#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2016
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# 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/].

"""Base class for Telegram Objects."""

import json
from abc import ABCMeta


class TelegramObject(object):
    """Base class for most telegram objects."""

    __metaclass__ = ABCMeta

    def __str__(self):
        return str(self.to_dict())

    def __getitem__(self, item):
        return self.__dict__[item]

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

        Returns:
            telegram.TelegramObject:
        """
        raise NotImplementedError

    def to_json(self):
        """
        Returns:
            str:
        """
        return json.dumps(self.to_dict())

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

        for key, value in self.__dict__.items():
            if value:
                if hasattr(value, 'to_dict'):
                    data[key] = value.to_dict()
                else:
                    data[key] = value

        return data