#             █ █ ▀ █▄▀ ▄▀█ █▀█ ▀
#             █▀█ █ █ █ █▀█ █▀▄ █
#              © Copyright 2022
#           https://t.me/hikariatama
#
# 🔒      Licensed under the GNU AGPLv3
# 🌐 https://www.gnu.org/licenses/agpl-3.0.html

import functools
import inspect
import logging
import re
from asyncio import Event
from typing import List

from aiogram.types import CallbackQuery, ChosenInlineResult
from aiogram.types import InlineQuery as AiogramInlineQuery
from aiogram.types import (
    InlineQueryResultArticle,
    InlineQueryResultDocument,
    InlineQueryResultGif,
    InlineQueryResultPhoto,
    InlineQueryResultVideo,
    InputTextMessageContent,
)
from aiogram.types import Message as AiogramMessage

from .. import utils
from .types import InlineCall, InlineQuery, InlineUnit, BotInlineCall

logger = logging.getLogger(__name__)


class Events(InlineUnit):
    async def _message_handler(self, message: AiogramMessage):
        """Processes incoming messages"""
        if message.chat.type != "private":
            return

        for mod in self._allmodules.modules:
            if not hasattr(mod, "aiogram_watcher"):
                continue

            setattr(
                message,
                "answer",
                functools.partial(
                    self._bot_message_answer,
                    message=message,
                ),
            )

            try:
                await mod.aiogram_watcher(message)
            except BaseException:
                logger.exception("Error on running aiogram watcher!")

    async def _inline_handler(self, inline_query: AiogramInlineQuery):
        """Inline query handler (forms' calls)"""
        # Retrieve query from passed object
        query = inline_query.query

        # If we didn't get any query, return help
        if not query:
            await self._query_help(inline_query)
            return

        # First, dispatch all registered inline handlers
        cmd = inline_query.query.split()[0].lower()
        if (
            cmd in self._allmodules.inline_handlers
            and await self.check_inline_security(
                func=self._allmodules.inline_handlers[cmd],
                user=inline_query.from_user.id,
            )
        ):
            instance = InlineQuery(inline_query)

            try:
                result = await self._allmodules.inline_handlers[cmd](instance)
            except BaseException:
                logger.exception("Error on running inline watcher!")
                return

            if not result:
                return

            if isinstance(result, dict):
                result = [result]

            if not isinstance(result, list):
                logger.error(
                    "Got invalid type from inline handler. It must be `dict`, got"
                    f" `{type(result)}`"
                )
                await instance.e500()
                return

            for res in result:
                mandatory = {"message", "photo", "gif", "video", "file"}
                if all(item not in res for item in mandatory):
                    logger.error(
                        "Got invalid type from inline handler. It must contain one of"
                        f" `{mandatory}`"
                    )
                    await instance.e500()
                    return

                if "file" in res and "mime_type" not in res:
                    logger.error(
                        "Got invalid type from inline handler. It contains field"
                        " `file`, so it must contain `mime_type` as well"
                    )

            inline_result = []

            for res in result:
                if "message" in res:
                    inline_result += [
                        InlineQueryResultArticle(
                            id=utils.rand(20),
                            title=res["title"],
                            description=res.get("description"),
                            input_message_content=InputTextMessageContent(
                                res["message"],
                                "HTML",
                                disable_web_page_preview=True,
                            ),
                            thumb_url=res.get("thumb"),
                            thumb_width=128,
                            thumb_height=128,
                            reply_markup=self.generate_markup(res.get("reply_markup")),
                        )
                    ]
                elif "photo" in res:
                    inline_result += [
                        InlineQueryResultPhoto(
                            id=utils.rand(20),
                            title=res.get("title"),
                            description=res.get("description"),
                            caption=res.get("caption"),
                            parse_mode="HTML",
                            thumb_url=res.get("thumb", res["photo"]),
                            photo_url=res["photo"],
                            reply_markup=self.generate_markup(res.get("reply_markup")),
                        )
                    ]
                elif "gif" in res:
                    inline_result += [
                        InlineQueryResultGif(
                            id=utils.rand(20),
                            title=res.get("title"),
                            caption=res.get("caption"),
                            parse_mode="HTML",
                            thumb_url=res.get("thumb", res["gif"]),
                            gif_url=res["gif"],
                            reply_markup=self.generate_markup(res.get("reply_markup")),
                        )
                    ]
                elif "video" in res:
                    inline_result += [
                        InlineQueryResultVideo(
                            id=utils.rand(20),
                            title=res.get("title"),
                            description=res.get("description"),
                            caption=res.get("caption"),
                            parse_mode="HTML",
                            thumb_url=res.get("thumb", res["video"]),
                            video_url=res["video"],
                            mime_type="video/mp4",
                            reply_markup=self.generate_markup(res.get("reply_markup")),
                        )
                    ]
                elif "file" in res:
                    inline_result += [
                        InlineQueryResultDocument(
                            id=utils.rand(20),
                            title=res.get("title"),
                            description=res.get("description"),
                            caption=res.get("caption"),
                            parse_mode="HTML",
                            thumb_url=res.get("thumb", res["file"]),
                            document_url=res["file"],
                            mime_type=res["mime_type"],
                            reply_markup=self.generate_markup(res.get("reply_markup")),
                        )
                    ]

            try:
                await inline_query.answer(inline_result, cache_time=0)
            except Exception:
                logger.exception(
                    f"Exception when answering inline query with result from {cmd}"
                )
                return

        await self._form_inline_handler(inline_query)
        await self._gallery_inline_handler(inline_query)
        await self._list_inline_handler(inline_query)

    async def _callback_query_handler(
        self,
        call: CallbackQuery,
        reply_markup: List[List[dict]] = None,
    ):
        """Callback query handler (buttons' presses)"""
        if reply_markup is None:
            reply_markup = []

        if re.search(r"authorize_web_(.{8})", call.data):
            self._web_auth_tokens += [re.search(r"authorize_web_(.{8})", call.data)[1]]
            return

        # First, dispatch all registered callback handlers
        for func in self._allmodules.callback_handlers.values():
            if await self.check_inline_security(func=func, user=call.from_user.id):
                try:
                    await func(
                        (
                            BotInlineCall
                            if getattr(getattr(call, "message", None), "chat", None)
                            else InlineCall
                        )(call, self, None)
                    )
                except Exception:
                    logger.exception("Error on running callback watcher!")
                    await call.answer(
                        "Error occured while processing request. More info in logs",
                        show_alert=True,
                    )
                    continue

        for unit_id, unit in self._units.copy().items():
            for button in utils.array_sum(unit.get("buttons", [])):
                if not isinstance(button, dict):
                    logger.warning(
                        f"Can't process update, because of corrupted button: {button}"
                    )
                    continue

                if button.get("_callback_data") == call.data:
                    if (
                        button.get("disable_security", False)
                        or unit.get("disable_security", False)
                        or (
                            unit.get("force_me", False)
                            and call.from_user.id == self._me
                        )
                        or not unit.get("force_me", False)
                        and (
                            await self.check_inline_security(
                                func=unit.get(
                                    "perms_map",
                                    lambda: self._client.dispatcher.security._default,
                                )(),  # we call it so we can get reloaded rights in runtime
                                user=call.from_user.id,
                            )
                            if "message" in unit
                            else False
                        )
                    ):
                        pass
                    elif (
                        call.from_user.id
                        not in self._client.dispatcher.security._owner
                        + unit.get("always_allow", [])
                        + button.get("always_allow", [])
                    ):
                        await call.answer("You are not allowed to press this button!")
                        return

                    try:
                        result = await button["callback"](
                            (
                                BotInlineCall
                                if getattr(getattr(call, "message", None), "chat", None)
                                else InlineCall
                            )(call, self, unit_id),
                            *button.get("args", []),
                            **button.get("kwargs", {}),
                        )
                    except Exception:
                        logger.exception("Error on running callback watcher!")
                        await call.answer(
                            "Error occurred while "
                            "processing request. "
                            "More info in logs",
                            show_alert=True,
                        )
                        return

                    return result

        if call.data in self._custom_map:
            if (
                self._custom_map[call.data].get("disable_security", False)
                or (
                    self._custom_map[call.data].get("force_me", False)
                    and call.from_user.id == self._me
                )
                or not self._custom_map[call.data].get("force_me", False)
                and (
                    await self.check_inline_security(
                        func=self._custom_map[call.data].get(
                            "perms_map",
                            lambda: self._client.dispatcher.security._default,
                        )(),
                        user=call.from_user.id,
                    )
                    if "message" in self._custom_map[call.data]
                    else False
                )
            ):
                pass
            elif (
                call.from_user.id not in self._client.dispatcher.security._owner
                and call.from_user.id
                not in self._custom_map[call.data].get("always_allow", [])
            ):
                await call.answer("You are not allowed to press this button!")
                return

            await self._custom_map[call.data]["handler"](
                (
                    BotInlineCall
                    if getattr(getattr(call, "message", None), "chat", None)
                    else InlineCall
                )(call, self, None),
                *self._custom_map[call.data].get("args", []),
                **self._custom_map[call.data].get("kwargs", {}),
            )
            return

    async def _chosen_inline_handler(
        self,
        chosen_inline_query: ChosenInlineResult,
    ):
        query = chosen_inline_query.query

        if not query:
            return

        for unit_id, unit in self._units.items():
            if (
                unit_id == query
                and "future" in unit
                and isinstance(unit["future"], Event)
            ):
                unit["inline_message_id"] = chosen_inline_query.inline_message_id
                unit["future"].set()
                return

        for unit_id, unit in self._units.copy().items():
            for button in utils.array_sum(unit.get("buttons", [])):
                if (
                    "_switch_query" in button
                    and "input" in button
                    and button["_switch_query"] == query.split()[0]
                    and chosen_inline_query.from_user.id
                    in [self._me]
                    + self._client.dispatcher.security._owner
                    + unit.get("always_allow", [])
                ):

                    query = query.split(maxsplit=1)[1] if len(query.split()) > 1 else ""

                    try:
                        return await button["handler"](
                            InlineCall(chosen_inline_query, self, unit_id),
                            query,
                            *button.get("args", []),
                            **button.get("kwargs", {}),
                        )
                    except Exception:
                        logger.exception(
                            "Exception while running chosen query watcher!"
                        )
                        return

    async def _query_help(self, inline_query: InlineQuery):
        _help = ""
        for name, fun in self._allmodules.inline_handlers.items():
            # If user doesn't have enough permissions
            # to run this inline command, do not show it
            # in help
            if not await self.check_inline_security(
                func=fun,
                user=inline_query.from_user.id,
            ):
                continue

            # Retrieve docs from func
            try:
                doc = utils.escape_html(inspect.getdoc(fun))
            except Exception:
                doc = "🦥 No docs"

            _help += f"🎹 <code>@{self.bot_username} {name}</code> - {doc}\n"

        if not _help:
            await inline_query.answer(
                [
                    InlineQueryResultArticle(
                        id=utils.rand(20),
                        title="Show available inline commands",
                        description="You have no available commands",
                        input_message_content=InputTextMessageContent(
                            "<b>😔 There are no available inline commands or you lack"
                            " access to them</b>",
                            "HTML",
                            disable_web_page_preview=True,
                        ),
                        thumb_url=(
                            "https://img.icons8.com/fluency/50/000000/info-squared.png"
                        ),
                        thumb_width=128,
                        thumb_height=128,
                    )
                ],
                cache_time=0,
            )
            return

        await inline_query.answer(
            [
                InlineQueryResultArticle(
                    id=utils.rand(20),
                    title="Show available inline commands",
                    description=(
                        f"You have {len(_help.splitlines())} available command(-s)"
                    ),
                    input_message_content=InputTextMessageContent(
                        f"<b>ℹ️ Available inline commands:</b>\n\n{_help}",
                        "HTML",
                        disable_web_page_preview=True,
                    ),
                    thumb_url=(
                        "https://img.icons8.com/fluency/50/000000/info-squared.png"
                    ),
                    thumb_width=128,
                    thumb_height=128,
                )
            ],
            cache_time=0,
        )