#
# Hardware settings for Teclast F5 10" Laptop
# NixOS @ sda2
#
# flake.nix
#  └─ ./hosts
#      └─ ./laptop
#          └─ hardware-configuration.nix *
#
# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{ config, lib, pkgs, modulesPath, ... }:

{
  imports =
    [ (modulesPath + "/profiles/qemu-guest.nix")
    ];

  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod" ];
  boot.initrd.kernelModules = [ "vfio_pci" "vfio" "vfio_iommu_type1" "vfio_virqfd" ];
  boot.initrd.secrets = {
    "/root/NASKeyfile" =
        /root/NASKeyfile;
  };
  boot.initrd.luks.devices = {
    NAS-RAID1 = {
      device = "/dev/disk/by-uuid/57e6446d-faca-4b67-9063-e8d9afb80088";
      keyFile = "/root/NASKeyfile";
    };
    NAS-RAID2 = {
      device = "/dev/disk/by-uuid/b9edc489-ac37-4b28-981d-442722df7ae2";
      keyFile = "/root/NASKeyfile";
    };
  };
  boot.kernelModules = [ "kvm-intel" ];
  boot.extraModulePackages = [ ];
  boot.tmpOnTmpfs = true;
  zramSwap.enable = true;

  services.btrfs.autoScrub = {
    enable = true;
    interval = "monthly";
    fileSystems = [
      "/"
      "/mnt/Pluto"
#      "/mnt/Mars"
    ];
  };

  services.btrbk = {
      instances = {
          hf = {
              settings = {
                  incremental = yes;
                  snapshot_create = "ondemand";
                  snapshot_dir = "/mnt/snapshots";

                  snapshot_preserve = "2m 2w 5d 5h";
                  snapshot_preserve_min = "latest";
                
                  onCalender = "hourly";
                  volume =  {
                      "/" = {
                          snapshot_dir = /mnt/snapshots/root;
                          snapshot_create = "always";
                          subvolume = "@home";
                      };
                  };
              };
          };
      };
  };


  fileSystems."/" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@,discard=async" ];
    };

  fileSystems."/home" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@home,discard=async" ];
    };

  fileSystems."/srv" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@srv,discard=async" ];
    };

  fileSystems."/nix" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@nix,discard=async" ];
    };

    fileSystems."/mnt/snapshots/root" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@snapshots,discard=async" ];
    };

    fileSystems."/mnt/snapshots/Mars" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@snapshots/mars/home,discard=async" ];
    };

  fileSystems."/mnt/snapshots/Pluto" =
    { device = "/dev/disk/by-label/NAS-RAID";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,noatime,subvol=@snapshots" ];
    };

  fileSystems."/mnt/Pluto" =
    { device = "/dev/disk/by-label/NAS-RAID";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,noatime,subvol=@" ];
    };

  fileSystems."/mnt/Mars" =
    { device = "/dev/disk/by-label/NIXROOT";
      fsType = "btrfs";
      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@nas,discard=async" ];
    };

  fileSystems."/boot" =
    { device = "/dev/disk/by-label/NIXBOOT";
      fsType = "vfat";
    };

  fileSystems."/export/Pluto" =
    { device = "/mnt/Pluto";
      options = [ "bind" ];
    };
 
  fileSystems."/export/Mars" =
    { device = "/mnt/Mars";
      options = [ "bind" ];
    };
 
  swapDevices = [ ];
  
  networking = {
    useDHCP = false;                        # Deprecated
    hostName = "nas";
    domain = "home.opel-online.de";
    networkmanager = {
      enable = false;
    };
    interfaces = {
      enp0s31f6 = {
        useDHCP = true;                     # For versatility sake, manually edit IP on nm-applet.
#        ipv4.addresses = [ {
#            address = "45.142.114.153";
#            prefixLength = 24;
#        } ];
#        ipv6.addresses = [ {
#            address = "2a00:ccc1:101:19D::2";
#            prefixLength = 64;
#        } ];
      };
    };
#    defaultGateway = "45.142.114.1";
#    defaultGateway6 = {
#      address = "fe80::1";
#      interface = "ens18";
#    };
#
#    nameservers = [ "9.9.9.9" "2620:fe::fe" ];
  };
  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
  powerManagement = {
    cpuFreqGovernor = lib.mkDefault "powersave";
    powertop.enable = true;
    powerUpCommands = ''
      ${pkgs.hdparm}/sbin/hdparm -S 150 /dev/disk/by-uuid/57e6446d-faca-4b67-9063-e8d9afb80088
      ${pkgs.hdparm}/sbin/hdparm -S 150 /dev/disk/by-uuid/b9edc489-ac37-4b28-981d-442722df7ae2
    '';
  };
  
}