qrand();
}

void UsernamePasswordGenerator::setRandomSeed()
{
    QTime time = QTime::currentTime();
    qsrand((uint)time.msec());
    return;
}

void UsernamePasswordGenerator::on_pushButton_6_clicked()
{
    QClipboard *clipboard = QApplication::clipboard();
    clipboard->setText(ui->lineEdit_2->text());
    return;
}


void UsernamePasswordGenerator::on_pushButton_10_clicked()
{
    QClipboard *clipboard = QApplication::clipboard();
    clipboard->setText(ui->lineEdit_3->text());
    return;
}


void UsernamePasswordGenerator::on_pushButton_9_clicked()
{
    QString username = ui->lineEdit_3->text();
    QString password = ui->lineEdit_2->text();
    QString savePath = QFileDialog::getSaveFileName(this, tr("Save File"), "/home/Desktop/untitled.txt", tr("Textfile (*.txt)"));
    username = "Username: " + username + "\n";
    password = "Password: " + password + "\n";
    FILE *saveFile;
    saveFile = fopen(savePath.toStdString().c_str(), "w");
    fwrite(username.toStdString().c_str(), sizeof(char), username.length(), saveFile);
    fwrite(password.toStdString().c_str(), sizeof(char), password.length(), saveFile);
    fclose(saveFile);
    return;
}

void UsernamePasswordGenerator::on_pushButton_11_clicked()
{
    if(ui->pushButton_11->text() == "Hide")
    {
        ui->pushButton_11->setText("View");
        ui->lineEdit_3->setEchoMode(QLineEdit::Password);
    }
    else if (ui->pushButton_11->text() == "View")
    {
        ui->pushButton_11->setText("Hide");
        ui->lineEdit_3->setEchoMode(QLineEdit::Normal);
    }
    return;
}

void UsernamePasswordGenerator::on_pushButton_7_clicked()
{
    if(ui->pushButton_7->text() == "Hide")
    {
        ui->pushButton_7->setText("View");
        ui->lineEdit_2->setEchoMode(QLineEdit::Password);
    }
    else if (ui->pushButton_7->text() == "View")
    {
        ui->pushButton_7->setText("Hide");
        ui->lineEdit_2->setEchoMode(QLineEdit::Normal);
    }
    return;
}

void UsernamePasswordGenerator::on_pushButton_8_clicked()
{
    //re generate the username and password and set the text in lineedit 3 and 2 to the
    //generated numbers

    //do this by reading all the variables that changes the outcome of the username and password
    //and depening on them, generate the password and username.

    /*
        bool lowercase = false;
        bool uppercase = false;
        bool decimalNumbers = false;
        bool nonAlphaNumerical = false;
        bool ascii32To255 = false;
    */

    //do some character checking here and determine the allowed characters.

    int min1, max1;
    int min2, max2;
    int min3, max3;
    int min4, max4;

    if(ascii32To255)
    {
        //range = 32 - 255
        min1 = 32;
        max1 = 255;
        min2 = min3 = min4 = -1;
        max2 = max3 = max4 = -1;
        qDebug() << "0";
    }
    else
    {
        if(lowercase & uppercase & decimalNumbers & nonAlphaNumerical)
        {
            //define range for all
            //range = 32 - 126
            min1 = 32;
            max1 = 126;
            min2 = min3 = min4 = -1;
            max2 = max3 = max4 = -1;
            qDebug() << "1";
        }
        else if(lowercase & uppercase & decimalNumbers & !nonAlphaNumerical)
        {
            //define range for all but non alpha
            //range = 48 - 57, 65 - 90, 97 - 122
            min1 = 48;
            max1 = 57;
            min2 = 65;
            max2 = 90;
            min3 = 97;
            max3 = 122;
            min4 = -1;
            max4 = -1;
            qDebug() << "2";
        }
        else if(!lowercase & uppercase & decimalNumbers & nonAlphaNumerical)
        {
            //define range for all but lowercase
            //range = 48 - 57, 65 - 90, 32 - 126
            min1 = 48;
            max1 = 57;
            min2 = 65;
            max2 = 90;
            min3 = 32;
            max3 = 126;
            min4 = -1;
            max4 = -1;

            qDebug() << "3";
        }
        else if(lowercase & !uppercase & decimalNumbers & nonAlphaNumerical)
        {
            //define range for all but uppercase
            //range = 48 - 57, 97 - 122, 32 - 126
            min1 = 48;
            max1 = 57;
            min2 = 97;
            max2 = 122;
            min3 = 32;
            max3 = 126;
            min4 = -1;
            max4 = -1;

            qDebug() << "4";
        }
        else if(lowercase & uppercase & !decimalNumbers & nonAlphaNumerical)
        {
            //define range for all but decimalNumbers
            //range = 65 - 90, 97 - 122, 32 - 126

            min1 = 65;
            max1 = 90;
            min2 = 97;
            max2 = 122;
            min3 = 32;
            max3 = 126;
            min4 = -1;
            max4 = -1;

            qDebug() << "5";
        }
        else if(!lowercase & !uppercase & !decimalNumbers & nonAlphaNumerical)
        {
            //define range for only non alpha
            //range = 32 - 47, 58 - 64, 91 - 96, 123 - 126

            min1 = 32;
            max1 = 47;
            min2 = 58;
            max2 = 64;
            min3 = 91;
            max3 = 96;
            min4 = 123;
            max4 = 126;

            qDebug() << "6";
        }
        else if(lowercase & !uppercase & !decimalNumbers & !nonAlphaNumerical)
        {
            //define range for only lower
            //range = 97 - 122

            min1 = 97;
            max1 = 122;
            min2 = min3 = min4 = -1;
            max2 = max3 = max4 = -1;

            qDebug() << "7";
        }
        else if(!lowercase & uppercase & !decimalNumbers & !nonAlphaNumerical)
        {
            //define range for only uppercase
            //range = 65 - 90

            min1 = 65;
            max1 = 90;
            min2 = min3 = min4 = -1;
            max2 = max3 = max4 = -1;
            qDebug() << "8";
        }
        else if(!lowercase & !uppercase & decimalNumbers & !nonAlphaNumerical)
        {
            //define range for only decimal numbers
            //range = 48 - 57

            min1 = 48;
            max1 = 57;
            min2 = min3 = min4 = -1;
            max2 = max3 = max4 = -1;
            qDebug() << "9";
        }
        else if(lowercase & !uppercase & !decimalNumbers & nonAlphaNumerical)
        {
            //define range for non alpha and lower
            //range = 32 - 47, 58 - 64, 91 - 126

            min1 = 32;
            max1 = 47;
            min2 = 58;
            max2 = 64;
            min3 = 91;
            max3 = 126;
            min4 = -1;
            max4 = -1;
            qDebug() << "10";
        }
        else if(!lowercase & uppercase & !decimalNumbers & nonAlphaNumerical)
        {
            //define range for non alpha and uppercase
            //range = 32 - 47, 58 - 126
            min1 = 32;
            max1 = 47;
            min2 = 58;
            max2 = 126;
            min3 = min4 = -1;
            max3 = max4 = -1;
            qDebug() << "11";
        }
        else if(!lowercase & !uppercase & decimalNumbers & nonAlphaNumerical)
        {
            //define range for non alpha and decimal
            //range = 32 - 64, 92 - 96, 123 - 126
            min1 = 32;
            max1 = 64;
            min2 = 92;
            max2 = 96;
            min3 = 123;
            max3 = 126;
            min4 = -1;
            max4 = -1;
            qDebug() << "12";
        }
        else if(lowercase & uppercase & !decimalNumbers & !nonAlphaNumerical)
        {
            //define range for lower and uppercase
            //range = 65 - 90, 97 - 122
            min1 = 65;
            max1 = 90;
            min2 = 97;
            max2 = 122;
            min3 = min4 = -1;
            max3 = max4 = -1;
            qDebug() << "13";
        }
        else if(lowercase & !uppercase & decimalNumbers & !nonAlphaNumerical)
        {
            //define range for lower and decimal numbers
            //range = 48 - 57, 97 - 122
            min1 = 48;
            max1 = 57;
            min2 = 97;
            max2 = 122;
            min3 = min4 = -1;
            max3 = max4 = -1;
            qDebug() << "14";
        }
        else if(!lowercase & uppercase & decimalNumbers & !nonAlphaNumerical)
        {
            //define range fo ruppercase and decimal numbers
            //range = 65 - 90, 48 - 57
            min1 = 65;
            max1 = 90;

            min2 = 48;
            max2 = 57;

            min3 = min4 = -1;
            max3 = max4 = -1;
            qDebug() << "15";
        }

        else if(!lowercase & !uppercase & !decimalNumbers & !nonAlphaNumerical)
        {
            //define range for nothing
            min1 = min2 = min3 = min4 = -1;
            max1 = max2 = max3 = max4 = -1;
            qDebug() << "16";
        }
    }

    if(((min1 == -1) & (min2 == -1) & (min3 == -1) & (min4 == -1)) || ((max1 == -1)  & (max2 == -1)  & (max3 == -1)  & (max4 == -1)))
    {
        QMessageBox messageBox;
        messageBox.information(0,"Notification","None of the check boxes are filled! Retard...");
        messageBox.setFixedSize(500,200);
    }
    else
    {
        setRandomSeed();

        QString newUsername = "";
        QString newPassword = "";


        for(int i = 0; i < ui->horizontalSlider_2->value(); i++)
        {
            newUsername += (char)pullRandomNumber(min1, max1, min2, max2, min3, max3, min4, max4);
        }

        for(int i = 0; i < ui->horizontalSlider_2->value(); i++)
        {
            newPassword += (char)pullRandomNumber(min1, max1, min2, max2, min3, max3, min4, max4);
        }


        ui->lineEdit_3->setText(newUsername);
        ui->lineEdit_2->setText(newPassword);
    }
    return;
}

void UsernamePasswordGenerator::on_horizontalSlider_2_valueChanged(int value)
{
    ui->spinBox_5->setValue(value);
    return;
}

void UsernamePasswordGenerator::on_spinBox_5_valueChanged(int arg1)
{
    ui->horizontalSlider_2->setValue(arg1);
    return;
}

void UsernamePasswordGenerator::on_spinBox_4_valueChanged(int arg1)
{
    if(arg1 < ui->spinBox_6->value())
    {
        ui->spinBox_4->setValue(ui->spinBox_6->value());
    }
    ui->horizontalSlider_2->setMaximum(arg1);
    ui->spinBox_5->setMaximum(arg1);
    return;
}

void UsernamePasswordGenerator::on_spinBox_6_valueChanged(int arg1)
{
    if(arg1 > ui->spinBox_4->value())
    {
        ui->spinBox_4->setValue(ui->spinBox_6->value());
    }
    ui->horizontalSlider_2->setMinimum(arg1);
    ui->spinBox_5->setMinimum(arg1);
    return;
}

void UsernamePasswordGenerator::on_checkBox_6_stateChanged(int arg1)
{
    if(arg1)
    {
        uppercase = true;
    }
    else
    {
        uppercase = false;
    }
    return;
}

void UsernamePasswordGenerator::on_checkBox_10_stateChanged(int arg1)
{
    if(arg1)
    {
        lowercase = true;
    }
    else
    {
        lowercase = false;
    }
    return;
}

void UsernamePasswordGenerator::on_checkBox_7_stateChanged(int arg1)
{
    if(arg1)
    {
        decimalNumbers = true;
    }
    else
    {
        decimalNumbers = false;
    }
    return;
}

void UsernamePasswordGenerator::on_checkBox_9_stateChanged(int arg1)
{
    if(arg1)
    {
        nonAlphaNumerical = true;
    }
    else
    {
        nonAlphaNumerical = false;
    }
    return;
}

void UsernamePasswordGenerator::on_checkBox_8_stateChanged(int arg1)
{
    if(arg1)
    {
        ascii32To255 = true;
    }
    else
    {
        ascii32To255 = false;
    }
    return;
}