#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2023
# 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/].
"""This module contains an object that represents a Telegram Contact."""
from typing import Optional

from telegram._telegramobject import TelegramObject
from telegram._utils.types import JSONDict


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

    Objects of this class are comparable in terms of equality. Two objects of this class are
    considered equal, if their :attr:`phone_number` is equal.

    Args:
        phone_number (:obj:`str`): Contact's phone number.
        first_name (:obj:`str`): Contact's first name.
        last_name (:obj:`str`, optional): Contact's last name.
        user_id (:obj:`int`, optional): Contact's user identifier in Telegram.
        vcard (:obj:`str`, optional): Additional data about the contact in the form of a vCard.

    Attributes:
        phone_number (:obj:`str`): Contact's phone number.
        first_name (:obj:`str`): Contact's first name.
        last_name (:obj:`str`): Optional. Contact's last name.
        user_id (:obj:`int`): Optional. Contact's user identifier in Telegram.
        vcard (:obj:`str`): Optional. Additional data about the contact in the form of a vCard.

    """

    __slots__ = ("vcard", "user_id", "first_name", "last_name", "phone_number")

    def __init__(
        self,
        phone_number: str,
        first_name: str,
        last_name: Optional[str] = None,
        user_id: Optional[int] = None,
        vcard: Optional[str] = None,
        *,
        api_kwargs: Optional[JSONDict] = None,
    ):
        super().__init__(api_kwargs=api_kwargs)
        # Required
        self.phone_number: str = str(phone_number)
        self.first_name: str = first_name
        # Optionals
        self.last_name: Optional[str] = last_name
        self.user_id: Optional[int] = user_id
        self.vcard: Optional[str] = vcard

        self._id_attrs = (self.phone_number,)

        self._freeze()
