mensa-tts/module.nix
2024-12-18 18:16:35 +01:00

118 lines
2.9 KiB
Nix

{ lib, config, pkgs, mensa-tts-pkgs, ... }:
with lib;
let
# Shorter name to access final settings a
# user of hello.nix module HAS ACTUALLY SET.
# cfg is a typical convention.
cfg = config.services.mensa-tts;
in
{
options.services.mensa-tts = {
enable = mkEnableOption "mensa-tts service";
package = mkOption {
default = mensa-tts-pkgs.x86_64-linux.default;
type = types.package;
description = "mensa-tts packages to use. Needed to fix crosscompilation issues.";
};
user = mkOption {
type = types.str;
default = "mensa-tts";
description = mdDoc "User to run the mensa-tts script.";
};
group = mkOption {
type = types.str;
default = "mensa-tts";
description = mdDoc "Group for the mensa-tts user.";
};
time = mkOption {
type = types.str;
default = "Mon..Fri 11:10:00 Europe/Berlin";
description = mdDoc "Time to trigger the mensa-tts service. Uses systemd OnCalendar format.";
};
local-address = mkOption {
type = types.str;
default = "127.0.0.1";
description = mdDoc "Local address to send the UDP frames from";
};
local-port = mkOption {
type = types.str;
default = "4810";
description = mdDoc "Local port to send the UDP frames from";
};
remote-address = mkOption {
type = types.str;
default = "127.0.0.1";
description = mdDoc "Remote address to send the UDP frames to";
};
remote-port = mkOption {
type = types.str;
default = "3810";
description = mdDoc "Remote port to send the UDP frames to";
};
cache-dir = mkOption {
type = types.str;
default = "/var/cache/mensa-tts";
description = mdDoc "Directory to store temporary data";
};
};
config = mkIf cfg.enable {
environment.systemPackages = with pkgs; [
cfg.package
];
users.users = mkIf (cfg.user == "mensa-tts") {
mensa-tts = {
group = cfg.group;
isNormalUser = true;
};
};
users.groups = mkIf (cfg.group == "mensa-tts") {
mensa-tts = { };
};
systemd.tmpfiles.rules = [
"d '${cfg.cache-dir}' 0750 ${cfg.user} ${cfg.group} - -"
];
systemd.services.mensa-tts = {
description = "mensa-tts service";
serviceConfig = {
Type = "oneshot";
User = cfg.user;
Group = cfg.group;
WorkingDirectory = cfg.cache-dir;
};
script = ''
${cfg.package}/bin/mena-tts
${cfg.package}/bin/fm_feed_wav --local-addr ${cfg.local-address} \
--local-port ${cfg.local-port} \
--local-addr ${cfg.local-address} \
--local-port ${cfg.local-port} \
--wav mensa.wav
'';
};
systemd.timers.mensa-tts = {
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = cfg.time;
Unit = "mensa-tts.service";
};
};
};
}