package facebook;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

public class Facebook {
    Map<String, Person> persons = new TreeMap<String, Person>();
    Person p;
    Group g;
    List<Person> per;

    public void addPerson(String code, String name, String surname)
            throws PersonExistsException {
        p = new Person(code, name, surname);

        persons.put(code, p);
        if (persons.containsKey(code)) {
            throw new PersonExistsException();
        }
    }

    public String getPerson(String code) throws NoSuchCodeException {
        if (!persons.containsKey(code)) {
            throw new NoSuchCodeException();
        }

        return persons.toString();
    }

    public void addFriendship(String codePerson1, String codePerson2)
            throws NoSuchCodeException {

        persons.put(codePerson1, p);
        persons.put(codePerson2, p);
        if (!persons.containsKey(codePerson2)
                || !persons.containsKey(codePerson1)) {
            throw new NoSuchCodeException();
        }

    }

    public Collection<String> listOfFriends(String codePerson)
            throws NoSuchCodeException {
        if (persons.containsKey(codePerson))

            return persons.keySet();
        else {
            throw new NoSuchCodeException();
        }
    }

    public Collection<String> friendsOfFriends(String codePerson)
            throws NoSuchCodeException {

        // if(persons.containsKey(codePerson)){}
        return null;
        // else {throw new NoSuchCodeException();}
    }

    public Collection<String> friendsOfFriendsNoRepitition(String codePerson)
            throws NoSuchCodeException {

        // Iterator con if e remove
        return null;
    }

    public void addGroup(String groupName) {
        g = new Group(groupName);
        List<Group> groups = new LinkedList<Group>();
        // Group g = new Group( groupName);
        groups.add(g);
    }

    public Collection<String> listOfGroups() {

        return null;
    }

    public void addPersonToGroup(String codePerson, String groupName) {

    }

    public Collection<String> listOfPeopleInGroup(String groupName) {
        return null;
    }

    public String personWithLargestNumberOfFriends() {
        // dovrei fazre un iterator e usare un contatore per vedere chi è

        return null;
    }

    public String personWithMostFriendsOfFriends() {
        return null;
    }

    public String largestGroup() {
        return null;
    }

    public String personInLargestNumberOfGroups() {
        return null;
    }
}