#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2022
# 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/].
import datetime

import pytest
import pytz

from telegram import Bot, Chat, ChatInviteLink, ChatJoinRequest, User
from telegram._utils.datetime import to_timestamp
from tests.conftest import check_defaults_handling, check_shortcut_call, check_shortcut_signature


@pytest.fixture(scope='class')
def time():
    return datetime.datetime.now(tz=pytz.utc)


@pytest.fixture(scope='class')
def chat_join_request(bot, time):
    return ChatJoinRequest(
        chat=TestChatJoinRequest.chat,
        from_user=TestChatJoinRequest.from_user,
        date=time,
        bio=TestChatJoinRequest.bio,
        invite_link=TestChatJoinRequest.invite_link,
        bot=bot,
    )


class TestChatJoinRequest:
    chat = Chat(1, Chat.SUPERGROUP)
    from_user = User(2, 'first_name', False)
    bio = 'bio'
    invite_link = ChatInviteLink(
        'https://invite.link',
        User(42, 'creator', False),
        creates_join_request=False,
        name='InviteLink',
        is_revoked=False,
        is_primary=False,
    )

    def test_slot_behaviour(self, chat_join_request, mro_slots):
        inst = chat_join_request
        for attr in inst.__slots__:
            assert getattr(inst, attr, 'err') != 'err', f"got extra slot '{attr}'"
        assert len(mro_slots(inst)) == len(set(mro_slots(inst))), "duplicate slot"

    def test_de_json(self, bot, time):
        json_dict = {
            'chat': self.chat.to_dict(),
            'from': self.from_user.to_dict(),
            'date': to_timestamp(time),
        }
        chat_join_request = ChatJoinRequest.de_json(json_dict, bot)

        assert chat_join_request.chat == self.chat
        assert chat_join_request.from_user == self.from_user
        assert abs(chat_join_request.date - time) < datetime.timedelta(seconds=1)
        assert to_timestamp(chat_join_request.date) == to_timestamp(time)

        json_dict.update({'bio': self.bio, 'invite_link': self.invite_link.to_dict()})
        chat_join_request = ChatJoinRequest.de_json(json_dict, bot)

        assert chat_join_request.chat == self.chat
        assert chat_join_request.from_user == self.from_user
        assert abs(chat_join_request.date - time) < datetime.timedelta(seconds=1)
        assert to_timestamp(chat_join_request.date) == to_timestamp(time)
        assert chat_join_request.bio == self.bio
        assert chat_join_request.invite_link == self.invite_link

    def test_to_dict(self, chat_join_request, time):
        chat_join_request_dict = chat_join_request.to_dict()

        assert isinstance(chat_join_request_dict, dict)
        assert chat_join_request_dict['chat'] == chat_join_request.chat.to_dict()
        assert chat_join_request_dict['from'] == chat_join_request.from_user.to_dict()
        assert chat_join_request_dict['date'] == to_timestamp(chat_join_request.date)
        assert chat_join_request_dict['bio'] == chat_join_request.bio
        assert chat_join_request_dict['invite_link'] == chat_join_request.invite_link.to_dict()

    def test_equality(self, chat_join_request, time):
        a = chat_join_request
        b = ChatJoinRequest(self.chat, self.from_user, time)
        c = ChatJoinRequest(self.chat, self.from_user, time, bio='bio')
        d = ChatJoinRequest(self.chat, self.from_user, time + datetime.timedelta(1))
        e = ChatJoinRequest(self.chat, User(-1, 'last_name', True), time)
        f = User(456, '', False)

        assert a == b
        assert hash(a) == hash(b)
        assert a is not b

        assert a == c
        assert hash(a) == hash(c)

        assert a != d
        assert hash(a) != hash(d)

        assert a != e
        assert hash(a) != hash(e)

        assert a != f
        assert hash(a) != hash(f)

    async def test_approve(self, monkeypatch, chat_join_request):
        async def make_assertion(*_, **kwargs):
            chat_id_test = kwargs['chat_id'] == chat_join_request.chat.id
            user_id_test = kwargs['user_id'] == chat_join_request.from_user.id

            return chat_id_test and user_id_test

        assert check_shortcut_signature(
            ChatJoinRequest.approve, Bot.approve_chat_join_request, ['chat_id', 'user_id'], []
        )
        assert await check_shortcut_call(
            chat_join_request.approve, chat_join_request.get_bot(), 'approve_chat_join_request'
        )
        assert await check_defaults_handling(
            chat_join_request.approve, chat_join_request.get_bot()
        )

        monkeypatch.setattr(
            chat_join_request.get_bot(), 'approve_chat_join_request', make_assertion
        )
        assert await chat_join_request.approve()

    async def test_decline(self, monkeypatch, chat_join_request):
        async def make_assertion(*_, **kwargs):
            chat_id_test = kwargs['chat_id'] == chat_join_request.chat.id
            user_id_test = kwargs['user_id'] == chat_join_request.from_user.id

            return chat_id_test and user_id_test

        assert check_shortcut_signature(
            ChatJoinRequest.decline, Bot.decline_chat_join_request, ['chat_id', 'user_id'], []
        )
        assert await check_shortcut_call(
            chat_join_request.decline, chat_join_request.get_bot(), 'decline_chat_join_request'
        )
        assert await check_defaults_handling(
            chat_join_request.decline, chat_join_request.get_bot()
        )

        monkeypatch.setattr(
            chat_join_request.get_bot(), 'decline_chat_join_request', make_assertion
        )
        assert await chat_join_request.decline()