#include "loginwindow.h"
#include "ui_loginwindow.h"
#include "definitions.cpp"
#include "mainwindow.h"



LoginWindow::LoginWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::LoginWindow)
{
    ui->setupUi(this);

    usersBase = QSqlDatabase::addDatabase("QSQLITE");
    usersBase.setDatabaseName("userDataBase.db");

    if(!usersBase.open())
         ui->dataLabel->setText("Failed to connect");
    else
       ui->dataLabel->setText("Connected to the data base");



}

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

void LoginWindow::on_pushButton_clicked()
{


    QString nick, password;
    nick = ui->loginLine->text();
    password = ui->passwordLine->text();

    if(!usersBase.isOpen())
    {
        qDebug()<<"Failed to open the database";
                  return;
    }

    QSqlQuery qry;

    if(qry.exec("select * from Users where Nick = '"+nick+"' and Password = '"+password+"'" ))
    {
        int count = 0;
        while(qry.next())
        {
            count++;
        }
        if(count == 1)
        {
          //  string nick_str = nick.toStdString();
            close();

            if((nick.toStdString()) == admin.nick)
            {
                 MainWindow mainWindow;
                user = &admin;
               mainWindow.show();
            }

            if((nick.toStdString()) == student.nick)
            {
                user = &student;
            }

            if((nick.toStdString()) == professor.nick)
            {
                user = &professor;
            }

            usersBase.close();

        }
        if(count < 1)
        {
             ui->errorLabel->setText("Wrong login or password");
        }
    }

}