/**
 * @author Wesley Liu
 */
import java.util.Scanner;
public class BMICalculatorApp {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    boolean hello = false;
    while(!hello){
    System.out.println("Please type your name. ");
    String name = input.next();
    System.out.println("Please type your weight.");
    double weight = 0.0;
    boolean isValidDouble = false;//indicates if our input entry is a double
    boolean isValidRange = false; //indicates if our input entry is in the right range
        while(!(isValidDouble==true && isValidRange == true))
        {
            try {
                //statements may throw an exception should be in try block
                //take input entry from user
                weight = input.nextDouble();//may throw an exception
                //System.out.println("after nextint()");//will be skipped if an exception is thrown
                isValidDouble = true;
            } catch (Exception e) {
                input.next();//discard the incorrecly entered value from the pipe
                //statements to handle exceptions
                System.out.println(e);
                System.out.println("Please type a valid weight, try again.");
            }
            //if it is a double
            if (isValidDouble) {
                //start to determine if it is in the right range [30, 300]
                if (weight < 30 || weight > 300) {
                    System.out.println("Invalid, please type a weight between 30 and 300.");
                }
                else
                {
                    isValidRange = true;//we have the valid range entry
                }
            }
        }
        System.out.println("Please type your height.");
        double height = 0.0;
        isValidDouble = false;
        isValidRange = false;
        while(!(isValidDouble==true && isValidRange == true))
        {
            try {
                //statements may throw an exception should be in try block
                //take input entry from user
                height = input.nextDouble();//may throw an exception
                //System.out.println("after nextint()");//will be skipped if an exception is thrown
                isValidDouble = true;
            } catch (Exception a) {
                input.next();//discard the incorrecly entered value from the pipe
                //statements to handle exceptions
                System.out.println(a);
                System.out.println("Please type a valid height, try again.");
            }
            //if it is a double
            if (isValidDouble) {
                //start to determine if it is in the right range [30, 300]
                if (height < 30 || height > 100) {
                    System.out.println("Invalid, please type a height between 30 and 100.");
                }
                else
                {
                    isValidRange = true;//we have the valid range entry
                }
            }
        }
        BMICalculator calculator = new BMICalculator(name, weight, height);
        String category = calculator.calculateBMIandPrintCategory(calculator.getName(), calculator.getWeight(), calculator.getHeight());
        System.out.println(category);
        System.out.println("Continue? y/n");
        String choice = input.next();
        if(choice.toUpperCase().equals("N"))
        {
        hello = true;
        }
    }
    }
}