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

let
  cfg = config.services.gmnisrv;
in {
  meta.maintainers = [ lib.maintainers.bsima ];
  options.services.gmnisrv = {
    enable = lib.mkEnableOption "Enable the gmnisrv service";
    listen = lib.mkOption {
      description = "Addresses and ports on which to listen.";
      default = lib.mkDefault "0.0.0.0:1965 [::]:1965";
    };
    settings = lib.mkOption {
      # type = cfgFormat.type;
      description = ''
        Configuration for gmnisrv. See gmnisrv.ini(5) for supported settings.
      '';
      default = {
        ":tls" = {
          "store" = lib.mkDefault "${cfg.dataDir}/certs";
        };
      };
    };
    dataDir = lib.mkOption {
      type = lib.types.str;
      default = "/var/lib/gemini";
      description = "Where gmnisrv should store certs and other data.";
    };
  };
  config = lib.mkIf cfg.enable {
    systemd.services.gmnisrv = {
      description = "gmnisrv service";
      wantedBy = [ "multi-user.target" ];
      after = [ "network-online.target" ];
      script = let ini = lib.generators.toINIWithGlobalSection {} {
        globalSection = {"listen" = cfg.listen;};
        sections = cfg.settings;
      }; in "${pkgs.gmnisrv}/bin/gmnisrv -C ${ini}";
    };
  };
}