// Name : Matthew Reeves 
// This is a program to test the methods in the linkedList class

import java.util.Scanner;
import ListPkg.LinkedList;
import MenuPkg.Menu;
import ExceptionPkg.EmptyListException;
import java.util.InputMismatchException;

public class LinkedListTest
{
	//main method, includes the codes to send menu options to 
	//Menu so menu can be displayed and inputs read/validated/accepted 

	public static void main( String args[] )
	{
		Scanner input=new Scanner(System.in);

		LinkedList linkedList=new LinkedList("testList");

		String menuOpts[]={"Quit","Add an item to list - from FRONT","Add an item to list - from BACK","Remove an item from list - from FRONT","Remove an item from list - from BACK","Find and remove an item in the list","Find an Item in the list","Check the length of the list","Check if list is empty","Print list","Clear list"};
	
		Menu displayMenu=new Menu(menuOpts);
		
		System.out.println("\nThank you for using the LinkedListTest Program!\n");

		int choice;
		boolean continueLoop=true;

		//calls appropriate methods based on user's input choice
		do
		{
			System.out.println("\tPlease choose from the following options\n");		
			choice=displayMenu.runMenu();
			int value;
			Integer wrappedValue;

			try
			{

				switch (choice)
				{
					case 1:
						System.out.print("Please enter the value to add: ");

						value=input.nextInt();	
						wrappedValue=value;
						linkedList.insertAtFront(wrappedValue);
	
						System.out.println("\nAdded to the list!");
						
						linkedList.Print();
						break;
					case 2:
						System.out.print("Please enter the value to add: ");

						value=input.nextInt();	
						wrappedValue=value;
						linkedList.insertAtBack(wrappedValue);

						System.out.println("\nAdded to the list!");
						
						linkedList.Print();
						break;	
					case 3:										
						if (linkedList.isEmpty())
						{
							System.out.println("List is empty - value NOT removed\n");
						}
						else
						{
							linkedList.removeFromFront();
							System.out.println("Value removed from the list!");
							linkedList.Print();
						}
	
						break;	
					case 4:
						if (linkedList.isEmpty())
						{
							System.out.println("List is empty - value NOT removed\n");
						}
						else
						{
							linkedList.removeFromBack();
							System.out.println("Value removed from the list!");
							linkedList.Print();
						}

						break;	
					case 5:
						System.out.print("Please enter the value to find and remove: ");
		
						value=input.nextInt();
						wrappedValue=value;
					
						if (linkedList.isEmpty())
						{
							System.out.println("\nList is empty - value NOT removed\n");
							break;
						}
	
						if (linkedList.findAndRemove(wrappedValue))
						{
							System.out.println("\nValue found in list - value has been removed");
						}
						else
						{
							System.out.println("\nValue NOT found in list - value NOT removed");
						}

						linkedList.Print();
						break;
					case 6:
						System.out.print("Please enter the value to search for: ");

						value=input.nextInt();
						wrappedValue=value;
	
						if (linkedList.findItem(wrappedValue))
						{
							System.out.println("\nValue found in the list!");
						}
						else 
						{											 	
							System.out.println("\nValue NOT found in the list!");
						}
						
						linkedList.Print();
						break;	
					case 7:
						System.out.printf("Number of elements currently in the list: %d\n\n",linkedList.lengthIs());
						break;
					case 8:
						if (linkedList.isEmpty())
						{
							System.out.println("The list is empty\n");
							break;
						}
						else
						{
							System.out.println("The list is NOT empty\n");
							break;
						}
					case 9:
						linkedList.Print();
						break;
					case 10:
						linkedList.Clear();
					
						System.out.println("The list has been cleared!\n");
				
						break;
					case 0:
						continueLoop=false;
						break;
				}

			}
			
			catch (InputMismatchException inputMismatchException) 
			{
				System.err.printf("\nException: %s\n",inputMismatchException);
                		System.out.println("\nYou must enter a valid integer value to add to the list, please try again.\n");
				input.nextLine();	
				continue;
			}



		}while(continueLoop);
	}
}