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path: root/nixos/modules/services/networking/quassel.nix
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{ config, lib, pkgs, ... }:

with lib;

let
  cfg = config.services.quassel;
  quassel = cfg.package;
  user = if cfg.user != null then cfg.user else "quassel";
in

{

  ###### interface

  options = {

    services.quassel = {

      enable = mkEnableOption "the Quassel IRC client daemon";

      certificateFile = mkOption {
        type = types.nullOr types.str;
        default = null;
        description = ''
          Path to the certificate used for SSL connections with clients.
        '';
      };

      requireSSL = mkOption {
        type = types.bool;
        default = false;
        description = ''
          Require SSL for connections from clients.
        '';
      };

      package = mkOption {
        type = types.package;
        default = pkgs.quasselDaemon;
        defaultText = "pkgs.quasselDaemon";
        description = ''
          The package of the quassel daemon.
        '';
        example = literalExample "pkgs.quasselDaemon";
      };

      interfaces = mkOption {
        default = [ "127.0.0.1" ];
        description = ''
          The interfaces the Quassel daemon will be listening to.  If `[ 127.0.0.1 ]',
          only clients on the local host can connect to it; if `[ 0.0.0.0 ]', clients
          can access it from any network interface.
        '';
      };

      portNumber = mkOption {
        default = 4242;
        description = ''
          The port number the Quassel daemon will be listening to.
        '';
      };

      dataDir = mkOption {
        default = ''/home/${user}/.config/quassel-irc.org'';
        description = ''
          The directory holding configuration files, the SQlite database and the SSL Cert.
        '';
      };

      user = mkOption {
        default = null;
        description = ''
          The existing user the Quassel daemon should run as. If left empty, a default "quassel" user will be created.
        '';
      };

    };

  };


  ###### implementation

  config = mkIf cfg.enable {
    assertions = [
      { assertion = cfg.requireSSL -> cfg.certificateFile != null;
        message = "Quassel needs a certificate file in order to require SSL";
      }];

    users.users = optionalAttrs (cfg.user == null) {
      quassel = {
        name = "quassel";
        description = "Quassel IRC client daemon";
        group = "quassel";
        uid = config.ids.uids.quassel;
      };
    };

    users.groups = optionalAttrs (cfg.user == null) {
      quassel = {
        name = "quassel";
        gid = config.ids.gids.quassel;
      };
    };

    systemd.tmpfiles.rules = [
      "d '${cfg.dataDir}' - ${user} - - -"
    ];

    systemd.services.quassel =
      { description = "Quassel IRC client daemon";

        wantedBy = [ "multi-user.target" ];
        after = [ "network.target" ] ++ optional config.services.postgresql.enable "postgresql.service"
                                     ++ optional config.services.mysql.enable "mysql.service";

        serviceConfig =
        {
          ExecStart = concatStringsSep " " ([
            "${quassel}/bin/quasselcore"
            "--listen=${concatStringsSep "," cfg.interfaces}"
            "--port=${toString cfg.portNumber}"
            "--configdir=${cfg.dataDir}"
          ] ++ optional cfg.requireSSL "--require-ssl"
            ++ optional (cfg.certificateFile != null) "--ssl-cert=${cfg.certificateFile}");
          User = user;
        };
      };

  };

}