import 'package:energy/algorithms/energy.dart';
import 'package:energy/algorithms/heat_capacity.dart';
import 'package:flutter/material.dart';

class EnergyModel with ChangeNotifier {
  double _mass = 0.0;   // in kg
  double _hStart = 0.0; // in m
  double _hEnd = 0.0;
  double _vStart = 0.0; // in m/s
  double _vEnd = 0.0;

  double get mass => _mass;
  double get hStart => _hStart;
  double get hEnd => _hEnd;
  double get vStart => _vStart;
  double get vEnd => _vEnd;

  set mass(double mass) {
    _mass = mass;
    notifyListeners();
  }
  set hStart(double height) {
    _hStart = height;
    notifyListeners();
  }
  set hEnd(double height) {
    _hEnd = height;
    notifyListeners();
  }
  set vStart(double velocity) {
    _vStart = velocity;
    notifyListeners();
  }
  set vEnd(double height) {
    _vEnd = height;
    notifyListeners();
  }

  get energy => freedEnergy(_mass, _hStart, _hEnd, _vStart, _vEnd);
  get water => literWaterThatCanBeBoiled(energy);
  get iron => kgIronThatCanBeHeatetUntilRed(energy);

}