{ lib, pkgs, secret, ... }:
let
  inherit (lib)
    concatMapStringsSep;

  loggingConfig = ''
    logging {
      ${concatMapStringsSep "\n" (x:
        ''
          channel ${x}_file {
            file "/var/log/named/${x}.log" versions 3 size 5m;
            severity dynamic;
            print-time yes;
          };
          category ${x} { ${x}_file; };
        '') [
          "default"
          "database"
          "security"
          "config"
          "resolver"
          "xfer-in"
          "xfer-out"
          "notify"
          "client"
          "unmatched"
          "queries"
          "network"
          "update"
          "network"
          "dispatch"
          "dnssec"
          "lame-servers"
        ]}
    };
  '';
in
{
  systemd.tmpfiles.rules = [
    "d     /var/log/named   0750 named named  - -"
  ];

  services.bind = {
    enable = true;
    forward = "only";
    forwarders = [
      "127.0.0.1 port 5353"
    ];

    directory = "/var/lib/bind";
    zones = {
      "in.redalder.org" = {
        file = ./zones/in.redalder.org.zone;
        master = true;
      };
      "hosts.in.redalder.org" = {
        file = ./zones/hosts.in.redalder.org.zone;
        master = true;
      };
    };

    cacheNetworks = [
      "127.0.0.0/8"
      (secret.network.networks.home.wireless or "")
      (secret.network.networks.home.mine or "")
      "10.64.99.0/24"
      (secret.network.networks.home.amsterdam or "")
      (secret.network.networks.vpn or "")
      "172.26.64.0/20"
    ];
    extraConfig = loggingConfig;
    extraOptions = ''
      # recursion yes;
      dnssec-validation auto;
    '';
  };

  systemd.services.bind = {
    before = [ "network-online.target" ];
  };
}