WUT_Computer_Science/EGUI/lab1/mainwindow.cpp

#include "mainwindow.h" // Notepad class header file that was generated by the wizard
#include "ui_mainwindow.h"// UI header file that was generated by the uic tool
#include "login.h"
#include "universalFunctions.h"
#include <QFileDialog>
#include <QMessageBox>
#include <iostream>
#include <QJsonObject>
#include <QJsonDocument>
#include <QTextStream>
#include <QJsonArray>

MainWindow::MainWindow(QWidget *parent) // class definition, constructor
    : QMainWindow(parent) // calls qmainwindow parent constructor we have,
    // base class for the MainWindow class:
    , ui(new Ui::MainWindow) // create ui class and assign to ui member
    // creates the UI class instance and assigns it to the ui member:
{
    ui->setupUi(this); // setup user interface
    defineConnections();
}

void MainWindow::defineConnections() const
{
    connect(ui -> loginButton, &QPushButton::clicked, this, &MainWindow::goToLogin);
    connect(ui -> pushButton, &QPushButton::clicked, this, &MainWindow::saveRegisteredUser);
    connect(ui -> actionExit, &QAction::triggered, this, &MainWindow::exit);
    connect(ui -> actionLogin, &QAction::triggered, this, &MainWindow::goToLogin);
}

void MainWindow::exit()
{
    QApplication::quit();
}

MainWindow::~MainWindow()
{
    delete ui; // in the destructor, we delete the ui
}

void MainWindow::saveRegisteredUser() const
{
    QJsonObject blogs = readJsonFile("blogs.json");
    QJsonObject users = readJsonFile("user.json");
    QString id = ui->inputId->text();
    if(id == "")
    {
        outputMessageBox("THIS ID IS EMPTY!");
        return;
    }
    if(users.find(id) == users.end())
    {
        QString mail = ui->inputMail->text();
        QString password = ui->inputPassword->text();
        qDebug() << mail << " " << password;
        QJsonObject user;
        user["userId"] = id;
        user["email"] = mail;
        user["password"]=password;
        users.insert(id, user);
        /*
        userId - unique user id - text obtained from the user during user registration
        email - e-mail address of the user
        password - password provided by the user
        */
        QJsonObject blog;
        QString blogTitle = ui -> inputBlogTitle->text();
        QString blogId = ui -> inputBlogID->text();
        if(blogs.find(blogId) == blogs.end())
        {
            blog["ownerId"] = id;
            blog["title"] = blogTitle;
            blog["blogId"] = blogId;
            QJsonArray items;
            blog["items"] = items;
            blogs.insert(blogId, blog);
            saveJsonFile(blogs, "blogs.json");
            saveJsonFile(users, "user.json");
        }else outputMessageBox("THIS BLOG ID IS ALREADY TAKEN!");
    }else outputMessageBox("THIS ID IS ALREADY TAKEN!");
}

void MainWindow::goToLogin()
{
    login *l = new login();
    l -> show();
    hide();
}

void MainWindow::test()
{
    qDebug() << "pls work";
}