/*
* Name: Kolby Ihlen
* ID:   V00901667
* Date: October 23, 2017
* Filename: CalendarGames.java
* Details: CSC110 Assignment 04
*/
import java.util.*;

public class CalendarGames{


public static String monthToString(int month){
String monthString;
switch (month) {
            case 1:  return "January";
            case 2:  return "February";
            case 3:  return "March";
            case 4:  return "April";
            case 5:  return "May";
            case 6:  return "June";
            case 7:  return "July";
            case 8:  return "August";
            case 9:  return "September";
            case 10: return "October";
            case 11: return "November";
            case 12: return "December";
            default: return "Invalid month";
        }

}


public static boolean isLeapYear(int year){
if ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0))) {
		return true;
	} else {
		return false;
	}
    }





public static int numDaysInMonth(int month, int year){
if (month==2){
	if(isLeapYear(year)){
		return 29;
	}
	else{
	return 28;
	}
	}
	else if(month==4||month==6||month==9||month==11){
		return 30;
	}
	else{
		return 31;
	}

}



public static void guessMyBirthday(){
    int min = 0;
    int max = 13;
    Scanner ob = new Scanner(System.in);
    boolean correct = false;
    int guessMonth = 0;
    String question;
    int foundDay = 0;
    int foundMonth = 0;
    int foundYear;
    while(correct==false){
        guessMonth=(min+max)/2;
        System.out.print("Is your birthday in "+monthToString(guessMonth)+"? yes or no: ");
        question=ob.nextLine();
        if(question.equals("yes")){
           foundMonth=guessMonth;
        } else if(question.equals("no")) {
            System.out.print("Is your birthday after this month? yes or no: ");
            question = ob.nextLine();
            if(question.equals("yes")){
                min=guessMonth;
            } else if(question.equals("no")){
                max=guessMonth;
            } else {
                System.out.println("Not a month");
            }
        } else {
            System.out.println("Wrong input");
        }
    }
    if(foundMonth==2){
        System.out.print("What year were you born? ");
        foundYear=ob.nextInt();
    } else {
        foundYear=0;
    }
    correct=false;
    min=0;
    max=numDaysInMonth(foundMonth, foundYear);
    while(correct==false){
       int guessDay=(min+max)/2;
        System.out.print("Is your birthday on "+monthToString(foundMonth)+guessDay+"? yes or no: ");
        question=ob.nextLine();
        if(question.equals("yes")){
           foundDay=guessDay;
        } else if(question.equals("no")) {
            if(question.equals("yes")){
                min=guessDay;
            } else if(question.equals("no")){
                max=guessDay;
            } else {
                System.out.println("Not a month");
            }
        } else {
            System.out.println("Wrong input");
        }
    }
    System.out.println("Your birthday is on "+monthToString(foundMonth)+foundDay+".");
}


	public static void main(String[] args){
		guessMyBirthday();


}
}