#    Friendly Telegram (telegram userbot)
#    Copyright (C) 2018-2021 The Authors

#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.

#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.

#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <https://www.gnu.org/licenses/>.

#    Modded by GeekTG Team

import argparse
import asyncio
import collections
import importlib
import json
import logging
import os
import platform
import random
import socket
import sqlite3
import sys

from requests import get
from telethon import TelegramClient, events
from telethon.errors.rpcerrorlist import (
    PhoneNumberInvalidError,
    MessageNotModifiedError,
    ApiIdInvalidError,
    AuthKeyDuplicatedError,
)
from telethon.network.connection import ConnectionTcpFull
from telethon.network.connection import ConnectionTcpMTProxyRandomizedIntermediate
from telethon.sessions import StringSession, SQLiteSession
from telethon.tl.functions.channels import DeleteChannelRequest

from . import utils, loader
from .database import backend, frontend
from .dispatcher import CommandDispatcher
from .translations.core import Translator

__version__ = (1, 0, 0)
try:
    from .web import core
except ImportError:
    web_available = False
    logging.exception("Unable to import web")
else:
    web_available = True


def run_config(db, data_root, phone=None, modules=None):
    """Load configurator.py"""
    from . import configurator

    return configurator.run(db, data_root, phone, phone is None, modules)


def get_config_key(key):
    """Parse and return key from config"""
    try:
        with open("config.json", "r") as f:
            config = json.loads(f.read())

        return config.get(key, False)
    except FileNotFoundError:
        return False


def save_config_key(key, value):
    try:
        # Try to open our newly created json config
        with open("config.json", "r") as f:
            config = json.loads(f.read())
    except FileNotFoundError:
        # If it doesn't exist, just default config to none
        # It won't cause problems, bc after new save
        # we will create new one
        config = {}

    # Assign config value
    config[key] = value

    # And save config
    with open("config.json", "w") as f:
        f.write(json.dumps(config))

    return True


save_config_key("use_fs_for_modules", get_config_key("use_fs_for_modules"))


def gen_port():
    if "OKTETO" in os.environ:
        return 8080

    # But for own server we generate new free port, and assign to it

    port = get_config_key("port")
    if port:
        return port

    # If we didn't get port from config, generate new one
    # First, try to randomly get port
    port = random.randint(1024, 65536)

    # Then ensure it's free
    while (
        socket.socket(socket.AF_INET, socket.SOCK_STREAM).connect_ex(
            ("localhost", port)
        )
        == 0
    ):
        # Until we find the free port, generate new one
        port = random.randint(1024, 65536)

    return port


def save_db_type(use_file_db):
    return save_config_key("use_file_db", use_file_db)


def parse_arguments():
    """Parse the arguments"""
    parser = argparse.ArgumentParser()
    parser.add_argument("--setup", "-s", action="store_true")
    parser.add_argument(
        "--port", dest="port", action="store", default=gen_port(), type=int
    )
    parser.add_argument("--phone", "-p", action="append")
    parser.add_argument("--token", "-t", action="append", dest="tokens")
    parser.add_argument("--no-nickname", "-nn", dest="no_nickname", action="store_true")
    parser.add_argument("--no-inline", dest="use_inline", action="store_false")
    parser.add_argument("--hosting", "-lh", dest="hosting", action="store_true")
    parser.add_argument("--default-app", "-da", dest="default_app", action="store_true")
    parser.add_argument("--web-only", dest="web_only", action="store_true")
    parser.add_argument("--no-web", dest="web", action="store_false")
    parser.add_argument(
        "--data-root",
        dest="data_root",
        default="",
        help="Root path to store session files in",
    )
    parser.add_argument(
        "--no-auth",
        dest="no_auth",
        action="store_true",
        help="Disable authentication and API token input, exitting if needed",
    )
    parser.add_argument(
        "--proxy-host",
        dest="proxy_host",
        action="store",
        help="MTProto proxy host, without port",
    )
    parser.add_argument(
        "--proxy-port",
        dest="proxy_port",
        action="store",
        type=int,
        help="MTProto proxy port",
    )
    parser.add_argument(
        "--proxy-secret",
        dest="proxy_secret",
        action="store",
        help="MTProto proxy secret",
    )
    parser.add_argument(
        "--docker-deps-internal",
        dest="docker_deps_internal",
        action="store_true",
        help="This is for internal use only. If you use it, things will go wrong.",
    )
    parser.add_argument(
        "--root",
        dest="disable_root_check",
        action="store_true",
        help="Disable `force_insecure` warning",
    )
    arguments = parser.parse_args()
    logging.debug(arguments)
    if sys.platform == "win32":
        # Subprocess support; not needed in 3.8 but not harmful
        asyncio.set_event_loop(asyncio.ProactorEventLoop())

    return arguments


def get_phones(arguments):
    """Get phones from the --token, --phone, and environment"""
    phones = {
        phone.split(":", maxsplit=1)[0]: phone
        for phone in map(
            lambda f: f[6:-8],
            filter(
                lambda f: f.startswith("hikka-") and f.endswith(".session"),
                os.listdir(
                    arguments.data_root or os.path.dirname(utils.get_base_dir())
                ),
            ),
        )
    }

    phones.update(
        **(
            {phone.split(":", maxsplit=1)[0]: phone for phone in arguments.phone}
            if arguments.phone
            else {}
        )
    )

    authtoken = {}
    if arguments.tokens:
        for token in arguments.tokens:
            phone = sorted(filter(lambda phone: ":" not in phone, phones.values()))[0]
            del phones[phone]
            authtoken[phone] = token

    return phones, authtoken


def get_api_token(arguments, use_default_app=False):
    """Get API Token from disk or environment"""
    api_token_type = collections.namedtuple("api_token", ("ID", "HASH"))

    # Allow user to use default API credintials
    # These are android ones
    if use_default_app:
        return api_token_type(2040, "b18441a1ff607e10a989891a5462e627")

    # Try to retrieve credintials from file, or from env vars
    try:
        with open(
            os.path.join(
                arguments.data_root or os.path.dirname(utils.get_base_dir()),
                "api_token.txt",
            )
        ) as f:
            api_token = api_token_type(*[line.strip() for line in f.readlines()])
    except FileNotFoundError:
        try:
            from . import api_token
        except ImportError:
            try:
                api_token = api_token_type(os.environ["api_id"], os.environ["api_hash"])
            except KeyError:
                api_token = None

    return api_token


def get_proxy(arguments):
    """Get proxy tuple from --proxy-host, --proxy-port and --proxy-secret
    and connection to use (depends on proxy - provided or not)"""
    if (
        arguments.proxy_host is not None
        and arguments.proxy_port is not None
        and arguments.proxy_secret is not None
    ):
        logging.debug("Using proxy: %s:%s", arguments.proxy_host, arguments.proxy_port)
        return (
            (arguments.proxy_host, arguments.proxy_port, arguments.proxy_secret),
            ConnectionTcpMTProxyRandomizedIntermediate,
        )

    return None, ConnectionTcpFull


class SuperList(list):
    """
    Makes able: await self.allclients.send_message("foo", "bar")
    """

    def __getattribute__(self, attr):
        if hasattr(list, attr):
            return list.__getattribute__(self, attr)

        for obj in self:  # TODO: find other way
            attribute = getattr(obj, attr)
            if callable(attribute):
                if asyncio.iscoroutinefunction(attribute):

                    async def foobar(*args, **kwargs):
                        return [await getattr(_, attr)(*args, **kwargs) for _ in self]

                    return foobar
                return lambda *args, **kwargs: [
                    getattr(_, attr)(*args, **kwargs) for _ in self
                ]

            return [getattr(x, attr) for x in self]


def main():  # noqa: C901
    """Main entrypoint"""
    arguments = parse_arguments()
    loop = asyncio.get_event_loop()

    clients = SuperList()
    phones, authtoken = get_phones(arguments)
    api_token = get_api_token(arguments, arguments.default_app)
    proxy, conn = get_proxy(arguments)

    if web_available:
        web = (
            core.Web(
                data_root=arguments.data_root,
                api_token=api_token,
                proxy=proxy,
                connection=conn,
                hosting=arguments.hosting,
                default_app=arguments.default_app,
            )
            if arguments.web
            else None
        )
    else:
        web = None

    save_config_key("port", arguments.port)

    while api_token is None:
        if arguments.no_auth:
            return
        if web:
            loop.run_until_complete(web.start(arguments.port))
            print("Web mode ready for configuration")  # noqa: T001
            port = str(web.port)
            if platform.system() == "Linux" and not os.path.exists(
                "/etc/os-release"
            ):
                print(f"Please visit http://localhost:{port}")
            else:
                ipaddress = get("https://api.ipify.org").text
                print(
                    f"Please visit http://{ipaddress}:{port} or http://localhost:{port}"
                )
            loop.run_until_complete(web.wait_for_api_token_setup())
            api_token = web.api_token
        else:
            run_config({}, arguments.data_root)
            importlib.invalidate_caches()
            api_token = get_api_token(arguments)

    if authtoken:
        for phone, token in authtoken.items():
            try:
                clients += [
                    TelegramClient(
                        StringSession(token),
                        api_token.ID,
                        api_token.HASH,
                        connection=conn,
                        proxy=proxy,
                        connection_retries=None,
                    ).start()
                ]
            except ValueError:
                run_config({}, arguments.data_root)
                return

            clients[-1].phone = phone  # for consistency

    if not clients and not phones:
        if arguments.no_auth:
            return

        if web:
            if not web.running.is_set():
                loop.run_until_complete(web.start(arguments.port))
                print("Web mode ready for configuration")  # noqa: T001
                port = str(web.port)
                if platform.system() == "Linux" and not os.path.exists(
                    "/etc/os-release"
                ):
                    print(f"Please visit http://localhost:{port}")
                else:
                    ipaddress = get("https://api.ipify.org").text
                    print(
                        f"Please visit http://{ipaddress}:{port} or http://localhost:{port}"
                    )
            loop.run_until_complete(web.wait_for_clients_setup())
            clients = web.clients
            for client in clients:
                session = SQLiteSession(
                    os.path.join(
                        arguments.data_root
                        or os.path.dirname(utils.get_base_dir()),
                        f"hikka-+{'X' * (len(client.phone) - 5)}{client.phone[-4:]}",
                    )
                )

                session.set_dc(
                    client.session.dc_id,
                    client.session.server_address,
                    client.session.port,
                )
                session.auth_key = client.session.auth_key
                session.save()
                client.session = session
        else:
            try:
                phone = input("Please enter your phone: ")
                phones = {phone.split(":", maxsplit=1)[0]: phone}
            except (EOFError, OSError):
                raise

    for phone_id, phone in phones.items():
        session = os.path.join(
            arguments.data_root or os.path.dirname(utils.get_base_dir()),
            f"hikka{(('-' + phone_id) if phone_id else '')}",
        )

        try:
            client = TelegramClient(
                session,
                api_token.ID,
                api_token.HASH,
                connection=conn,
                proxy=proxy,
                connection_retries=None,
            )

            client.start()
            client.phone = phone

            clients.append(client)
        except sqlite3.OperationalError as ex:
            print(
                f"Error initialising phone {(phone or 'unknown')} {','.join(ex.args)}\n"  # noqa
                ": this is probably your fault. Try checking that this is the only instance running and"
                "that the session is not copied. If that doesn't help, delete the file named"
                f"'hikka-{phone if phone else ''}.session'"
            )
            continue
        except (TypeError, AuthKeyDuplicatedError):
            os.remove(f"{session}.session")
            main()
        except (ValueError, ApiIdInvalidError):
            # Bad API hash/ID
            run_config({}, arguments.data_root)
            return
        except PhoneNumberInvalidError:
            print(
                "Please check the phone number. Use international format (+XX...)"  # noqa: T001
                " and don't put spaces in it."
            )
            continue

    loop.set_exception_handler(
        lambda _, x: logging.error(
            "Exception on event loop! %s",
            x["message"],
            exc_info=x.get("exception", None),
        )
    )

    loops = [amain_wrapper(client, clients, web, arguments) for client in clients]
    loop.run_until_complete(asyncio.gather(*loops))


async def amain_wrapper(client, *args, **kwargs):
    """Wrapper around amain so we don't have to manually clear all locals on soft restart"""
    async with client:
        first = True
        while await amain(first, client, *args, **kwargs):
            first = False


async def amain(first, client, allclients, web, arguments):
    """Entrypoint for async init, run once for each user"""
    setup = arguments.setup
    web_only = arguments.web_only
    client.parse_mode = "HTML"
    await client.start()

    handlers = logging.getLogger().handlers
    db = backend.CloudBackend(client)

    if setup:
        await db.init(lambda e: None)
        jdb = await db.do_download()

        try:
            pdb = json.loads(jdb)
        except (json.decoder.JSONDecodeError, TypeError):
            pdb = {}

        modules = loader.Modules(arguments.use_inline)
        babelfish = Translator([], [], arguments.data_root)
        await babelfish.init(client)
        modules.register_all(babelfish)
        fdb = frontend.Database(db, True)
        await fdb.init()
        modules.send_config(fdb, babelfish)
        await modules.send_ready(
            client, fdb, allclients
        )  # Allow normal init even in setup

        for handler in handlers:
            handler.setLevel(50)

        pdb = run_config(
            pdb,
            arguments.data_root,
            getattr(client, "phone", "Unknown Number"),
            modules,
        )

        if pdb is None:
            await client(DeleteChannelRequest(db.db))
            return

        try:
            await db.do_upload(json.dumps(pdb))
        except MessageNotModifiedError:
            pass

        return False

    db = frontend.Database(
        db, arguments.docker_deps_internal
    )
    await db.init()

    logging.debug("got db")
    logging.info("Loading logging config...")
    for handler in handlers:
        handler.setLevel(db.get(__name__, "loglevel", logging.WARNING))

    to_load = ["loader.py"] if arguments.docker_deps_internal else None

    babelfish = Translator(
        db.get(__name__, "langpacks", []),
        db.get(__name__, "language", ["en"]),
        arguments.data_root,
    )

    await babelfish.init(client)

    modules = loader.Modules()
    no_nickname = arguments.no_nickname

    if not arguments.docker_deps_internal:
        if web:
            await web.add_loader(client, modules, db)
            await web.start_if_ready(len(allclients), arguments.port)
        if not web_only:
            dispatcher = CommandDispatcher(modules, db, no_nickname)
            client.dispatcher = dispatcher
    if arguments.docker_deps_internal:
        # Loader has installed all dependencies
        return  # We are done

    if not web_only:
        await dispatcher.init(client)
        modules.check_security = dispatcher.check_security

        client.add_event_handler(dispatcher.handle_incoming, events.NewMessage)

        client.add_event_handler(dispatcher.handle_incoming, events.ChatAction)

        client.add_event_handler(
            dispatcher.handle_command, events.NewMessage(forwards=False)
        )

        client.add_event_handler(dispatcher.handle_command, events.MessageEdited())

    modules.register_all(babelfish, to_load)

    modules.send_config(db, babelfish)

    await modules.send_ready(client, db, allclients)

    if first:
        try:
            import git

            repo = git.Repo()

            build = repo.heads[0].commit.hexsha
            diff = repo.git.log(["HEAD..origin/master", "--oneline"])
            upd = r"Update required" if diff else r"Up-to-date"

            termux = bool(
                os.popen('echo $PREFIX | grep -o "com.termux"').read()  # skipcq: BAN-B605, BAN-B607
            )
            _platform = "Termux" if termux else "Unknown"

            logo1 = f"""
 
                        █ █ █ █▄▀ █▄▀ ▄▀█
                        █▀█ █ █ █ █ █ █▀█

                     • Build: {build[:7]}
                     • Version: {'.'.join(list(map(str, list(__version__))))}
                     • {upd}
                     • Platform: {_platform}
                     - Started for {(await client.get_me(True)).user_id} -"""

            print(logo1)

            logging.info(f"=== BUILD: {build} ===")
            logging.info(
                f"=== VERSION: {'.'.join(list(map(str, list(__version__))))} ==="
            )
            logging.info(
                f"=== PLATFORM: {_platform} ==="
            )
        except Exception:
            logging.exception(
                "Badge error"
            )  # This part is not so necessary, so if error occures, ignore it

    await client.run_until_disconnected()

    # Previous line will stop code execution, so this part is
    # reached only when client is by some reason disconnected
    # At this point we need to close database
    await db.close()
    return False