with builtins;
with import <cascade/functions>;

{pkgs, lib, config, hostName, ...}:
with lib;

let cfg = config.services.guzzlords; in

let
    islandToExportList = guzzlordName: island: conf: if (island == config.networking.hostName) then
      [''
        ${conf.path} ${guzzlordName}(rw,nohide,insecure,no_subtree_check)
      ''] else [];
    guzzlordToIslandConfigs = (guzzlordName: conf:
      (attrValues (mapAttrs (islandToExportList guzzlordName) conf.islands)));
in
{
  config = let exports = join-string "\n" (flatten (attrValues (mapAttrs guzzlordToIslandConfigs cfg))); in
  mkIf (exports != "") {
    services.nfs.server = {
        inherit exports;
        enable = true;
        statdPort = 4000;
        lockdPort = 4001;
        mountdPort = 4002;
      };
    networking.firewall = {
      allowedTCPPorts = [111 2049 4000 4001 4002 20048];
      allowedUDPPorts = [111 2049 4000 4001 4002 20048];
    };
  };
}