package collections;

import java.text.*;
import java.util.*;

class Person implements Comparable<Object>
{
    private String f_name;
    private String l_name;
    private int    age;
    private static final Collator collator = Collator.getInstance(Locale.getDefault());
    private CollationKey sortFirstNameKey;
    private CollationKey sortLastNameKey;

    Person(String f_name, String l_name, int age)
    {
        this.f_name=f_name;
        this.l_name=l_name;
        this.age=   age;
        sortFirstNameKey = collator.getCollationKey(f_name.toUpperCase() + " " + l_name.toUpperCase());
        sortLastNameKey = collator.getCollationKey(l_name.toUpperCase() + " " + f_name.toUpperCase());
    }

    public int getAge()
    {
        return age;
    }

    public String getFName()
    {
        return f_name;
    }

      public String getLName()
    {
        return l_name;
    }

    public CollationKey getF_key()
    {
        return sortFirstNameKey;
    }


    public CollationKey getL_key()
    {
        return sortLastNameKey;
    }

    public int compareTo(Object p)
    {
	if(this.age<((Person)p).age)
		return -1;
	if (this.age>((Person)p).age)
		return 1;
	return 0;
    }

    public String toString()
    {
        return "  Name: " + f_name + " " + l_name + "  Age: " + age;
    }
}

class LastNameComparator implements Comparator<Object>
{

    public int compare(Object ln , Object ln2)
    {
        int res = ((Person)ln).getLName().compareTo(((Person)ln2).getLName());
        if(res == 0)
        {
            res = ((Person)ln).getFName().compareTo(((Person)ln2).getFName());
        }
        return res;
    }

}

class FirstNameComparator implements Comparator<Object>
{

       public int compare(Object ln , Object ln2)
    {
        int res = ((Person)ln).getFName().compareTo(((Person)ln2).getFName());
        if(res == 0)
        {
            res = ((Person)ln).getLName().compareTo(((Person)ln2).getLName());
        }
        return res;
    }

}

class User extends Person implements Comparable<Object>
{
    private String userName;
    private String pass;

    User(String userName, String pass, String f_name, String l_name, int age)
    {   super(f_name,l_name,age);
        this.userName = userName;
        this.pass     = pass;
    }


    public String getUserName()
    {
        return userName;
    }

    public String getPass()
    {
        return pass;
    }

    public boolean equals(Object u)
    {
        return (this.userName.equals(((User)u).userName)) && (this.pass.equals(((User)u).pass));
    }

    public int compareTo(Object p)
    {
	int res = userName.compareTo(((User)p).userName);
        if(res == 0)
        {
            res = pass.compareTo(((User)p).pass);
        }
        return res;
    }


    public String toString()
    {
        return "  User Name: " + userName + super.toString();
    }
}

public class UsersGroup {

    private String groupName;
    private List <User>  users = new Vector<User>();

    UsersGroup(String groupName)
    {
        this.groupName = groupName;
    }

    public void addUser(User a)
    {
        users.add(a);
    }

    public void sortByLastName()
    {
        Collections.sort(users, new LastNameComparator());
    }

    public void sortByFirstname()
    {
        Collections.sort(users,new FirstNameComparator());
    }

    public void sortByUserName()
    {
        Collections.sort(users);
    }

    public String toString()
    {
        return "Group Name: " + groupName + users;
    }

    public static void main(String[] args) {
        UsersGroup a = new UsersGroup("Group 1");
        User b = new User("ivanDjukata", "12345", "Ivan","Djukalov" ,14);
        User c = new User("passaMiESilen", "qkPass", "Preslav","Panaiotov" ,21);
        User d = new User("KiroEQk", "54321", "Kiro","Sehalov" ,17);
        a.addUser(b);
        a.addUser(c);
        a.addUser(d);
        a.sortByLastName();
        System.out.println(a.toString());
        a.sortByFirstname();
        System.out.println(a.toString());
        a.sortByUserName();
        System.out.println(a.toString());

    }

}