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

with lib;
let
  cfg = config.modules.services.hydra;
in
{
  options.modules.services.hydra = {
    enable = mkEnableOption "Whether to enable Hydra, a Nix-based continuous build system";
    baseURL = mkOption {
      type = types.str;
      example = "https://hydra.kusanari.network";
      description = "The base URL for the Hydra webserver instance";
    };
  };

  config = mkIf cfg.enable {
    services.hydra = {
      enable = true;

      package = hydra.packages.x86_64-linux.hydra;

      hydraURL = cfg.baseURL;
      dbi = "dbi:Pg:dbname=hydra;user=hydra;";
      useSubstitutes = true;
      notificationSender = "hydra@kusanari.network";

      listenHost = "localhost";
      port = 4004;
    };

    modules.persistence.directories = [
      "/var/lib/hydra"
    ];

    nix.settings.allowed-uris = [ "github:" "https://" "http://" "git+http://" "git+https://" ];
  };
}