BookManager.java

import java.util.ArrayList;

//Manager class for handling library books
public class BookManager {

    // A list to hold all the books in the library
    private ArrayList<LibraryBook> books;
    private int nextBookId;

    public BookManager() {
        this.books = new ArrayList<>();
        this.nextBookId = 1;
    }

    // Method to add a new book to the library
    public void addBook(String title, String author, String section) {
        LibraryBook newBook = new LibraryBook(nextBookId, title, author, section);
        books.add(newBook);
        nextBookId++; // Increment the ID for the next book
        System.out.println("Successfully added: " + newBook.getBookTitle());
    }

    // Method to show all books in the library
    public void showAllBooks() {
        System.out.println("\n--- Library Inventory ---");
        if (books.isEmpty()) {
            System.out.println("The library is currently empty.");
        } else {
            for (LibraryBook book : books) {
                System.out.println(book.toString());
            }
        }
        System.out.println("-------------------------\n");
    }

    private LibraryBook findBookByTitle(String title) {
        for (LibraryBook book : books) {
            if (book.getBookTitle().equalsIgnoreCase(title)) {
                return book;
            }
        }
        return null; // Return null if no book with that title is found
    }

    public void borrowBook(String title) {
        LibraryBook book = findBookByTitle(title);
        if (book != null) { // Check if the book exists
            if (!book.isBorrowed()) { // Check if it's available
                book.setBorrowed(true);
                System.out.println("You have successfully borrowed '" + book.getBookTitle() + "'.");
            } else {
                System.out.println("Sorry, '" + book.getBookTitle() + "' is already borrowed.");
            }
        } else {
            System.out.println("Sorry, no book with the title '" + title + "' was found.");
        }
    }

    public void returnBook(String title) {
        LibraryBook book = findBookByTitle(title);
        if (book != null) { // Check if the book exists
            if (book.isBorrowed()) { // Check if it was actually borrowed
                book.setBorrowed(false);
                System.out.println("Thank you for returning '" + book.getBookTitle() + "'.");
            } else {
                System.out.println("Error: This book was not borrowed.");
            }
        } else {
            System.out.println("Sorry, no book with the title '" + title + "' was found.");
        }
    }
}