QuickNotesApp.java

import java.util.*;

public class QuickNotesApp {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        AuthenticationService authService = new AuthenticationService();
        NoteService noteService = new NoteService();

        System.out.println("=== Register ===");
        System.out.print("Enter username: ");
        String username = scanner.nextLine();

        System.out.print("Enter password: ");
        String password = scanner.nextLine();

        System.out.print("Enter email: ");
        String email = scanner.nextLine();

        User user = new User(1, username, password, email);
        boolean registered = authService.registerUser(user);
        if (!registered) {
            System.out.println("Registration failed. Exiting.");
           scanner.close();
            return;
        }

        System.out.println("\n=== Login ===");
        System.out.print("Username: ");
        String loginUser = scanner.nextLine();

        System.out.print("Password: ");
        String loginPass = scanner.nextLine();

        User loggedInUser = authService.loginUser(loginUser, loginPass);

        if (loggedInUser != null) {
            System.out.println("Login successful for " + loggedInUser.getUsername());

            System.out.print("Enter notebook name: ");
            String notebookName = scanner.nextLine();
            loggedInUser.createNotebook(notebookName);
            Notebook notebook = loggedInUser.getNotebooks().get(0);

            System.out.print("Enter note title: ");
            String title = scanner.nextLine();

            System.out.print("Enter note content: ");
            String content = scanner.nextLine();

            TextNote note = new TextNote(1, title, content);
            note.formatText();
            noteService.createNote(notebook, note);

            System.out.println("\n--- Notes in " + notebook.getName() + " ---");
            for (Note n : notebook.getNotes()) {
                n.displayContent();
            }
        } else {
            System.out.println("Login failed.");
        }
     scanner.close();
    }
}