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

let
  release = "nixos-23.05";
in {
  imports =
    [
      ./hardware-configuration.nix
      (builtins.fetchTarball {
         url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/${release}/nixos-mailserver-${release}.tar.gz";
         # This hash needs to be updated
         sha256 = "1i56llz037x416bw698v8j6arvv622qc0vsycd20lx3yx8n77n44";
       })
    ];

  ## grub
  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;
  boot.loader.grub.device = "/dev/vda";

  ## networking
  systemd.network.enable = true;
  networking.hostName = "hua";

  networking.interfaces.ens3.ipv4.addresses = [ {
    address = "89.147.110.32";
    prefixLength = 24;
  } ];

  networking.defaultGateway = "89.147.110.1";
  # networking.nameservers = [ "9.9.9.9" "149.112.112.112" ];
  networking.nameservers = [ "93.95.224.28" "93.95.224.29" ];

  ## time
  time.timeZone = "Europe/London";

  ## users
  users.users.emilis = {
    isNormalUser = true;
    home = "/home/emilis";
    extraGroups = [ "wheel" ];
    # packages = with pkgs; [
    #   firefox
    #   thunderbird
    # ];
    openssh.authorizedKeys.keys = [
      "public-key-here"
    ];
  };
  users.users.cel = {
    isNormalUser = true;
    home = "/home/cel";
    extraGroups = [ "wheel" ];
    # packages = with pkgs; [
    #   firefox
    #   thunderbird
    # ];
    openssh.authorizedKeys.keys = [
      "ssh-rsa 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 openpgp:0xDDB3D176"
    ];
  };

  security.sudo.wheelNeedsPassword = false;

  ## autoupgrade
  system.autoUpgrade.enable = true;
  system.autoUpgrade.allowReboot = true;

  ## packages
  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = [
    pkgs.helix
    pkgs.wget
    pkgs.git
  ];

  # ssh
  services.openssh.enable = true;
  services.openssh.permitRootLogin = "no";
  services.openssh.passwordAuthentication = false;

  # mail
  mailserver = {
    enable = true;
    fqdn = "mail.jigglypuff.club";
    domains = [ "puff.place" "cum.skin" ];

    # A list of all login accounts. To create the password hashes, use
    # nix-shell -p mkpasswd --run 'mkpasswd -sm bcrypt'
    loginAccounts = {
      "emilis@puff.place" = {
        hashedPasswordFile = "/etc/nixos/mailserver/emilis@puff.place";
        aliases = ["postmaster@puff.place" "postmaster@cum.skin"];
      };
      "touch@cum.skin" = {
        hashedPasswordFile = "/etc/nixos/mailserver/touch@cum.skin";
      };
    };

    # Use Let's Encrypt certificates. Note that this needs to set up a stripped
    # down nginx and opens port 80.
    certificateScheme = "acme-nginx";
  };
}