// Name : Matthew Reeves 
// This program accepts menu choices as an array then 
// displays the menu to the screen and takes user inputs 

package MenuPkg;
import java.util.Scanner;
import java.util.InputMismatchException;

//this creates the class that displays the menu options, then 
//reads and validates the user's entries for menu selection

public class Menu 
{
	private String options[];

	//gets the string array containing menu options from a test file
	//sets the values in that array to a new array that can be manipulated
	//in the menu class

	public Menu(String opts[])
	{
		options=new String[opts.length];
		
		for (int count=0;count<options.length;count++)
		{
			options[count]=opts[count];
		}
	}	

	//this is the method that actually displays the menu, then reads/validates input
	
	public int runMenu()	
	{
		Scanner input=new Scanner(System.in);

		int choice=0;		
		boolean continueLoop=true;		
	
		do
		{
			try
			{
				for (int count=1;count<options.length;count++)
				{
					System.out.printf("\t%d\t%s\n",count,options[count]);
				}
				System.out.printf("\t0\t%s\n", options[0]);
		
				System.out.print("\n\tPlease enter your selection: ");
				choice=input.nextInt();
				System.out.println();

				if (choice<0 || choice>=options.length)
				{
					System.out.println("I'm sorry, please enter appropriate numeral values only.\n");
					continue;
				} 	
				else 
				{
					continueLoop=false;
				}
			}
			catch (InputMismatchException inputMismatchException)
			{
				System.err.printf("\nException: %s\n",inputMismatchException);
				System.out.println("\nI'm sorry, please enter appropriate numeral values only.\n");
				input.nextLine();
			}
		}while (continueLoop);

		return choice;
	}
}