// Name : Matthew Reeves 
// This is a menu-driven test program for UnsortedBookList class

//Menu driven test program for the UnsortedBookList class
import java.util.Scanner;
import java.util.InputMismatchException;

public class UnsortedBookListTest
{

	//main method for test class
	public static void main (String args[])	
	{
		boolean continueLoop=true;

		Scanner input=new Scanner(System.in);

		UnsortedBookList bookList=new UnsortedBookList();

		int size=0;
	
		//accepts, validates, and processes user input for list size
		do
		{
			try
			{
				System.out.print("\nEnter the list size (>0): ");
				size=input.nextInt();
				bookList=new UnsortedBookList(size);
			}
			catch (InputMismatchException inputMismatchException) 
			{
				System.err.printf("\nException: %s\n\n",inputMismatchException);
                		System.out.println("You must enter a valid integer value (>0) for the list size, please try again.");
				input.nextLine();	
				continue;
			}
			catch (Exception exception) 
			{
				System.err.printf ("\nException: %s\n", exception);
				System.out.println ("List size MUST be greater than 0");
				continue;
			}

			continueLoop=false;

		} while (continueLoop);

		System.out.println("\nThank you for using the UnsortedBookList Test Program!");
		
		int choice;		

		continueLoop=true;

		//calls appropriate methods based on user's input choice
		do
		{
		
			choice=menuOpt();

			switch (choice)
			{
				case 1:
					bookList.addItem(bookEntryPoint());

					System.out.println("\n\tThe book has been added to the list!");

					break;
				case 2:
					if (bookList.removeItem(bookEntryPoint())==true)
					{
						System.out.println("\n\tThis book has been removed from the list!");
					}
					else
					{
						System.out.println("\n\tUnable to remove, book not found in the list!");
					}

					break;	
				case 3:	
					if (bookList.findItem(bookEntryPoint())==true)
					{
						System.out.println("\n\tThis book is in the list!");
					}
					else
					{
						System.out.println("\n\tThis book IS NOT in the list!");
					}

					break;		
				case 4:	
					if (bookList.isEmpty()==true)
					{
						System.out.println("The list IS empty!");
					}
					else
					{
						System.out.println("The list IS NOT empty!");
					}

					break;	
				case 5:	
					System.out.printf("The current number of elements in the list = %d\n",bookList.lengthIs());
					break;
				case 6:
					if (bookList.lengthIs()<=0)
					{					
						System.out.println("The current list is:\n\n***List is Empty***");
					}
					else
					{
						System.out.printf("The current list is:\n\n%s",bookList.toString());
					}

					break;
				case 7:	
					bookList.clear();
					System.out.println("The list is now empty.");
	
					break;
				case 0:	
					continueLoop=false;	
					break;				
			}
		}while (continueLoop);
	}
	
	//generates the prompt for a user to enter a new book	
	private static Book bookEntryPoint()
	{
		
		Scanner input=new Scanner(System.in);
		
		//initializes local variables for method
		String titl;
		String auth;
		String publ;
		int pyear;
		String isbn;	

		Book bookEntry=new Book();
	
		boolean continueLoop=true;

		//validates input type for user input
		do
		{
			try
			{		

				//prompts for and stores attribute info from user
				System.out.print("\tEnter the book's title: ");
				titl=input.nextLine();	
			
				System.out.print("\tEnter the book's author: ");
				auth=input.nextLine();
		
				System.out.print("\tEnter the book's publisher: ");
				publ=input.nextLine();
		
				System.out.print("\tEnter the book's publication year: ");
				pyear=input.nextInt();
				input.nextLine();		
	
				System.out.print("\tEnter the book's ISBN number: ");
				isbn=input.nextLine();

				//creates Book object using user input
				bookEntry=new Book(titl,auth,publ,pyear,isbn);
			}
			catch (InputMismatchException inputMismatchException) 
			{
				System.err.printf("\nException: %s\n\n",inputMismatchException);
                		System.out.println("You must enter a valid integer value for the publication year, please try again.\n");
				input.nextLine();	
				continue;
			}

			continueLoop=false;

		} while (continueLoop);
		return bookEntry;
	}

	//prompts user for a menu choice and gives user available options
	private static int menuOpt()
	{
		boolean continueLoop=true;
		int choice=0;
		Scanner input=new Scanner(System.in);
	
		do
		{
			try
			{
				System.out.println("\nChoose from the following options: ");
				System.out.println("\t1\tAdd an item to the list ");
				System.out.println("\t2\tRemove an item from the list ");
				System.out.println("\t3\tFind an item in the list ");
				System.out.println("\t4\tDetermine if the list is empty ");
				System.out.println("\t5\tGet the length of the list ");
				System.out.println("\t6\tPrint the list ");
				System.out.println("\t7\tClear the list ");
				System.out.println("\t0\tQuit ");
				System.out.print("\tOption: ");

				choice=input.nextInt();
				
				System.out.println();

				if (choice<0||choice>7)
				{
					System.out.println("\nYou must enter an integer 1-7, or 0 to exit. Please try again.");
					continue;
				}
				else
				{	
					continueLoop=false;
				}
					
			}
			catch (InputMismatchException inputMismatchException)
			{
				System.err.printf("\nException: %s\n",inputMismatchException);
                		System.out.println("\nYou must enter an integer 1-7, or 0 to exit. Please try again.");
				input.nextLine();	
			}
			
		}while (continueLoop);
		return choice;
	}
}