school/old/java1/Week-11-final-start/part-2/ShoppingCartManager.java

import java.util.Scanner;

public class ShoppingCartManager {
	public static void main(String[] args) {
		Scanner scnr = new Scanner(System.in);
		String custName;
		String curDate;

		System.out.println("Enter Customer's Name:");
		custName = scnr.nextLine();
		System.out.println("Enter Today's Date:");
		curDate=scnr.nextLine();
		ShoppingCart cart = new ShoppingCart(custName, curDate);
		System.out.println();
		System.out.println("Customer Name: "+custName);
		System.out.println("Today's Date: "+curDate);
		System.out.println();

		printMenu();

		char userInput;
		userInput = 0;

		while (userInput != 'q'){
				userInput = scnr.next().charAt(0);
				scnr.nextLine();
				switch (userInput) {
					case 'a':  addItem(cart, scnr);
							   userInput = 0;
							   printMenu();
							   break;
					case 'd':  removeItem(cart, scnr);
							   userInput = 0;
							   printMenu();
							   break;
					case 'c':  changeItemQuantity(cart, scnr);
							   userInput = 0;
							   printMenu();
							   break;
					case 'i': printDesc(cart);
							  userInput = 0;
							  printMenu();
							  break;
					case 'o': outputCart(cart);
							  userInput = 0;
							  printMenu();
							  break;
					default:
							  System.out.println("Choose an option:");
				}
		}
	}

	public static void printMenu(){
		System.out.println("MENU\n"+
				"a - Add item to cart\n"+
				"d - Remove item from cart\n"+
				"c - Change item quantity\n"+
				"i - Output items' descriptions\n"+
				"o - Output shopping cart\n"+
				"q - Quit");
			System.out.println("\nChoose an option:");
	}

	public static void addItem(ShoppingCart cart, Scanner scnr){
		ItemToPurchase item = new ItemToPurchase();
		System.out.println("ADD ITEM TO CART");
		System.out.println("Enter the item name:");
		item.setName(scnr.nextLine());
		System.out.println("Enter the item description:");
		item.setDescription(scnr.nextLine());
		System.out.println("Enter the item price:");
		item.setPrice(scnr.nextInt());
		System.out.println("Enter the item quantity:");
		System.out.println();
		item.setQuantity(scnr.nextInt());
		cart.addItem(item);
	}

	public static void removeItem(ShoppingCart cart, Scanner scnr){
		System.out.println("REMOVE ITEM FROM CART");
		System.out.println("Enter name of item to remove:");
		String user = scnr.nextLine();
		cart.removeItem(user);
	}
	public static void changeItemQuantity(ShoppingCart cart, Scanner scnr){
		ItemToPurchase item = new ItemToPurchase();

		System.out.println("CHANGE ITEM QUANTITY");
		System.out.println("Enter the item name:");
		item.setName(scnr.nextLine());
		System.out.println("Enter the new quantity:");
		item.setQuantity(scnr.nextInt());
		scnr.nextLine();
		cart.modifyItem(item);
	}
	public static void printDesc(ShoppingCart cart){
		System.out.println("OUTPUT ITEMS' DESCRIPTIONS");
		cart.printDescriptions();
	}
	public static void outputCart(ShoppingCart cart){
		System.out.println("OUTPUT SHOPPING CART");
		cart.printTotal();
	}

}