import java.util.Scanner;

/**
 * This class implements a virtual bookcase where users can store and 
 * retrieve books.
 * 
 * Illustrates:
 * - The use of private static methods
 * - The use of a switch statement
 * - The use of a do-while loop
 * 
 * @author alchambers
 * @version sp16
 */
public class BookController{

    /**
     * Prints a menu of the options and returns the user's choice
     * @param scan A Scanner that allows for reading from the keyboard
     * @return An integer representing the user's choice
     */
    private static int printMenuAndGetChoice(Scanner scan){
        System.out.println();
        System.out.println();        
        System.out.println("=== Bookcase ===");
        System.out.println("1. Add a book");
        System.out.println("2. Search for a book");
        System.out.println("3. Get a random book");        
        System.out.println("4. List books");
        System.out.println("5. Quit");
        System.out.print("Choose an option (1-5): ");
        
        int choice =  scan.nextInt();
        scan.nextLine(); // scans the newline
        System.out.println();
        
        return choice;
    }

    /**
     * Allows the user to add a book to the bookcase
     * @param scan A Scanner that allows for reading from the keyboard
     * @param list The book case
     */
    private static void optionOne(Scanner scan, BookCase list){
        System.out.print("Enter the title of the book: ");
        String title = scan.nextLine();
        list.addBook(title);
    }

    /**
     * Allows the user to determine whether a book is in the bookcase 
     * @param scan A Scanner that allows for reading from the keyboard
     * @param list The book case
     */        
    private static void optionTwo(Scanner scan, BookCase list){
        System.out.print("Enter the title of the book: ");
        String title = scan.nextLine();
        boolean isPresent = list.containsBook(title);

        if(isPresent){
            System.out.println("The book is in the bookcase");
        }
        else{
            System.out.println("The book isn't in the bookcase");   
        }

        System.out.println();
        System.out.println();
    }

    /**
     * Recommends a random book to the user
     * @param list The book case
     */
    private static void optionThree(BookCase list){
        String title = list.getRandomBook();
        System.out.println("How about reading " + title);
    }

    /**
     * Prints the contents of the book case
     * @param list The book case
     */    
    private static void optionFour(BookCase list){
        System.out.println(list);
    }

    /**
     * Controls the application
     */
    public static void main(String[] args){
        int choice = 0;        
        final int QUIT = 5;
        
        BookCase list = new BookCase();
        Scanner scan = new Scanner(System.in);

        // Loop until the user quits
        do{            

            // Get the user's selection
            choice = printMenuAndGetChoice(scan);

            // Call the appropriate methods
            switch(choice){
                case 1: 
                    optionOne(scan, list);
                    break;
                case 2:
                    optionTwo(scan, list);
                    break;
                case 3:
                    optionThree(list);
                    break;
                case 4:
                    optionFour(list);
                    break;
                default:
                    break;
            }            
        }while(choice != QUIT);

        System.out.println("Goodbye!");
    }    
}