MTPyroger/pyrogram/client/client.py

# Pyrogram - Telegram MTProto API Client Library for Python
# Copyright (C) 2017-2018 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 base64
import binascii
import json
import logging
import math
import mimetypes
import os
import re
import shutil
import struct
import tempfile
import threading
import time
from configparser import ConfigParser
from datetime import datetime
from hashlib import sha256, md5
from queue import Queue
from signal import signal, SIGINT, SIGTERM, SIGABRT
from threading import Event, Thread

import pyrogram
from pyrogram.api import functions, types
from pyrogram.api.core import Object
from pyrogram.api.errors import (
    PhoneMigrate, NetworkMigrate, PhoneNumberInvalid,
    PhoneNumberUnoccupied, PhoneCodeInvalid, PhoneCodeHashEmpty,
    PhoneCodeExpired, PhoneCodeEmpty, SessionPasswordNeeded,
    PasswordHashInvalid, FloodWait, PeerIdInvalid, FilePartMissing,
    ChatAdminRequired, FirstnameInvalid, PhoneNumberBanned,
    VolumeLocNotFound, UserMigrate, FileIdInvalid)
from pyrogram.crypto import AES
from pyrogram.session import Auth, Session
from pyrogram.session.internals import MsgId
from . import message_parser
from . import utils
from .dispatcher import Dispatcher
from .input_media import InputMedia
from .style import Markdown, HTML
from .syncer import Syncer

log = logging.getLogger(__name__)


class Client:
    """This class represents a Client, the main mean for interacting with Telegram.
    It exposes bot-like methods for an easy access to the API as well as a simple way to
    invoke every single Telegram API method available.

    Args:
        session_name (``str``):
            Name to uniquely identify a session of either a User or a Bot.
            For Users: pass a string of your choice, e.g.: "my_main_account".
            For Bots: pass your Bot API token, e.g.: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11"
            Note: as long as a valid User session file exists, Pyrogram won't ask you again to input your phone number.

        api_id (``int``, optional):
            The *api_id* part of your Telegram API Key, as integer. E.g.: 12345
            This is an alternative way to pass it if you don't want to use the *config.ini* file.

        api_hash (``str``, optional):
            The *api_hash* part of your Telegram API Key, as string. E.g.: "0123456789abcdef0123456789abcdef"
            This is an alternative way to pass it if you don't want to use the *config.ini* file.

        proxy (``dict``, optional):
            Your SOCKS5 Proxy settings as dict,
            e.g.: *dict(hostname="11.22.33.44", port=1080, username="user", password="pass")*.
            *username* and *password* can be omitted if your proxy doesn't require authorization.
            This is an alternative way to setup a proxy if you don't want to use the *config.ini* file.

        test_mode (``bool``, optional):
            Enable or disable log-in to testing servers. Defaults to False.
            Only applicable for new sessions and will be ignored in case previously
            created sessions are loaded.

        phone_number (``str``, optional):
            Pass your phone number (with your Country Code prefix included) to avoid
            entering it manually. Only applicable for new sessions.

        phone_code (``str`` | ``callable``, optional):
            Pass the phone code as string (for test numbers only), or pass a callback function
            which must return the correct phone code as string (e.g., "12345").
            Only applicable for new sessions.

        password (``str``, optional):
            Pass your Two-Step Verification password (if you have one) to avoid entering it
            manually. Only applicable for new sessions.

        force_sms (``str``, optional):
            Pass True to force Telegram sending the authorization code via SMS.
            Only applicable for new sessions.

        first_name (``str``, optional):
            Pass a First Name to avoid entering it manually. It will be used to automatically
            create a new Telegram account in case the phone number you passed is not registered yet.
            Only applicable for new sessions.

        last_name (``str``, optional):
            Same purpose as *first_name*; pass a Last Name to avoid entering it manually. It can
            be an empty string: "". Only applicable for new sessions.

        workers (``int``, optional):
            Thread pool size for handling incoming updates. Defaults to 4.
    """

    INVITE_LINK_RE = re.compile(r"^(?:https?://)?(?:t\.me/joinchat/)([\w-]+)$")
    BOT_TOKEN_RE = re.compile(r"^\d+:[\w-]+$")
    DIALOGS_AT_ONCE = 100
    UPDATES_WORKERS = 1
    DOWNLOAD_WORKERS = 1
    OFFLINE_SLEEP = 300

    MEDIA_TYPE_ID = {
        0: "Thumbnail",
        2: "Photo",
        3: "Voice",
        4: "Video",
        5: "Document",
        8: "Sticker",
        9: "Audio",
        10: "GIF",
        13: "VideoNote"
    }

    def __init__(self,
                 session_name: str,
                 api_id: int or str = None,
                 api_hash: str = None,
                 proxy: dict = None,
                 test_mode: bool = False,
                 phone_number: str = None,
                 phone_code: str or callable = None,
                 password: str = None,
                 force_sms: bool = False,
                 first_name: str = None,
                 last_name: str = None,
                 workers: int = 4):
        self.session_name = session_name
        self.api_id = int(api_id) if api_id else None
        self.api_hash = api_hash
        self.proxy = proxy
        self.test_mode = test_mode

        self.phone_number = phone_number
        self.password = password
        self.phone_code = phone_code
        self.first_name = first_name
        self.last_name = last_name
        self.force_sms = force_sms

        self.workers = workers

        self.token = None

        self.dc_id = None
        self.auth_key = None
        self.user_id = None
        self.date = None

        self.rnd_id = MsgId

        self.peers_by_id = {}
        self.peers_by_username = {}
        self.peers_by_phone = {}

        self.channels_pts = {}

        self.markdown = Markdown(self.peers_by_id)
        self.html = HTML(self.peers_by_id)

        self.session = None

        self.is_started = None
        self.is_idle = None

        self.updates_queue = Queue()
        self.updates_workers_list = []
        self.download_queue = Queue()
        self.download_workers_list = []

        self.dispatcher = Dispatcher(self, workers)
        self.update_handler = None

    def on_message(self, filters=None, group: int = 0):
        """Use this decorator to automatically register a function for handling
        messages. This does the same thing as :meth:`add_handler` using the
        MessageHandler.

        Args:
            filters (:obj:`Filters <pyrogram.Filters>`):
                Pass one or more filters to allow only a subset of messages to be passed
                in your function.

            group (``int``, optional):
                The group identifier, defaults to 0.
        """

        def decorator(func):
            self.add_handler(pyrogram.MessageHandler(func, filters), group)
            return func

        return decorator

    def on_raw_update(self, group: int = 0):
        """Use this decorator to automatically register a function for handling
        raw updates. This does the same thing as :meth:`add_handler` using the
        RawUpdateHandler.

        Args:
            group (``int``, optional):
                The group identifier, defaults to 0.
        """

        def decorator(func):
            self.add_handler(pyrogram.RawUpdateHandler(func), group)
            return func

        return decorator

    def add_handler(self, handler, group: int = 0):
        """Use this method to register an event handler.

        You can register multiple handlers, but at most one handler within a group
        will be used for a single event. To handle the same event more than once, register
        your handler using a different group id (lower group id == higher priority).

        Args:
            handler (``Handler``):
                The handler to be registered.

            group (``int``, optional):
                The group identifier, defaults to 0.
        """
        self.dispatcher.add_handler(handler, group)

    def start(self):
        """Use this method to start the Client after creating it.
        Requires no parameters.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        if self.is_started:
            raise ConnectionError("Client has already been started")

        if self.BOT_TOKEN_RE.match(self.session_name):
            self.token = self.session_name
            self.session_name = self.session_name.split(":")[0]

        self.load_config()
        self.load_session()

        self.session = Session(
            self.dc_id,
            self.test_mode,
            self.proxy,
            self.auth_key,
            self.api_id,
            client=self
        )

        self.session.start()
        self.is_started = True

        if self.user_id is None:
            if self.token is None:
                self.authorize_user()
            else:
                self.authorize_bot()

            self.save_session()

        if self.token is None:
            now = time.time()

            if abs(now - self.date) > Client.OFFLINE_SLEEP:
                self.peers_by_username = {}
                self.peers_by_phone = {}

                self.get_dialogs()
                self.get_contacts()
            else:
                self.send(functions.messages.GetPinnedDialogs())
                self.get_dialogs_chunk(0)
        else:
            self.send(functions.updates.GetState())

        for i in range(self.UPDATES_WORKERS):
            self.updates_workers_list.append(
                Thread(
                    target=self.updates_worker,
                    name="UpdatesWorker#{}".format(i + 1)
                )
            )

            self.updates_workers_list[-1].start()

        for i in range(self.DOWNLOAD_WORKERS):
            self.download_workers_list.append(
                Thread(
                    target=self.download_worker,
                    name="DownloadWorker#{}".format(i + 1)
                )
            )

            self.download_workers_list[-1].start()

        self.dispatcher.start()

        mimetypes.init()
        Syncer.add(self)

    def stop(self):
        """Use this method to manually stop the Client.
        Requires no parameters.
        """
        if not self.is_started:
            raise ConnectionError("Client is already stopped")

        for _ in range(self.UPDATES_WORKERS):
            self.updates_queue.put(None)

        for i in self.updates_workers_list:
            i.join()

        for _ in range(self.DOWNLOAD_WORKERS):
            self.download_queue.put(None)

        for i in self.download_workers_list:
            i.join()

        self.dispatcher.stop()

        self.is_started = False
        self.session.stop()

        Syncer.remove(self)

    def authorize_bot(self):
        try:
            r = self.send(
                functions.auth.ImportBotAuthorization(
                    flags=0,
                    api_id=self.api_id,
                    api_hash=self.api_hash,
                    bot_auth_token=self.token
                )
            )
        except UserMigrate as e:
            self.session.stop()

            self.dc_id = e.x
            self.auth_key = Auth(self.dc_id, self.test_mode, self.proxy).create()

            self.session = Session(
                self.dc_id,
                self.test_mode,
                self.proxy,
                self.auth_key,
                self.api_id,
                client=self
            )

            self.session.start()
            self.authorize_bot()
        else:
            self.user_id = r.user.id

    def authorize_user(self):
        phone_number_invalid_raises = self.phone_number is not None
        phone_code_invalid_raises = self.phone_code is not None
        password_hash_invalid_raises = self.password is not None
        first_name_invalid_raises = self.first_name is not None

        while True:
            if self.phone_number is None:
                self.phone_number = input("Enter phone number: ")

                while True:
                    confirm = input("Is \"{}\" correct? (y/n): ".format(self.phone_number))

                    if confirm in ("y", "1"):
                        break
                    elif confirm in ("n", "2"):
                        self.phone_number = input("Enter phone number: ")

            self.phone_number = self.phone_number.strip("+")

            try:
                r = self.send(
                    functions.auth.SendCode(
                        self.phone_number,
                        self.api_id,
                        self.api_hash
                    )
                )
            except (PhoneMigrate, NetworkMigrate) as e:
                self.session.stop()

                self.dc_id = e.x
                self.auth_key = Auth(self.dc_id, self.test_mode, self.proxy).create()

                self.session = Session(
                    self.dc_id,
                    self.test_mode,
                    self.proxy,
                    self.auth_key,
                    self.api_id,
                    client=self
                )
                self.session.start()

                r = self.send(
                    functions.auth.SendCode(
                        self.phone_number,
                        self.api_id,
                        self.api_hash
                    )
                )
                break
            except (PhoneNumberInvalid, PhoneNumberBanned) as e:
                if phone_number_invalid_raises:
                    raise
                else:
                    print(e.MESSAGE)
                    self.phone_number = None
            except FloodWait as e:
                print(e.MESSAGE.format(x=e.x))
                time.sleep(e.x)
            except Exception as e:
                log.error(e, exc_info=True)
            else:
                break

        phone_registered = r.phone_registered
        phone_code_hash = r.phone_code_hash

        if self.force_sms:
            self.send(
                functions.auth.ResendCode(
                    phone_number=self.phone_number,
                    phone_code_hash=phone_code_hash
                )
            )

        while True:
            self.phone_code = (
                input("Enter phone code: ") if self.phone_code is None
                else self.phone_code if type(self.phone_code) is str
                else str(self.phone_code())
            )

            try:
                if phone_registered:
                    r = self.send(
                        functions.auth.SignIn(
                            self.phone_number,
                            phone_code_hash,
                            self.phone_code
                        )
                    )
                else:
                    try:
                        self.send(
                            functions.auth.SignIn(
                                self.phone_number,
                                phone_code_hash,
                                self.phone_code
                            )
                        )
                    except PhoneNumberUnoccupied:
                        pass

                    self.first_name = self.first_name if self.first_name is not None else input("First name: ")
                    self.last_name = self.last_name if self.last_name is not None else input("Last name: ")

                    r = self.send(
                        functions.auth.SignUp(
                            self.phone_number,
                            phone_code_hash,
                            self.phone_code,
                            self.first_name,
                            self.last_name
                        )
                    )
            except (PhoneCodeInvalid, PhoneCodeEmpty, PhoneCodeExpired, PhoneCodeHashEmpty) as e:
                if phone_code_invalid_raises:
                    raise
                else:
                    print(e.MESSAGE)
                    self.phone_code = None
            except FirstnameInvalid as e:
                if first_name_invalid_raises:
                    raise
                else:
                    print(e.MESSAGE)
                    self.first_name = None
            except SessionPasswordNeeded as e:
                print(e.MESSAGE)
                r = self.send(functions.account.GetPassword())

                while True:
                    try:

                        if self.password is None:
                            print("Hint: {}".format(r.hint))
                            self.password = input("Enter password: ")  # TODO: Use getpass

                        if type(self.password) is str:
                            self.password = r.current_salt + self.password.encode() + r.current_salt

                        password_hash = sha256(self.password).digest()

                        r = self.send(functions.auth.CheckPassword(password_hash))
                    except PasswordHashInvalid as e:
                        if password_hash_invalid_raises:
                            raise
                        else:
                            print(e.MESSAGE)
                            self.password = None
                    except FloodWait as e:
                        print(e.MESSAGE.format(x=e.x))
                        time.sleep(e.x)
                    except Exception as e:
                        log.error(e, exc_info=True)
                    else:
                        break
                break
            except FloodWait as e:
                print(e.MESSAGE.format(x=e.x))
                time.sleep(e.x)
            except Exception as e:
                log.error(e, exc_info=True)
            else:
                break

        self.password = None
        self.user_id = r.user.id

    def fetch_peers(self, entities: list):
        for entity in entities:
            if isinstance(entity, types.User):
                user_id = entity.id

                access_hash = entity.access_hash

                if access_hash is None:
                    continue

                username = entity.username
                phone = entity.phone

                input_peer = types.InputPeerUser(
                    user_id=user_id,
                    access_hash=access_hash
                )

                self.peers_by_id[user_id] = input_peer

                if username is not None:
                    self.peers_by_username[username.lower()] = input_peer

                if phone is not None:
                    self.peers_by_phone[phone] = input_peer

            if isinstance(entity, types.Chat):
                chat_id = entity.id
                peer_id = -chat_id

                input_peer = types.InputPeerChat(
                    chat_id=chat_id
                )

                self.peers_by_id[peer_id] = input_peer

            if isinstance(entity, types.Channel):
                channel_id = entity.id
                peer_id = int("-100" + str(channel_id))

                access_hash = entity.access_hash

                if access_hash is None:
                    continue

                username = entity.username

                input_peer = types.InputPeerChannel(
                    channel_id=channel_id,
                    access_hash=access_hash
                )

                self.peers_by_id[peer_id] = input_peer

                if username is not None:
                    self.peers_by_username[username.lower()] = input_peer

    def download_worker(self):
        name = threading.current_thread().name
        log.debug("{} started".format(name))

        while True:
            media = self.download_queue.get()
            temp_file_path = ""
            final_file_path = ""

            if media is None:
                break

            try:
                media, file_name, done, progress, path = media

                directory, file_name = os.path.split(file_name)
                directory = directory or "downloads"

                if isinstance(media, types.MessageMediaDocument):
                    document = media.document

                    if isinstance(document, types.Document):
                        if not file_name:
                            file_name = "doc_{}{}".format(
                                datetime.fromtimestamp(document.date).strftime("%Y-%m-%d_%H-%M-%S"),
                                ".txt" if document.mime_type == "text/plain" else
                                mimetypes.guess_extension(document.mime_type) if document.mime_type else ".unknown"
                            )

                            for i in document.attributes:
                                if isinstance(i, types.DocumentAttributeFilename):
                                    file_name = i.file_name
                                    break
                                elif isinstance(i, types.DocumentAttributeSticker):
                                    file_name = file_name.replace("doc", "sticker")
                                elif isinstance(i, types.DocumentAttributeAudio):
                                    file_name = file_name.replace("doc", "audio")
                                elif isinstance(i, types.DocumentAttributeVideo):
                                    file_name = file_name.replace("doc", "video")
                                elif isinstance(i, types.DocumentAttributeAnimated):
                                    file_name = file_name.replace("doc", "gif")

                        temp_file_path = self.get_file(
                            dc_id=document.dc_id,
                            id=document.id,
                            access_hash=document.access_hash,
                            version=document.version,
                            size=document.size,
                            progress=progress
                        )
                elif isinstance(media, (types.MessageMediaPhoto, types.Photo)):
                    if isinstance(media, types.MessageMediaPhoto):
                        photo = media.photo
                    else:
                        photo = media

                    if isinstance(photo, types.Photo):
                        if not file_name:
                            file_name = "photo_{}_{}.jpg".format(
                                datetime.fromtimestamp(photo.date).strftime("%Y-%m-%d_%H-%M-%S"),
                                self.rnd_id()
                            )

                        photo_loc = photo.sizes[-1].location

                        temp_file_path = self.get_file(
                            dc_id=photo_loc.dc_id,
                            volume_id=photo_loc.volume_id,
                            local_id=photo_loc.local_id,
                            secret=photo_loc.secret,
                            size=photo.sizes[-1].size,
                            progress=progress
                        )

                if temp_file_path:
                    final_file_path = os.path.abspath(re.sub("\\\\", "/", os.path.join(directory, file_name)))
                    os.makedirs(directory, exist_ok=True)
                    shutil.move(temp_file_path, final_file_path)
            except Exception as e:
                log.error(e, exc_info=True)

                try:
                    os.remove(temp_file_path)
                except OSError:
                    pass
            else:
                # TODO: "" or None for faulty download, which is better?
                # os.path methods return "" in case something does not exist, I prefer this.
                # For now let's keep None
                path[0] = final_file_path or None
            finally:
                done.set()

        log.debug("{} stopped".format(name))

    def updates_worker(self):
        name = threading.current_thread().name
        log.debug("{} started".format(name))

        while True:
            updates = self.updates_queue.get()

            if updates is None:
                break

            try:
                if isinstance(updates, (types.Update, types.UpdatesCombined)):
                    self.fetch_peers(updates.users)
                    self.fetch_peers(updates.chats)

                    for update in updates.updates:
                        channel_id = getattr(
                            getattr(
                                getattr(
                                    update, "message", None
                                ), "to_id", None
                            ), "channel_id", None
                        ) or getattr(update, "channel_id", None)

                        pts = getattr(update, "pts", None)
                        pts_count = getattr(update, "pts_count", None)

                        if isinstance(update, types.UpdateNewChannelMessage):
                            message = update.message

                            if not isinstance(message, types.MessageEmpty):
                                diff = self.send(
                                    functions.updates.GetChannelDifference(
                                        channel=self.resolve_peer(int("-100" + str(update.message.to_id.channel_id))),
                                        filter=types.ChannelMessagesFilter(
                                            ranges=[types.MessageRange(
                                                min_id=update.message.id,
                                                max_id=update.message.id
                                            )]
                                        ),
                                        pts=pts - pts_count,
                                        limit=pts
                                    )
                                )

                                if not isinstance(diff, types.updates.ChannelDifferenceEmpty):
                                    updates.users += diff.users
                                    updates.chats += diff.chats

                        if channel_id and pts:
                            if channel_id not in self.channels_pts:
                                self.channels_pts[channel_id] = []

                            if pts in self.channels_pts[channel_id]:
                                continue

                            self.channels_pts[channel_id].append(pts)

                            if len(self.channels_pts[channel_id]) > 50:
                                self.channels_pts[channel_id] = self.channels_pts[channel_id][25:]

                        self.dispatcher.updates.put((update, updates.users, updates.chats))
                elif isinstance(updates, (types.UpdateShortMessage, types.UpdateShortChatMessage)):
                    diff = self.send(
                        functions.updates.GetDifference(
                            pts=updates.pts - updates.pts_count,
                            date=updates.date,
                            qts=-1
                        )
                    )

                    self.dispatcher.updates.put((
                        types.UpdateNewMessage(
                            message=diff.new_messages[0],
                            pts=updates.pts,
                            pts_count=updates.pts_count
                        ),
                        diff.users,
                        diff.chats
                    ))
                elif isinstance(updates, types.UpdateShort):
                    self.dispatcher.updates.put((updates.update, [], []))
            except Exception as e:
                log.error(e, exc_info=True)

        log.debug("{} stopped".format(name))

    def signal_handler(self, *args):
        self.stop()
        self.is_idle = False

    def idle(self, stop_signals: tuple = (SIGINT, SIGTERM, SIGABRT)):
        """Blocks the program execution until one of the signals are received,
        then gently stop the Client by closing the underlying connection.

        Args:
            stop_signals (``tuple``, optional):
                Iterable containing signals the signal handler will listen to.
                Defaults to (SIGINT, SIGTERM, SIGABRT).
        """
        for s in stop_signals:
            signal(s, self.signal_handler)

        self.is_idle = True

        while self.is_idle:
            time.sleep(1)

    def send(self, data: Object):
        """Use this method to send Raw Function queries.

        This method makes possible to manually call every single Telegram API method in a low-level manner.
        Available functions are listed in the :obj:`functions <pyrogram.api.functions>` package and may accept compound
        data types from :obj:`types <pyrogram.api.types>` as well as bare types such as ``int``, ``str``, etc...

        Args:
            data (``Object``):
                The API Scheme function filled with proper arguments.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        if not self.is_started:
            raise ConnectionError("Client has not been started")

        r = self.session.send(data)

        self.fetch_peers(getattr(r, "users", []))
        self.fetch_peers(getattr(r, "chats", []))

        return r

    def load_config(self):
        parser = ConfigParser()
        parser.read("config.ini")

        if self.api_id and self.api_hash:
            pass
        else:
            if parser.has_section("pyrogram"):
                self.api_id = parser.getint("pyrogram", "api_id")
                self.api_hash = parser.get("pyrogram", "api_hash")
            else:
                raise AttributeError(
                    "No API Key found. "
                    "More info: https://docs.pyrogram.ml/start/ProjectSetup#configuration"
                )

        if self.proxy:
            pass
        else:
            self.proxy = {}

            if parser.has_section("proxy"):
                self.proxy["enabled"] = parser.getboolean("proxy", "enabled")
                self.proxy["hostname"] = parser.get("proxy", "hostname")
                self.proxy["port"] = parser.getint("proxy", "port")
                self.proxy["username"] = parser.get("proxy", "username", fallback=None) or None
                self.proxy["password"] = parser.get("proxy", "password", fallback=None) or None

    def load_session(self):
        try:
            with open("{}.session".format(self.session_name), encoding="utf-8") as f:
                s = json.load(f)
        except FileNotFoundError:
            self.dc_id = 1
            self.date = 0
            self.auth_key = Auth(self.dc_id, self.test_mode, self.proxy).create()
        else:
            self.dc_id = s["dc_id"]
            self.test_mode = s["test_mode"]
            self.auth_key = base64.b64decode("".join(s["auth_key"]))
            self.user_id = s["user_id"]
            self.date = s.get("date", 0)

            for k, v in s.get("peers_by_id", {}).items():
                self.peers_by_id[int(k)] = utils.get_input_peer(int(k), v)

            for k, v in s.get("peers_by_username", {}).items():
                peer = self.peers_by_id.get(v, None)

                if peer:
                    self.peers_by_username[k] = peer

            for k, v in s.get("peers_by_phone", {}).items():
                peer = self.peers_by_id.get(v, None)

                if peer:
                    self.peers_by_phone[k] = peer

    def save_session(self):
        auth_key = base64.b64encode(self.auth_key).decode()
        auth_key = [auth_key[i: i + 43] for i in range(0, len(auth_key), 43)]

        with open("{}.session".format(self.session_name), "w", encoding="utf-8") as f:
            json.dump(
                dict(
                    dc_id=self.dc_id,
                    test_mode=self.test_mode,
                    auth_key=auth_key,
                    user_id=self.user_id,
                    date=self.date
                ),
                f,
                indent=4
            )

    def get_dialogs_chunk(self, offset_date):
        while True:
            try:
                r = self.send(
                    functions.messages.GetDialogs(
                        offset_date, 0, types.InputPeerEmpty(),
                        self.DIALOGS_AT_ONCE, True
                    )
                )
            except FloodWait as e:
                log.warning("get_dialogs flood: waiting {} seconds".format(e.x))
                time.sleep(e.x)
            else:
                log.info("Total peers: {}".format(len(self.peers_by_id)))
                return r

    def get_dialogs(self):
        self.send(functions.messages.GetPinnedDialogs())

        dialogs = self.get_dialogs_chunk(0)
        offset_date = utils.get_offset_date(dialogs)

        while len(dialogs.dialogs) == self.DIALOGS_AT_ONCE:
            dialogs = self.get_dialogs_chunk(offset_date)
            offset_date = utils.get_offset_date(dialogs)

        self.get_dialogs_chunk(0)

    def resolve_peer(self, peer_id: int or str):
        """Use this method to get the *InputPeer* of a known *peer_id*.

        It is intended to be used when working with Raw Functions (i.e: a Telegram API method you wish to use which is
        not available yet in the Client class as an easy-to-use method).

        Args:
            peer_id (``int`` | ``str`` | ``Peer``):
                The Peer ID you want to extract the InputPeer from. Can be one of these types: ``int`` (direct ID),
                ``str`` (@username), :obj:`PeerUser <pyrogram.api.types.PeerUser>`,
                :obj:`PeerChat <pyrogram.api.types.PeerChat>`, :obj:`PeerChannel <pyrogram.api.types.PeerChannel>`

        Returns:
            :obj:`InputPeerUser <pyrogram.api.types.InputPeerUser>` or
            :obj:`InputPeerChat <pyrogram.api.types.InputPeerChat>` or
            :obj:`InputPeerChannel <pyrogram.api.types.InputPeerChannel>` depending on the *peer_id*.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        if type(peer_id) is str:
            if peer_id in ("self", "me"):
                return types.InputPeerSelf()

            match = self.INVITE_LINK_RE.match(peer_id)

            try:
                decoded = base64.b64decode(match.group(1) + "=" * (-len(match.group(1)) % 4), "-_")
                return self.resolve_peer(struct.unpack(">2iq", decoded)[1])
            except (AttributeError, binascii.Error, struct.error):
                pass

            peer_id = re.sub(r"[@+\s]", "", peer_id.lower())

            try:
                int(peer_id)
            except ValueError:
                try:
                    return self.peers_by_username[peer_id]
                except KeyError:
                    self.send(functions.contacts.ResolveUsername(peer_id))
                    return self.peers_by_username[peer_id]
            else:
                try:
                    return self.peers_by_phone[peer_id]
                except KeyError:
                    raise PeerIdInvalid

        if type(peer_id) is not int:
            if isinstance(peer_id, types.PeerUser):
                peer_id = peer_id.user_id
            elif isinstance(peer_id, types.PeerChat):
                peer_id = -peer_id.chat_id
            elif isinstance(peer_id, types.PeerChannel):
                peer_id = int("-100" + str(peer_id.channel_id))

        try:  # User
            return self.peers_by_id[peer_id]
        except KeyError:
            try:  # Chat
                return self.peers_by_id[-peer_id]
            except KeyError:
                try:  # Channel
                    return self.peers_by_id[int("-100" + str(peer_id))]
                except (KeyError, ValueError):
                    raise PeerIdInvalid

    def get_me(self):
        """A simple method for testing the user authorization. Requires no parameters.

        Returns:
            Full information about the user in form of a :obj:`UserFull <pyrogram.api.types.UserFull>` object.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.users.GetFullUser(
                types.InputPeerSelf()
            )
        )

    def send_message(self,
                     chat_id: int or str,
                     text: str,
                     parse_mode: str = "",
                     disable_web_page_preview: bool = None,
                     disable_notification: bool = None,
                     reply_to_message_id: int = None):
        """Use this method to send text messages.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            text (``str``):
                Text of the message to be sent.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your message.
                Defaults to Markdown.

            disable_web_page_preview (``bool``, optional):
                Disables link previews for links in this message.

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

            reply_to_message_id (``bool``, optional):
                If the message is a reply, ID of the original message.

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        style = self.html if parse_mode.lower() == "html" else self.markdown

        return self.send(
            functions.messages.SendMessage(
                peer=self.resolve_peer(chat_id),
                no_webpage=disable_web_page_preview or None,
                silent=disable_notification or None,
                reply_to_msg_id=reply_to_message_id,
                random_id=self.rnd_id(),
                **style.parse(text)
            )
        )

    def forward_messages(self,
                         chat_id: int or str,
                         from_chat_id: int or str,
                         message_ids: list,
                         disable_notification: bool = None):
        """Use this method to forward messages of any kind.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            from_chat_id (``int`` | ``str``):
                Unique identifier (int) or username (str) of the source chat where the original message was sent.
                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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            message_ids (``list``):
                A list of Message identifiers in the chat specified in *from_chat_id*.

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

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.messages.ForwardMessages(
                to_peer=self.resolve_peer(chat_id),
                from_peer=self.resolve_peer(from_chat_id),
                id=message_ids,
                silent=disable_notification or None,
                random_id=[self.rnd_id() for _ in message_ids]
            )
        )

    def send_photo(self,
                   chat_id: int or str,
                   photo: str,
                   caption: str = "",
                   parse_mode: str = "",
                   ttl_seconds: int = None,
                   disable_notification: bool = None,
                   reply_to_message_id: int = None,
                   progress: callable = None):
        """Use this method to send photos.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            photo (``str``):
                Photo to send.
                Pass a file_id as string to send a photo that exists on the Telegram servers,
                pass an HTTP URL as a string for Telegram to get a photo from the Internet, or
                pass a file path as string to upload a new photo that exists on your local machine.

            caption (``bool``, optional):
                Photo caption, 0-200 characters.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your caption.
                Defaults to Markdown.

            ttl_seconds (``int``, optional):
                Self-Destruct Timer.
                If you set a timer, the photo will self-destruct in *ttl_seconds*
                seconds after it was viewed.

            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.

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent :obj:`Message <pyrogram.Message>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        file = None
        style = self.html if parse_mode.lower() == "html" else self.markdown

        if os.path.exists(photo):
            file = self.save_file(photo, progress=progress)
            media = types.InputMediaUploadedPhoto(
                file=file,
                ttl_seconds=ttl_seconds
            )
        elif photo.startswith("http"):
            media = types.InputMediaPhotoExternal(
                url=photo,
                ttl_seconds=ttl_seconds
            )
        else:
            try:
                decoded = utils.decode(photo)
                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 = Client.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]
                    ),
                    ttl_seconds=ttl_seconds
                )

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=media,
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id(),
                        **style.parse(caption)
                    )
                )
            except FilePartMissing as e:
                self.save_file(photo, file_id=file.id, file_part=e.x)
            else:
                for i in r.updates:
                    if isinstance(i, (types.UpdateNewMessage, types.UpdateNewChannelMessage)):
                        users = {i.id: i for i in r.users}
                        chats = {i.id: i for i in r.chats}

                        return message_parser.parse_message(self, i.message, users, chats)

    def send_audio(self,
                   chat_id: int or str,
                   audio: str,
                   caption: str = "",
                   parse_mode: str = "",
                   duration: int = 0,
                   performer: str = None,
                   title: str = None,
                   disable_notification: bool = None,
                   reply_to_message_id: int = None,
                   progress: callable = None):
        """Use this method to send audio files.

        For sending voice messages, use the :obj:`send_voice` method instead.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            audio (``str``):
                Audio file to send.
                Pass a file_id as string to send an audio file that exists on the Telegram servers,
                pass an HTTP URL as a string for Telegram to get an audio file from the Internet, or
                pass a file path as string to upload a new audio file that exists on your local machine.

            caption (``str``, optional):
                Audio caption, 0-200 characters.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your caption.
                Defaults to Markdown.

            duration (``int``, optional):
                Duration of the audio in seconds.

            performer (``str``, optional):
                Performer.

            title (``str``, optional):
                Track name.

            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.

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent :obj:`Message <pyrogram.Message>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        file = None
        style = self.html if parse_mode.lower() == "html" else self.markdown

        if os.path.exists(audio):
            file = self.save_file(audio, progress=progress)
            media = types.InputMediaUploadedDocument(
                mime_type=mimetypes.types_map.get("." + audio.split(".")[-1], "audio/mpeg"),
                file=file,
                attributes=[
                    types.DocumentAttributeAudio(
                        duration=duration,
                        performer=performer,
                        title=title
                    ),
                    types.DocumentAttributeFilename(os.path.basename(audio))
                ]
            )
        elif audio.startswith("http"):
            media = types.InputMediaDocumentExternal(
                url=audio
            )
        else:
            try:
                decoded = utils.decode(audio)
                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] != 9:
                    media_type = Client.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]
                    )
                )

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=media,
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id(),
                        **style.parse(caption)
                    )
                )
            except FilePartMissing as e:
                self.save_file(audio, file_id=file.id, file_part=e.x)
            else:
                for i in r.updates:
                    if isinstance(i, (types.UpdateNewMessage, types.UpdateNewChannelMessage)):
                        users = {i.id: i for i in r.users}
                        chats = {i.id: i for i in r.chats}

                        return message_parser.parse_message(self, i.message, users, chats)

    def send_document(self,
                      chat_id: int or str,
                      document: str,
                      caption: str = "",
                      parse_mode: str = "",
                      disable_notification: bool = None,
                      reply_to_message_id: int = None,
                      progress: callable = None):
        """Use this method to send general files.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            document (``str``):
                File to send.
                Pass a file_id as string to send a file that exists on the Telegram servers,
                pass an HTTP URL as a string for Telegram to get a file from the Internet, or
                pass a file path as string to upload a new file that exists on your local machine.

            caption (``str``, optional):
                Document caption, 0-200 characters.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your caption.
                Defaults to Markdown.

            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.

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent :obj:`Message <pyrogram.Message>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        file = None
        style = self.html if parse_mode.lower() == "html" else self.markdown

        if os.path.exists(document):
            file = self.save_file(document, progress=progress)
            media = types.InputMediaUploadedDocument(
                mime_type=mimetypes.types_map.get("." + document.split(".")[-1], "text/plain"),
                file=file,
                attributes=[
                    types.DocumentAttributeFilename(os.path.basename(document))
                ]
            )
        elif document.startswith("http"):
            media = types.InputMediaDocumentExternal(
                url=document
            )
        else:
            try:
                decoded = utils.decode(document)
                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] not in (5, 10):
                    media_type = Client.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]
                    )
                )

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=media,
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id(),
                        **style.parse(caption)
                    )
                )
            except FilePartMissing as e:
                self.save_file(document, file_id=file.id, file_part=e.x)
            else:
                for i in r.updates:
                    if isinstance(i, (types.UpdateNewMessage, types.UpdateNewChannelMessage)):
                        users = {i.id: i for i in r.users}
                        chats = {i.id: i for i in r.chats}

                        return message_parser.parse_message(self, i.message, users, chats)

    def send_sticker(self,
                     chat_id: int or str,
                     sticker: str,
                     disable_notification: bool = None,
                     reply_to_message_id: int = None,
                     progress: callable = None):
        """Use this method to send .webp stickers.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            sticker (``str``):
                Sticker to send.
                Pass a file_id as string to send a sticker that exists on the Telegram servers,
                pass an HTTP URL as a string for Telegram to get a .webp sticker file from the Internet, or
                pass a file path as string to upload a new sticker that exists on your local machine.

            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.

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent :obj:`Message <pyrogram.Message>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        file = None

        if os.path.exists(sticker):
            file = self.save_file(sticker, progress=progress)
            media = types.InputMediaUploadedDocument(
                mime_type="image/webp",
                file=file,
                attributes=[
                    types.DocumentAttributeFilename(os.path.basename(sticker))
                ]
            )
        elif sticker.startswith("http"):
            media = types.InputMediaDocumentExternal(
                url=sticker
            )
        else:
            try:
                decoded = utils.decode(sticker)
                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] != 8:
                    media_type = Client.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]
                    )
                )

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=media,
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id(),
                        message=""
                    )
                )
            except FilePartMissing as e:
                self.save_file(sticker, file_id=file.id, file_part=e.x)
            else:
                for i in r.updates:
                    if isinstance(i, (types.UpdateNewMessage, types.UpdateNewChannelMessage)):
                        users = {i.id: i for i in r.users}
                        chats = {i.id: i for i in r.chats}

                        return message_parser.parse_message(self, i.message, users, chats)

    def send_video(self,
                   chat_id: int or str,
                   video: str,
                   caption: str = "",
                   parse_mode: str = "",
                   duration: int = 0,
                   width: int = 0,
                   height: int = 0,
                   thumb: str = None,
                   supports_streaming: bool = True,
                   disable_notification: bool = None,
                   reply_to_message_id: int = None,
                   progress: callable = None):
        """Use this method to send video files.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            video (``str``):
                Video to send.
                Pass a file_id as string to send a video that exists on the Telegram servers,
                pass an HTTP URL as a string for Telegram to get a video from the Internet, or
                pass a file path as string to upload a new video that exists on your local machine.

            caption (``str``, optional):
                Video caption, 0-200 characters.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your caption.
                Defaults to Markdown.

            duration (``int``, optional):
                Duration of sent video in seconds.

            width (``int``, optional):
                Video width.

            height (``int``, optional):
                Video height.

            thumb (``str``, optional):
                Video thumbnail.
                Pass a file path as string to send an image that exists on your local machine.
                Thumbnail should have 90 or less pixels of width and 90 or less pixels of height.

            supports_streaming (``bool``, optional):
                Pass True, if the uploaded video is suitable for streaming.

            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.

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent :obj:`Message <pyrogram.Message>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        file = None
        style = self.html if parse_mode.lower() == "html" else self.markdown

        if os.path.exists(video):
            thumb = None if thumb is None else self.save_file(thumb)
            file = self.save_file(video, progress=progress)
            media = types.InputMediaUploadedDocument(
                mime_type=mimetypes.types_map[".mp4"],
                file=file,
                thumb=thumb,
                attributes=[
                    types.DocumentAttributeVideo(
                        supports_streaming=supports_streaming or None,
                        duration=duration,
                        w=width,
                        h=height
                    ),
                    types.DocumentAttributeFilename(os.path.basename(video))
                ]
            )
        elif video.startswith("http"):
            media = types.InputMediaDocumentExternal(
                url=video
            )
        else:
            try:
                decoded = utils.decode(video)
                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 = Client.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]
                    )
                )

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=media,
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id(),
                        **style.parse(caption)
                    )
                )
            except FilePartMissing as e:
                self.save_file(video, file_id=file.id, file_part=e.x)
            else:
                for i in r.updates:
                    if isinstance(i, (types.UpdateNewMessage, types.UpdateNewChannelMessage)):
                        users = {i.id: i for i in r.users}
                        chats = {i.id: i for i in r.chats}

                        return message_parser.parse_message(self, i.message, users, chats)

    def send_voice(self,
                   chat_id: int or str,
                   voice: str,
                   caption: str = "",
                   parse_mode: str = "",
                   duration: int = 0,
                   disable_notification: bool = None,
                   reply_to_message_id: int = None,
                   progress: callable = None):
        """Use this method to send audio files.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            voice (``str``):
                Audio file to send.
                Pass a file path as string to send an audio file that exists on your local machine.

            caption (``str``, optional):
                Voice message caption, 0-200 characters.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your caption.
                Defaults to Markdown.

            duration (``int``, optional):
                Duration of the voice message in seconds.

            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

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        style = self.html if parse_mode.lower() == "html" else self.markdown
        file = self.save_file(voice, progress=progress)

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            mime_type=mimetypes.types_map.get("." + voice.split(".")[-1], "audio/mpeg"),
                            file=file,
                            attributes=[
                                types.DocumentAttributeAudio(
                                    voice=True,
                                    duration=duration
                                )
                            ]
                        ),
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id(),
                        **style.parse(caption)
                    )
                )
            except FilePartMissing as e:
                self.save_file(voice, file_id=file.id, file_part=e.x)
            else:
                return r

    def send_video_note(self,
                        chat_id: int or str,
                        video_note: str,
                        duration: int = 0,
                        length: int = 1,
                        disable_notification: bool = None,
                        reply_to_message_id: int = None,
                        progress: callable = None):
        """Use this method to send video messages.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            video_note (``str``):
                Video note to send.
                Pass a file path as string to send a video note that exists on your local machine.

            duration (``int``, optional):
                Duration of sent video in seconds.

            length (``int``, optional):
                Video width and height.

            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

            progress (``callable``):
                Pass a callback function to view the upload progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes uploaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        file = self.save_file(video_note, progress=progress)

        while True:
            try:
                r = self.send(
                    functions.messages.SendMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            mime_type=mimetypes.types_map[".mp4"],
                            file=file,
                            attributes=[
                                types.DocumentAttributeVideo(
                                    round_message=True,
                                    duration=duration,
                                    w=length,
                                    h=length
                                )
                            ]
                        ),
                        message="",
                        silent=disable_notification or None,
                        reply_to_msg_id=reply_to_message_id,
                        random_id=self.rnd_id()
                    )
                )
            except FilePartMissing as e:
                self.save_file(video_note, file_id=file.id, file_part=e.x)
            else:
                return r

    # TODO: Add progress parameter
    def send_media_group(self,
                         chat_id: int or str,
                         media: list,
                         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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            media (``list``):
                A list containing either :obj:`pyrogram.InputMedia.Photo` or :obj:`pyrogram.InputMedia.Video` 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:
            if isinstance(i, InputMedia.Photo):
                style = self.html if i.parse_mode.lower() == "html" else self.markdown
                media = self.save_file(i.media)

                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedPhoto(
                            file=media
                        )
                    )
                )

                single_media = types.InputSingleMedia(
                    media=types.InputMediaPhoto(
                        id=types.InputPhoto(
                            id=media.photo.id,
                            access_hash=media.photo.access_hash
                        )
                    ),
                    random_id=self.rnd_id(),
                    **style.parse(i.caption)
                )

                multi_media.append(single_media)
            elif isinstance(i, InputMedia.Video):
                style = self.html if i.parse_mode.lower() == "html" else self.markdown
                media = self.save_file(i.media)

                media = self.send(
                    functions.messages.UploadMedia(
                        peer=self.resolve_peer(chat_id),
                        media=types.InputMediaUploadedDocument(
                            file=media,
                            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))
                            ]
                        )
                    )
                )

                single_media = types.InputSingleMedia(
                    media=types.InputMediaDocument(
                        id=types.InputDocument(
                            id=media.document.id,
                            access_hash=media.document.access_hash
                        )
                    ),
                    random_id=self.rnd_id(),
                    **style.parse(i.caption)
                )

                multi_media.append(single_media)

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

    def send_location(self,
                      chat_id: int or str,
                      latitude: float,
                      longitude: float,
                      disable_notification: bool = None,
                      reply_to_message_id: int = None):
        """Use this method to send points on the map.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            latitude (``float``):
                Latitude of the location.

            longitude (``float``):
                Longitude of the location.

            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

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.messages.SendMedia(
                peer=self.resolve_peer(chat_id),
                media=types.InputMediaGeoPoint(
                    types.InputGeoPoint(
                        latitude,
                        longitude
                    )
                ),
                message="",
                silent=disable_notification or None,
                reply_to_msg_id=reply_to_message_id,
                random_id=self.rnd_id()
            )
        )

    def send_venue(self,
                   chat_id: int or str,
                   latitude: float,
                   longitude: float,
                   title: str,
                   address: str,
                   foursquare_id: str = "",
                   disable_notification: bool = None,
                   reply_to_message_id: int = None):
        """Use this method to send information about a venue.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            latitude (``float``):
                Latitude of the venue.

            longitude (``float``):
                Longitude of the venue.

            title (``str``):
                Name of the venue.

            address (``str``):
                Address of the venue.

            foursquare_id (``str``, optional):
                Foursquare identifier of the venue.

            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

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.messages.SendMedia(
                peer=self.resolve_peer(chat_id),
                media=types.InputMediaVenue(
                    geo_point=types.InputGeoPoint(
                        lat=latitude,
                        long=longitude
                    ),
                    title=title,
                    address=address,
                    provider="",
                    venue_id=foursquare_id,
                    venue_type=""
                ),
                message="",
                silent=disable_notification or None,
                reply_to_msg_id=reply_to_message_id,
                random_id=self.rnd_id()
            )
        )

    def send_contact(self,
                     chat_id: int or str,
                     phone_number: str,
                     first_name: str,
                     last_name: str,
                     disable_notification: bool = None,
                     reply_to_message_id: int = None):
        """Use this method to send phone contacts.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            phone_number (``str``):
                Contact's phone number.

            first_name (``str``):
                Contact's first name.

            last_name (``str``):
                Contact's last name.

            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.

        Returns:
             On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.messages.SendMedia(
                peer=self.resolve_peer(chat_id),
                media=types.InputMediaContact(
                    phone_number,
                    first_name,
                    last_name
                ),
                message="",
                silent=disable_notification or None,
                reply_to_msg_id=reply_to_message_id,
                random_id=self.rnd_id()
            )
        )

    def send_chat_action(self,
                         chat_id: int or str,
                         action: callable,
                         progress: int = 0):
        """Use this method when you need to tell the other party that something is happening on your side.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            action (``callable``):
                Type of action to broadcast.
                Choose one from the :class:`ChatAction <pyrogram.ChatAction>` class,
                depending on what the user is about to receive.

            progress (``int``, optional):
                Progress of the upload process.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        if "Upload" in action.__name__:
            action = action(progress)
        else:
            action = action()

        return self.send(
            functions.messages.SetTyping(
                peer=self.resolve_peer(chat_id),
                action=action
            )
        )

    def get_user_profile_photos(self,
                                user_id: int or str,
                                offset: int = 0,
                                limit: int = 100):
        """Use this method to get a list of profile pictures for a user.

        Args:
            user_id (``int`` | ``str``):
                Unique identifier of the target user.

            offset (``int``, optional):
                Sequential number of the first photo to be returned.
                By default, all photos are returned.

            limit (``int``, optional):
                Limits the number of photos to be retrieved.
                Values between 1—100 are accepted. Defaults to 100.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.photos.GetUserPhotos(
                user_id=self.resolve_peer(user_id),
                offset=offset,
                max_id=0,
                limit=limit
            )
        )

    def edit_message_text(self,
                          chat_id: int or str,
                          message_id: int,
                          text: str,
                          parse_mode: str = "",
                          disable_web_page_preview: bool = None):
        """Use this method to edit text messages.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            message_id (``int``):
                Message identifier in the chat specified in chat_id.

            text (``str``):
                New text of the message.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your message.
                Defaults to Markdown.

            disable_web_page_preview (``bool``, optional):
                Disables link previews for links in this message.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        style = self.html if parse_mode.lower() == "html" else self.markdown

        return self.send(
            functions.messages.EditMessage(
                peer=self.resolve_peer(chat_id),
                id=message_id,
                no_webpage=disable_web_page_preview or None,
                **style.parse(text)
            )
        )

    def edit_message_caption(self,
                             chat_id: int or str,
                             message_id: int,
                             caption: str,
                             parse_mode: str = ""):
        """Use this method to edit captions of messages.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            message_id (``int``):
                Message identifier in the chat specified in chat_id.

            caption (``str``):
                New caption of the message.

            parse_mode (``str``):
                Use :obj:`MARKDOWN <pyrogram.ParseMode.MARKDOWN>` or :obj:`HTML <pyrogram.ParseMode.HTML>`
                if you want Telegram apps to show bold, italic, fixed-width text or inline URLs in your caption.
                Defaults to Markdown.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        style = self.html if parse_mode.lower() == "html" else self.markdown

        return self.send(
            functions.messages.EditMessage(
                peer=self.resolve_peer(chat_id),
                id=message_id,
                **style.parse(caption)
            )
        )

    def delete_messages(self,
                        chat_id: int or str,
                        message_ids: list,
                        revoke: bool = None):
        """Use this method to delete messages, including service messages, with the following limitations:

        - A message can only be deleted if it was sent less than 48 hours ago.
        - Users can delete outgoing messages in groups and supergroups.
        - Users granted *can_post_messages* permissions can delete outgoing messages in channels.
        - If the user is an administrator of a group, it can delete any message there.
        - If the user has *can_delete_messages* permission in a supergroup or a channel, it can delete any message there.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            message_ids (``list``):
                List of identifiers of the messages to delete.

            revoke (``bool``, optional):
                Deletes messages on both parts.
                This is only for private cloud chats and normal groups, messages on
                channels and supergroups are always revoked (i.e.: deleted for everyone).

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        peer = self.resolve_peer(chat_id)

        if isinstance(peer, types.InputPeerChannel):
            return self.send(
                functions.channels.DeleteMessages(
                    channel=peer,
                    id=message_ids
                )
            )
        else:
            # TODO: Maybe "revoke" is superfluous.
            # If I want to delete a message, chances are I want it to
            # be deleted even from the other side
            return self.send(
                functions.messages.DeleteMessages(
                    id=message_ids,
                    revoke=revoke or None
                )
            )

    # TODO: Remove redundant code
    def save_file(self,
                  path: str,
                  file_id: int = None,
                  file_part: int = 0,
                  progress: callable = None):
        part_size = 512 * 1024
        file_size = os.path.getsize(path)
        file_total_parts = math.ceil(file_size / part_size)
        is_big = True if file_size > 10 * 1024 * 1024 else False
        is_missing_part = True if file_id is not None else False
        file_id = file_id or self.rnd_id()
        md5_sum = md5() if not is_big and not is_missing_part else None

        session = Session(self.dc_id, self.test_mode, self.proxy, self.auth_key, self.api_id)
        session.start()

        try:
            with open(path, "rb") as f:
                f.seek(part_size * file_part)

                while True:
                    chunk = f.read(part_size)

                    if not chunk:
                        if not is_big:
                            md5_sum = "".join([hex(i)[2:].zfill(2) for i in md5_sum.digest()])
                        break

                    if is_big:
                        rpc = functions.upload.SaveBigFilePart(
                            file_id=file_id,
                            file_part=file_part,
                            file_total_parts=file_total_parts,
                            bytes=chunk
                        )
                    else:
                        rpc = functions.upload.SaveFilePart(
                            file_id=file_id,
                            file_part=file_part,
                            bytes=chunk
                        )

                    assert self.send(rpc), "Couldn't upload file"

                    if is_missing_part:
                        return

                    if not is_big:
                        md5_sum.update(chunk)

                    file_part += 1

                    if progress:
                        progress(min(file_part * part_size, file_size), file_size)
        except Exception as e:
            log.error(e, exc_info=True)
        else:
            if is_big:
                return types.InputFileBig(
                    id=file_id,
                    parts=file_total_parts,
                    name=os.path.basename(path),

                )
            else:
                return types.InputFile(
                    id=file_id,
                    parts=file_total_parts,
                    name=os.path.basename(path),
                    md5_checksum=md5_sum
                )
        finally:
            session.stop()

    def get_file(self,
                 dc_id: int,
                 id: int = None,
                 access_hash: int = None,
                 volume_id: int = None,
                 local_id: int = None,
                 secret: int = None,
                 version: int = 0,
                 size: int = None,
                 progress: callable = None) -> str:
        if dc_id != self.dc_id:
            exported_auth = self.send(
                functions.auth.ExportAuthorization(
                    dc_id=dc_id
                )
            )

            session = Session(
                dc_id,
                self.test_mode,
                self.proxy,
                Auth(dc_id, self.test_mode, self.proxy).create(),
                self.api_id
            )

            session.start()

            session.send(
                functions.auth.ImportAuthorization(
                    id=exported_auth.id,
                    bytes=exported_auth.bytes
                )
            )
        else:
            session = Session(
                dc_id,
                self.test_mode,
                self.proxy,
                self.auth_key,
                self.api_id
            )

            session.start()

        if volume_id:  # Photos are accessed by volume_id, local_id, secret
            location = types.InputFileLocation(
                volume_id=volume_id,
                local_id=local_id,
                secret=secret
            )
        else:  # Any other file can be more easily accessed by id and access_hash
            location = types.InputDocumentFileLocation(
                id=id,
                access_hash=access_hash,
                version=version
            )

        limit = 1024 * 1024
        offset = 0
        file_name = ""

        try:
            r = session.send(
                functions.upload.GetFile(
                    location=location,
                    offset=offset,
                    limit=limit
                )
            )

            if isinstance(r, types.upload.File):
                with tempfile.NamedTemporaryFile("wb", delete=False) as f:
                    file_name = f.name

                    while True:
                        chunk = r.bytes

                        if not chunk:
                            break

                        f.write(chunk)
                        f.flush()
                        os.fsync(f.fileno())

                        offset += limit

                        if progress:
                            progress(min(offset, size), size)

                        r = session.send(
                            functions.upload.GetFile(
                                location=location,
                                offset=offset,
                                limit=limit
                            )
                        )

            elif isinstance(r, types.upload.FileCdnRedirect):
                cdn_session = Session(
                    r.dc_id,
                    self.test_mode,
                    self.proxy,
                    Auth(r.dc_id, self.test_mode, self.proxy).create(),
                    self.api_id,
                    is_cdn=True
                )

                cdn_session.start()

                try:
                    with tempfile.NamedTemporaryFile("wb", delete=False) as f:
                        file_name = f.name

                        while True:
                            r2 = cdn_session.send(
                                functions.upload.GetCdnFile(
                                    file_token=r.file_token,
                                    offset=offset,
                                    limit=limit
                                )
                            )

                            if isinstance(r2, types.upload.CdnFileReuploadNeeded):
                                try:
                                    session.send(
                                        functions.upload.ReuploadCdnFile(
                                            file_token=r.file_token,
                                            request_token=r2.request_token
                                        )
                                    )
                                except VolumeLocNotFound:
                                    break
                                else:
                                    continue

                            chunk = r2.bytes

                            # https://core.telegram.org/cdn#decrypting-files
                            decrypted_chunk = AES.ctr_decrypt(
                                chunk,
                                r.encryption_key,
                                r.encryption_iv,
                                offset
                            )

                            hashes = session.send(
                                functions.upload.GetCdnFileHashes(
                                    r.file_token,
                                    offset
                                )
                            )

                            # https://core.telegram.org/cdn#verifying-files
                            for i, h in enumerate(hashes):
                                cdn_chunk = decrypted_chunk[h.limit * i: h.limit * (i + 1)]
                                assert h.hash == sha256(cdn_chunk).digest(), "Invalid CDN hash part {}".format(i)

                            f.write(decrypted_chunk)
                            f.flush()
                            os.fsync(f.fileno())

                            offset += limit

                            if progress:
                                progress(min(offset, size), size)

                            if len(chunk) < limit:
                                break
                except Exception as e:
                    raise e
                finally:
                    cdn_session.stop()
        except Exception as e:
            log.error(e, exc_info=True)

            try:
                os.remove(file_name)
            except OSError:
                pass

            return ""
        else:
            return file_name
        finally:
            session.stop()

    def join_chat(self, chat_id: str):
        """Use this method to join a group chat or channel.

        Args:
            chat_id (``str``):
                Unique identifier for the target chat in form of *t.me/joinchat/* links or username of the target
                channel/supergroup (in the format @username).

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        match = self.INVITE_LINK_RE.match(chat_id)

        if match:
            return self.send(
                functions.messages.ImportChatInvite(
                    hash=match.group(1)
                )
            )
        else:
            resolved_peer = self.send(
                functions.contacts.ResolveUsername(
                    username=chat_id.lower().strip("@")
                )
            )

            channel = types.InputPeerChannel(
                channel_id=resolved_peer.chats[0].id,
                access_hash=resolved_peer.chats[0].access_hash
            )

            return self.send(
                functions.channels.JoinChannel(
                    channel=channel
                )
            )

    def leave_chat(self, chat_id: int or str, delete: bool = False):
        """Use this method to leave a group chat or channel.

        Args:
            chat_id (``int`` | ``str``):
                Unique identifier for the target chat or username of the target channel/supergroup
                (in the format @username).

            delete (``bool``, optional):
                Deletes the group chat dialog after leaving (for simple group chats, not supergroups).

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        peer = self.resolve_peer(chat_id)

        if isinstance(peer, types.InputPeerChannel):
            return self.send(
                functions.channels.LeaveChannel(
                    channel=self.resolve_peer(chat_id)
                )
            )
        elif isinstance(peer, types.InputPeerChat):
            r = self.send(
                functions.messages.DeleteChatUser(
                    chat_id=peer.chat_id,
                    user_id=types.InputPeerSelf()
                )
            )

            if delete:
                self.send(
                    functions.messages.DeleteHistory(
                        peer=peer,
                        max_id=0
                    )
                )

            return r

    def export_chat_invite_link(self, chat_id: int or str, new: bool = False):
        """Use this method to export an invite link to a supergroup or a channel.

        The user must be an administrator in the chat for this to work and must have the appropriate admin rights.

        Args:
            chat_id (``int`` | ``str``):
                Unique identifier for the target chat or username of the target channel/supergroup
                (in the format @username).

            new (``bool``):
                The previous link will be deactivated and a new link will be generated.
                This is also used to create the invite link in case it doesn't exist yet.

        Returns:
            On success, the exported invite link as string is returned.

        Raises:
            :class:`Error <pyrogram.Error>`

        Note:
            If the returned link is a new one it may take a while for it to be activated.
        """
        peer = self.resolve_peer(chat_id)

        if isinstance(peer, types.InputPeerChat):
            if new:
                return self.send(
                    functions.messages.ExportChatInvite(
                        chat_id=peer.chat_id
                    )
                ).link
            else:
                chat_full = self.send(
                    functions.messages.GetFullChat(
                        chat_id=peer.chat_id
                    )
                ).full_chat  # type: types.ChatFull

                if isinstance(chat_full.exported_invite, types.ChatInviteExported):
                    return chat_full.exported_invite.link
                else:
                    raise ChatAdminRequired
        elif isinstance(peer, types.InputPeerChannel):
            if new:
                return self.send(
                    functions.channels.ExportInvite(
                        channel=peer
                    )
                ).link
            else:
                channel_full = self.send(
                    functions.channels.GetFullChannel(
                        channel=peer
                    )
                ).full_chat  # type: types.ChannelFull

                if isinstance(channel_full.exported_invite, types.ChatInviteExported):
                    return channel_full.exported_invite.link
                else:
                    raise ChatAdminRequired

    def enable_cloud_password(self, password: str, hint: str = "", email: str = ""):
        """Use this method to enable the Two-Step Verification security feature (Cloud Password) on your account.

        This password will be asked when you log in on a new device in addition to the SMS code.

        Args:
            password (``str``):
                Your password.

            hint (``str``, optional):
                A password hint.

            email (``str``, optional):
                Recovery e-mail.

        Returns:
            True on success, False otherwise.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        r = self.send(functions.account.GetPassword())

        if isinstance(r, types.account.NoPassword):
            salt = r.new_salt + os.urandom(8)
            password_hash = sha256(salt + password.encode() + salt).digest()

            return self.send(
                functions.account.UpdatePasswordSettings(
                    current_password_hash=salt,
                    new_settings=types.account.PasswordInputSettings(
                        new_salt=salt,
                        new_password_hash=password_hash,
                        hint=hint,
                        email=email
                    )
                )
            )
        else:
            return False

    def change_cloud_password(self, current_password: str, new_password: str, new_hint: str = ""):
        """Use this method to change your Two-Step Verification password (Cloud Password) with a new one.

        Args:
            current_password (``str``):
                Your current password.

            new_password (``str``):
                Your new password.

            new_hint (``str``, optional):
                A new password hint.

        Returns:
            True on success, False otherwise.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        r = self.send(functions.account.GetPassword())

        if isinstance(r, types.account.Password):
            current_password_hash = sha256(r.current_salt + current_password.encode() + r.current_salt).digest()

            new_salt = r.new_salt + os.urandom(8)
            new_password_hash = sha256(new_salt + new_password.encode() + new_salt).digest()

            return self.send(
                functions.account.UpdatePasswordSettings(
                    current_password_hash=current_password_hash,
                    new_settings=types.account.PasswordInputSettings(
                        new_salt=new_salt,
                        new_password_hash=new_password_hash,
                        hint=new_hint
                    )
                )
            )
        else:
            return False

    def remove_cloud_password(self, password: str):
        """Use this method to turn off the Two-Step Verification security feature (Cloud Password) on your account.

        Args:
            password (``str``):
                Your current password.

        Returns:
            True on success, False otherwise.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        r = self.send(functions.account.GetPassword())

        if isinstance(r, types.account.Password):
            password_hash = sha256(r.current_salt + password.encode() + r.current_salt).digest()

            return self.send(
                functions.account.UpdatePasswordSettings(
                    current_password_hash=password_hash,
                    new_settings=types.account.PasswordInputSettings(
                        new_salt=b"",
                        new_password_hash=b"",
                        hint=""
                    )
                )
            )
        else:
            return False

    def download_media(self,
                       message: types.Message,
                       file_name: str = "",
                       block: bool = True,
                       progress: callable = None):
        """Use this method to download the media from a Message.

        Args:
            message (:obj:`Message <pyrogram.api.types.Message>`):
                The Message containing the media.

            file_name (``str``, optional):
                A custom *file_name* to be used instead of the one provided by Telegram.
                By default, all files are downloaded in the *downloads* folder in your working directory.
                You can also specify a path for downloading files in a custom location: paths that end with "/"
                are considered directories. All non-existent folders will be created automatically.

            block (``bool``, optional):
                Blocks the code execution until the file has been downloaded.
                Defaults to True.

            progress (``callable``):
                Pass a callback function to view the download progress.
                The function must accept two arguments (current, total).

        Other Parameters:
            current (``int``):
                The amount of bytes downloaded so far.

            total (``int``):
                The size of the file.

        Returns:
            On success, the absolute path of the downloaded file as string is returned, None otherwise.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        if isinstance(message, (types.Message, types.Photo)):
            done = Event()
            path = [None]

            if isinstance(message, types.Message):
                media = message.media
            else:
                media = message

            if media is not None:
                self.download_queue.put((media, file_name, done, progress, path))
            else:
                return

            if block:
                done.wait()

            return path[0]

    def download_photo(self,
                       photo: types.Photo or types.UserProfilePhoto or types.ChatPhoto,
                       file_name: str = "",
                       block: bool = True):
        """Use this method to download a photo not contained inside a Message.
        For example, a photo of a User or a Chat/Channel.

        Args:
            photo (:obj:`Photo <pyrogram.api.types.Photo>` | :obj:`UserProfilePhoto <pyrogram.api.types.UserProfilePhoto>` | :obj:`ChatPhoto <pyrogram.api.types.ChatPhoto>`):
                The photo object.

            file_name (``str``, optional):
                A custom *file_name* to be used instead of the one provided by Telegram.
                By default, all photos are downloaded in the *downloads* folder in your working directory.
                You can also specify a path for downloading photos in a custom location: paths that end with "/"
                are considered directories. All non-existent folders will be created automatically.

            block (``bool``, optional):
                Blocks the code execution until the photo has been downloaded.
                Defaults to True.

        Returns:
            On success, the absolute path of the downloaded photo as string is returned, None otherwise.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        if isinstance(photo, (types.UserProfilePhoto, types.ChatPhoto)):
            photo = types.Photo(
                id=0,
                access_hash=0,
                date=int(time.time()),
                sizes=[types.PhotoSize(
                    type="",
                    location=photo.photo_big,
                    w=0,
                    h=0,
                    size=0
                )]
            )

        return self.download_media(photo, file_name, block)

    def add_contacts(self, contacts: list):
        """Use this method to add contacts to your Telegram address book.

        Args:
            contacts (``list``):
                A list of :obj:`InputPhoneContact <pyrogram.InputPhoneContact>`

        Returns:
            On success, the added contacts are returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        imported_contacts = self.send(
            functions.contacts.ImportContacts(
                contacts=contacts
            )
        )

        return imported_contacts

    def delete_contacts(self, ids: list):
        """Use this method to delete contacts from your Telegram address book

        Args:
            ids (``list``):
                A list of unique identifiers for the target users.
                Can be an ID (int), a username (string) or phone number (string).

        Returns:
            True on success.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        contacts = []

        for i in ids:
            try:
                input_user = self.resolve_peer(i)
            except PeerIdInvalid:
                continue
            else:
                if isinstance(input_user, types.InputPeerUser):
                    contacts.append(input_user)

        return self.send(
            functions.contacts.DeleteContacts(
                id=contacts
            )
        )

    def get_contacts(self, _hash: int = 0):
        while True:
            try:
                contacts = self.send(functions.contacts.GetContacts(_hash))
            except FloodWait as e:
                log.warning("get_contacts flood: waiting {} seconds".format(e.x))
                time.sleep(e.x)
                continue
            else:
                if isinstance(contacts, types.contacts.Contacts):
                    log.info("Total contacts: {}".format(len(self.peers_by_phone)))

                return contacts

    def get_inline_bot_results(self,
                               bot: int or str,
                               query: str,
                               offset: str = "",
                               location: tuple = None):
        """Use this method to get bot results via inline queries.
        You can then send a result using :obj:`send_inline_bot_result <pyrogram.Client.send_inline_bot_result>`

        Args:
            bot (``int`` | ``str``):
                Unique identifier of the inline bot you want to get results from. You can specify
                a @username (str) or a bot ID (int).

            query (``str``):
                Text of the query (up to 512 characters).

            offset (``str``):
                Offset of the results to be returned.

            location (``tuple``, optional):
                Your location in tuple format (latitude, longitude), e.g.: (51.500729, -0.124583).
                Useful for location-based results only.

        Returns:
            On Success, :obj:`BotResults <pyrogram.api.types.messages.BotResults>` is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.messages.GetInlineBotResults(
                bot=self.resolve_peer(bot),
                peer=types.InputPeerSelf(),
                query=query,
                offset=offset,
                geo_point=types.InputGeoPoint(
                    lat=location[0],
                    long=location[1]
                ) if location else None
            )
        )

    def send_inline_bot_result(self,
                               chat_id: int or str,
                               query_id: int,
                               result_id: str,
                               disable_notification: bool = None,
                               reply_to_message_id: int = None):
        """Use this method to send an inline bot result.
        Bot results can be retrieved using :obj:`get_inline_bot_results <pyrogram.Client.get_inline_bot_results>`

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            query_id (``int``):
                Unique identifier for the answered query.

            result_id (``str``):
                Unique identifier for the result that was chosen.

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

            reply_to_message_id (``bool``, optional):
                If the message is a reply, ID of the original message.

        Returns:
            On success, the sent Message is returned.

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        return self.send(
            functions.messages.SendInlineBotResult(
                peer=self.resolve_peer(chat_id),
                query_id=query_id,
                id=result_id,
                random_id=self.rnd_id(),
                silent=disable_notification or None,
                reply_to_msg_id=reply_to_message_id
            )
        )

    def get_messages(self,
                     chat_id: int or str,
                     message_ids: list):
        """Use this method to get messages that belong to a specific chat.
        You can retrieve up to 200 messages at once.

        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).
                For a private channel/supergroup you can use its *t.me/joinchat/* link.

            message_ids (``list``):
                A list of Message identifiers in the chat specified in *chat_id*.

        Returns:
            List of the requested messages

        Raises:
            :class:`Error <pyrogram.Error>`
        """
        peer = self.resolve_peer(chat_id)
        message_ids = [types.InputMessageID(i) for i in message_ids]

        if isinstance(peer, types.InputPeerChannel):
            rpc = functions.channels.GetMessages(
                channel=peer,
                id=message_ids
            )
        else:
            rpc = functions.messages.GetMessages(
                id=message_ids
            )

        return self.send(rpc)