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Description:

pepubot 0.1.0

PePuBot is a Slack bot that can arrange Friday bottle lotteries on a
Slack channel with a specific set of rules.

The Name
PePu comes from Finnish words “Perjantai Pullo”, which means “Friday
Bottle”. Bot is shortened from Robot, as you may know. ;-)

The Rules

PePu is arranged in rounds, usually a round is arranged on every
Friday, but it’s also possible to arrange a round on any other day
or to skip rounds.
When a PePu round is running in a channel anyone in the channel can
attend and get a new ticket to the lottery box by posting a funny
picture or video to the channel.
Each attendee may get at most one new ticket to the lottery box per a
PePu round. If the same person posts several pictures or videos to
the PePu channel, only the first one is awarded with a ticket.
When the round is ended, the winner will be selected by randomly
picking one of the tickets from the lottery box. Then all tickets of
the winner will be removed from the lottery box and the rest of the
tickets will be stored for the next PePu round. I.e. your chances to
win increase on every round until you win.
Anyone can arrange a PePu round, but the person who starts the round
should also arrange the prize bottle.
The person who starts the round also decides when the round ends and
is responsible to do so before the day ends.

Requirements
To run PePuBot you need Python 3.7 and a Slack account.

Installing

Add a new app to Slack in https://api.slack.com/apps and add a bot
for that app.
Enable the following permissions for the app:

bot

To act as a bot user in Slack

chat:write:bot

For writing to the channel

reactions:write

For marking ticket additions with reactions to the picture or
video message.

users:read

For filling user names to the tickets

Install PePuBot and its dependencies to a Python virtual environment
or to a Docker container or using whatever isolation you prefer. You
may do this with a command like:
pip install .

Copy the “Bot User OAuth Access Token” value to environment variable
named SLACK_API_TOKEN or to a line in a configuration file named
pepubot.conf. There is a pepubot.conf.template which you can
use as a base.

Note: Each configuration option can be set in the configuration
file or with an environment variable with the same name. If a
variable is defined in both places, the value will be read from the
environment.

Start the PePuBot with the script installed by Pip:
pepubot
By default the configuration file will be read from the current
working directory by name pepubot.conf, but alternative location
can be given via command line argument:
pepubot --config-file /path/to/pepubot.conf