Deployment

Create .env file from .env.example and fill in the secret.
docker-compose up -d --build to start the server.
Go to @EVNCommUnion_bot and send /start to start the bot.

Code structure

`telegram_bot_app`

Bot is described in telegram_bot_app/bot.py. With a simple class with start method to demonstrate some workflows.

Working with the database

Add database related code are in telegram_bot_app/redis_tools.py. The database is Redis. I've created a simple wrapper for Redis, so you can use it like a dictionary.

 if not redis_tools.check_if_user_exists(redis_connection, database_user_key, redis_tools.ALL_USERS):
     redis_tools.add_user_to_group(redis_connection, database_user_key, redis_tools.ALL_USERS)

To check if user exisis in built in key ALL_USERS and add user to it if not.

Key standards

Telegram username is used as a user key in database.

For my own keys I use _{key}_ format. To avoid collision with telegram usernames. For example:

ALL_USERS = "_telegram_users_"
GLOBAL_DATABASE_LOCK = "_global_database_lock_"

For storing some user data you can use {user}_conversation as a key for conversation with a user. For example, if user with id 123 is in conversation with bot, you can store his data in 123_conversation key.

Requirements

Install Docker and Docker Compose.