""" Utilities for working with the Telegram API itself (such as handy methods to convert between an entity like an User, Chat, etc. into its Input version) """ import math import mimetypes import os import re import types from collections import UserList from mimetypes import guess_extension from .tl.types import ( Channel, ChannelForbidden, Chat, ChatEmpty, ChatForbidden, ChatFull, ChatPhoto, InputPeerChannel, InputPeerChat, InputPeerUser, InputPeerEmpty, MessageMediaDocument, MessageMediaPhoto, PeerChannel, InputChannel, UserEmpty, InputUser, InputUserEmpty, InputUserSelf, InputPeerSelf, PeerChat, PeerUser, User, UserFull, UserProfilePhoto, Document, MessageMediaContact, MessageMediaEmpty, MessageMediaGame, MessageMediaGeo, MessageMediaUnsupported, MessageMediaVenue, InputMediaContact, InputMediaDocument, InputMediaEmpty, InputMediaGame, InputMediaGeoPoint, InputMediaPhoto, InputMediaVenue, InputDocument, DocumentEmpty, InputDocumentEmpty, Message, GeoPoint, InputGeoPoint, GeoPointEmpty, InputGeoPointEmpty, Photo, InputPhoto, PhotoEmpty, InputPhotoEmpty, FileLocation, ChatPhotoEmpty, UserProfilePhotoEmpty, FileLocationUnavailable, InputMediaUploadedDocument, ChannelFull, InputMediaUploadedPhoto, DocumentAttributeFilename, photos, TopPeer, InputNotifyPeer ) from .tl.types.contacts import ResolvedPeer USERNAME_RE = re.compile( r'@|(?:https?://)?(?:www\.)?(?:telegram\.(?:me|dog)|t\.me)/(joinchat/)?' ) VALID_USERNAME_RE = re.compile(r'^[a-zA-Z][\w\d]{3,30}[a-zA-Z\d]$') def get_display_name(entity): """ Gets the display name for the given entity, if it's an :tl:`User`, :tl:`Chat` or :tl:`Channel`. Returns an empty string otherwise. """ if isinstance(entity, User): if entity.last_name and entity.first_name: return '{} {}'.format(entity.first_name, entity.last_name) elif entity.first_name: return entity.first_name elif entity.last_name: return entity.last_name else: return '' elif isinstance(entity, (Chat, Channel)): return entity.title return '' def get_extension(media): """Gets the corresponding extension for any Telegram media.""" # Photos are always compressed as .jpg by Telegram if isinstance(media, (UserProfilePhoto, ChatPhoto, MessageMediaPhoto)): return '.jpg' # Documents will come with a mime type if isinstance(media, MessageMediaDocument): media = media.document if isinstance(media, Document): if media.mime_type == 'application/octet-stream': # Octet stream are just bytes, which have no default extension return '' else: return guess_extension(media.mime_type) or '' return '' def _raise_cast_fail(entity, target): raise TypeError('Cannot cast {} to any kind of {}.'.format( type(entity).__name__, target)) def get_input_peer(entity, allow_self=True): """ Gets the input peer for the given "entity" (user, chat or channel). A ``TypeError`` is raised if the given entity isn't a supported type. """ try: if entity.SUBCLASS_OF_ID == 0xc91c90b6: # crc32(b'InputPeer') return entity except AttributeError: # e.g. custom.Dialog (can't cyclic import). if allow_self and hasattr(entity, 'input_entity'): return entity.input_entity elif hasattr(entity, 'entity'): return get_input_peer(entity.entity) else: _raise_cast_fail(entity, 'InputPeer') if isinstance(entity, User): if entity.is_self and allow_self: return InputPeerSelf() else: return InputPeerUser(entity.id, entity.access_hash or 0) if isinstance(entity, (Chat, ChatEmpty, ChatForbidden)): return InputPeerChat(entity.id) if isinstance(entity, (Channel, ChannelForbidden)): return InputPeerChannel(entity.id, entity.access_hash or 0) if isinstance(entity, InputUser): return InputPeerUser(entity.user_id, entity.access_hash) if isinstance(entity, InputChannel): return InputPeerChannel(entity.channel_id, entity.access_hash) if isinstance(entity, InputUserSelf): return InputPeerSelf() if isinstance(entity, UserEmpty): return InputPeerEmpty() if isinstance(entity, UserFull): return get_input_peer(entity.user) if isinstance(entity, ChatFull): return InputPeerChat(entity.id) if isinstance(entity, PeerChat): return InputPeerChat(entity.chat_id) _raise_cast_fail(entity, 'InputPeer') def get_input_channel(entity): """Similar to :meth:`get_input_peer`, but for :tl:`InputChannel`'s alone.""" try: if entity.SUBCLASS_OF_ID == 0x40f202fd: # crc32(b'InputChannel') return entity except AttributeError: _raise_cast_fail(entity, 'InputChannel') if isinstance(entity, (Channel, ChannelForbidden)): return InputChannel(entity.id, entity.access_hash or 0) if isinstance(entity, InputPeerChannel): return InputChannel(entity.channel_id, entity.access_hash) _raise_cast_fail(entity, 'InputChannel') def get_input_user(entity): """Similar to :meth:`get_input_peer`, but for :tl:`InputUser`'s alone.""" try: if entity.SUBCLASS_OF_ID == 0xe669bf46: # crc32(b'InputUser'): return entity except AttributeError: _raise_cast_fail(entity, 'InputUser') if isinstance(entity, User): if entity.is_self: return InputUserSelf() else: return InputUser(entity.id, entity.access_hash or 0) if isinstance(entity, InputPeerSelf): return InputUserSelf() if isinstance(entity, (UserEmpty, InputPeerEmpty)): return InputUserEmpty() if isinstance(entity, UserFull): return get_input_user(entity.user) if isinstance(entity, InputPeerUser): return InputUser(entity.user_id, entity.access_hash) _raise_cast_fail(entity, 'InputUser') def get_input_document(document): """Similar to :meth:`get_input_peer`, but for documents""" try: if document.SUBCLASS_OF_ID == 0xf33fdb68: # crc32(b'InputDocument'): return document except AttributeError: _raise_cast_fail(document, 'InputDocument') if isinstance(document, Document): return InputDocument(id=document.id, access_hash=document.access_hash) if isinstance(document, DocumentEmpty): return InputDocumentEmpty() if isinstance(document, MessageMediaDocument): return get_input_document(document.document) if isinstance(document, Message): return get_input_document(document.media) _raise_cast_fail(document, 'InputDocument') def get_input_photo(photo): """Similar to :meth:`get_input_peer`, but for photos""" try: if photo.SUBCLASS_OF_ID == 0x846363e0: # crc32(b'InputPhoto'): return photo except AttributeError: _raise_cast_fail(photo, 'InputPhoto') if isinstance(photo, photos.Photo): photo = photo.photo if isinstance(photo, Photo): return InputPhoto(id=photo.id, access_hash=photo.access_hash) if isinstance(photo, PhotoEmpty): return InputPhotoEmpty() _raise_cast_fail(photo, 'InputPhoto') def get_input_geo(geo): """Similar to :meth:`get_input_peer`, but for geo points""" try: if geo.SUBCLASS_OF_ID == 0x430d225: # crc32(b'InputGeoPoint'): return geo except AttributeError: _raise_cast_fail(geo, 'InputGeoPoint') if isinstance(geo, GeoPoint): return InputGeoPoint(lat=geo.lat, long=geo.long) if isinstance(geo, GeoPointEmpty): return InputGeoPointEmpty() if isinstance(geo, MessageMediaGeo): return get_input_geo(geo.geo) if isinstance(geo, Message): return get_input_geo(geo.media) _raise_cast_fail(geo, 'InputGeoPoint') def get_input_media(media, is_photo=False): """ Similar to :meth:`get_input_peer`, but for media. If the media is a file location and ``is_photo`` is known to be ``True``, it will be treated as an :tl:`InputMediaUploadedPhoto`. """ try: if media.SUBCLASS_OF_ID == 0xfaf846f4: # crc32(b'InputMedia'): return media except AttributeError: _raise_cast_fail(media, 'InputMedia') if isinstance(media, MessageMediaPhoto): return InputMediaPhoto( id=get_input_photo(media.photo), ttl_seconds=media.ttl_seconds ) if isinstance(media, (Photo, photos.Photo, PhotoEmpty)): return InputMediaPhoto( id=get_input_photo(media) ) if isinstance(media, MessageMediaDocument): return InputMediaDocument( id=get_input_document(media.document), ttl_seconds=media.ttl_seconds ) if isinstance(media, (Document, DocumentEmpty)): return InputMediaDocument( id=get_input_document(media) ) if isinstance(media, FileLocation): if is_photo: return InputMediaUploadedPhoto(file=media) else: return InputMediaUploadedDocument( file=media, mime_type='application/octet-stream', # unknown, assume bytes attributes=[DocumentAttributeFilename('unnamed')] ) if isinstance(media, MessageMediaGame): return InputMediaGame(id=media.game.id) if isinstance(media, (ChatPhoto, UserProfilePhoto)): if isinstance(media.photo_big, FileLocationUnavailable): media = media.photo_small else: media = media.photo_big return get_input_media(media, is_photo=True) if isinstance(media, MessageMediaContact): return InputMediaContact( phone_number=media.phone_number, first_name=media.first_name, last_name=media.last_name ) if isinstance(media, MessageMediaGeo): return InputMediaGeoPoint(geo_point=get_input_geo(media.geo)) if isinstance(media, MessageMediaVenue): return InputMediaVenue( geo_point=get_input_geo(media.geo), title=media.title, address=media.address, provider=media.provider, venue_id=media.venue_id, venue_type='' ) if isinstance(media, ( MessageMediaEmpty, MessageMediaUnsupported, ChatPhotoEmpty, UserProfilePhotoEmpty, FileLocationUnavailable)): return InputMediaEmpty() if isinstance(media, Message): return get_input_media(media.media, is_photo=is_photo) _raise_cast_fail(media, 'InputMedia') def is_image(file): """ Returns ``True`` if the file extension looks like an image file to Telegram. """ if not isinstance(file, str): return False _, ext = os.path.splitext(file) return re.match(r'\.(png|jpe?g)', ext, re.IGNORECASE) def is_audio(file): """Returns ``True`` if the file extension looks like an audio file.""" return (isinstance(file, str) and (mimetypes.guess_type(file)[0] or '').startswith('audio/')) def is_video(file): """Returns ``True`` if the file extension looks like a video file.""" return (isinstance(file, str) and (mimetypes.guess_type(file)[0] or '').startswith('video/')) def is_list_like(obj): """ Returns ``True`` if the given object looks like a list. Checking ``if hasattr(obj, '__iter__')`` and ignoring ``str/bytes`` is not enough. Things like ``open()`` are also iterable (and probably many other things), so just support the commonly known list-like objects. """ return isinstance(obj, (list, tuple, set, dict, UserList, types.GeneratorType)) def parse_phone(phone): """Parses the given phone, or returns ``None`` if it's invalid.""" if isinstance(phone, int): return str(phone) else: phone = re.sub(r'[+()\s-]', '', str(phone)) if phone.isdigit(): return phone def parse_username(username): """Parses the given username or channel access hash, given a string, username or URL. Returns a tuple consisting of both the stripped, lowercase username and whether it is a joinchat/ hash (in which case is not lowercase'd). Returns ``None`` if the ``username`` is not valid. """ username = username.strip() m = USERNAME_RE.match(username) if m: username = username[m.end():] is_invite = bool(m.group(1)) if is_invite: return username, True else: username = username.rstrip('/') if VALID_USERNAME_RE.match(username): return username.lower(), False else: return None, False def _fix_peer_id(peer_id): """ Fixes the peer ID for chats and channels, in case the users mix marking the ID with the :tl:`Peer` constructors. """ peer_id = abs(peer_id) if str(peer_id).startswith('100'): peer_id = str(peer_id)[3:] return int(peer_id) def get_peer_id(peer): """ Finds the ID of the given peer, and converts it to the "bot api" format so it the peer can be identified back. User ID is left unmodified, chat ID is negated, and channel ID is prefixed with -100. The original ID and the peer type class can be returned with a call to :meth:`resolve_id(marked_id)`. """ # First we assert it's a Peer TLObject, or early return for integers if isinstance(peer, int): return peer try: if peer.SUBCLASS_OF_ID not in (0x2d45687, 0xc91c90b6): if isinstance(peer, (ResolvedPeer, InputNotifyPeer, TopPeer)): peer = peer.peer else: # Not a Peer or an InputPeer, so first get its Input version peer = get_input_peer(peer, allow_self=False) except AttributeError: _raise_cast_fail(peer, 'int') # Set the right ID/kind, or raise if the TLObject is not recognised if isinstance(peer, (PeerUser, InputPeerUser)): return peer.user_id elif isinstance(peer, (PeerChat, InputPeerChat)): # Check in case the user mixed things up to avoid blowing up if not (0 < peer.chat_id <= 0x7fffffff): peer.chat_id = _fix_peer_id(peer.chat_id) return -peer.chat_id elif isinstance(peer, (PeerChannel, InputPeerChannel, ChannelFull)): if isinstance(peer, ChannelFull): # Special case: .get_input_peer can't return InputChannel from # ChannelFull since it doesn't have an .access_hash attribute. i = peer.id else: i = peer.channel_id # Check in case the user mixed things up to avoid blowing up if not (0 < i <= 0x7fffffff): i = _fix_peer_id(i) if isinstance(peer, ChannelFull): peer.id = i else: peer.channel_id = i # Concat -100 through math tricks, .to_supergroup() on Madeline # IDs will be strictly positive -> log works return -(i + pow(10, math.floor(math.log10(i) + 3))) _raise_cast_fail(peer, 'int') def resolve_id(marked_id): """Given a marked ID, returns the original ID and its :tl:`Peer` type.""" if marked_id >= 0: return marked_id, PeerUser if str(marked_id).startswith('-100'): return int(str(marked_id)[4:]), PeerChannel return -marked_id, PeerChat def get_appropriated_part_size(file_size): """ Gets the appropriated part size when uploading or downloading files, given an initial file size. """ if file_size <= 104857600: # 100MB return 128 if file_size <= 786432000: # 750MB return 256 if file_size <= 1572864000: # 1500MB return 512 raise ValueError('File size too large')