/*
 * Purpose: Data Structure and Algorithms Lab 3 Problem 1 & 2
 * Status: Complete and thoroughly tested
 * Last update: 02/7/18
 * Submitted:  02/8/18
 * Comment: test suite and sample run attached
 * @author: Ardit Pranvoku
 * @version: 2018.02.7
 */
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Driver {

	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

	public static void main(String[] args) throws IOException {

		StackSLS<Order> bag = new StackSLS<Order>();
		StackSLS<Sample> sampleBag = new StackSLS<Sample>();
		String input = "";
		Integer index = 0;

		System.out.println("Please select a number.");
		System.out.println("0. Exit.");
		System.out.println("1. Pick up an order.");
		System.out.println("2. Drop off an order.");
		System.out.println("3. Display number of packages and weight of bag.");
		System.out.println("4. Display number of items and weight of the bag of samples.");
		System.out.println("5. Enjoy an item from the bag of samples.");
		System.out.println("6. Empty the bag of samples.");

		while (!(input.equals("0"))) {
			System.out.println("Make menu selection now:");
			input = br.readLine().trim();
			System.out.println(input);

			int option = 128;
			try {
				option = Integer.parseInt(input);
			} catch (NumberFormatException i) {
				System.out.println("Invalid input");
			}

			switch (option) {
			case 1:
				System.out.println("Please specify package info.");
				System.out.println("Please enter the item name.");
				String name = br.readLine();
				System.out.println(name);
				System.out.println("Please enter the order individual weight.");
				float weight = Float.parseFloat(br.readLine());
				System.out.println(weight);
				System.out.println("Please enter the total number of items.");
				int itemsInOrder = Integer.parseInt(br.readLine());
				System.out.println(itemsInOrder);
				System.out.println("Please enter the sender's name.");
				String sender = br.readLine();
				System.out.println(sender);
				System.out.println("Please enter the recipient's name.");
				String recipient = br.readLine();
				System.out.println(recipient);
				try {
					Order newOrder = new Order(name, weight, itemsInOrder, sender, recipient);
					bag.push(newOrder);
					System.out.println("A package of " + newOrder.getName() + " each weighing " + newOrder.getWeight() + " lbs has been added to the bag.");
				} catch (StackException e) {
				}
				break;
			case 2:
				try {
					Order newOrder = bag.pop();
					System.out.println("Here is your package " + newOrder.getRecipient() + ".");
					System.out.println("May I please keep a sample?(Y/N)");
					String request = br.readLine();
					if(request.equals("Y"))
							{
								System.out.println("Thanks for letting me keep a " + newOrder.getName() + " !");
								System.out.println("Your order contains " + newOrder.getItemsInOrder() + " " + newOrder.getName() + " each weighing "
										+ newOrder.getWeight() + " from " + newOrder.getSender() + " to " + newOrder.getRecipient() + ".");
								sampleBag.push(new Sample(newOrder.getName(), newOrder.getWeight()));
							}
					else
					{
						System.out.println("Thanks anyway.");
						System.out.println("Your order contains " + newOrder.getItemsInOrder() + " " + newOrder.getName() + " each weighing "
								+ newOrder.getWeight() + " from " + newOrder.getSender() + " to " + newOrder.getRecipient() + ".");
						sampleBag.push(new Sample(newOrder.getName(), newOrder.getWeight()));
					}

				} catch (StackException e) {
					System.out.println("No deliveries to process.");
				}
				break;

			case 3:
				try {
					float totalWeight = 0;
					StackRA<Order> weightBag = new StackRA<Order>();
					weightBag = bag;
					int numItems = 0;
					while(!weightBag.isEmpty())
					{
						Order weightOrder = weightBag.pop();
						System.out.println("Hello.");
						totalWeight +=  (weightOrder.getWeight()* weightOrder.getItemsInOrder());
						numItems++;
					}
					System.out.println("Bag has " + numItems + " items and weighs " + totalWeight + " lbs.");
				}
				catch (StackException e) {
					System.out.println("Bag is empty.");
				}
				break;
			case 4:
				try {
					float totalWeight = 0;
					StackRA<Sample> weightBag = new StackRA<Sample>();
					weightBag = sampleBag;
					int numItems = 0;
					while(weightBag.pop() != null)
					{
						Sample weightOrder =  weightBag.pop();
						totalWeight +=  (weightOrder.getWeight());
						numItems++;
					}
					System.out.println("Sample bag has " + numItems + " items and weighs " + totalWeight + " lbs.");
				}
				catch (StackException e) {
					System.out.println("Bag is empty.");
				}
				break;
			case 5:
				try {
				Sample newSample = (sampleBag.pop());
				System.out.println("This " + newSample.getName() + " is amazing. And it's free!");

				}
				catch (StackException e) {
					System.out.println("No samples to enjoy!");
				}
				break;
			case 6:
				if(bag.isEmpty())
				{
					System.out.println("Bag is already empty.");
				}
				else{
				bag.popAll();
				System.out.println("Bag has been emptied.");
				}
				break;
			default:
				System.out.println("Not a valid menu selection.");
				break;
			}
		}
	}
}