lab1

const _ = require('lodash');
const Calculator = require('./Calculator.js')

function sum1() {
  sum = 0;
  for(i = 0; i < arguments.length;i++){
    sum += arguments[i];
  }
  console.log(sum);
}
sum1(1,2,3,4,5);
sum1(2,4,6);

function sum2() {
  sum = _.sum(arguments);
  console.log(sum);
}
sum2(1,2,3,4,5);

function sumProt() {
  let err = false;
  let sum = 0;
  for(i = 0; i < arguments.length;i++){
    if(_.isString(arguments[i]) || _.isObject(arguments[i])) {
        err = true;
        console.log("Podano błędny argument: "+ arguments[i] + " na pozycji: "+ (i+1));
    }
      sum += arguments[i];
  }
  if(!err){
    console.log(sum);
  }
}
sumProt(1,"text",3,{},5);

console.log("====================================================")

const item1 = new Calculator([1, 2, 3, 4, 5])
const item2 = new Calculator([1, "text", 3, {}])

item1.sum()
item1.substract()

item2.sum()
item2.substract()
===========================================================================
const _ = require('lodash');
module.exports = class Calculator {
  constructor(items) {

    this.items= _.filter(items, function(o) {
      return !(_.isString(o) || _.isObject(o))})
      for(let i = 0; i < items.length;i++) {
      if(_.isString(items[i]) || _.isObject(items[i])) {
        console.log("Podano błędny argument: "+ items[i] + " na pozycji: "+ (i+1));
      }
    }
  }

  sum(){
    var sum = _.reduce(this.items, function(sum, n) {
      return sum + n;}, 0);
    console.log("Suma wartosci ["+this.items+"] "+"wynosi: " +sum);
    // return sum
  }

  substract() {
      var sub = _.reduce(this.items, function(sub, n) {
        return sub - n;});
      console.log("Różnica z wartosci ["+this.items+"] "+"wynosi: " +sub);
      // return sub
  }
}