import os
import json


class Contact:
    def __init__(self):
        self.names = ''
        self.last_name = ''
        self.maiden_name = ''
        self.emails = []
        self.phones = []

    def full_name(self):
        return ' '.join([self.names, self.last_name, self.maiden_name])


class AddressBook:
    def __init__(self, data_folder):
        filename = os.path.join(data_folder, 'address_book.json')
        with open(filename, 'r') as f:
            data = json.load(f)

        self.contacts = []
        for c in data:
            contact = Contact()
            for k, val in c.items():
                setattr(contact, k, val)
            self.contacts.append(contact)

    def find(self, name):
        for c in self.contacts:
            if c.full_name() == name or c.names == name or c.last_name == name:
                return c
        return None

    def find_id(self, name):
        for (k, c) in enumerate(self.contacts):
            if c.full_name() == name or c.names == name or c.last_name == name:
                return k
        return -1