# Overall configuration
# Copyright (C) 2022  Nguyễn Gia Phong
#
# This file is part of loang configuration.
#
# Loang configuration is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Loang configuration is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with loang configuration.  If not, see <https://www.gnu.org/licenses/>.

{ pkgs, ... }:
{
  environment = {
    enableAllTerminfo = true;
    systemPackages = with pkgs; [ git htop man-pages rsync vim ];
  };

  fileSystems."/mnt/nas" = {
    device = "172.16.129.228:/nas/4905";
    options = [ "nfsvers=3" ];
    fsType = "nfs";
  };

  imports = [
    ./automation.nix
    ./dbms.nix
    ./dns.nix
    ./irc.nix
    ./git.nix
    ./mail.nix
    ./matrix.nix
    ./music.nix
    ./push.nix
    ./static.nix
    ./status.nix
    ./vpsadminos.nix
  ];

  networking = {
    domain = "loang.net";
    hostName = "brno";

    nftables = {
      enable = true;
      ruleset = ''
        table inet filter {
          # https://openai.com/gptbot-ranges.txt
          set gptbot_ipv4 {
            type ipv4_addr
            flags interval
            elements = {
              20.15.240.64/28,
              20.15.240.80/28,
              20.15.240.96/28,
              20.15.240.176/28,
              20.15.241.0/28,
              20.15.242.128/28,
              20.15.242.144/28,
              20.15.242.192/28,
              40.83.2.64/28
            }
          }

          chain output {
            type filter hook output priority 0
            policy accept
            ip daddr @gptbot_ipv4 counter reject
          }

          chain input {
            type filter hook output priority 0
            policy accept
            ip saddr @gptbot_ipv4 counter reject
          }
        }
      '';
    };
  };

  security.sudo = {
    enable = true;
    wheelNeedsPassword = false;
  };

  services.openssh = {
    enable = true;
    openFirewall = true;
    settings.PasswordAuthentication = false;
    ports = [ 2211 ];
  };

  system.stateVersion = "22.05";

  systemd.extraConfig = ''
    DefaultTimeoutStartSec=900s
  '';

  time.timeZone = "UTC";

  users.users = {
    axl = {
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/axl.pub" ];
    };

    ckie = {
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/ckie.pub" ];
    };

    cnx = {
      extraGroups = [ "wheel" ];
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/cnx.pub" ];
      packages = with pkgs; [ stow ];
    };

    epoch = {
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/epoch.pub" ];
    };

    int2k = {
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/int2k.pub" ];
    };

    mingnho = {
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/mingnho.pub" ];
    };

    owocean = {
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/owocean.pub" ];
    };

    xarvos = {
      extraGroups = [ "wheel" ];
      isNormalUser = true;
      openssh.authorizedKeys.keyFiles = [ "/etc/ssh/xarvos.pub" ];
    };
  };
}