Banned users env, access validator, removed silent command, code quality improvements

CHANGELOG.md

@@ -4,7 +4,16 @@ All notable changes to this project will be documented in this file.
 ## [UNRELEASED] - 07.10.2021
 ### Added
 - Inline Query for join/leave/everyone
-- Validator class for group name
+- Group name validator
+- Banned users env
+- Access validator
+- ActionNotAllowedException
+
+### Changed
+- code quality improvements
+
+### Deleted
+- `/silent` command
 
 ### Updated
 - start command content

README.md

@@ -15,7 +15,6 @@
     * [`/leave`](#leave)
     * [`/everyone`](#everyone)
     * [`/groups`](#groups)
-    * [`/silent`](#silent)
     * [`/start`](#start)
 ## Description
 Everyone Mention Bot is simple, but useful telegram bot to gather group members attention.
@@ -62,6 +61,7 @@ docker/logs <container>
   - `MONGODB_PASSWORD` - MongoDB password
   - `MONGODB_HOSTNAME` - MongoDB host (default `database` - container name)
   - `MONGODB_PORT` - MongoDB port (default `27017` - given in docker-compose configuration)
+  - `BANNED_USERS` - user ids separated by comma that are not allowed to use the bot
 
 - `database.env`
   - `MONGO_INITDB_ROOT_USERNAME` - conf from `app.env`
@@ -101,16 +101,6 @@ If user does not have nickname, it will first try to assign his firstname, then
 Will display available groups for this chat as well with members count.
 
 ![groups command example](docs/groups.png)
-
-### `/silent`
-```
-/silent <group_name>
-```
-
-Will display all every member of given group (`default` if not given) but without notyfing them.
-
-![silent command example](docs/silent.png)
-
 ### `/start`
 Start & Help message
 

docker/config/app.dist.env

@@ -6,4 +6,6 @@ MONGODB_DATABASE=
 MONGODB_USERNAME=
 MONGODB_PASSWORD=
 MONGODB_HOSTNAME=localhost
-MONGODB_PORT=27017
+MONGODB_PORT=27017
+
+BANNED_USERS=

src/app.py

@@ -1,27 +1,21 @@
-from logging import Logger
-import logging
 from telegram.ext import Updater
 from telegram.ext.dispatcher import Dispatcher
 
-from logger import Logger
+from bot.handler import *
-from config.credentials import BOT_TOKEN, PORT, WEBHOOK_URL
-from bot.handler import (groupsHandler, joinHandler, mentionHandler, leaveHandler,
-                     silentMentionHandler, startHandler, inlineQueryHandler)
 from bot.handler.abstractHandler import AbstractHandler
+from config.credentials import BOT_TOKEN, PORT, WEBHOOK_URL
+from logger import Logger
 
 
 class App:
     updater: Updater
     dispatcher: Dispatcher
 
-    log_file: str = '/var/log/bot.log'
-    log_format: str = '%(levelname)s-%(asctime)s: %(message)s'
-
     def __init__(self):
         self.updater = Updater(BOT_TOKEN)
 
     def run(self) -> None:
-        self.setup_logging()
+        Logger.register()
         self.register_handlers()
         self.register_webhook()
         
@@ -29,9 +23,7 @@ class App:
 
     def register_handlers(self) -> None:
         for handler in AbstractHandler.__subclasses__():
-            self.updater.dispatcher.add_handler(
+            self.updater.dispatcher.add_handler(handler().bot_handler)
-                handler().get_bot_handler()
-            )
 
     def register_webhook(self) -> None:
         self.updater.start_webhook(
@@ -41,15 +33,9 @@ class App:
             webhook_url="/".join([WEBHOOK_URL, BOT_TOKEN])
         )
 
-        Logger.get_logger(Logger.action_logger).info(
+        Logger.info(f'Webhook configured, listening on {WEBHOOK_URL}/<bot-token>')
-            f'Webhook configured, listening on {WEBHOOK_URL}/<bot-token>'
-        )
 
-    def setup_logging(self) -> None:
-        logger = Logger()
-        logger.setup()
 
 if __name__ == "__main__":
     app = App()
-
     app.run()

src/bot/handler/__init__.py

@@ -0,0 +1,5 @@
+__all__ = [
+    'abstractHandler', 'everyoneHandler', 'groupsHandler',
+    'inlineQueryHandler', 'joinHandler', 'leaveHandler',
+    'startHandler'
+]

src/bot/handler/abstractHandler.py

@@ -1,37 +1,13 @@
 from abc import abstractmethod
 
-from bot.message.messageData import MessageData
+from telegram.ext import Handler
-from logger import Logger
 from telegram.ext.callbackcontext import CallbackContext
-from telegram.ext.handler import Handler
 from telegram.update import Update
-from telegram.utils.helpers import mention_markdown
 
 
-class AbstractHandler: 
+class AbstractHandler:
-    @abstractmethod
+    bot_handler: Handler
-    def get_bot_handler(self) -> Handler: raise Exception('get_bot_handler method is not implemented')
 
     @abstractmethod
-    def handle(self, update: Update, context: CallbackContext) -> None: raise Exception('handle method is not implemented')
+    def handle(self, update: Update, context: CallbackContext) -> None:
-
+        raise Exception('handle method is not implemented')
-    @abstractmethod
-    def log_action(self, message_data: MessageData) -> None: raise Exception('log_action method is not implemented')
-
-    def interpolate_reply(self, reply: str, message_data: MessageData):
-        return reply.format(
-            mention_markdown(message_data.user_id, message_data.username),
-            message_data.group_name
-        )
-
-    def reply_markdown(self, update: Update, message: str) -> None:
-        try:
-            update.effective_message.reply_markdown_v2(text=message)
-        except Exception as err:
-            Logger.error(str(err))
-
-    def reply_html(self, update: Update, html: str) -> None:
-        try:
-            update.effective_message.reply_html(text=html)
-        except Exception as err:
-            Logger.error(str(err))

src/bot/handler/everyoneHandler.py

@@ -0,0 +1,35 @@
+from telegram.ext.callbackcontext import CallbackContext
+from telegram.ext.commandhandler import CommandHandler
+from telegram.update import Update
+
+from bot.handler.abstractHandler import AbstractHandler
+from bot.message.messageData import MessageData
+from bot.message.replier import Replier
+from config.contents import mention_failed
+from logger import Logger
+from repository.userRepository import UserRepository
+from utils.messageBuilder import MessageBuilder
+
+
+class EveryoneHandler(AbstractHandler):
+    bot_handler: CommandHandler
+    user_repository: UserRepository
+    action: str = 'everyone'
+
+    def __init__(self) -> None:
+        self.bot_handler = CommandHandler(self.action, self.handle)
+        self.user_repository = UserRepository()
+
+    def handle(self, update: Update, context: CallbackContext) -> None:
+        try:
+            message_data = MessageData.create_from_arguments(update, context)
+        except Exception as e:
+            return Replier.markdown(update, str(e))
+        
+        users = self.user_repository.get_all_for_chat(message_data.chat_id)
+        
+        if users:
+            Replier.markdown(update, MessageBuilder.mention_message(users))
+            return Logger.action(message_data, self.action)
+
+        Replier.markdown(update, mention_failed)

src/bot/handler/groupsHandler.py

@@ -1,45 +1,36 @@
-from typing import Iterable
-
-import prettytable as pt
-from bot.handler.abstractHandler import AbstractHandler
-from bot.message.messageData import MessageData
-from config.contents import no_groups
-from entity.group import Group
-from logger import Logger
-from repository.groupRepository import GroupRepository
 from telegram.ext.callbackcontext import CallbackContext
 from telegram.ext.commandhandler import CommandHandler
 from telegram.update import Update
 
+from bot.handler.abstractHandler import AbstractHandler
+from bot.message.messageData import MessageData
+from bot.message.replier import Replier
+from config.contents import no_groups
+from exception.notFoundException import NotFoundException
+from logger import Logger
+from repository.groupRepository import GroupRepository
+from utils.messageBuilder import MessageBuilder
+
 
 class GroupsHandler(AbstractHandler):
     bot_handler: CommandHandler
     group_repository: GroupRepository
+    action: str = 'groups'
 
     def __init__(self) -> None:
-        self.bot_handler = CommandHandler('groups', self.handle)
+        self.bot_handler = CommandHandler(self.action, self.handle)
         self.group_repository = GroupRepository()
 
     def handle(self, update: Update, context: CallbackContext) -> None:
-        message_data = MessageData.create_from_arguments(update, context, False)
+        try:
+            message_data = MessageData.create_from_arguments(update, context, False)
+        except Exception as e:
+            return Replier.markdown(update, str(e))
 
-        groups = self.group_repository.get_by_chat_id(message_data.chat_id)
+        try:
+            groups = self.group_repository.get_by_chat_id(message_data.chat_id)
+            Replier.html(update, MessageBuilder.group_message(groups))
 
-        if groups:
+            Logger.action(message_data, self.action)
-            self.reply_html(update, self.build_groups_message(groups))
+        except NotFoundException:
-            return self.log_action(message_data)
+            Replier.markdown(update, no_groups)
-
-        self.reply_markdown(update, no_groups)
-
-    def get_bot_handler(self) -> CommandHandler:
-        return self.bot_handler
-
-    def log_action(self, message_data: MessageData) -> None:
-        Logger.info(f'User {message_data.username} called /groups for {message_data.chat_id}')
-
-    def build_groups_message(self, groups: Iterable[Group]) -> str:
-        resultTable = pt.PrettyTable(['Name', 'Members'])
-
-        resultTable.add_rows([[record.group_name, record.users_count] for record in groups])
-
-        return f'<pre>{str(resultTable)}</pre>'

src/bot/handler/inlineQueryHandler.py

@@ -1,21 +1,29 @@
-from bot.handler.abstractHandler import AbstractHandler
-from entity.group import Group
 from telegram import InlineQueryResultArticle
 from telegram.ext.callbackcontext import CallbackContext
-from telegram.ext.commandhandler import CommandHandler
 from telegram.ext.inlinequeryhandler import \
     InlineQueryHandler as CoreInlineQueryHandler
 from telegram.inline.inputtextmessagecontent import InputTextMessageContent
 from telegram.update import Update
 
+from bot.handler.abstractHandler import AbstractHandler
+from entity.group import Group
+from exception.actionNotAllowedException import ActionNotAllowedException
+from validator.accessValidator import AccessValidator
+
 
 class InlineQueryHandler(AbstractHandler):
-    bot_handler: CommandHandler
+    bot_handler: CoreInlineQueryHandler
 
     def __init__(self) -> None:
         self.bot_handler = CoreInlineQueryHandler(self.handle)
 
     def handle(self, update: Update, context: CallbackContext) -> None:
+        try:
+            AccessValidator.validate(str(update.effective_user.id))
+        except ActionNotAllowedException:
+            update.inline_query.answer([])
+            return
+
         group_display = update.inline_query.query or Group.default_name
         group = '' if group_display == Group.default_name else group_display
 
@@ -41,6 +49,3 @@ class InlineQueryHandler(AbstractHandler):
         ]
 
         update.inline_query.answer(results, cache_time=4800)
-
-    def get_bot_handler(self) -> CoreInlineQueryHandler:
-        return self.bot_handler

src/bot/handler/joinHandler.py

@@ -1,46 +1,41 @@
-from telegram.utils.helpers import mention_markdown
-from bot.handler.abstractHandler import AbstractHandler
-from bot.message.messageData import MessageData
-from config.contents import joined, not_joined
-from exception.invalidArgumentException import InvalidArgumentException
-from exception.notFoundException import NotFoundException
-from logger import Logger
-from repository.userRepository import UserRepository
 from telegram.ext.callbackcontext import CallbackContext
 from telegram.ext.commandhandler import CommandHandler
 from telegram.update import Update
 
+from bot.handler.abstractHandler import AbstractHandler
+from bot.message.messageData import MessageData
+from bot.message.replier import Replier
+from config.contents import joined, not_joined
+from exception.notFoundException import NotFoundException
+from logger import Logger
+from repository.userRepository import UserRepository
+
 
 class JoinHandler(AbstractHandler):
     bot_handler: CommandHandler
     user_repository: UserRepository
+    action: str = 'join'
 
     def __init__(self) -> None:
-        self.bot_handler = CommandHandler('join', self.handle)
+        self.bot_handler = CommandHandler(self.action, self.handle)
         self.user_repository = UserRepository()
 
     def handle(self, update: Update, context: CallbackContext) -> None:
         try:
             message_data = MessageData.create_from_arguments(update, context)
-        except InvalidArgumentException as e:
+        except Exception as e:
-            return self.reply_markdown(update, str(e))
+            return Replier.markdown(update, str(e))
 
         try:
             user = self.user_repository.get_by_id(message_data.user_id)
 
             if user.is_in_chat(message_data.chat_id):
-                return self.reply_markdown(update, self.interpolate_reply(not_joined, message_data))
+                return Replier.markdown(update, Replier.interpolate(not_joined, message_data))
 
             user.add_to_chat(message_data.chat_id)
             self.user_repository.save(user)
         except NotFoundException:
             self.user_repository.save_by_message_data(message_data)
 
-        self.reply_markdown(update, self.interpolate_reply(joined, message_data))
+        Replier.markdown(update, Replier.interpolate(joined, message_data))
-        self.log_action(message_data)
+        Logger.action(message_data, self.action)
-
-    def get_bot_handler(self) -> CommandHandler:
-        return self.bot_handler
-
-    def log_action(self, message_data: MessageData) -> None:
-        Logger.info(f'User {message_data.username} joined {message_data.chat_id}')

src/bot/handler/leaveHandler.py

@@ -1,45 +1,37 @@
-from bot.handler.abstractHandler import AbstractHandler
-from bot.message.messageData import MessageData
-from config.contents import left, not_left
-from exception.invalidArgumentException import InvalidArgumentException
-from exception.notFoundException import NotFoundException
-from logger import Logger
-from repository.userRepository import UserRepository
 from telegram.ext.callbackcontext import CallbackContext
 from telegram.ext.commandhandler import CommandHandler
 from telegram.update import Update
 
+from bot.handler.abstractHandler import AbstractHandler
+from bot.message.messageData import MessageData
+from bot.message.replier import Replier
+from config.contents import left, not_left
+from exception.notFoundException import NotFoundException
+from logger import Logger
+from repository.userRepository import UserRepository
+
 
 class LeaveHandler(AbstractHandler):
     bot_handler: CommandHandler
     user_repository: UserRepository
+    action: str = 'leave'
 
     def __init__(self) -> None:
-        self.bot_handler = CommandHandler('leave', self.handle)
+        self.bot_handler = CommandHandler(self.action, self.handle)
         self.user_repository = UserRepository()
 
     def handle(self, update: Update, context: CallbackContext) -> None:
         try:
             message_data = MessageData.create_from_arguments(update, context)
-        except InvalidArgumentException as e:
+        except Exception as e:
-            return self.reply_markdown(update, str(e))
+            return Replier.markdown(update, str(e))
 
         try:
-            user = self.user_repository.get_by_id(message_data.user_id)
+            user = self.user_repository.get_by_id_and_chat_id(message_data.user_id, message_data.chat_id)
+            user.remove_from_chat(message_data.chat_id)
+            self.user_repository.save(user)
 
-            if not user.is_in_chat(message_data.chat_id):
+            Replier.markdown(update, Replier.interpolate(left, message_data))
-                raise NotFoundException()
+            Logger.action(message_data, self.action)
         except NotFoundException:
-            return self.reply_markdown(update, self.interpolate_reply(not_left, message_data))
+            return Replier.markdown(update, Replier.interpolate(not_left, message_data))
-
-        user.remove_from_chat(message_data.chat_id)
-        self.user_repository.save(user)
-
-        self.reply_markdown(update, self.interpolate_reply(left, message_data))
-        self.log_action(message_data)
-
-    def get_bot_handler(self) -> CommandHandler:
-        return self.bot_handler
-
-    def log_action(self, message_data: MessageData) -> None:
-        Logger.info(f'User {message_data.username} left {message_data.chat_id}')

src/bot/handler/mentionHandler.py

@@ -1,47 +0,0 @@
-from typing import Iterable
-
-from telegram.utils.helpers import mention_markdown
-
-from bot.handler.abstractHandler import AbstractHandler
-from bot.message.messageData import MessageData
-from config.contents import mention_failed
-from entity.user import User
-from exception.invalidArgumentException import InvalidArgumentException
-from logger import Logger
-from repository.userRepository import UserRepository
-from telegram.ext.callbackcontext import CallbackContext
-from telegram.ext.commandhandler import CommandHandler
-from telegram.update import Update
-
-
-class MentionHandler(AbstractHandler):
-    bot_handler: CommandHandler
-    user_repository: UserRepository
-
-    def __init__(self) -> None:
-        self.bot_handler = CommandHandler('everyone', self.handle)
-        self.user_repository = UserRepository()
-
-    def handle(self, update: Update, context: CallbackContext) -> None:
-        try:
-            message_data = MessageData.create_from_arguments(update, context)
-        except InvalidArgumentException as e:
-            return self.reply_markdown(update, str(e))
-        
-        users = self.user_repository.get_all_for_chat(message_data.chat_id)
-        
-        if users:
-            self.reply_markdown(update, self.build_mention_message(users))
-            return self.log_action(message_data)
-
-        self.reply_markdown(update, mention_failed)
-
-    def get_bot_handler(self) -> CommandHandler:
-        return self.bot_handler
-
-    def log_action(self, message_data: MessageData) -> None:
-        Logger.info(f'User {message_data.username} called /everyone for {message_data.chat_id}')
-
-    def build_mention_message(self, users: Iterable[User]) -> str:
-        return ' '.join([mention_markdown(user.user_id, user.username) for user in users])
-

src/bot/handler/silentMentionHandler.py

@@ -1,21 +0,0 @@
-from typing import Iterable
-
-from entity.user import User
-from logger import Logger
-from telegram.ext.commandhandler import CommandHandler
-
-from bot.handler.abstractHandler import AbstractHandler
-from bot.handler.mentionHandler import MentionHandler
-from bot.message.messageData import MessageData
-
-
-class MentionHandler(MentionHandler, AbstractHandler):
-    def __init__(self) -> None:
-        super().__init__()
-        self.bot_handler = CommandHandler('silent', self.handle)
-
-    def build_mention_message(self, users: Iterable[User]) -> str:
-        return ' '.join([user.username for user in users])
-
-    def log_action(self, message_data: MessageData) -> None:
-        Logger.info(f'User {message_data.username} called /silent for {message_data.chat_id}')

src/bot/handler/startHandler.py

@@ -1,25 +1,25 @@
-from config.contents import start_text
-from logger import Logger
 from telegram.ext.callbackcontext import CallbackContext
 from telegram.ext.commandhandler import CommandHandler
 from telegram.update import Update
 
 from bot.handler.abstractHandler import AbstractHandler
 from bot.message.messageData import MessageData
+from bot.message.replier import Replier
+from config.contents import start_text
+from logger import Logger
 
 
 class StartHandler(AbstractHandler):
     bot_handler: CommandHandler
+    action: str = 'start'
 
     def __init__(self) -> None:
-        self.bot_handler = CommandHandler('start', self.handle)
+        self.bot_handler = CommandHandler(self.action, self.handle)
 
     def handle(self, update: Update, context: CallbackContext) -> None:
-        self.reply_markdown(update, start_text)
+        try:
-        self.log_action(MessageData.create_from_arguments(update, context))
+            MessageData.create_from_arguments(update, context)
-
+        except Exception as e:
-    def get_bot_handler(self) -> CommandHandler:
+            return Replier.markdown(update, str(e))
-        return self.bot_handler
+        Replier.markdown(update, start_text)
-
+        Logger.action(MessageData.create_from_arguments(update, context), self.action)
-    def log_action(self, message_data: MessageData) -> None:
-        Logger.info(f'User {message_data.username} called /start for {message_data.chat_id}')

src/bot/message/messageData.py

@@ -1,19 +1,18 @@
 from __future__ import annotations
 
-import re
 from dataclasses import dataclass
 
 import names
-from entity.group import Group
-from exception.invalidArgumentException import InvalidArgumentException
 from telegram.ext.callbackcontext import CallbackContext
 from telegram.update import Update
 
+from entity.group import Group
+from validator.accessValidator import AccessValidator
 from validator.groupNameValidator import GroupNameValidator
 
 
 @dataclass
-class MessageData():
+class MessageData:
     user_id: str
     chat_id: str
     group_name: str
@@ -21,6 +20,9 @@ class MessageData():
 
     @staticmethod
     def create_from_arguments(update: Update, context: CallbackContext, include_group: bool = True) -> MessageData:
+        user_id = str(update.effective_user.id)
+        AccessValidator.validate(user_id)
+
         chat_id = str(update.effective_chat.id)
         group_name = Group.default_name
 
@@ -31,9 +33,7 @@ class MessageData():
 
             if group_name is not Group.default_name:
                 chat_id += f'~{group_name}'
-            
 
-        user_id = str(update.effective_user.id)
         username = update.effective_user.username or update.effective_user.first_name
 
         if not username:

src/bot/message/replier.py

@@ -0,0 +1,29 @@
+from telegram import Update
+from telegram.utils.helpers import mention_markdown
+
+from bot.message.messageData import MessageData
+from logger import Logger
+
+
+class Replier:
+
+    @staticmethod
+    def interpolate(content: str, message_data: MessageData):
+        return content.format(
+            mention_markdown(message_data.user_id, message_data.username),
+            message_data.group_name
+        )
+
+    @staticmethod
+    def markdown(update: Update, message: str) -> None:
+        try:
+            update.effective_message.reply_markdown_v2(message)
+        except Exception as err:
+            Logger.error(str(err))
+
+    @staticmethod
+    def html(update: Update, html: str) -> None:
+        try:
+            update.effective_message.reply_html(html)
+        except Exception as err:
+            Logger.error(str(err))

src/config/contents.py

@@ -5,7 +5,6 @@ not_left = '{} did not join group `{}` before'
 mention_failed = 'There are no users to mention'
 no_groups = 'There are no groups for this chat'
 
-
 start_text = """
 Hello there
 I am @everyone\_mention\_bot
@@ -32,4 +31,4 @@ To display all members in a group:
 
 You can also try to tag me @everyone\_mention\_bot and then enter group name
 Possible results will be displayed
-"""
+"""

src/config/credentials.py

@@ -13,3 +13,5 @@ MONGODB_USERNAME = os.environ['MONGODB_USERNAME']
 MONGODB_PASSWORD = os.environ['MONGODB_PASSWORD']
 MONGODB_HOSTNAME = os.environ['MONGODB_HOSTNAME']
 MONGODB_PORT = os.environ['MONGODB_PORT']
+
+BANNED_USERS = os.environ['BANNED_USERS'].split(',') or []

src/database/client.py

@@ -1,13 +1,14 @@
 from urllib.parse import quote_plus
 
+from pymongo import MongoClient
+from pymongo.database import Database
+
 from config.credentials import (MONGODB_DATABASE, MONGODB_HOSTNAME,
                                 MONGODB_PASSWORD, MONGODB_PORT,
                                 MONGODB_USERNAME)
-from pymongo import MongoClient
-from pymongo.database import Database
 
 
-class Client():
+class Client:
     mongo_client: MongoClient
     database: Database
 
@@ -32,7 +33,7 @@ class Client():
     def update_one(self, collection: str, filter: dict, data: dict) -> None:
         self.database.get_collection(collection).update_one(
             filter, 
-            { "$set" : data }
+            {"$set": data}
         )
 
     def aggregate(self, collection, pipeline: list):

src/entity/group.py

@@ -4,7 +4,7 @@ from dataclasses import dataclass
 
 
 @dataclass
-class Group():
+class Group:
     chat_id: str
     group_name: str
     users_count: int

src/entity/user.py

@@ -1,14 +1,14 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from typing import Iterable
+from typing import List
 
 
 @dataclass
-class User():
+class User:
     user_id: str
     username: str
-    chats: Iterable[str]
+    chats: List[str]
 
     collection: str = 'users'
     id_index: str = '_id'

src/exception/actionNotAllowedException.py

@@ -0,0 +1,2 @@
+class ActionNotAllowedException(Exception):
+    pass

src/logger.py

@@ -3,7 +3,10 @@ from __future__ import annotations
 import logging
 import os
 
+from bot.message.messageData import MessageData
 
+
+# noinspection SpellCheckingInspection
 class Logger:
     action_logger: str = 'action-logger'
     action_logger_file: str = '/var/log/bot/action.log'
@@ -11,9 +14,10 @@ class Logger:
     main_logger: str = 'main-logger'
     main_logger_file: str = '/var/log/bot/app.log'
 
-    formatter: str = logging.Formatter('%(asctime)s[%(levelname)s]: %(message)s')
+    # noinspection SpellCheckingInspection
+    formatter: logging.Formatter = logging.Formatter('%(asctime)s[%(levelname)s]: %(message)s')
 
-    def setup(self) -> None:
+    def __init__(self):
         self.configure(self.action_logger, self.action_logger_file, logging.INFO)
         self.configure(self.main_logger, self.main_logger_file, logging.ERROR)
 
@@ -32,12 +36,22 @@ class Logger:
         logger.addHandler(file_handler)
         logger.addHandler(stream_handler)
 
+    @staticmethod
+    def register() -> None:
+        Logger()
+
     @staticmethod
     def get_logger(logger_name) -> logging.Logger:
         return logging.getLogger(logger_name)
 
+    @staticmethod
     def info(message: str) -> None:
         Logger.get_logger(Logger.action_logger).info(message)
 
+    @staticmethod
     def error(message: str) -> None:
-        Logger.get_logger(Logger.main_logger).error(message)
+        Logger.get_logger(Logger.main_logger).error(message)
+
+    @staticmethod
+    def action(message_data: MessageData, action: str) -> None:
+        Logger.info(f'User {message_data.username}({message_data.user_id}) called {action.upper()} for {message_data.chat_id}')

src/repository/groupRepository.py

@@ -1,13 +1,13 @@
-import itertools
 import re
 from typing import Iterable
 
 from database.client import Client
 from entity.group import Group
 from entity.user import User
+from exception.notFoundException import NotFoundException
 
 
-class GroupRepository():
+class GroupRepository:
     client: Client
 
     count: str = 'count'
@@ -19,22 +19,22 @@ class GroupRepository():
         groups = self.client.aggregate(
             User.collection,
             [
-                { "$unwind": f'${User.chats_index}' },
+                {"$unwind": f'${User.chats_index}'},
                 {
                     "$match": {
-                        User.chats_index: { "$regex": re.compile(f'^{chat_id}.*$') },
+                        User.chats_index: {"$regex": re.compile(f'^{chat_id}.*$')},
                     },
                 },
                 {
                     "$group": {
                         "_id": {
-                            "$last": { "$split": [f'${User.chats_index}', "~"] },
+                            "$last": {"$split": [f'${User.chats_index}', "~"]},
                         },
-                        self.count: { "$count": {} },
+                        self.count: {"$count": {}},
                     },
                 },
                 {
-                    "$sort": { '_id': 1 }
+                    "$sort": {'_id': 1}
                 }
             ]
         )
@@ -50,4 +50,7 @@ class GroupRepository():
                 Group(chat_id, group_name, group[self.count])
             )
 
+        if not groups:
+            raise NotFoundException
+
         return result

src/repository/userRepository.py

@@ -1,4 +1,4 @@
-from typing import Iterable, Optional
+from typing import Iterable
 
 from bot.message.messageData import MessageData
 from database.client import Client
@@ -6,57 +6,65 @@ from entity.user import User
 from exception.notFoundException import NotFoundException
 
 
-class UserRepository():
+class UserRepository:
     client: Client
 
     def __init__(self) -> None:
         self.client = Client()
 
-    def get_by_id(self, id: str) -> User:
+    def get_by_id(self, user_id: str) -> User:
         user = self.client.find_one(
             User.collection,
             {
-                User.id_index: id
+                User.id_index: user_id
             }
         )
 
         if not user:
-            raise NotFoundException(f'Could not find user with "{id}" id')
+            raise NotFoundException(f'Could not find user with "{user_id}" id')
 
         return User(
             user[User.id_index],
             user[User.username_index],
             user[User.chats_index]
         )
-        
+
+    def get_by_id_and_chat_id(self, user_id: str, chat_id: str) -> User:
+        user = self.get_by_id(user_id)
+
+        if not user.is_in_chat(chat_id):
+            raise NotFoundException
+
+        return user
+
     def save(self, user: User) -> None:
         self.client.update_one(
             User.collection,
-            { User.id_index: user.user_id },
+            {User.id_index: user.user_id},
             user.to_mongo_document()
         )
 
     def save_by_message_data(self, data: MessageData) -> None:
         self.client.insert_one(
-            User.collection, 
+            User.collection,
             {
                 User.id_index: data.user_id,
                 User.username_index: data.username,
                 User.chats_index: [data.chat_id]
             }
         )
-    
+
     def get_all_for_chat(self, chat_id: str) -> Iterable[User]:
         result = []
         users = self.client.find_many(
             User.collection,
             {
                 User.chats_index: {
-                    "$in" : [chat_id]
+                    "$in": [chat_id]
                 }
             }
         )
-        
+
         for record in users:
             result.append(User.from_mongo_document(record))
 

src/utils/messageBuilder.py

@@ -0,0 +1,21 @@
+from typing import Iterable
+
+from prettytable import prettytable
+from telegram.utils.helpers import mention_markdown
+
+from entity.group import Group
+from entity.user import User
+
+
+class MessageBuilder:
+    @staticmethod
+    def group_message(groups: Iterable[Group]) -> str:
+        table = prettytable.PrettyTable(['Name', 'Members'])
+
+        table.add_rows([[record.group_name, record.users_count] for record in groups])
+
+        return f'<pre>{str(table)}</pre>'
+
+    @staticmethod
+    def mention_message(users: Iterable[User]) -> str:
+        return ' '.join([mention_markdown(user.user_id, user.username) for user in users])

src/validator/accessValidator.py

@@ -0,0 +1,10 @@
+from config.credentials import BANNED_USERS
+from exception.actionNotAllowedException import ActionNotAllowedException
+
+
+class AccessValidator:
+
+    @staticmethod
+    def validate(user_id: str) -> None:
+        if user_id in BANNED_USERS:
+            raise ActionNotAllowedException('You are banned')