Main

import java.util.InputMismatchException;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // TODO: your code here
        //call method loadFromFile
        BookManager manager = new BookManager();
        manager.loadFromFile();

        //show Menu & get user inputs
        Scanner scan = new Scanner(System.in);
        int choice = 1;
        while (choice != 0) {
            try {
                System.out.println("---------");
                System.out.println("1. list all books");
                System.out.println("2. add a new book");
                System.out.println("3. edit book");
                System.out.println("4. delete a book");
                System.out.println("5. search books by name");
                System.out.println("6. sort books descending by price");
                System.out.println("");
                System.out.println("0. save & exit");
                System.out.println("---------");
                System.out.print("Your option: ");
                choice = Integer.parseInt(scan.nextLine());
            } catch (InputMismatchException e) {
            } switch (choice) {
                case 1:
                    //printBooks
                    manager.printBooks(manager.getBooks());
                    break;

                case 2:
                    //add(Book book)
                    System.out.print("Enter book id: ");
                    int id = Integer.parseInt(scan.nextLine());
                    System.out.print("Enter book name: ");
                    String name = scan.nextLine();
                    System.out.print("Enter book price: ");
                    Double price = Double.parseDouble(scan.nextLine());
                    Book book = new Book(id, name, price);
                    manager.add(book);
                    break;

                case 3:
                    //Book getBookById
                    System.out.print("Enter book id: ");
                    id = Integer.parseInt(scan.nextLine());
                    if (manager.getBookById(id) != null) {
                        Book book3 = manager.getBookById(id);
                        System.out.print("Enter book name: ");
                        book3.name = scan.nextLine();
                        System.out.print("Enter book price: ");
                        book3.price = Double.parseDouble(scan.nextLine());
                        System.out.println("Updated successfully.");
                    }
                    break;

                case 4:
                    //remove(Book book)
                    System.out.print("Enter book id: ");
                    id = Integer.parseInt(scan.nextLine());
                    name = "";
                    price = 0.0;
                    Book book4 = new Book(id, name, price);
                    manager.remove(book4);
                    break;

                case 5:
                    //ArrayList<Book>
                    System.out.print("Enter keyword: ");
                    String keyword = scan.nextLine();
                    manager.printBooks(manager.searchByName(keyword));
                    break;

                case 6:
                    //sortDescByPrice
                    System.out.println("After sorting: ");
                    manager.sortDescByPrice ();
                    break;

                case 0:
                    System.out.println("Saving to file...");
                    System.out.println("Bye!");
                    break;
                default:
                    System.out.println("Invalid option!");
                    break;
            }
        }
    }
}