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

let
  nixpkgs-unstable = import <nixpkgs_unstable> {};
in
{
  imports = [
    ../config/gaming.nix
    ../config/ap.nix
    ../config/common.nix
    ../config/desktop.nix
    ../config/yubikey.nix
  ];

  programs.bcc.enable = true;

  systemd.extraConfig = "DefaultLimitNOFILE=1048576";
  
  security.pam.loginLimits = [{
      domain = "*";
      type = "hard";
      item = "nofile";
      value = "1048576";
  }];

  virtualisation.libvirtd.enable = true;

  # Streaming test
  # services.nginx.enable = true;
  # services.nginx.appendConfig = ''
  #   rtmp {
  #     server {
  #       listen 1935;
  #       chunk_size 4096;
  #       application live {
  #         live on;
  #         record off;
  #       }
  #     }
  #   }
  # '';

  systemd.services.duckdns = {
    description = "Update orbekk.duckdns.org";
    path = [ pkgs.curl ];
    after = [ "network.target" ];
    script = let token = (import ../duckdns-token.nix).token; in ''
      curl "https://www.duckdns.org/update?domains=orbekk&token=${token}&ip="
    '';
  };
  systemd.timers.duckdns = {
    wantedBy = [ "timers.target" ];
    timerConfig = {
      OnBootSec = "1m";
      OnUnitInactiveSec = "10m";
    };
  };

  services.blueman.enable = true;

  hardware.steam-hardware.enable = true;
  services.xserver.videoDrivers = [ "amdgpu" ];
  services.xserver.resolutions = [{x=2560; y=1440;}];

  hardware.cpu.amd.updateMicrocode = true;
  hardware.enableAllFirmware = true;
  hardware.enableRedistributableFirmware = true;

  console.font = "ter-i32b";
  console.packages = [ pkgs.terminus_font ];
  console.earlySetup = true;

  boot.loader.grub.enable = true;
  boot.loader.grub.version = 2;
  boot.loader.grub.device = "nodev";
  boot.loader.grub.efiSupport = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.kernelPackages = pkgs.linuxPackages_latest;
  boot.kernelModules = [ "kvm-amd" "i2c-dev" ];
  # boot.kernelPackages = nixpkgs-unstable.linuxPackages_latest;

  systemd.services.monitor-switch-to-me = {
    description = "Switch monitor to this computer";
    path = [ pkgs.ddcutil ];
    script = let target = "0x0f"; in ''
      # Would like to avoid switching if possible; sadly this doesn't reliably
      # report other input sources.
      # ddcutil --mfg HPN getvcp 60 | grep sl=${target} || \
      ddcutil --mfg HPN setvcp 60 ${target} --sleep-multiplier 4
      # Prevent from getting executed multiple times in succession.
      sleep 15
    '';
  };

  services.udev.extraRules = ''
    ACTION!="add", GOTO="display_switch_end"

    # Trigger on Planck keyboard.
    ATTRS{idVendor}=="feed",\
      ATTRS{idProduct}=="6060",\
      RUN+="${pkgs.systemd}/bin/systemctl start --no-block monitor-switch-to-me.service"

    LABEL="display_switch_end"
  '';

  # boot.kernelPackages = let
  #   linux_pkg = { fetchgit, buildLinux, ... } @ args:
  #     buildLinux (args // rec {
  #       version = "5.6";
  #       modDirVersion = "5.6.0";
  #       src = pkgs.fetchgit {
  #         url = "https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git";
  #         rev = "v5.6";
  #         sha256 = "06xddhg04gv9azqikvv98xcv8x6h0x3xy2zc6r7m7jjd28a5bh6j";
  #       };
  #       kernelPatches = [];
  #     } // (args.argsOverride or {}));
  #   linux = pkgs.callPackage linux_pkg {};
  # in pkgs.recurseIntoAttrs (pkgs.linuxPackagesFor linux);

  boot.kernelParams = ["amdgpu.dc=1"];

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

  # networking.interfaces.enp37s0.useDHCP = true;
  # networking.interfaces.enp37s0.macAddress = "3c:97:0e:19:7e:5c";

  system.stateVersion = lib.mkForce "20.03";

  # SSD configuration
  fileSystems."/" =
    { device = "/dev/mapper/cryptsystem";
      fsType = "ext4";
      options = ["noatime" "discard"];
    };

  boot.initrd.luks.devices."cryptsystem".device = "/dev/disk/by-uuid/8acc11c2-e540-4561-8c88-34176fca1a72";
  boot.initrd.luks.devices."cryptsystem".allowDiscards = true;

  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/C636-D264";
      fsType = "vfat";
    };

  programs.ssh.askPassword = "${pkgs.x11_ssh_askpass}/libexec/x11-ssh-askpass";
  services.xserver.desktopManager.plasma5.enable = true;

  # 60 fps
  services.xserver.xrandrHeads =
    let monitor  = name: {
      output = name;
      monitorConfig = ''
        ModeLine "3840x2160" 594.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync
        Option "PreferredMode" "3840x2160_60"
      '';

    }; in
    [
      (monitor "HDMI-A-0")
      (monitor "HDMI-A-1")
    ];
}