MTPyroger/pyrogram/client/methods/messages/send_media_group.py

# Pyrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-2019 Dan Tès <https://github.com/delivrance>
#
# This file is part of Pyrogram.
#
# Pyrogram is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pyrogram 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 General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.

import binascii
import mimetypes
import os
import struct
from typing import Union, List

import pyrogram
from pyrogram.api import functions, types
from pyrogram.api.errors import FileIdInvalid
from pyrogram.client.ext import BaseClient, utils


class SendMediaGroup(BaseClient):
    # TODO: Add progress parameter
    # TODO: Return new Message object
    # TODO: Figure out how to send albums using URLs
    async def send_media_group(self,
                               chat_id: Union[int, str],
                               media: List[Union["pyrogram.InputMediaPhoto", "pyrogram.InputMediaVideo"]],
                               disable_notification: bool = None,
                               reply_to_message_id: int = None):
        """Use this method to send a group of photos or videos as an album.
        On success, an Update containing the sent Messages is returned.

        Args:
            chat_id (``int`` | ``str``):
                Unique identifier (int) or username (str) of the target chat.
                For your personal cloud (Saved Messages) you can simply use "me" or "self".
                For a contact that exists in your Telegram address book you can use his phone number (str).

            media (``list``):
                A list containing either :obj:`InputMediaPhoto <pyrogram.InputMediaPhoto>` or
                :obj:`InputMediaVideo <pyrogram.InputMediaVideo>` objects
                describing photos and videos to be sent, must include 2–10 items.

            disable_notification (``bool``, *optional*):
                Sends the message silently.
                Users will receive a notification with no sound.

            reply_to_message_id (``int``, *optional*):
                If the message is a reply, ID of the original message.
        """
        multi_media = []

        for i in media:
            style = self.html if i.parse_mode.lower() == "html" else self.markdown

            if isinstance(i, pyrogram.InputMediaPhoto):
                if os.path.exists(i.media):
                    media = await self.send(
                        functions.messages.UploadMedia(
                            peer=await self.resolve_peer(chat_id),
                            media=types.InputMediaUploadedPhoto(
                                file=await self.save_file(i.media)
                            )
                        )
                    )

                    media = types.InputMediaPhoto(
                        id=types.InputPhoto(
                            id=media.photo.id,
                            access_hash=media.photo.access_hash,
                            file_reference=b""
                        )
                    )
                else:
                    try:
                        decoded = utils.decode(i.media)
                        fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                        unpacked = struct.unpack(fmt, decoded)
                    except (AssertionError, binascii.Error, struct.error):
                        raise FileIdInvalid from None
                    else:
                        if unpacked[0] != 2:
                            media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                            if media_type:
                                raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                            else:
                                raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                        media = types.InputMediaPhoto(
                            id=types.InputPhoto(
                                id=unpacked[2],
                                access_hash=unpacked[3],
                                file_reference=b""
                            )
                        )
            elif isinstance(i, pyrogram.InputMediaVideo):
                if os.path.exists(i.media):
                    media = await self.send(
                        functions.messages.UploadMedia(
                            peer=await self.resolve_peer(chat_id),
                            media=types.InputMediaUploadedDocument(
                                file=await self.save_file(i.media),
                                thumb=None if i.thumb is None else self.save_file(i.thumb),
                                mime_type=mimetypes.types_map[".mp4"],
                                attributes=[
                                    types.DocumentAttributeVideo(
                                        supports_streaming=i.supports_streaming or None,
                                        duration=i.duration,
                                        w=i.width,
                                        h=i.height
                                    ),
                                    types.DocumentAttributeFilename(os.path.basename(i.media))
                                ]
                            )
                        )
                    )

                    media = types.InputMediaDocument(
                        id=types.InputDocument(
                            id=media.document.id,
                            access_hash=media.document.access_hash,
                            file_reference=b""
                        )
                    )
                else:
                    try:
                        decoded = utils.decode(i.media)
                        fmt = "<iiqqqqi" if len(decoded) > 24 else "<iiqq"
                        unpacked = struct.unpack(fmt, decoded)
                    except (AssertionError, binascii.Error, struct.error):
                        raise FileIdInvalid from None
                    else:
                        if unpacked[0] != 4:
                            media_type = BaseClient.MEDIA_TYPE_ID.get(unpacked[0], None)

                            if media_type:
                                raise FileIdInvalid("The file_id belongs to a {}".format(media_type))
                            else:
                                raise FileIdInvalid("Unknown media type: {}".format(unpacked[0]))

                        media = types.InputMediaDocument(
                            id=types.InputDocument(
                                id=unpacked[2],
                                access_hash=unpacked[3],
                                file_reference=b""
                            )
                        )

            multi_media.append(
                types.InputSingleMedia(
                    media=media,
                    random_id=self.rnd_id(),
                    **style.parse(i.caption)
                )
            )

        return await self.send(
            functions.messages.SendMultiMedia(
                peer=await self.resolve_peer(chat_id),
                multi_media=multi_media,
                silent=disable_notification or None,
                reply_to_msg_id=reply_to_message_id
            )
        )