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# This module defines systemd unit which runs a script that sends Discrord
# messages. I use it to notify my classmates about who's on cleaning duty. You
# are probably not interested in this.
{
config,
pkgs,
...
}: let
# What script to run.
package = pkgs.duksebot;
in {
config = {
# Create a user to run the server under.
users.users.duksebot = {
description = "Runs daily dukse reminder";
group = "duksebot";
isSystemUser = true;
home = "/srv/duksebot";
createHome = true;
};
users.groups.duksebot = {};
age.secrets.duksebot-env = {
file = ../../../secrets/duksebot.env.age;
owner = config.users.users.duksebot.name;
group = config.users.users.duksebot.group;
mode = "0440";
};
# Create a service which simply runs script. This will be invoked by our timer.
systemd.services.duksebot = {
serviceConfig = {
# We only want to run this once every time the timer triggers it.
Type = "oneshot";
# Run as the user we created above.
User = "duksebot";
Group = "duksebot";
WorkingDirectory = config.users.users.duksebot.home;
};
script = ''
# Load the secret environment variables.
export $(grep -v '^#' ${config.age.secrets.duksebot-env.path} | xargs)
# Kick off.
exec "${package}"/bin/duksebot
'';
};
# Create a timer to activate our oneshot service.
systemd.timers.duksebot = {
wantedBy = ["timers.target"];
partOf = ["duksebot.service"];
after = ["network-online.target"];
wants = ["network-online.target"];
timerConfig = {
OnCalendar = "*-*-* 7:00:00";
Unit = "duksebot.service";
};
};
};
}
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