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

with lib;
let
  hostname = "legatus";
  host-ipv4 = "190.2.136.47";
  domain-name = config.fudo.hosts.${hostname}.domain;
  domain = config.fudo.domains.${domain-name};
  site-name = config.fudo.hosts.${hostname}.site;
  site = config.fudo.sites.${site-name};

  local-packages = with pkgs; [ ldns.examples ];

  host-secrets = config.fudo.secrets.host-secrets.${hostname};

in {
  networking = {
    enableIPv6 = true;

    nameservers = [ "1.1.1.1" ];
    defaultGateway = {
      address = site.gateway-v4;
      interface = "extif0";
    };

    interfaces.extif0.ipv4.addresses = [{
      address = host-ipv4;
      prefixLength = 24;
    }];
  };

  # Getting errors due to running VMs
  boot.kernel.sysctl."fs.inotify.max_user_instances" = 512;

  security.acme.defaults.email = "admin@legatus.fudo.org";

  systemd.tmpfiles.rules = [
    "L /etc/adjtime                   - - - - /state/etc/adjtime"
    "d /state/services/podman/volumes 0700 root root - -"
    "d /state/services/acme           0755 acme acme - -"
  ];

  fileSystems = {
    "/var/lib/acme" = {
      device = "/state/services/acme";
      options = [ "bind" ];
    };
  };

  environment.systemPackages = local-packages;

  # informis.cl-gemini = {
  #   enable = true;

  #   hostname = "gemini.fudo.org";
  #   server-ip = host-ipv4;
  #   document-root = "/state/gemini/root";
  #   # textfiles-archive = "${pkgs.textfiles}";
  #   slynk-port = 4005;
  # };

  services = {
    mastodonContainer.state-directory = "/state/services/mastodon";
    authentikContainer.state-directory = "/state/services/authentik";
    nextcloudContainer.state-directory = "/state/services/nextcloud";
  };

  virtualisation = {
    arion.backend = "podman-socket";
    podman = {
      enable = true;
      dockerSocket.enable = true;
      autoPrune.enable = true;
      defaultNetwork.settings.dns_enabled = true;
    };
  };

  fudo = {
    hosts.legatus.external-interfaces = [ "extif0" ];

    services = {
      auth = {
        ldap.state-directory = "/state/services/ldap";
        kerberos.state-directory = "/state/services/heimdal-kdc";
      };

      chat = {
        state-directory = "/state/services/chat";
        external-interface = "extif0";
      };

      nexus.dns-server.listen-addresses = [ host-ipv4 ];
    };

    client.dns = {
      ipv4 = true;
      ipv6 = true;
      user = "fudo-client";
      external-interface = "extif0";
    };

    secure-dns-proxy = {
      enable = true;
      upstream-dns =
        [ "https://1.1.1.1/dns-query" "https://1.0.0.1/dns-query" ];
      bootstrap-dns = "1.1.1.1";
      listen-ips = [ "127.0.0.1" ];
      listen-port = 53;
      allowed-networks = [ "1.1.1.1/32" "1.0.0.1/32" "localhost" "link-local" ];
    };

    dns.state-directory = "/state/nsd";
  };
}