{
  pkgs,
  lib,
  config,
  ...
}: {
  options = {
    services.syncthing-config = {
      domain = lib.mkOption {
        type = lib.types.str;
        example = "example.com";
        description = lib.mdDoc "Top-level domain to configure";
      };
      subdomain = lib.mkOption {
        type = lib.types.str;
        example = "syncthing";
        description = lib.mdDoc "Subdomain in which to put Syncthing";
      };
      port = lib.mkOption {
        type = lib.types.port;
        description = lib.mdDoc "Syncthing localhost port";
        default = 8384;
      };
    };
  };
  config = let
    filesystem_folder = "/preserve/syncthing/";
  in {
    services.syncthing = {
      enable = true;
      user = "syncthing";
      dataDir = "${filesystem_folder}/data"; # Default folder for new synced folders
      configDir = "${filesystem_folder}/config"; # Folder for Syncthing's settings and keys
      openDefaultPorts = true;
    };

    systemd.services.syncthing.serviceConfig.ReadWritePaths = [filesystem_folder];

    systemd.tmpfiles.rules = ["d ${filesystem_folder} 0750 syncthing syncthing -"];
  };
}