package a_Zadania.a_Dzien_1.d_Konstruktor;

import a_Zadania.a_Dzien_1.c_Metody.Person;

import java.lang.reflect.Array;
import java.text.DecimalFormat;
import java.util.ArrayList;

public class Calculator {
    private ArrayList<String> log = new ArrayList<>();

    public Calculator() {
    }

    public double add(double num1, double num2)
    {
        double result = num1 + num2;
        log.add("added " + num1 + " to "  + num2 + " got " + result);
        return result;
    }
    public double multiply(double num1, double num2)
    {
        double result = num1 * num2;
        log.add("multiplied " + num1 + " with "  + num2 + " got " + result);
        return result;
    }
    public double subtract(double num1, double num2)
    {
        double result = num1 - num2;
        log.add("subtracted " + num1 + " from "  + num2 + " got " + result);
        return result;
    }
    public  double divide(double num1, double num2) throws ArithmeticException
    {
        DecimalFormat df = new DecimalFormat("#.##");
        if(num2==0) throw new ArithmeticException();
        double result  = num1 / num2;
        log.add("divided " + num1 + " by "  + num2 + " got " + df.format(result));
        return result;
    }

    public void printOperations()
    {
        System.out.println("==========Operacje=========");
        log.forEach(System.out::println);
        System.out.println("===========================");

    }
    public void clearOperations()
    {
        System.out.println("Wyczyszczono operacje");
        log.clear();
    }

    public void addToLog(String message)
    {
        log.add(message);
    }


    public static void main(String[] args) {
        Calculator calculator = new Calculator();
        System.out.println(calculator.add(2,2));
        try {
            System.out.println(calculator.divide(2,0));
        } catch (ArithmeticException e) {
            System.out.println("Nie dzieli sie przez 0");
            calculator.addToLog("Tried divide by 0");
        }
        System.out.println(calculator.multiply(4,4));
        System.out.println(calculator.subtract(4,5));
        calculator.printOperations();
        calculator.clearOperations();
        calculator.printOperations();
    }

}