settingsdialog.cpp

#include "settingsdialog.h"
#include "ui_settingsdialog.h"
#include <QDebug>
#include "globalvar.h"
#include "downloaderui.h"
#include "mainwindow.h"
#include <QWebView>
#include <QWebElement>
#include <QWebFrame>
#include <QUrl>
#include <QSettings>
#include <QDesktopServices>

SettingsDialog::SettingsDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::SettingsDialog)
{
    ui->setupUi(this);
    this->setWindowIcon(QPixmap(":/icons/OIVLE.png"));
    this->setWindowTitle("  Offline IVLE");
    this->setAttribute(Qt::WA_QuitOnClose,false);
    this->setWindowFlags((Qt::WindowFlags) (Qt::Window | Qt::WindowStaysOnTopHint | Qt::WindowTitleHint | Qt::CustomizeWindowHint | Qt::WindowCloseButtonHint  & (~Qt::WindowFullscreenButtonHint)) );
    webviewDialog = new QDialog(this);
    webviewDialog->setLayout(new QBoxLayout(QBoxLayout::LeftToRight));
    webviewDialog->setAttribute(Qt::WA_QuitOnClose,false);
    webView = new QWebView(webviewDialog);
    webviewDialog->layout()->addWidget(webView);
    webviewDialog->layout()->setMargin(0);
    connect(webView, SIGNAL(loadFinished(bool)), this, SLOT(onWebviewLoaded()));

    adialog = new AdvancedDialog(this);
    connect(adialog, &AdvancedDialog::configSaved, this, &SettingsDialog::configSaved);
}

SettingsDialog::~SettingsDialog()
{
    delete ui;
}

void SettingsDialog::onWebviewLoaded(){
    QUrl url = webView->url();
    if(url.host() == QString("ivle.nus.edu.sg")&&
            url.path() == QString("/api/login/login_result.ashx")&&
            QUrlQuery(url).queryItemValue("r") == QString("0")){
        //qDebug()<<"OK!";
        webviewDialog->close();
        emit gottenToken(webView->page()->mainFrame()->toPlainText());
    }
}

void SettingsDialog::on_pushButton_clicked()
{
    webView->setUrl(QString("https://ivle.nus.edu.sg/api/login/?apikey=%1").arg(APIKEY));
    //webviewDialog->setWindowModality(Qt::ApplicationModal);
    //setting modality cause the cursor to disappear in textbox...
    webviewDialog->show();
}

void SettingsDialog::setLabelText(const QString &t){
    ui->label->setText(t);
}

void SettingsDialog::setDlText(const QString &t){
    ui->label_2->setText(t);
}

void SettingsDialog::on_pushButton_2_clicked()
{
    QString path = QFileDialog::getExistingDirectory(this,"Choose a download destination");
    if(!path.isEmpty()){
        ui->label_2->setText(QString("Download to: %1").arg(path));
        ui->verticalLayout->update();
        emit updateDirectory(path);
    }
}

void SettingsDialog::setDisplayedSettings(QVariantMap m)
{
    ui->spinBox->setValue( (int)(m["maxFileSize"].toDouble() / 1024 / 1024) );
    ui->notifyCheckBox->setCheckState( m["notify"].toBool() ? Qt::Checked : Qt::Unchecked );
    ui->igUpCheckBox->setCheckState( m["ignoreUploadable"].toBool() ? Qt::Checked : Qt::Unchecked );
    ui->notifyAnmCheckBox->setCheckState( m["notifyAnm"].toBool() ? Qt::Checked : Qt::Unchecked );
    adialog->setConfigContent(m["jsonConfig"].toString());
}

bool SettingsDialog::event(QEvent *e)
{
    if(e->type() == QEvent::WindowActivate){
        this->setWindowFlags(this->windowFlags() & (~Qt::WindowStaysOnTopHint));
        this->show();
    }
    return QDialog::event(e);
}

void SettingsDialog::closeEvent(QCloseEvent *e){
    QVariantMap m;
    m["maxFileSize"] = ui->spinBox->value();
    m["ignoreUploadable"] = ui->igUpCheckBox->checkState() == Qt::Checked;
    m["notify"] = ui->notifyCheckBox->checkState() == Qt::Checked;
    m["notifyAnm"] = ui->notifyAnmCheckBox->checkState() == Qt::Checked;
    emit closedWithSettings(m);
    QDialog::closeEvent(e);
}

void SettingsDialog::on_pushButton_3_clicked()
{
    adialog->show();
}

//Offline IVLE button
void SettingsDialog::on_pushButton_4_clicked()
{
    if(checkCon()==0){

    QSettings* regSett;
    regSett = new QSettings("Organization-name","Project-name");
    if(regSett->value("KEY","failed").toString().length()==21)
    {
    DownloaderUI UI;
    this->close();
    UI.setModal(true);
    UI.exec();
    this->show();
    }
    else QMessageBox::warning(this,"Failed","APIKEY is invalid, do parse a correct APIKEY before using the downloader!");
    }
    //else QMessageBox::information(this,"No connection","You do not have a internet connection. This app needs to have an internect connection");

}
//Resets everything about the application!
void SettingsDialog::on_pushButton_5_clicked()
{
    webviewDialog2 = new QDialog(this);// an object that is shown in the UI, code below will set the settings of the Dialog box seen
    webviewDialog2->setLayout(new QBoxLayout(QBoxLayout::LeftToRight));
    webviewDialog2->setAttribute(Qt::WA_QuitOnClose,false);
    webView2 = new QWebView(webviewDialog2);
    webviewDialog2->layout()->addWidget(webView2);
    webviewDialog2->layout()->setMargin(0);
    webView2->setUrl(QString("https://ivle.nus.edu.sg/LAPI/default.aspx"));
    webviewDialog2->show();
    QSettings settings ("IVLE", "App");
    settings.beginGroup("userinfo");
    settings.setValue("tempUsername", "null");
    settings.setValue("tempPassword", "null");
    settings.endGroup();
    getAPIkey();
}
void SettingsDialog::getAPIkey()
{

    QUrl url("https://ivle.nus.edu.sg/LAPI/default.aspx");//url to obtain the APIKEY
    webView2->setUrl(url);
    //Signals and slot function that ensures that the webpage is loaded finish before executing the parse function
    connect(webView2, SIGNAL(loadFinished(bool)), SLOT(parse(bool)));
}

//Parsing function that uses QSettings,QWebView,QWebFrame and QWebElement to extract the APIKEY from parsing HTML code on the webpage that generates the APIKEY
void SettingsDialog::parse(bool){
    QWebFrame *frameInner = webView2->page()->mainFrame();
    QWebElement doc = frameInner->documentElement();
    QWebElement key = doc.findFirst("b");//function to find the first element in the HTML tag <b>
    APIKEY = key.toPlainText();
    //qDebug()<<APIKEY;
    QSettings* regSett;
    regSett = new QSettings("Organization-name","Project-name");
    regSett->setValue("KEY",APIKEY); //Store value of key defined by user

    //qDebug()<<regSett->value("KEY","does not exist");
}

void SettingsDialog::on_pushButton_6_clicked()
{
    QDesktopServices::openUrl(QUrl("https://github.com/Geraldcdx/IVLEDownloader/blob/master/docs/Userguide.md"));
}
int SettingsDialog::checkCon()
{
    //CODE TO CHECK INTERNET CONNECTION if not dont open
    QNetworkAccessManager nam;
    QNetworkRequest req(QUrl("http://www.google.com"));
    QNetworkReply *reply = nam.get(req);
    QEventLoop loop;
    connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
    loop.exec();
    if(reply->bytesAvailable())return 0;
    //QMessageBox::information(this, "Info", "You are connected to the internet :)");
    else{
        QMessageBox::critical(this, "Info","You are not connected to the internet! This app cannot be opened without an internet connection, if you want to view your files go to the directory you saved at. Please try again after you have a stable connection!");
        return 1;
    }
    //============ENDS HERE============================================
}