import uwcse.io.Input; // use the Input class
import java.text.DecimalFormat; // to format the output

/**
 * Homework 3 <br>
 * Simulating a purchase in Canada paid in US dollars
 * 
 * @author <your name here>
 */

public class CanadianGiftShop {

	// Constants
	/** Exchange rate 1 US dollar = RATE Canadian dollar */
	public final double RATE = 1.16;

	/** Price of a jar of maple syrup in Canadian dollars before taxes */
	public final double JAR_PRICE = 5.95;

	/**
	 * Price of photograph of the city of Victoria in Canadian dollars before
	 * taxes
	 */
	public final double PHOTO_PRICE = 7.65;

	/** Price of a beaver hat in Canadian dollars before taxes */
	public final double HAT_PRICE = 16.35;

	/** Maximum allowed number of purchased items for each item */
	public final int MAX_ITEM = 100;

	/** Tax rate */
	public final double TAX_RATE = 0.093;

	// instance variables
	// number of purchased jars of maple syrup
	private int jarNumber;

	// number of purchased photographs of the city of Victoria
	private int photoNumber;

	// number of purchased beaver hats
	private int hatNumber;

	// 2 digits after the decimal point for doubles
	private DecimalFormat twoDigits = new DecimalFormat("0.00");

	// To input data from the user
	private Input in = new Input();

	/**
	 * Takes and processes the order from the customer
	 */
	public void takeAndProcessOrder() {
		// Here is a possible series of steps: call some other (private)
		// methods to do each step.

		// Display the items and their prices

		// Get the Customer's order
		input();
		// Get the user's USD payment

		// Give the change back in Canadian dollars
		double change = 13.2/7;
		System.out.println(
				"Change = " + twoDigits.format(change));
		System.out.println("Change = " + change);
	}

	// Some ideas for some private methods
	// You don't have to use exactly these same methods.

	/**
	 * Displays the items for sale and their prices in Canadian dollars
	 */
	private void itemList() {
	}

	/**
	 * Gets the customer's order Precondition: none Postcondition: jarNumber,
	 * photoNumber and hatNumber are initialized to a value between 0 and
	 * MAX_ITEM
	 */
	private void input() {
		jarNumber = in.readInt("How many jars of maple syrup would you like? ");
		if (jarNumber < 0) {
			System.out.println("You can't ask for a negative number");
			jarNumber = 0;
		}
		if (jarNumber > MAX_ITEM) {
			System.out.println("Sorry, we don't have that many in stock");
			jarNumber = 0;
		}
	}

	/**
	 * Given a purchase in canadian dollars and a payment in US dollars,
	 * displays the change amount in canadian dollars and cents
	 * 
	 * @param payUS
	 *            payment in US dollars
	 * @param costCA
	 *            purchase amount in Canadia dollars
	 */
	private void changeinCAD(double payUS, double costCA) {
	}

	/**
	 * Entry point of the program
	 */
	public static void main(String[] args) {
		new CanadianGiftShop().takeAndProcessOrder();
	}

}