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

{
  imports = [
    ../common/base.nix
    ../common/xeon/console.nix
    ../module/emulation.nix
  ];

  # Select the this using the ID to avoid mismatches
  boot.loader.grub.device = "/dev/disk/by-id/wwn-0x500a07514b0c1103";

  # No swap, there is plenty of RAM
  swapDevices = lib.mkForce [];

  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
  boot.kernelModules = [ "kvm-amd" ];

  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
  hardware.cpu.intel.updateMicrocode = lib.mkForce false;

  networking = {
    defaultGateway = "147.83.30.130";
    nameservers = [ "8.8.8.8" ];
    timeServers = [ "ntp1.upc.edu" "ntp2.upc.edu" ];
    hostName = "fox";
    interfaces.enp1s0f0np0.ipv4.addresses = [
      {
        # UPC network
        # Public IP configuration:
        # - Hostname: fox.ac.upc.edu
        # - IP: 147.83.30.141
        # - Gateway: 147.83.30.130
        # - NetMask: 255.255.255.192
        # Private IP configuration for BMC:
        # - Hostname: fox-ipmi.ac.upc.edu
        # - IP: 147.83.35.27
        # - Gateway: 147.83.35.2
        # - NetMask: 255.255.255.0
        address = "147.83.30.141";
        prefixLength = 26; # 255.255.255.192
      }
    ];
    extraHosts = ''
      147.83.30.141   fox.ac.upc.edu
      147.83.35.27    fox-ipmi.ac.upc.edu
    '';
  };

  # Configure Nvidia driver to use with CUDA
  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.production;
  hardware.graphics.enable = true;
  nixpkgs.config.allowUnfree = true;
  nixpkgs.config.nvidia.acceptLicense = true;
  services.xserver.videoDrivers = [ "nvidia" ];

  # Mount NVME disks
  fileSystems."/nvme0" = { device = "/dev/disk/by-label/nvme0"; fsType = "ext4"; };
  fileSystems."/nvme1" = { device = "/dev/disk/by-label/nvme1"; fsType = "ext4"; };

  # Make a /nvme{0,1}/$USER directory for each user.
  systemd.services.create-nvme-dirs = let
    # Take only normal users in fox
    users = lib.filterAttrs (_: v: v.isNormalUser) config.users.users;
    commands = lib.concatLists (lib.mapAttrsToList
      (_: user: [
        "install -d -o ${user.name} -g ${user.group} -m 0755 /nvme{0,1}/${user.name}"
      ]) users);
    script = pkgs.writeShellScript "create-nvme-dirs.sh" (lib.concatLines commands);
  in {
    enable = true;
    wants = [ "local-fs.target" ];
    after = [ "local-fs.target" ];
    wantedBy = [ "multi-user.target" ];
    serviceConfig.ExecStart = script;
  };
}