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

let
  cfg = config.services.federated-forge-discovery.indexer;
  configFile = pkgs.writeText "config.ini" (pkgs.lib.generators.toINI { } cfg);
  execCommand = "${cfg.package}/bin/ffd-indexer -c '${configFile}'";
in
{
  options.services.federated-forge-discovery.indexer = {
    enable = lib.mkEnableOption "Enables the Federated Forge Discovery Indexer systemd service.";
    openFirewall = lib.mkOption {

    };
    package = lib.mkOption {
      description = "Package to use.";
      type = lib.types.package;
      default = lib.literalExpression ''
        pkgs.ffd-indexer
      '';
    };
    port = lib.mkOption {
      description = "Port to listen for search engines";
      type = lib.types.port;
      default = 47810;
    };
  };

  config = lib.mkIf cfg.enable {
    systemd.services."ffd-indexer" = {
      description = "Federated Forge Discovery Indexer";
      wants = [ "network-online.target" ];
      after = [ "network-online.target" ];
      serviceConfig = {
        Restart = "always";
        RestartSec = 30;
        ExecStart = execCommand;
        User = "ffd-indexer";
        Group = "ffd-indexer";
        AmbientCapabilities = lib.mkIf (cfg.port < 1000) [ "CAP_NET_BIND_SERVICE" ];
        CapabilityBoundingSet = lib.mkIf (cfg.port < 1000) [ "CAP_NET_BIND_SERVICE" ];
        NoNewPrivileges = true;
      };
      wantedBy = [ "multi-user.target" ];
    };
  };

  #meta = {
  #  maintainers = with lib.maintainers; [ xengi ];
  #  doc = ./default.xml;
  #};
}