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

with lib;  # use the functions from lib, such as mkIf

let
  cfg = config.services.opengist;
  src = builtins.fetchTarball { 
    url = "https://github.com/thomiceli/opengist/releases/download/v1.9.1/opengist1.9.1-linux-amd64.tar.gz"; 
    sha256 = "sha256:0cayri7yz792964mq3h52dryjs7rjn3xhw5papi589c8d9a0afw4";
  };  
in {
  options = {
    services.opengist = { 
      enable = mkOption {
        type = types.bool;
        default = false;
        description = ''
          Whether to enable OpenGist.
        '';
      };

      config = mkOption {
        type = types.path;
        description = ''
          The config path to use.
        '';
      };
    };
  };

  config = mkIf cfg.enable {
    systemd.services.opengist = {
      path = [
        pkgs.git
        pkgs.openssh
      ];
      name = "opengist.service";
      enable = true;
      script = "${src}/opengist --config ${cfg.config}";
      description = "OpenGist";
    };
  };
}