46 lines
1.5 KiB
Nix
46 lines
1.5 KiB
Nix
{ config, lib, pkgs, buildPythonPackage, ... }:
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with import <stockholm/lib>;
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let
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pkg = pkgs.ampel;
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home = "/var/lib/ampel";
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sec = "${toString <secrets>}/ampel/google-muell.json";
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ampelsec = "${home}/google-muell.json";
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cred = "${toString <secrets>}/ampel/google-muell-creds.json";
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# TODO: generate this credential file locally
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ampelcred = "${home}/google-muell-creds.json";
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sleepval = "1800";
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# default-color = "18,63,40";
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default-color = "255,127,0";
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config_json = toFile "config.json" (toJSON {
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mq_hostname = "localhost";
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mq_port = 1883;
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mq_username = "sensor";
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mq_topic = "/ham/flurlicht/cmnd/MEM1";
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mq_password = replaceChars ["\n"] [""] (readFile "${toString <secrets>}/mqtt/sensor");
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});
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in {
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users.users.ampel = {
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uid = genid "ampel";
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createHome = true;
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isSystemUser = true;
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inherit home;
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};
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systemd.services.google-muell-ampel = {
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description = "Send led change to rgb cubes";
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after = [ "network-online.target" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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User = "ampel";
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ExecStartPre = pkgs.writeDash "copy-ampel-secrets" ''
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install -m600 -o ampel ${sec} ${ampelsec}
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install -m600 -o ampel ${cred} ${ampelcred}
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'';
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ExecStart = "${pkg}/bin/google-muell --config ${config_json} --default-color=${default-color} --client-secrets=${ampelsec} --credential-path=${ampelcred} --sleepval=${sleepval}";
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PermissionsStartOnly = true;
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Restart = "always";
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RestartSec = 10;
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PrivateTmp = true;
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};
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};
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}
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