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

let
  my-overlay = self: super: {
    xow = super.xow.overrideAttrs (o: rec {
      # src = ../xow-src/.;
      patches = [../patches/xow/0001-Single-controller-patch.patch];
    });
    my-linuxPackages =
      let linuxPkgs = super.unstable.linuxPackages_latest;
      in linuxPkgs.extend (self: super: {
        # xpadneo = super.xpadneo.overrideAttrs (o: rec {
        #   version = "master";
        #   src = pkgs.fetchFromGitHub {
        #     owner = "atar-axis";
        #     repo = "xpadneo";
        #     rev = "bf8a3c3d7e28162d074744539d0b228566cb0e32";
        #     sha256 = "0hspmvghr3qi1wf17xwfhd5wy7z1rdzh6qhwlhwgfv21f02n2xs9";
        #   };
        # });
      });
    };
in
{
  orbekk.gaming.enable = true;
  orbekk.desktop.enable = true;

  orbekk.simple-firewall.allowedTCPPorts =
    [
      # pulseaudio
      4713
    ];
  orbekk.simple-firewall.allowedUDPPorts =
    [
      # avahi
      5353
    ];

  environment.systemPackages = with pkgs; [
    openmw
    kodi
    retroarch
    wmctrl  # for steam launcher
    openmw
  ];
  nixpkgs.config.kodi = {
    enableAdvancedLauncher = true;
    enableAdvancedEmulatorLauncher = true;
    enableJoystick = true;
    enableSteamLauncher = true;
    enableInputStreamAdaptive = true;
  };
  nixpkgs.config.retroarch = {
    enableCitra = true;
    enableDolphin = true;
  };

  nixpkgs.overlays = [ my-overlay ];
  # hardware.xpadneo.enable = true;
  systemd.services.xow.wantedBy = ["multi-user.target"];
  systemd.services.xow.serviceConfig.Group = "input";
  hardware.uinput.enable = true;
  systemd.packages = [ pkgs.xow ];
  services.hardware.xow.enable = true;
  boot.blacklistedKernelModules = ["mt76x2u"];  # Interferes with xow

  hardware.pulseaudio = {
    enable = true;
    extraModules = [ pkgs.pulseaudio-modules-bt ];
    package = lib.mkForce pkgs.pulseaudioFull;
    # extraConfig = ''
    #   load-module module-dbus-protocol
    #   load-module module-jack-sink channels=2
    #   load-module module-jack-source channels=1
    # '';
    systemWide = true;
    # configFile = pkgs.writeText "default.pa" ''
    #   load-module module-bluetooth-policy
    #   load-module module-bluetooth-discover
    #   ## module fails to load with 
    #   ##   module-bluez5-device.c: Failed to get device path from module arguments
    #   ##   module.c: Failed to load module "module-bluez5-device" (argument: ""): initialization failed.
    #   # load-module module-bluez5-device
    #   # load-module module-bluez5-discover
    # '';
  };
  systemd.services.pulseaudio = {
    # environment."JACK_PROMISCUOUS_SERVER" = "jackaudio";
    serviceConfig = {
      LimitMEMLOCK = "infinity";
    };
  };
  # users.extraUsers.pulse.extraGroups = [ "jackaudio" ];

  networking.firewall.allowedTCPPorts = [ 22 4713 ];
  networking.networkmanager.enable = true;
  networking.networkmanager.wifi.powersave = false;
  networking.vlans = {
    "enp37s0.admin" = {
      id = 255;
      interface = "enp37s0";
    };
  };
  networking.interfaces."enp37s0.admin".useDHCP = true;

  programs.bcc.enable = true;

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

  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.my-linuxPackages;
  boot.kernelModules = [ "kvm-amd" "i2c-dev" ];

  # https://bugzilla.kernel.org/show_bug.cgi?id=203709
  boot.extraModprobeConfig = ''
    options iwlwifi power_save=0
    options iwlwifi swcrypto=1
    options iwlwifi disable_11ax=1
    options iwlwifi bt_coex_active=0
    options iwlmvm power_scheme=1
    # options bluetooth disable_ertm=1

    # For xpadneo
    alias hid:b0005g*v0000045Ep000002E0 hid_xpadneo
    alias hid:b0005g*v0000045Ep000002FD hid_xpadneo
    alias hid:b0005g*v0000045Ep00000B05 hid_xpadneo
    alias hid:b0005g*v0000045Ep00000B13 hid_xpadneo
  '';

  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"

    # For xpadneo
    ACTION=="add", KERNEL=="0005:045E:02FD.*|0005:045E:02E0.*|0005:045E:0B05.*|0005:045E:0B13.*", SUBSYSTEM=="hid", DRIVER!="xpadneo", ATTR{driver/unbind}="%k", ATTR{[drivers/hid:xpadneo]bind}="%k"
    ACTION=="add", DRIVERS=="xpadneo", SUBSYSTEM=="input", ENV{ID_INPUT_JOYSTICK}=="1", TAG+="uaccess", MODE="0664", ENV{LIBINPUT_IGNORE_DEVICE}="1"
  '';

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

  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";

  # 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")
    ];
}