manager.h

#ifndef MANAGER_H
#define MANAGER_H

#include <QMainWindow>
#include <QDebug>
#include <QProcess>
#include <QFileDialog>
#include <QMessageBox>
#include <QInputDialog>
#include <QLineEdit>

namespace Ui {
class Manager;
}

class Manager : public QMainWindow
{
    Q_OBJECT

public:
    explicit Manager(QWidget *parent = nullptr);
    ~Manager();
    // Initialize a few things
    void init();

    QString getUsername() const;
    void setUsername(const QString &value);

    QString getPassword() const;
    void setPassword(const QString &value);
    // COmpare username provided by Qt and the entered one
    bool compare_usernames();
    // Find out if password is the correct one!
    bool compare_passwords();
    // List / grep real human system users
    void cat_users();
    // List / grep all real system groups
    void cat_groups();
    // Exit the application function
    void exit_app();
    /*
     * Group Management related functions
     */
    QString getGroupname() const;
    void setGroupname(const QString &value);
    QString getNew_groupname() const;
    void setNew_groupname(const QString &value);
    QString getGid() const;
    void setGid(const QString &value);
    // Create a new group
    bool groupadd();
    // Rename an existing group
    bool groupmod();
    // Remove an existing group
    bool groupdel();
    // Check if a group exists
    bool group_exists();

    /*
     * User Management related functions
     */
    void create_enc_password();
    bool is_username_valid();
    bool adduser();
    bool deluser();
    bool user_exists();
    // set ownership and permissions for the new user's home directory
    // in order to be able to lg in there when login to the system
    bool set_chown();
    bool set_chmod();
    bool del_user_home();

    /*
     * Networking Section related functions
     */
    QString ifconfig();
    QString netstat();
    QString iptables();
    QString Table;

    QString getNew_username() const;
    void setNew_username(const QString &value);

    QString getNew_user_realname() const;
    void setNew_user_realname(const QString &value);

    QString getNew_user_group() const;
    void setNew_user_group(const QString &value);

    QString getNew_user_id() const;
    void setNew_user_id(const QString &value);

    QString getNew_user_shell() const;
    void setNew_user_shell(const QString &value);

    QString getNew_user_encr_password() const;
    void setNew_user_encr_password(const QString &value);

    QString getTable() const;

private slots:
    void on_show_password_checkBox_clicked(bool checked);

    void on_submit_button_clicked();

    void on_human_users_checkBox_clicked(bool checked);

    void on_human_groups_checkBox_clicked(bool checked);

    void on_clear_credentials_checkBox_clicked(bool checked);

    void on_clear_user_fields_checkBox_clicked(bool checked);

    void on_clear_group_fields_checkBox_clicked(bool checked);

    void on_exit_manager_checkBox_clicked(bool checked);

    void on_actionExit_Manager_triggered();

    void on_actionAbout_Author_triggered();

    void on_actionAbout_Manager_triggered();

    void on_confirm_group_stuff_checkBox_clicked(bool checked);

    void on_create_group_button_clicked();

    void on_remove_group_button_clicked();

    void on_rename_group_button_clicked();

    void on_show_new_user_password_checkBox_clicked(bool checked);

    void on_shells_checkBox_clicked(bool checked);

    void on_confirm_user_stuff_checkBox_clicked(bool checked);

    void on_create_new_user_button_clicked();

    void on_remove_user_button_clicked();

    void on_interfaces_checkBox_clicked(bool checked);

    void on_routing_table_checkBox_clicked(bool checked);

    void on_firewall_checkBox_clicked(bool checked);

private:
    Ui::Manager *ui;
    // username & password
    QString username;
    QString password;
    // A bool that is set to true only if username & password
    // provided by the user are the correct ones of course
    bool submit_validation = false;
    // Group Management related string variables
    QString groupname;
    QString new_groupname;
    QString gid;    // The GID (aka Group ID)
    // User Management related string variables
    QString new_username;
    QString new_user_realname;
    QString new_user_group;
    QString new_user_id;
    QString new_user_shell;
    QString new_user_encr_password;

};

#endif // MANAGER_H