Ein Telegram Abrechnungsbot

For testing create new virtualenv and install requirements.

mkdir env
virtualenv -p python3 env
source env/bin/activate
pip install -r requirements.txt

Development

Start python and import test. To reload the module:

from importlib import reload
reload(test)

For automated unit-testing:

cd abrechnung
python -m unittest discover

Build and run docker image

docker build -t abrechnung .
docker run abrechnung --name abrechnung

docker-compose build
docker-compose up -d

Bot commands

Here are all commands listed.

• start
  • This registers a new global group
  • This has to save the group id
• add_account [name]
  • This command will add a new account with an empty balance
• add_event [cost] [payer] [participants]
  • This command adds a new event and debits the accounts
• do_transaction [amount] [source] [destination]
  • This command can be used if someone pays money to another member
• show_account_data
  • This command will show the current account balances
• calculate_balancing
  • This command will calculate the money transfers needed to balance the accounts
• do_balancing
  • This command will calculate and print the transfer operations
  • Will reset all account balances to 0

Telegram BotFather info

start - start - Create or recreate group
add_account - add_account [name] - Create new account for name
add_event - add_event [amount] [payer] [remaining participants] - This will add a new event and debit the accounts
do_transaction - do_transaction [amount] [source] [destination]
show_account_data - show_account_data - This will print the current account data
calculate_balancing - calculate_balancing - This will calculate the resulting transactions