# main default configuration

# NOTE: packages and fonts are configured in packages-fonts.nix

{ config, pkgs, host, username, options, lib, inputs, system, ... }: let

  inherit (import ./variables.nix) keyboardLayout;

  in {
    imports = [
      ./hardware.nix
      ./users.nix
      ./packages-fonts.nix
      # TODO
      # ../../modules/amd-drivers.nix
      # ../../modules/nvidia-drivers.nix
      # ../../modules/nvidia-prime-drivers.nix
      # ../../modules/intel-drivers.nix
      # ../../modules/vm-guest-services.nix
      # ../../modules/local-hardware-clock.nix
    ];

    # boot related stuff
    boot = {
      kernelPackages = pkgs.linuxPackages_zen; # zen kernel
      #kernelPackages = pkgs.linuxPackages_latest; # kernel

      kernelParams = [
        "systemd.mask=systemd-vconsole-setup.service"
        "systemd.mask=dev-tpmrm0.device" # this is to mask the 1.5 mins systemd bug
        "nowatchdog" 
        "modprobe.blacklist=sp5100_tco" # watchdog for AMD
        "modprobe.blacklist=iTCO_wdt" # watchdog for Intel
      ];

      # this is for OBS virtual cam support
      # kernelModules = [ "v4l2loopback" ];
      # extraModulePackages = [ config.boot.kernelPackages.v4l2loopback ];

      initrd = { 
        availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod" ];
        kernelModules = [ ];
      };

      # Needed For Some Steam Games
      #kernel.sysctl = {
      #  "vm.max_map_count" = 2147483642;
      #};

      # =======================================================================================
      # BOOT LOADERS: use ONLY one, either SystemD or GRUB
      # =======================================================================================
      # SystemD bootloader
      loader.systemd-boot.enable = true;

      loader.efi = {
        #efiSysMountPoint = "/efi"; # this is if you have separate /efi partition
	      canTouchEfiVariables = true;
      };

      loader.timeout = 5;

      # GRUB bootloader
      # Bootloader GRUB
      #loader.grub = {
        #enable = true;
        #  devices = [ "nodev" ];
        #  efiSupport = true;
        #  gfxmodeBios = "auto";
        #  memtest86.enable = true;
        #  extraGrubInstallArgs = [ "--bootloader-id=${host}" ];
        #  configurationName = "${host}";
        #	 };

      # Bootloader GRUB theme, configure below

      # =======================================================================================
      # END OF BOOTLOADERS
      # =======================================================================================

      # make /tmp a tmpfs
      tmp = {
        useTmpfs = false;
        tmpfsSize = "30%";
      };

      # appimage support
      binfmt.registrations.appimage = {
        wrapInterpreterInShell = false;
        interpreter = "${pkgs.appimage-run}/bin/appimage-run";
        recognitionType = "magic";
        offset = 0;
        mask = ''\xff\xff\xff\xff\x00\x00\x00\x00\xff\xff\xff'';
        magicOrExtension = ''\x7fELF....AI\x02'';
      };

      plymouth.enable = true;
    };

    # GRUB Bootloader theme. Of course you need to enable GRUB above.. duh! and also, enable it on flake.nix
    #distro-grub-themes = {
    #  enable = true;
    #  theme = "nixos";
    #};

    # extra module options
    drivers.amdgpu.enable = true;
    drivers.intel.enable = true;
    drivers.nvidia.enable = false;
    drivers.nvidia-prime = {
      enable = false;
      intelBusID = "";
      nvidiaBusID = "";
    };
    vm.guest-services.enable = false;
    local.hardware-clock.enable = false;

    # networking
    networking.networkmanager.enable = true;
    networking.hostName = "${host}";
    networking.timeServers = options.networking.timeServers.default ++ [ "pool.ntp.org" ];

    # Set your time zone.
    services.automatic-timezoned.enable = true; #based on IP location
    
    #https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
    #time.timeZone = "Europe/Oslo"; # Set local timezone

    # Select internationalisation properties.
    i18n.defaultLocale = "en_US.UTF-8";

    i18n.extraLocaleSettings = {
      LC_ADDRESS = "en_US.UTF-8";
      LC_IDENTIFICATION = "en_US.UTF-8";
      LC_MEASUREMENT = "en_US.UTF-8";
      LC_MONETARY = "en_US.UTF-8";
      LC_NAME = "en_US.UTF-8";
      LC_NUMERIC = "en_US.UTF-8";
      LC_PAPER = "en_US.UTF-8";
      LC_TELEPHONE = "en_US.UTF-8";
      LC_TIME = "en_US.UTF-8";
    };

    # services to start
    services = {
      xserver = {
        enable = false;
        xkb = {
          layout = "${keyboardLayout}";
          variant = "";
        };
      };

      greetd = {
        enable = true;
        vt = 3;
        settings = {
          default_session = {
            user = username;
            command = "${pkgs.greetd.tuigreet}/bin/tuigreet --time --cmd Hyprland"; # start Hyprland with a TUI login manager
          };
        };
      };

      smartd = {
        enable = false;
        autodetect = true;
      };

      gvfs.enable = true;
      tumbler.enable = true;

      pipewire = {
        enable = true;
        alsa.enable = true;
        alsa.support32Bit = true;
        pulse.enable = true;
        wireplumber.enable = true;
      };

      pulseaudio.enable = false; # unstable
      udev.enable = true;
      envfs.enable = true;
      dbus.enable = true;

      fstrim = {
        enable = true;
        interval = "weekly";
      };

      libinput.enable = true;

      rpcbind.enable = false;
      nfs.server.enable = false;

      openssh.enable = true;
      flatpak.enable = false;

      blueman.enable = true;

      # hardware.openrgb.enable = true;
      # hardware.openrgb.motherboard = "amd"

      fwupd.enable = true;

      upower.enable = true;

      gnome.gnome-keyring.enable = true;


      #avahi = {
      #  enable = true;
      #  nssmdns4 = true;
      #  openFirewall = true;
      #};

      #ipp-usb.enable = true;
    
      #syncthing = {
      #  enable = false;
      #  user = "${username}";
      #  dataDir = "/home/${username}";
      #  configDir = "/home/${username}/.config/syncthing";
      #};
    };

    systemd.services.flatpak-repo = {
      path = [ pkgs.flatpak ];
      script = ''
        flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
      '';
    };

    # zram
    zramSwap = {
      enable = true;
      priority = 100;
      memoryPercent = 30;
      swapDevices = 1;
      algorithm = "zstd";
    };

    powerManagement = {
      enable = true;
      cpuFreqGovernor = "schedutil";
    };

    #hardware.sane = {
    #  enable = true;
    #  extraBackends = [ pkgs.sane-airscan ];
    #  disabledDefaultBackends = [ "escl" ];
    #};

    # extra logitech support
    hardware.logitech.wireless.enable = false;
    hardware.logitech.wireless.enableGraphical = false;

    # bluetooth
    hardware = {
      bluetooth = {
        enable = true;
        powerOnBoot = true;
        settings = {
          General = {
            Enable = "Source,Sink,Media,Socket";
            Experimental = true;
          };
        };
      };
    };

    # security / polkit
    security.rtkit.enable = true;
    security.polkit.enable = true;
    security.polkit.extraConfig = ''
      polkit.addRule(function(action, subject) {
        if (
          subject.isInGroup("users")
            && (
              action.id == "org.freedesktop.login1.reboot" ||
              action.id == "org.freedesktop.login1.reboot-multiple-sessions" ||
              action.id == "org.freedesktop.login1.power-off" ||
              action.id == "org.freedesktop.login1.power-off-multiple-sessions"
            )
          )
        {
          return polkit.Result.YES;
        }
      })
    '';
    security.pam.services.swaylock = {
      text = ''
        auth include login
      '';
    };

    # Cachix, Optimization settings and garbage collection automation
    nix = {
      settings = {
        auto-optimise-store = true;
        experimental-features = [
          "nix-command"
          "flakes"
        ];
        substituters = [ "https://hyprland.cachix.org" ];
        trusted-public-keys = [ "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc=" ];
      };
      gc = {
        automatic = true;
        dates = "weekly";
        options = "--delete-older-than 7d";
      };
    };

      # Virtualization / Containers
    virtualisation.libvirtd.enable = false;
    virtualisation.podman = {
      enable = false;
      dockerCompat = false;
      defaultNetwork.settings.dns_enabled = false;
    };

    # OpenGL
    hardware.graphics = {
      enable = true;
    };

    console.keyMap = "${keyboardLayout}";

    # For Electron apps to use wayland
    environment.sessionVariables.NIXOS_OZONE_WL = "1";

    # Open ports in the firewall.
    # networking.firewall.allowedTCPPorts = [ ... ];
    # networking.firewall.allowedUDPPorts = [ ... ];
    # Or disable the firewall altogether.
    # networking.firewall.enable = false;

    # This value determines the NixOS release from which the default
    # settings for stateful data, like file locations and database versions
    # on your system were taken. It‘s perfectly fine and recommended to leave
    # this value at the release version of the first install of this system.
    # Before changing this value read the documentation for this option
    # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
    system.stateVersion = "24.11"; # Did you read the comment?
  }