import java.util.*;  //so that I can use Scanner
public class BoxOffice {

public static final int YEAR = 2014;

//Return true if the date is a valid date between March 1 and May 15
//Return false otherwise 
public static boolean isValidDate (int month, int day){
	boolean monthtest = true;
	boolean daytest = true;
	boolean ValidDateTest = true;
	
	if (month < 3 || month > 5) {
		monthtest = false;
		System.out.println("");
		System.out.println("Invalid Month");
		System.exit(1);
		}
	if (month == 3 & (day < 1 || day > 31)) {
		daytest = false;
		System.out.println("");
		System.out.println("Invalid Day");
		System.exit(1);
		}
	if (month == 4 & (day < 1 || day > 30)) {
		daytest = false;
		System.out.println("");
		System.out.println("Invalid Day");
		System.exit(1);
		}
	if (month == 5 & (day < 1 || day > 15)) {
		daytest = false;
		System.out.println("");
		System.out.println("Invalid Day");
		System.exit(1);
		}
	return ValidDateTest;
}

//This method must use Zeller's algorithm described below.
//Use 2014 as the year -- make this a class constant!
//You may assume the month and day are valid
//Return true if date falls on Monday through Thursday
//Return false if date falls on Friday through Sunday
public static boolean isWeekday (int month, int day) {
boolean monThurs = true;
int w = YEAR - (14 - month) / 12;

int x = w + w / 4 - w / 100 + w / 400;

int z = month +  12 * ((14 - month) / 12) - 2;

int DayOfWeek = (day + x + (31 * z) / 12) % 7;

if ((DayOfWeek > 0 & DayOfWeek < 1) || DayOfWeek > 4) {
	monThurs = false;
}
	return monThurs;
}

//Return cost of tickets 
//Throws an IllegalArgumentException if movie and/or date is/are invalid or number of tickets < 0
public static int getCost (char movie, int month, int day, boolean isMatinee,
                        int numberOfAdultTickets, int numberOfStudentTickets) {
	int price =  8;			
	int studentprice = price;
	if ((Character.toLowerCase(movie) == 'p' || Character.toLowerCase(movie) == 'g') && isMatinee == true) {
	price = price - 2;
	}
	else if ((Character.toLowerCase(movie) == 'p' || Character.toLowerCase(movie) == 'g') && isMatinee == false) {
	price = price;
	}
	
	if ((Character.toLowerCase(movie) == 'c') && isMatinee == true) {
	price = price;
	}
	else if ((Character.toLowerCase(movie) == 'c') && isMatinee == false) {
	price = price + 2;
	}

	if (isWeekday(month,day) == false) {
	price = price + 3;
	}
	
	if (isMatinee == true) {
	studentprice = (price);
	}
	else if (isMatinee == false) {
	studentprice = (price - 2);
	}
	
	int cost = (price * numberOfAdultTickets) + (numberOfStudentTickets * studentprice);
	return cost;
}

	public static void main (String[] args) {
	Scanner console = new Scanner(System.in);
	System.out.println("");
	System.out.println("");
	System.out.println("Welcome to the Wolfpack Theater Box Office!");
	System.out.println("");
	System.out.println("");
	System.out.println("When prompted, please enter the movie you would like see:");
	System.out.println("C (C-aptain Phillips), G (G-ravity), or P (P-hilomena).");
	System.out.println("Also, enter the date, whether it is a matinee, the number of adults, and");
	System.out.println("the number of student tickets you would like to purchase.");
	System.out.println("The total cost of the tickets will then be displayed.");
	
	System.out.println("");
	System.out.println("What movie would you like to see? (C, G, or P)");
	char movie = console.next().charAt(0);
	System.out.println("What number month would you like to see it? (3,4,5)");
	int monthInput = console.nextInt();
	System.out.println("What day of the month would you like to see it? (1-31 for month 3, 1-30 for month 4, 1-15 for month 5)");
	int dayInput = console.nextInt();	
	
	System.out.println("Matinee? (Y/N)");
	String matinee = console.next();
	
	System.out.println("How many adult movie tickets?");
	int adult = console.nextInt();
	System.out.println("How many student movie tickets?");
	int student = console.nextInt();
	
	System.out.println("Movie (C-aptain Phillips, G-ravity, P-hilomena): " + movie);
	
	if (isValidDate(monthInput, dayInput) == true) {
		System.out.println("Month: " + monthInput);
		System.out.println("Day: " + dayInput);
		}
	
	boolean isMatinee2 = true;
	if (matinee == "y" || (matinee == "Y")) {
		isMatinee2 = true;
	}
	else {
		isMatinee2 = false;
		}
		
	System.out.println("Matinee: " + matinee);	
	System.out.println("Cost of Tickets: $" + getCost(movie, monthInput, dayInput, isMatinee2, adult, student));
	
	}
}