Curry Bot

Installation

You first need the haskell toolchain to build the program, I recommend installing it through GHCup.

Once that's intalled, you can run

ghcup tui

and install GHC and stack. When that's done, just run

stack install

to build and install the project.

Complete the config.yaml using the example as reference. The bot searches for its config in ~/.config/curry_bot.

mkdir ~/.config/curry_bot
cp config/config.yaml.example ~/.config/curry_bot/config.yaml

Alternatively, you can keep it in this folder and link it.

cp config/config.yaml.example config/config.yaml
ln config/config.yaml ~/.config/curry_bot/config.yaml

Then you need to have the database with its proper schema running, which can be done with the compose file.

docker compose up -d
psql -h 10.7.0.2 -U postgres curry_bot < sql/schema.sql

Usage

Once the application is installed, it can be ran with

curry-bot-cli update-people && curry-bot-cli remind-birthday

If that works, consider adding a service that runs it daily. The database already has a check that stops it from running multiple times in a single day.

You can configure said service with something like

# /etc/systemd/system/remind-birthday.service
[Unit]
Description=Curry Bot Birthday Reminder Service
After=network.target

[Service]
Type=oneshot
ExecStart=/home/tmiguez/.local/bin/curry-bot-cli update-people
ExecStart=/home/tmiguez/.local/bin/curry-bot-cli remind-birthday

[Install]
WantedBy=default.target

# /etc/systemd/system/remind-birthday.timer
[Unit]
Description=Run Curry Bot Birthday Reminder every hour at 20 minutes past the hour

[Timer]
OnCalendar=*-*-* *:20:00
Persistent=true

[Install]
WantedBy=timers.target

and enabling it with

systemctl enable --now remind-birthday.timer

References

- Reading YAML: https://stackoverflow.com/questions/13059806/reading-yaml-in-haskell
- Aeson tutorial: https://www.fpcomplete.com/haskell/library/aeson/
- Accesing configuration: https://stackoverflow.com/questions/6081075/access-the-configuration-parameters-through-a-monad
- DBs in Haskell: https://book.realworldhaskell.org/read/using-databases.html
- Extra users Slack: https://api.slack.com/enterprise/grid/testing#complete_the_org_setup
- Developers Slack: https://api.slack.com/developer-program/sandboxes