nixos/modules/snapclient.nix

{
  pkgs,
  lib,
  config,
  ...
}: let
  cfg = config.services.snapclient;
in {
  options.services.snapclient.enable = lib.mkEnableOption "a local snapclient service";
  options.services.snapclient.latency = lib.mkOption {
    type = lib.types.number;
    description = "latency of the PCM device";
    default = 0;
  };

  config.systemd.user.services.snapclient = lib.mkIf cfg.enable {
    wantedBy = lib.warnIfNot config.services.pipewire.enable "Pipewire is not running, snapclient won't work" [
      "pipewire.service"
      "default.target"
    ];
    after = [
      "pipewire.service"
    ];
    serviceConfig = {
      ExecStart = "${pkgs.snapcast}/bin/snapclient --host snapserver.lan --player pulse --latency ${builtins.toString cfg.latency}";
      Slice = "session.slice";
      Restart = "on-failure";
      RestartSec = 60;
    };
    unitConfig = {
      StartLimitIntervalSec = 0;
    };
  };
}