package com.company;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

public class Main {

    public static class GasType {
        public String Name;
        public double Price;

        public GasType(String name, double price){
            Name = name;
            Price = price;
        }

        @Override
        public boolean equals(Object obj) {
            if(obj == this){
                return true;
            }

            if (!(obj instanceof GasType)) {
                return false;
            }

            GasType g = (GasType) obj;

            return Name.compareTo(g.Name) == 0
                  && Double.compare(Price, g.Price) == 0;

        }

        @Override
        public String toString() {
            return Name + " " + Price;
        }
    }

    public static class Employee {
        public String FirstName;
        public String LastName;

        Employee(String firstName, String lastName){
            FirstName = firstName;
            LastName = lastName;
        }

        @Override
        public boolean equals(Object obj) {
            if(obj == this){
                return true;
            }

            if (!(obj instanceof Employee)) {
                return false;
            }

            Employee e = (Employee) obj;

            return FirstName.compareTo(e.FirstName) == 0
                  && LastName.compareTo(e.LastName) == 0;

        }

        @Override
        public String toString() {
            return FirstName + " " + LastName;
        }
    }

    public static class GasTypesCustomComparator implements Comparator<GasType> {

        @Override
        public int compare(GasType gasType, GasType t1) {
            int priceComparator = Double.compare(gasType.Price, t1.Price);
            int nameComparator = gasType.Name.compareTo(t1.Name);

            if(priceComparator == 0){
                return nameComparator;
            }

            return priceComparator;
        }
    }

    public static class GasStation {
        public ArrayList<GasType> gasTypes;
        public ArrayList<Employee> employees;

        GasStation() {
            this.gasTypes = new ArrayList<>();
            this.employees = new ArrayList<>();
        }

        public void addGasType(GasType gasType) {
            if(gasType != null){
                this.gasTypes.add(gasType);
            }
        }

        public void removeGasType(GasType gasType){
            if(gasType != null){
                this.gasTypes.remove(gasType);
            }
        }

        public void addEmployee(Employee empl) {
            if(empl != null){
                this.employees.add(empl);
            }
        }

        public void removeEmployee(Employee empl){
            if(empl != null){
                this.employees.remove(empl);
            }
        }

        public void showGasTypes() {
            ArrayList gasTypes = (ArrayList)this.gasTypes.clone();
            Collections.sort(gasTypes, new GasTypesCustomComparator());

            System.out.println(gasTypes.toString());
        }
    }

    public static void main(String[] args) {

        GasType gasType1 = new GasType("aaab", 2);
        GasType gasType2 = new GasType("bbc", 2);
        GasType gasType3 = new GasType("ab", 2);

        Employee empl = new Employee("Ivan", "Ivanov");

        GasStation gasStation = new GasStation();
        gasStation.addGasType(gasType1);
        gasStation.addGasType(gasType2);
        gasStation.addGasType(gasType3);
        gasStation.addEmployee(empl);

        gasStation.showGasTypes();
    }
}