{ config, lib, pkgs, ... }:

with lib;

{
  users.users.data-em = {
    group = "data-em";
    home = "/data/em";
    useDefaultShell = true;
    isSystemUser = true;
  };
  users.groups.data-em = {};

  users.users.data-em-mp3 = {
    group = "data-em-mp3";
    home = "/data/em-mp3";
    useDefaultShell = true;
    isSystemUser = true;
  };
  users.groups.data-em-mp3 = {};

  systemd.tmpfiles.rules = [
    "d /data/em - data-em data-em - -"
    "d /data/em-mp3 - data-em-mp3 data-em-mp3 - -"
  ];

  systemd.services.convert-flac-dir-to-mp3 = {
    serviceConfig = {
      Type = "oneshot";
      ExecStart = "${lib.getExe pkgs.convert-flac-dir-to-mp3} /data/em /data/em-mp3";
      StateDirectory = "convert-flac-dir-to-mp3";
      WorkingDirectory = "/var/lib/convert-flac-dir-to-mp3";
      User = "data-em-mp3";
      Group = "data-em-mp3";
    };
    startAt = "*-*-* 03:47:00";
  };
}