# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{ config, pkgs, mms, ... }:
{
  imports = [
    ./hardware-configuration-void.nix
    ./common.nix
    mms.module
  ];

  networking.hostName = "void"; # Define your hostname.

  services.samba = {
    enable = true;
    openFirewall = true;
    securityType = "user";
    settings.global = {
      workgroup = "WORKGROUP";
      "server string" = "void";
      "netbios name" = "void";
      security = "user";
      "hosts allow" = "0.0.0.0/0";
      "guest account" = "nobody";
      "map to guest" = "bad user";
      "log level" = 4;
      #"smb encrypt" = "mandatory";
    };
    shares."Music" = {
      path = "/pile/Music";
      browsable = "yes";
      "read only" = "yes";
      "guest ok" = "no";
      "read list" = "@music";
    };
  };

  users.users.music = {
    group = "music";
    isNormalUser = true;
  };

  # enqble i2c-dev kernel module for control of backlight in external monitor
  # https://discourse.nixos.org/t/how-to-enable-ddc-brightness-control-i2c-permissions/20800/3
  boot.extraModulePackages = [
    config.boot.kernelPackages.ddcci-driver
  ];
  boot.kernelModules = ["i2c-dev" "ddcci_backlight"];
  hardware.i2c.enable = true;

  # package for controlling brightness on external monitor
  environment.systemPackages = [
    pkgs.ddcutil
  ];

  # mount external drive
  fileSystems."/external".label = "external";

  # backup
  services.borgbackup.jobs."external" = {
    paths = [
      "/home"
      "/var"
      "/pile"
    ];
    exclude = [
      "/home/*/.local/share/Steam"
      "**/*cache"
      "**/*Cache"
      "**/*trash"
      "**/*Trash"
      "/home/*/.mozilla/firefox"
      "/home/*/GOG Games"
      "**/target"
      "**/result"
    ];
    repo = "/external/voidbackup";
    encryption = {
      mode = "repokey-blake2";
      passCommand = "cat /root/borgbackup/passphrase";
    };
    compression = "auto,lzma";
    startAt = "daily";
    persistentTimer = true;
  };
  systemd.services."borgbackup-job-external" = {
    unitConfig = {
      RequiresMountsFor = "/external";
      Requires = "external.mount";
    };
  };

  # minecraft TerraFirmaGreg server
  services.modded-minecraft-servers = {
    eula = true;
    instances.terrafirmagreg = {
      enable = true;
      rsyncSSHKeys = [""];
      serverConfig = {
        server-port = 25565;
        motd = "Welcome to logistic-bot's TerraFirmaGreg server";
        allow-flight = true;
        allow-nether = false;
        difficulty = 0;
        enable-rcon = false;
        level-type = "tfc\:overworld";
        view-distance = 24;
      };

      jvmPackage = pkgs.jdk17;
      jvmMaxAllocation = "8196M";
      jvmInitialAllocation = "2048M";

      # "Borrowed" from AllTheMods Discord
      jvmOpts = builtins.concatStringsSep " " [
        "-XX:+UseG1GC"
        "-XX:+ParallelRefProcEnabled"
        "-XX:MaxGCPauseMillis=200"
        "-XX:+UnlockExperimentalVMOptions"
        "-XX:+DisableExplicitGC"
        "-XX:+AlwaysPreTouch"
        "-XX:G1NewSizePercent=40"
        "-XX:G1MaxNewSizePercent=50"
        "-XX:G1HeapRegionSize=16M"
        "-XX:G1ReservePercent=15"
        "-XX:G1HeapWastePercent=5"
        "-XX:G1MixedGCCountTarget=4"
        "-XX:InitiatingHeapOccupancyPercent=20"
        "-XX:G1MixedGCLiveThresholdPercent=90"
        "-XX:G1RSetUpdatingPauseTimePercent=5"
        "-XX:SurvivorRatio=32"
        "-XX:+PerfDisableSharedMem"
        "-XX:MaxTenuringThreshold=1"
      ];
    };
  };
}