"""Inline buttons, galleries and other Telegram-Bot-API stuff"""

# █ █ ▀ █▄▀ ▄▀█ █▀█ ▀    ▄▀█ ▀█▀ ▄▀█ █▀▄▀█ ▄▀█
# █▀█ █ █ █ █▀█ █▀▄ █ ▄  █▀█  █  █▀█ █ ▀ █ █▀█
#
#              © Copyright 2022
#
#          https://t.me/hikariatama
#
# 🔒 Licensed under the GNU GPLv3
# 🌐 https://www.gnu.org/licenses/agpl-3.0.html

import asyncio
import logging
import time

from aiogram import Bot, Dispatcher
from aiogram.types import ParseMode
from aiogram.utils.exceptions import TerminatedByOtherGetUpdates, Unauthorized
from telethon.errors.rpcerrorlist import InputUserDeactivatedError, YouBlockedUserError
from telethon.tl.functions.contacts import UnblockRequest
from telethon.utils import get_display_name

from ..database import Database
from .bot_pm import BotPM
from .events import Events
from .form import Form
from .gallery import Gallery
from .list import List
from .query_gallery import QueryGallery
from .token_obtainment import TokenObtainment
from .utils import Utils

logger = logging.getLogger(__name__)


class InlineManager(
    Utils,
    Events,
    TokenObtainment,
    Form,
    Gallery,
    QueryGallery,
    List,
    BotPM,
):
    _units = {}
    _custom_map = {}

    fsm = {}

    _web_auth_tokens = []

    _markup_ttl = 60 * 60 * 24

    init_complete = False

    def __init__(
        self,
        client: "TelegramClient",  # noqa: F821
        db: Database,
        allmodules: "Modules",  # noqa: F821
    ):
        """Initialize InlineManager to create forms"""
        self._client = client
        self._db = db
        self._allmodules = allmodules

        self._token = db.get("hikka.inline", "bot_token", False)

    async def _cleaner(self):
        """Cleans outdated inline units"""
        while True:
            for unit_id, unit in self._units.copy().items():
                if unit.get("ttl", time.time() + self._markup_ttl) < time.time():
                    del self._units[unit_id]

            await asyncio.sleep(5)

    async def _register_manager(
        self,
        after_break: bool = False,
        ignore_token_checks: bool = False,
    ):
        # Get info about user to use it in this class
        me = await self._client.get_me()
        self._me = me.id
        self._name = get_display_name(me)

        if not ignore_token_checks:
            # Assert that token is set to valid, and if not,
            # set `init_complete` to `False` and return
            is_token_asserted = await self._assert_token()
            if not is_token_asserted:
                self.init_complete = False
                return

        # We successfully asserted token, so set `init_complete` to `True`
        self.init_complete = True

        # Create bot instance and dispatcher
        self.bot = Bot(token=self._token, parse_mode=ParseMode.HTML)
        self._bot = self.bot  # This is a temporary alias so the
        # developers can adapt their code
        self._dp = Dispatcher(self.bot)

        # Get bot username to call inline queries
        try:
            bot_me = await self.bot.get_me()
            self.bot_username = bot_me.username
            self.bot_id = bot_me.id
        except Unauthorized:
            logger.critical("Token expired, revoking...")
            return await self._dp_revoke_token(False)

        # Start the bot in case it can send you messages
        try:
            m = await self._client.send_message(self.bot_username, "/start")
        except (InputUserDeactivatedError, ValueError):
            self._db.set("hikka.inline", "bot_token", None)
            self._token = False

            if not after_break:
                return await self._register_manager(True)

            self.init_complete = False
            return False
        except YouBlockedUserError:
            await self._client(UnblockRequest(id=self.bot_username))
            try:
                m = await self._client.send_message(self.bot_username, "/start")
            except Exception:
                logger.critical("Can't unblock users bot", exc_info=True)
                return False
        except Exception:
            self.init_complete = False
            logger.critical("Initialization of inline manager failed!", exc_info=True)
            return False

        await self._client.delete_messages(self.bot_username, m)

        # Register required event handlers inside aiogram
        self._dp.register_inline_handler(
            self._inline_handler,
            lambda inline_query: True,
        )

        self._dp.register_callback_query_handler(
            self._callback_query_handler,
            lambda query: True,
        )

        self._dp.register_chosen_inline_handler(
            self._chosen_inline_handler,
            lambda chosen_inline_query: True,
        )

        self._dp.register_message_handler(
            self._message_handler,
            lambda *args: True,
            content_types=["any"],
        )

        old = self.bot.get_updates
        revoke = self._dp_revoke_token

        async def new(*args, **kwargs):
            nonlocal revoke, old
            try:
                return await old(*args, **kwargs)
            except TerminatedByOtherGetUpdates:
                await revoke()
            except Unauthorized:
                logger.critical("Got Unauthorized")
                await self._stop()

        self.bot.get_updates = new

        # Start polling as the separate task, just in case we will need
        # to force stop this coro. It should be cancelled only by `stop`
        # because it stops the bot from getting updates
        self._task = asyncio.ensure_future(self._dp.start_polling())
        self._cleaner_task = asyncio.ensure_future(self._cleaner())

    async def _stop(self):
        self._task.cancel()
        self._dp.stop_polling()
        self._cleaner_task.cancel()

    def pop_web_auth_token(self, token) -> bool:
        """Check if web confirmation button was pressed"""
        if token not in self._web_auth_tokens:
            return False

        self._web_auth_tokens.remove(token)
        return True


if __name__ == "__main__":
    raise Exception("This file must be called as a module")