Access control

[ijwfly]

The bot now includes a feature for access control. Each user is assigned a role (stranger, basic, advanced, admin), and depending on the role, they gain access to the bot. Role management is carried out through a messaging mechanism, with inline buttons sent to the admin for role changes.

Also added some new settings to settings.py:

# User access settings
# You can setup default role for new users and minimum role needed to access bot, see UserRole enum
USER_ROLE_DEFAULT = UserRole.BASIC  # default role assigned to new users
USER_ROLE_BOT_ACCESS = UserRole.BASIC  # minimum role needed to access bot
USER_ROLE_CHOOSE_MODEL = UserRole.BASIC  # minimum role needed to choose model (gpt-3.5/gpt-4)

# Enables chat for user role management
# When enabled sends new user info to USER_ROLE_MANAGER_CHAT_ID with keyboard to choose user role
ENABLE_USER_ROLE_MANAGER_CHAT = False
USER_ROLE_MANAGER_CHAT_ID = -1

You can control whether users have default access to your bot by modifying the USER_ROLE_DEFAULT and USER_ROLE_BOT_ACCESS parameters. The USER_ROLE_CHOOSE_MODEL parameter allows you to decide whether users can change their GPT model. By default, the gpt-3.5-turbo model is used.