import java.util.Scanner;

/**
 * An application to help determine whether you need to file taxes
 * 
 * This class illustrates:
 * - Why helper methods should be private (instead of public)
 * - How private methods can help reduce the amount of repetition in your code
 *   thereby making your code shorter, more readable, and easier to modify/extend/maintain.
 * 
 * @author alchambers
 * @version sp19
 */
public class BetterTaxHelper{    

    private static void printGreeting(){
        System.out.println("=======================================");
        System.out.println("Welcome to the Tax Center!");
        System.out.println("We offer non-professional tax help.");
        System.out.println("Use at your own risk!");
        System.out.println("Please type \"yes\" or \"no\" for each question");
        System.out.println("=======================================");        
        System.out.println();        
    }
    
    private static boolean isYes(String question, Scanner input){
        System.out.println("Are you married? (yes/no)");         
        String answer = input.nextLine();        
        return answer.equals("yes");
    }

    private static void makeFinalDecision(int income, Scanner input){
        String incomeQuestion = "Is your combined gross income more than $" + income;
        if(isYes(incomeQuestion, input)){
            System.out.println("Yes, you must file taxes");
        } 
        else{
            System.out.println("No, you do not need to file taxes");
        } 
    }

    // This main method is now 26 lines long!
    public static void main(String[] args){
        printGreeting();
        Scanner input = new Scanner(System.in);

        if(isYes("Are you married?", input)){
            if(isYes("Are you and your spouse both over 65?", input)){
                makeFinalDecision(30000, input);
            }
            else{
                if(isYes("Is one of you over 65?", input)){  
                    makeFinalDecision(27000, input);
                }
                else{
                    makeFinalDecision(25000, input);
                }
            }
        }
        else{
            if(isYes("Are you over 65 years of age?", input)){
                makeFinalDecision(27000, input);
            }
            else{
                makeFinalDecision(24500, input);
            }
        }
    }
}