online book reader(oop).cpp

#include <iostream>
#include <string>
#include <vector>
#include <ctime>
#include <fstream>
#include <iomanip>
#include <map>
#include <algorithm> 

using namespace std;

class Book
{
public:
    string ISBN, title, author_name;
    int pages;
    vector<Book>bo;
    Book() {}

    Book(string ISBN, string title, string author_name, int pages) : ISBN(ISBN), title(title), author_name(author_name), pages(pages) {}

    void addBook()
    {
        cout << "Enter ISBN : ";
        cin >> ISBN;
        cout << "Enter title : ";
        cin.ignore();
        getline(cin, title);
        cout << "Enter author name : ";
        getline(cin, author_name);
        cout << "Enter how many pages : ";
        cin >> pages;

        ofstream file("databaseforbooks.txt", ios::app);
        file << ISBN << " " << title << " " << author_name << " " << pages << '\n';
        file.close();
        cout << "Book added successfully!" << endl;
    }
    void remove_book() 
    {
        string ISBN_to_remove;
        cout << "Enter the ISBN of the book you want to remove: ";
        cin >> ISBN_to_remove;

        
        vector<Book> books;
        ifstream file("databaseforbooks.txt");
        string ISBN, title, author_name;
        int pages;

        while (file >> ISBN >> ws) 
        {
            getline(file, title, ' ');
            getline(file, author_name, ' ');
            file >> pages;
            books.emplace_back(ISBN, title, author_name, pages);
        }
        file.close();

       
        auto it = remove_if(books.begin(), books.end(), [&](const Book& book)  {  return book.ISBN == ISBN_to_remove; });

        if (it != books.end())
        {
            books.erase(it, books.end());
            cout << "Book removed successfully.\n";
        }
        else
        {
            cout << "Book not found.\n";
            return;
        }

        //the updated info
        ofstream outfile("databaseforbooks.txt");
        for (const auto& book : books)
        {
            outfile << book.ISBN << " " << book.title << " " << book.author_name << " " << book.pages << '\n';
        }
        outfile.close();
    }

    
};

class User
{
public:
    string name, password, email, username;
    int c_page = 1;
    vector<string> reading;
    vector<User> users;

    User() {}

   User(string name, string password, string email, string username)
        : name(name), password(password), email(email), username(username) {}
    


    void SignUp()
    {
        cout << "Enter your username (no spaces): ";
        cin >> username;
        cout << "Enter Your password (no spaces): ";
        cin >> password;
        cout << "Enter Your name: ";
        cin.ignore();
        getline(cin, name);
        cout << "Enter Your email: ";
        cin >> email;
        users.push_back(User(username, password, name, email));
        ofstream reg("database.txt", ios::app);
        reg << username << " " << password << " " << name << " " << email << endl;
        reg.close();
        cout << "Hello " << name << " | User view\n";
    }

    
    void LogIn()
    {
        string u, p, n, e;
        bool found = false;
        cout << "Enter Your Username: ";
        cin >> username;
        cout << "Enter Your Password: ";
        cin >> password;

        ifstream lg("database.txt");
        while (lg >> u >> p >> n >> e)
        {
            if (u == username && p== password)
            {
                cout << "Hello " << username << " | User view" << endl;
                name = n;
                email = e;
                password = p;
               
                found = true;
                break;
            }
        }
        
        lg.close();
        if (!found)
        {
            cout << "Invalid login details, please try again.\n";
            LogIn();
        }
    }

    void ViewProfile()
    {        
          cout << "User Name :" << username << '\n';
          cout << "Name :" << name << '\n';
          cout << "password: " << password<< '\n';
          cout << "Email : " << email << '\n';            
    }

    void TimeDate()
    {
        time_t now = time(0);
        tm local_time;
        localtime_s(&local_time, &now);
        int hour_12 = local_time.tm_hour % 12;
        if (hour_12 == 0)
        {
            hour_12 = 12;
        }
        string am_pm = (local_time.tm_hour >= 12) ? "PM" : "AM";
        cout << (local_time.tm_year + 1900) << '-'
            << setw(2) << setfill('0') << (local_time.tm_mon + 1) << '-'
            << setw(2) << setfill('0') << local_time.tm_mday << " "
            << setw(2) << setfill('0') << hour_12 << ':'
            << setw(2) << setfill('0') << local_time.tm_min << ':'
            << setw(2) << setfill('0') << local_time.tm_sec << " " << am_pm << endl;
    }

    map<string, int> reading_history;
    void SelectChooseFromAvailable()
    {
        ifstream file("databaseforbooks.txt");
        vector<Book> books;

        string ISBN, title, author_name;
        int pages;
        while (file >> ISBN >> ws)//for what ws
        {
            getline(file, title, ' ');
            getline(file, author_name, ' ');
            file >> pages;
            books.emplace_back(ISBN, title, author_name, pages);//what is emplace back
        }
        file.close();

        if (books.empty())
        {
            cout << "The system has no books, sorry try later.\n";
            return;
        }

        cout << "The books in our system:\n";
        for (size_t i = 0; i < books.size(); ++i)
        {
            cout << "[" << i + 1 << "] " << books[i].title << " ISBN : " << books[i].ISBN << " Author : "<<books[i].author_name<<'\n';
        }

        int number_book;
        cout << "Which book to read? (enter the number corresponding to the book): ";
        cin >> number_book;
        reading_history[books[number_book - 1].title] = 1;
     
        

        if (number_book < 1 || number_book > books.size())
        {
            cout << "Invalid choice, try again.\n";
            return;
        }

        cout << "Now, you are reading: ( " << books[number_book - 1].title<<" )" << endl;
        
        c_page = 1;

        cout << "Current Page [1/" << books[number_book - 1].pages << "]\n";

        while (true)
        {
            cout << "Menu:\n";
            cout << setw(5) << "[1] Next page\n";
            cout << setw(5) << "[2] Previous page\n";
            cout << setw(5) << "[3] Stop reading\n";
            cout << setw(5) << "Choose [1-3]: ";
            int cho;
            cin >> cho;

            if (cho == 1 && c_page < books[number_book - 1].pages)
            {
                c_page++;
                reading_history[books[number_book - 1].title] = c_page;
                cout << "Page: " << c_page << '\n';
            }
            else if (cho == 2 && c_page > 1)
            {
                c_page--;
                reading_history[books[number_book - 1].title] = c_page;
                cout << "Page: " << c_page << '\n';
            }
            else if (cho == 3)
            {
                return;
            }
            else
            {
                cout << "Invalid choice\n";
            }
        }
    }
    
    void SelectChooseFromHistory()
    {
       
        if (reading_history.empty())
        {
            cout << "You have no reading history.\n";
            return;
        }
        for (const auto& entry : reading_history)
        {
            cout << "Book: " << entry.first << endl;
            cout << "The page you stopped at [" << entry.second << "]\n";
            TimeDate();
            cout << "---------------------------------------\n";
        }
        
    }

    void Menu(User &user)
    {
        cout << "Menu User\n";
        cout << setw(5) << "[1] View profile\n";
        cout << setw(5) << "[2] List & select from available books\n";
        cout << setw(5) << "[3] List & select from history\n";
        cout << setw(5) << "[4] Log out\n";

        int choice_menu_user;
        cin >> choice_menu_user;
        if (choice_menu_user == 1)
        {
            user.ViewProfile();
            
        }
        else if (choice_menu_user == 2)
        {
            user.SelectChooseFromAvailable();
        }
        else if (choice_menu_user == 3)
        {
            user.SelectChooseFromHistory();
        }
        else if (choice_menu_user == 4)
        {
            return;
        }
        else
        {
            cout << "Invalid choice, try again\n";
        }
    }
};

class Admin
{
public:
    string name_ad, pass;

    void Profile()
    {
        cout << "Admin name: " << name_ad << '\n';
        cout << "Admin password: " << pass << '\n';
    }

    void LogIn()
    {
        cout << "Enter your name: ";
        cin >> name_ad;
        cout << "Enter your password: ";
        cin >> pass;
    }

    void AddBook()
    {
        Book b;
        b.addBook();
    }
    void remove_book()
    {
        Book c;
        c.remove_book();
    }
    
};
class System:public Admin,public User
{
public:
    void system()
    {
        User user;
        Admin admin;
        int choice;
        bool logged_in = false;

        while (true)
        {
            cout << "----------------------------------------\n";
            cout << "You are :\n";
             cout <<setw(5)<< "[1] Admin\n";
            cout << setw(5)<< "[2] User\n";
            cout << setw(5)<< "[3] Log out\n";
            cout << "----------------------------------------\n";
            int choice = 0;cin >> choice;
            if (choice == 1)
            {
                admin.LogIn();
                cout << "Hello ! Manar Elhabbal " << "| Admin view\n";
                cout << "----------------------------------------\n";
                cout << setw(5)<<"[1] View my profile\n";
                cout << setw(5)<<"[2] Add a new book\n";
                cout << setw(5)<<"[3] Remove a book\n";
                cout << "----------------------------------------\n";
                int choose = 0;cin >> choose;
                if (choose == 1)
                {
                    admin.Profile();
                }
                else if (choose == 2)
                {
                    admin.AddBook();
                }
                else if (choose == 3)
                {
                    admin.remove_book();
                }
                else
                {
                    cout << "Invalid choice, try again\n";
                }
            }
            else if (choice == 2)
            {
                cout << "Main Menu:\n";
                cout << setw(5)<<"[1] Sign Up\n";
                cout << setw(5)<<"[2] Log In\n";
                cout << setw(5)<< "choose from[1-2] :";
                int ch = 0;cin >> ch;
                if (ch == 1)
                {
                    user.SignUp();
                    Menu(user);
                }
                else if (ch == 2)
                {
                    user.LogIn();
                    logged_in = true;
                    Menu(user);
                }
                else if (ch == 3)
                {
                    exit(0);
                }
                else
                {
                    cout << "invalid choice ,try again\n";
                }
            }


            if (logged_in)
            {
                user.Menu(user);
            }
        }
    }
};

int main()
{
    System s;
    s.system();
  
    return 0;
}