package edu.kit.informatik;
import java.util.InputMismatchException;
import java.lang.NumberFormatException;
public class Main {
/**
 * @author Aleksandra PawelekT
 */
/**
 *  opens console and reads commands from user
 * @param args
 */
public static void main(String[]args) {
while (true) {
try {
String input = Terminal.readLine();
if (input.trim().startsWith("quit")) {
return;
} else if (input.trim().startsWith("check-narcissistic-number")) {
//separates command from numbers
String[] separateFromCommand = input.trim().split(" ");
//separates number from basis
String[] separateNumberFromBasis = separateFromCommand[1].split(";");
//saves basis as int and number in int array
int basis = Integer.parseInt(separateNumberFromBasis[1]);
int[] number = new int[separateNumberFromBasis[0].length()];
int j = 0;
for (int i = separateNumberFromBasis[0].trim().length() - 1; i >= 0; i--) {
number[j] = Character.getNumericValue(separateNumberFromBasis[0].charAt(i));
j++;
}
//proofes if number from input is an narcissistic number
if (myInputNumber(number, basis) == requiredTermForNarcisticNumbers(number))  {
Terminal.printLine(true);
} else {
Terminal.printLine(false);
}
}
} catch (InputMismatchException e) {
Terminal.printError("you gave flase input.");
} catch (NumberFormatException e) {
Terminal.printError("you gave the number in false form.");
}
}
}
/**
 *  calculates number from input to narcissistic number
 */
public static int myInputNumber(int[] number, int basis) {

int a = 0;
for (int i = 0; i < number.length; i++) {
if (0 <= number[i] && number[i] <= basis - 1 && i <= basis) {
int sum = number[i] * (int) Math.pow(basis, i);
a =  a + sum;
}
}
return a;
}
/**
 * calculates required term for narcisstic numbers
 * @param number
 * @return
 */
public static double requiredTermForNarcisticNumbers(int[] number) {
int n = number.length;
double narcissticNumber = 0;
for (int i = 0; i < n; i++) {
narcissticNumber = narcissticNumber + Math.pow(number[i], n);
}
return narcissticNumber;
}
}