#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015 Leandro Toledo de Souza <leandrotoeldodesouza@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program.  If not, see [http://www.gnu.org/licenses/].

"""This module contains a object that represents a Telegram Contact"""

from telegram import TelegramObject


class Contact(TelegramObject):
    """This object represents a Telegram Contact.

    Attributes:
        phone_number (str):
        first_name (str):
        last_name (str):
        user_id (int):

    Args:
        phone_number (str):
        first_name (str):
        **kwargs: Arbitrary keyword arguments.

    Keyword Args:
        last_name (Optional[str]):
        user_id (Optional[int]):
    """

    def __init__(self,
                 phone_number,
                 first_name,
                 **kwargs):
        # Required
        self.phone_number = phone_number
        self.first_name = first_name
        # Optionals
        self.last_name = kwargs.get('last_name', '')
        self.user_id = int(kwargs.get('user_id', 0))

    @staticmethod
    def de_json(data):
        """
        Args:
            data (str):

        Returns:
            telegram.Contact:
        """
        if not data:
            return None

        contact = dict()

        # Required
        contact['phone_number'] = data['phone_number']
        contact['first_name'] = data['first_name']
        # Optionals
        contact['last_name'] = data.get('last_name')
        contact['user_id'] = data.get('user_id', 0)

        return Contact(**contact)

    def to_dict(self):
        """
        Returns:
            dict:
        """
        data = dict()

        # Required
        data['phone_number'] = self.phone_number
        data['first_name'] = self.first_name
        # Optionals
        if self.last_name:
            data['last_name'] = self.last_name
        if self.user_id:
            data['user_id'] = self.user_id

        return data