#  Moon-Userbot - telegram userbot
#  Copyright (C) 2020-present Moon Userbot Organization
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General 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 General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <https://www.gnu.org/licenses/>.

from pyrogram import Client, ContinuePropagation, errors, filters
from pyrogram.types import (
    InputMediaAudio,
    InputMediaDocument,
    InputMediaPhoto,
    InputMediaVideo,
    Message,
)
from utils.db import db
from utils.misc import modules_help, prefix
from utils.scripts import format_exc


def get_filters_chat(chat_id):
    return db.get('core.filters', f'{chat_id}', {})


def set_filters_chat(chat_id, filters_):
    return db.set('core.filters', f'{chat_id}', filters_)


async def contains_filter(_, __, m):
    return m.text and m.text.lower() in get_filters_chat(m.chat.id).keys()


contains = filters.create(contains_filter)


# noinspection PyTypeChecker
@Client.on_message(contains)
async def filters_main_handler(client: Client, message: Message):
    value = get_filters_chat(message.chat.id)[message.text.lower()]
    try:
        await client.get_messages(int(value['CHAT_ID']), int(value['MESSAGE_ID']))
    except errors.RPCError as exc:
        raise ContinuePropagation from exc

    if value.get('MEDIA_GROUP'):
        messages_grouped = await client.get_media_group(int(value['CHAT_ID']), int(value['MESSAGE_ID']))
        media_grouped_list = []
        for _ in messages_grouped:
            if _.photo:
                if _.caption:
                    media_grouped_list.append(InputMediaPhoto(_.photo.file_id, _.caption.HTML))
                else:
                    media_grouped_list.append(InputMediaPhoto(_.photo.file_id))
            elif _.video:
                if _.caption:
                    if _.video.thumbs:
                        media_grouped_list.append(
                            InputMediaVideo(
                                _.video.file_id,
                                _.video.thumbs[0].file_id,
                                _.caption.HTML,
                            )
                        )
                    else:
                        media_grouped_list.append(InputMediaVideo(_.video.file_id, _.caption.HTML))
                elif _.video.thumbs:
                    media_grouped_list.append(InputMediaVideo(_.video.file_id, _.video.thumbs[0].file_id))
                else:
                    media_grouped_list.append(InputMediaVideo(_.video.file_id))
            elif _.audio:
                if _.caption:
                    media_grouped_list.append(InputMediaAudio(_.audio.file_id, _.caption.HTML))
                else:
                    media_grouped_list.append(InputMediaAudio(_.audio.file_id))
            elif _.document:
                if _.caption:
                    if _.document.thumbs:
                        media_grouped_list.append(
                            InputMediaDocument(
                                _.document.file_id,
                                _.document.thumbs[0].file_id,
                                _.caption.HTML,
                            )
                        )
                    else:
                        media_grouped_list.append(InputMediaDocument(_.document.file_id, _.caption.HTML))
                elif _.document.thumbs:
                    media_grouped_list.append(InputMediaDocument(_.document.file_id, _.document.thumbs[0].file_id))
                else:
                    media_grouped_list.append(InputMediaDocument(_.document.file_id))
        await client.send_media_group(message.chat.id, media_grouped_list, reply_to_message_id=message.id)
    else:
        await client.copy_message(
            message.chat.id,
            int(value['CHAT_ID']),
            int(value['MESSAGE_ID']),
            reply_to_message_id=message.id,
        )
    raise ContinuePropagation


@Client.on_message(filters.command(['filter'], prefix) & filters.me)
async def filter_handler(client: Client, message: Message):
    try:
        if len(message.text.split()) < 2:
            return await message.edit(f'<b>Usage</b>: <code>{prefix}filter [name] (Reply required)</code>')
        name = message.text.split(maxsplit=1)[1].lower()
        chat_filters = get_filters_chat(message.chat.id)
        if name in chat_filters.keys():
            return await message.edit(f'<b>Filter</b> <code>{name}</code> already exists.')
        if not message.reply_to_message:
            return await message.edit('<b>Reply to message</b> please.')

        try:
            chat = await client.get_chat(db.get('core.notes', 'chat_id', 0))
        except (errors.RPCError, ValueError, KeyError):
            # group is not accessible or isn't created
            chat = await client.create_supergroup('Userbot_Notes_Filters', "Don't touch this group, please")
            db.set('core.notes', 'chat_id', chat.id)

        chat_id = chat.id

        if message.reply_to_message.media_group_id:
            get_media_group = [_.id for _ in await client.get_media_group(message.chat.id, message.reply_to_message.id)]
            try:
                message_id = await client.forward_messages(chat_id, message.chat.id, get_media_group)
            except errors.ChatForwardsRestricted:
                await message.edit('<b>Forwarding messages is restricted by chat admins</b>')
                return
            filter_ = {
                'MESSAGE_ID': str(message_id[1].id),
                'MEDIA_GROUP': True,
                'CHAT_ID': str(chat_id),
            }
        else:
            try:
                message_id = await message.reply_to_message.forward(chat_id)
            except errors.ChatForwardsRestricted:
                message_id = await message.copy(chat_id)
            filter_ = {
                'MEDIA_GROUP': False,
                'MESSAGE_ID': str(message_id.id),
                'CHAT_ID': str(chat_id),
            }

        chat_filters.update({name: filter_})

        set_filters_chat(message.chat.id, chat_filters)
        return await message.edit(
            f'<b>Filter</b> <code>{name}</code> has been added.',
        )
    except Exception as e:
        return await message.edit(format_exc(e))


@Client.on_message(filters.command(['filters'], prefix) & filters.me)
async def filters_handler(_, message: Message):
    try:
        text = ''
        for index, a in enumerate(get_filters_chat(message.chat.id).items(), start=1):
            key, _ = a
            key = key.replace('<', '').replace('>', '')
            text += f'{index}. <code>{key}</code>\n'
        text = f'<b>Your filters in current chat</b>:\n\n{text}'
        text = text[:4096]
        return await message.edit(text)
    except Exception as e:
        return await message.edit(format_exc(e))


@Client.on_message(filters.command(['delfilter', 'filterdel', 'fdel'], prefix) & filters.me)
async def filter_del_handler(_, message: Message):
    try:
        if len(message.text.split()) < 2:
            return await message.edit(
                f'<b>Usage</b>: <code>{prefix}fdel [name]</code>',
            )
        name = message.text.split(maxsplit=1)[1].lower()
        chat_filters = get_filters_chat(message.chat.id)
        if name not in chat_filters.keys():
            return await message.edit(
                f"<b>Filter</b> <code>{name}</code> doesn't exists.",
            )
        del chat_filters[name]
        set_filters_chat(message.chat.id, chat_filters)
        return await message.edit(
            f'<b>Filter</b> <code>{name}</code> has been deleted.',
        )
    except Exception as e:
        return await message.edit(format_exc(e))


@Client.on_message(filters.command(['fsearch'], prefix) & filters.me)
async def filter_search_handler(_, message: Message):
    try:
        if len(message.text.split()) < 2:
            return await message.edit(
                f'<b>Usage</b>: <code>{prefix}fsearch [name]</code>',
            )
        name = message.text.split(maxsplit=1)[1].lower()
        chat_filters = get_filters_chat(message.chat.id)
        if name not in chat_filters.keys():
            return await message.edit(
                f"<b>Filter</b> <code>{name}</code> doesn't exists.",
            )
        return await message.edit(f'<b>Trigger</b>:\n<code>{name}</code>\n<b>Answer</b>:\n{chat_filters[name]}')
    except Exception as e:
        return await message.edit(format_exc(e))


modules_help['filters'] = {
    'filter [name]': 'Create filter (Reply required)',
    'filters': 'List of all triggers',
    'fdel [name]': 'Delete filter by name',
    'fsearch [name]': 'Info filter by name',
}