Link pre-moderation bot for StableUnit telegram chat

Runs on Python 3.5 and up. Install all dependencies by executing:

pip3 install -r requirements.txt

• Search for @BotFather in Telegram and start it
• Create a new bot by sending command /newbot
• Type and send your new bot's public name (StablePenguinBot for example)
• Type and send your new bot's user name (StablePenguinBot for example)
• BotFather will reply with a token like XXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
• Paste that token in your .bashrc like so:

export PINGUINO_BOT_TOKEN="PASTE:THETOKENHERE"

and restart bash

• Alternatively, you can paste it raw in tokens.py on your local machine
• Run the bot in debug mode: python3 bot.py --debug and add it to your chat
• Send the /start command, bot will reply with your chat's ID
• Paste it (with -!) to chat_id variable in config.py
• Restart the bot in normal mode.

• If a user joins this chat for the first time, the bot greets him/her and suggests to follow the rules
• If a user comes back to the chat, the bots welcomes him/her back
• If a user posts message with a link for the first time, the bot blocks it and sends to chat's admins for pre-moderation.

Please note, that the bot must have admin rights in order to function properly.

• accept user's message and add him to a whitelist;
• decline user's message for this particular link if the user is not whitelisted;
• add the user to a blacklist (permanently disable the user's ability to post any links to the chat);
• permanently ban the user.

• /start: outputs id of a current chat
• /get_admins: outputs the information about a current chat's and bot's administrators and updates it to the database (should be called after the setup)
• /wl_add * (in reply to a user's message): adds the user to the whitelist
• /wl_del * (in reply to a user's message): removes the user from the whitelist, so his future links will require pre-moderation
• /bl_add * (in reply to a user's message): adds the user to the blacklist
• /bl_del * (in reply to a user's message): removes the user from the blacklist, so his future links will require pre-moderation
• /uid * (in reply to user's message): outputs the user's Telegram id number
• /db_stat *: outputs the current state of a database of chat members, whitelisted and blacklisted members
• /db_flush 'parameter' *: flushes any of the database's storages ('members'/'admins'/'whitelist'/'blacklist') or the entire database ('all')
• /kek: outputs text and other memes
• /kek_add * (in reply to a user's message): adds user's message (if it's a text, a sticker, a photo, an audio or a voice file) to list of available keks
• /help: outputs help.

* = command is for chat's admins only.