├── requirements.txt ├── config.py ├── README.md ├── .gitignore ├── bot.py └── LICENSE /requirements.txt: -------------------------------------------------------------------------------- 1 | python-telegram-bot<13 2 | pickledb<1 3 | -------------------------------------------------------------------------------- /config.py: -------------------------------------------------------------------------------- 1 | BOTNAME = "usernameofbot" 2 | TOKEN = "TOKEN" 3 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Welcome Bot 2 | 3 | #### A Python Telegram Bot that greets everyone who joins a group chat 4 | 5 | It uses the [python-telegram-bot](https://github.com/python-telegram-bot/python-telegram-bot) library and [pickledb](https://bitbucket.org/patx/pickledb) for basic persistence. 6 | 7 | The file is prepared to be run by anyone by filling out the blanks in the configuration. The bot currently runs on [@jh0ker_welcomebot](https://telegram.me/jh0ker_welcomebot) 8 | 9 | ## Requirements 10 | 11 | - Python 3 (tested with version 3.8) 12 | - Dependencies listed in `requirements.txt` 13 | 14 | ## How to use 15 | 16 | - Clone the repo 17 | - Install the requirements from `requirements.txt` (using a virtualenv is recommended) 18 | - Edit `TOKEN` and `BOTNAME` in `config.py` 19 | - Follow Bot instructions 20 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | 5 | # C extensions 6 | *.so 7 | 8 | # Distribution / packaging 9 | .Python 10 | env/ 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | *.egg-info/ 23 | .installed.cfg 24 | *.egg 25 | 26 | # PyInstaller 27 | # Usually these files are written by a python script from a template 28 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 29 | *.manifest 30 | *.spec 31 | 32 | # Installer logs 33 | pip-log.txt 34 | pip-delete-this-directory.txt 35 | 36 | # Unit test / coverage reports 37 | htmlcov/ 38 | .tox/ 39 | .coverage 40 | .coverage.* 41 | .cache 42 | nosetests.xml 43 | coverage.xml 44 | *,cover 45 | 46 | # Translations 47 | *.mo 48 | *.pot 49 | 50 | # Django stuff: 51 | *.log 52 | 53 | # Sphinx documentation 54 | docs/_build/ 55 | 56 | # PyBuilder 57 | target/ 58 | 59 | venv/ 60 | .vscode/ 61 | bot.db 62 | -------------------------------------------------------------------------------- /bot.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | import logging 3 | from time import sleep 4 | import traceback 5 | import sys 6 | from html import escape 7 | 8 | import pickledb 9 | 10 | from telegram import ParseMode, TelegramError, Update 11 | from telegram.ext import Updater, MessageHandler, CommandHandler, Filters 12 | from telegram.ext.dispatcher import run_async 13 | 14 | from config import BOTNAME, TOKEN 15 | 16 | help_text = ( 17 | "Welcomes everyone that enters a group chat that this bot is a " 18 | "part of. By default, only the person who invited the bot into " 19 | "the group is able to change settings.\nCommands:\n\n" 20 | "/welcome - Set welcome message\n" 21 | "/goodbye - Set goodbye message\n" 22 | "/disable\\_goodbye - Disable the goodbye message\n" 23 | "/lock - Only the person who invited the bot can change messages\n" 24 | "/unlock - Everyone can change messages\n" 25 | '/quiet - Disable "Sorry, only the person who..." ' 26 | "& help messages\n" 27 | '/unquiet - Enable "Sorry, only the person who..." ' 28 | "& help messages\n\n" 29 | "You can use _$username_ and _$title_ as placeholders when setting" 30 | " messages. [HTML formatting]" 31 | "(https://core.telegram.org/bots/api#formatting-options) " 32 | "is also supported.\n" 33 | ) 34 | 35 | """ 36 | Create database object 37 | Database schema: 38 | -> welcome message 39 | _bye -> goodbye message 40 | _adm -> user id of the user who invited the bot 41 | _lck -> boolean if the bot is locked or unlocked 42 | _quiet -> boolean if the bot is quieted 43 | 44 | chats -> list of chat ids where the bot has received messages in. 45 | """ 46 | # Create database object 47 | db = pickledb.load("bot.db", True) 48 | 49 | if not db.get("chats"): 50 | db.set("chats", []) 51 | 52 | # Set up logging 53 | root = logging.getLogger() 54 | root.setLevel(logging.INFO) 55 | 56 | logging.basicConfig( 57 | level=logging.INFO, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s" 58 | ) 59 | 60 | logger = logging.getLogger(__name__) 61 | 62 | 63 | @run_async 64 | def send_async(context, *args, **kwargs): 65 | context.bot.send_message(*args, **kwargs) 66 | 67 | 68 | def check(update, context, override_lock=None): 69 | """ 70 | Perform some checks on the update. If checks were successful, returns True, 71 | else sends an error message to the chat and returns False. 72 | """ 73 | 74 | chat_id = update.message.chat_id 75 | chat_str = str(chat_id) 76 | 77 | if chat_id > 0: 78 | send_async( 79 | context, chat_id=chat_id, text="Please add me to a group first!", 80 | ) 81 | return False 82 | 83 | locked = override_lock if override_lock is not None else db.get(chat_str + "_lck") 84 | 85 | if locked and db.get(chat_str + "_adm") != update.message.from_user.id: 86 | if not db.get(chat_str + "_quiet"): 87 | send_async( 88 | context, 89 | chat_id=chat_id, 90 | text="Sorry, only the person who invited me can do that.", 91 | ) 92 | return False 93 | 94 | return True 95 | 96 | 97 | # Welcome a user to the chat 98 | def welcome(update, context, new_member): 99 | """ Welcomes a user to the chat """ 100 | 101 | message = update.message 102 | chat_id = message.chat.id 103 | logger.info( 104 | "%s joined to chat %d (%s)", 105 | escape(new_member.first_name), 106 | chat_id, 107 | escape(message.chat.title), 108 | ) 109 | 110 | # Pull the custom message for this chat from the database 111 | text = db.get(str(chat_id)) 112 | 113 | # Use default message if there's no custom one set 114 | if text is None: 115 | text = "Hello $username! Welcome to $title 😊" 116 | 117 | # Replace placeholders and send message 118 | text = text.replace("$username", new_member.first_name) 119 | text = text.replace("$title", message.chat.title) 120 | send_async(context, chat_id=chat_id, text=text, parse_mode=ParseMode.HTML) 121 | 122 | 123 | # Welcome a user to the chat 124 | def goodbye(update, context): 125 | """ Sends goodbye message when a user left the chat """ 126 | 127 | message = update.message 128 | chat_id = message.chat.id 129 | logger.info( 130 | "%s left chat %d (%s)", 131 | escape(message.left_chat_member.first_name), 132 | chat_id, 133 | escape(message.chat.title), 134 | ) 135 | 136 | # Pull the custom message for this chat from the database 137 | text = db.get(str(chat_id) + "_bye") 138 | 139 | # Goodbye was disabled 140 | if text is False: 141 | return 142 | 143 | # Use default message if there's no custom one set 144 | if text is None: 145 | text = "Goodbye, $username!" 146 | 147 | # Replace placeholders and send message 148 | text = text.replace("$username", message.left_chat_member.first_name) 149 | text = text.replace("$title", message.chat.title) 150 | send_async(context, chat_id=chat_id, text=text, parse_mode=ParseMode.HTML) 151 | 152 | 153 | # Introduce the bot to a chat its been added to 154 | def introduce(update, context): 155 | """ 156 | Introduces the bot to a chat its been added to and saves the user id of the 157 | user who invited us. 158 | """ 159 | 160 | chat_id = update.message.chat.id 161 | invited = update.message.from_user.id 162 | 163 | logger.info( 164 | "Invited by %s to chat %d (%s)", invited, chat_id, update.message.chat.title, 165 | ) 166 | 167 | db.set(str(chat_id) + "_adm", invited) 168 | db.set(str(chat_id) + "_lck", True) 169 | 170 | text = ( 171 | f"Hello {update.message.chat.title}! " 172 | "I will now greet anyone who joins this chat with a " 173 | "nice message 😊 \nCheck the /help command for more info!" 174 | ) 175 | send_async(context, chat_id=chat_id, text=text) 176 | 177 | 178 | # Print help text 179 | def help(update, context): 180 | """ Prints help text """ 181 | 182 | chat_id = update.message.chat.id 183 | chat_str = str(chat_id) 184 | if ( 185 | not db.get(chat_str + "_quiet") 186 | or db.get(chat_str + "_adm") == update.message.from_user.id 187 | ): 188 | send_async( 189 | context, 190 | chat_id=chat_id, 191 | text=help_text, 192 | parse_mode=ParseMode.MARKDOWN, 193 | disable_web_page_preview=True, 194 | ) 195 | 196 | 197 | # Set custom message 198 | def set_welcome(update, context): 199 | """ Sets custom welcome message """ 200 | 201 | chat_id = update.message.chat.id 202 | 203 | # Check admin privilege and group context 204 | if not check(update, context): 205 | return 206 | 207 | # Split message into words and remove mentions of the bot 208 | message = update.message.text.partition(" ")[2] 209 | 210 | # Only continue if there's a message 211 | if not message: 212 | send_async( 213 | context, 214 | chat_id=chat_id, 215 | text="You need to send a message, too! For example:\n" 216 | "/welcome Hello $username, welcome to " 217 | "$title!", 218 | parse_mode=ParseMode.HTML, 219 | ) 220 | return 221 | 222 | # Put message into database 223 | db.set(str(chat_id), message) 224 | 225 | send_async(context, chat_id=chat_id, text="Got it!") 226 | 227 | 228 | # Set custom message 229 | def set_goodbye(update, context): 230 | """ Enables and sets custom goodbye message """ 231 | 232 | chat_id = update.message.chat.id 233 | 234 | # Check admin privilege and group context 235 | if not check(update, context): 236 | return 237 | 238 | # Split message into words and remove mentions of the bot 239 | message = update.message.text.partition(" ")[2] 240 | 241 | # Only continue if there's a message 242 | if not message: 243 | send_async( 244 | context, 245 | chat_id=chat_id, 246 | text="You need to send a message, too! For example:\n" 247 | "/goodbye Goodbye, $username!", 248 | parse_mode=ParseMode.HTML, 249 | ) 250 | return 251 | 252 | # Put message into database 253 | db.set(str(chat_id) + "_bye", message) 254 | 255 | send_async(context, chat_id=chat_id, text="Got it!") 256 | 257 | 258 | def disable_goodbye(update, context): 259 | """ Disables the goodbye message """ 260 | 261 | chat_id = update.message.chat.id 262 | 263 | # Check admin privilege and group context 264 | if not check(update, context): 265 | return 266 | 267 | # Disable goodbye message 268 | db.set(str(chat_id) + "_bye", False) 269 | 270 | send_async(context, chat_id=chat_id, text="Got it!") 271 | 272 | 273 | def lock(update, context): 274 | """ Locks the chat, so only the invitee can change settings """ 275 | 276 | chat_id = update.message.chat.id 277 | 278 | # Check admin privilege and group context 279 | if not check(update, context, override_lock=True): 280 | return 281 | 282 | # Lock the bot for this chat 283 | db.set(str(chat_id) + "_lck", True) 284 | 285 | send_async(context, chat_id=chat_id, text="Got it!") 286 | 287 | 288 | def quiet(update, context): 289 | """ Quiets the chat, so no error messages will be sent """ 290 | 291 | chat_id = update.message.chat.id 292 | 293 | # Check admin privilege and group context 294 | if not check(update, context, override_lock=True): 295 | return 296 | 297 | # Lock the bot for this chat 298 | db.set(str(chat_id) + "_quiet", True) 299 | 300 | send_async(context, chat_id=chat_id, text="Got it!") 301 | 302 | 303 | def unquiet(update, context): 304 | """ Unquiets the chat """ 305 | 306 | chat_id = update.message.chat.id 307 | 308 | # Check admin privilege and group context 309 | if not check(update, context, override_lock=True): 310 | return 311 | 312 | # Lock the bot for this chat 313 | db.set(str(chat_id) + "_quiet", False) 314 | 315 | send_async(context, chat_id=chat_id, text="Got it!") 316 | 317 | 318 | def unlock(update, context): 319 | """ Unlocks the chat, so everyone can change settings """ 320 | 321 | chat_id = update.message.chat.id 322 | 323 | # Check admin privilege and group context 324 | if not check(update, context): 325 | return 326 | 327 | # Unlock the bot for this chat 328 | db.set(str(chat_id) + "_lck", False) 329 | 330 | send_async(context, chat_id=chat_id, text="Got it!") 331 | 332 | 333 | def empty_message(update, context): 334 | """ 335 | Empty messages could be status messages, so we check them if there is a new 336 | group member, someone left the chat or if the bot has been added somewhere. 337 | """ 338 | 339 | # Keep chatlist 340 | chats = db.get("chats") 341 | 342 | if update.message.chat.id not in chats: 343 | chats.append(update.message.chat.id) 344 | db.set("chats", chats) 345 | logger.info("I have been added to %d chats" % len(chats)) 346 | 347 | if update.message.new_chat_members: 348 | for new_member in update.message.new_chat_members: 349 | # Bot was added to a group chat 350 | if new_member.username == BOTNAME: 351 | return introduce(update, context) 352 | # Another user joined the chat 353 | else: 354 | return welcome(update, context, new_member) 355 | 356 | # Someone left the chat 357 | elif update.message.left_chat_member is not None: 358 | if update.message.left_chat_member.username != BOTNAME: 359 | return goodbye(update, context) 360 | 361 | 362 | def error(update, context, **kwargs): 363 | """ Error handling """ 364 | error = context.error 365 | 366 | try: 367 | if isinstance(error, TelegramError) and ( 368 | error.message == "Unauthorized" 369 | or error.message == "Have no rights to send a message" 370 | or "PEER_ID_INVALID" in error.message 371 | ): 372 | chats = db.get("chats") 373 | chats.remove(update.message.chat_id) 374 | db.set("chats", chats) 375 | logger.info("Removed chat_id %s from chat list" % update.message.chat_id) 376 | else: 377 | logger.error("An error (%s) occurred: %s" % (type(error), error.message)) 378 | except: 379 | pass 380 | 381 | 382 | def main(): 383 | # Create the Updater and pass it your bot's token. 384 | updater = Updater(TOKEN, workers=10, use_context=True) 385 | 386 | # Get the dispatcher to register handlers 387 | dp = updater.dispatcher 388 | 389 | dp.add_handler(CommandHandler("start", help)) 390 | dp.add_handler(CommandHandler("help", help)) 391 | dp.add_handler(CommandHandler("welcome", set_welcome)) 392 | dp.add_handler(CommandHandler("goodbye", set_goodbye)) 393 | dp.add_handler(CommandHandler("disable_goodbye", disable_goodbye)) 394 | dp.add_handler(CommandHandler("lock", lock)) 395 | dp.add_handler(CommandHandler("unlock", unlock)) 396 | dp.add_handler(CommandHandler("quiet", quiet)) 397 | dp.add_handler(CommandHandler("unquiet", unquiet)) 398 | 399 | dp.add_handler(MessageHandler(Filters.status_update, empty_message)) 400 | 401 | dp.add_error_handler(error) 402 | 403 | updater.start_polling(timeout=30, clean=True) 404 | updater.idle() 405 | 406 | 407 | if __name__ == "__main__": 408 | main() 409 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | {description} 294 | Copyright (C) {year} {fullname} 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | 341 | --------------------------------------------------------------------------------