// Uses the CoinPurse class
// Beth Katz - January 2008

public class PlayMoney {

	public static void main(String[] args) {
		CoinPurse leather, vinyl, linen, plastic, squeeze;
		CoinPurse empty, copy;
		
		leather = new CoinPurse( );
		printPurse(leather, "Leather");
		System.out.println("Leather contains " + leather.numQuarters( ) + " quarters.");
		leather.addQuarters(3);
		System.out.println("Leather contains " + leather.numQuarters( ) + " quarters.");
		System.out.println("After adding three quarters, leather should contain 75 cents.");
		printPurse(leather, "Leather");
		
		System.out.println( );
		
		vinyl = new CoinPurse(2, 1, 3, 4);
		printPurse(vinyl, "Vinyl");
		
		linen = new CoinPurse(1, 0, 0, 0);
		printPurse(linen, "Linen");
		
		plastic = new CoinPurse(2, 3, 4, 9);
		printPurse(plastic, "Plastic");
		
		squeeze = new CoinPurse(8, 7, 6, 1);
		printPurse(squeeze, "Squeeze");
		
		System.out.println( );

		plastic.transferFrom(squeeze);
		System.out.println("After transfer from squeeze, squeeze should be empty"
							+ " and plastic should have ten of each coin denomination.");		
		printPurse(plastic, "Plastic");
		printPurse(squeeze, "Squeeze");

		System.out.println( );
		empty = new CoinPurse( );
		reportEquals("Squeeze and empty", squeeze, empty);
		
		copy = plastic;
		reportEquals("Copy and plastic after assignment", copy, plastic);
		
		copy = plastic.clone( );
		reportEquals("Copy and plastic after cloning", copy, plastic);
	}

	// prints a purse with a label
	public static void printPurse(CoinPurse cp, String label) {
		System.out.println(label + " purse contains " + cp + " which total " + cp.value( ) + " cents.");		
	}

	// report on whether or not two purses are equal using equals and ==
	public static void reportEquals(String label, CoinPurse a, CoinPurse b) {
		System.out.print(label + " are ");
		if (!a.equals(b)) {
			System.out.print("not ");
		}
		System.out.println("equal by equals method.");
		
		System.out.print(label + " are ");
		if (a != b) {
			System.out.print("not ");
		}
		System.out.println("equal by ==.");		
	}

}