Nomarchy/core/system/options.nix

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

let
  # Defaults live in lib/state-schema.nix so they can't drift between this
  # file, core/home/options.nix, and core/home/state.nix's `or` fallbacks.
  schema = import ../../lib/state-schema.nix { inherit lib; };
in
{
  options.nomarchy.system = {
    dns = lib.mkOption {
      type = lib.types.enum [ "Cloudflare" "Google" "DHCP" "Custom" ];
      default = schema.system.dns;
      description = "Selected DNS provider.";
    };
    customDns = lib.mkOption {
      type = lib.types.listOf lib.types.str;
      default = schema.system.customDns;
      description = "List of custom DNS servers.";
    };
    wifi = {
      powersave = lib.mkOption {
        type = lib.types.bool;
        default = schema.system.wifi.powersave;
        description = "Whether to enable wifi power saving.";
      };
    };
    timezone = lib.mkOption {
      type = lib.types.str;
      default = schema.system.timezone;
      description = "System timezone.";
    };
    formFactor = lib.mkOption {
      type = lib.types.enum [ "laptop" "desktop" ];
      default = "laptop";
      description = ''
        Physical form factor. Drives UI affordances (battery widget,
        future lid handling / TLP). Default "laptop" — battery widget
        is harmless on a desktop (renders empty when no BAT* is
        present), so the safe default is "show, don't hide". The
        installer auto-detects via /sys/class/power_supply/BAT* and
        writes the explicit value into the generated system.nix.
      '';
    };
    features = {
      fingerprint = lib.mkOption {
        type = lib.types.bool;
        default = schema.system.features.fingerprint;
        description = "Whether to enable fingerprint support.";
      };
      fido2 = lib.mkOption {
        type = lib.types.bool;
        default = schema.system.features.fido2;
        description = "Whether to enable FIDO2 support.";
      };
      hybridGPU = lib.mkOption {
        type = lib.types.bool;
        default = schema.system.features.hybridGPU;
        description = "Whether to enable hybrid GPU support (supergfxd).";
      };
    };
    theme = lib.mkOption {
      type = lib.types.str;
      default = schema.system.theme;
      description = ''
        Selected system theme. This is the declarative source of truth for
        system-level components (SDDM, Plymouth, browser policies).
      '';
    };

    # ----- Tier 1 system features (all opt-in, no behavioural change off) ---

    snapper = {
      enable = lib.mkEnableOption ''
        Snapper-driven BTRFS timeline snapshots of `/`. Auto-disables when
        `/` isn't BTRFS. Includes a `nixos-rebuild-snap` wrapper that takes
        a "Pre-rebuild" snapshot before each switch.
      '';
    };

    hibernation = {
      enable = lib.mkEnableOption ''
        suspend-then-hibernate (lid close, idle, power button). NOTE: this
        requires a disk swap device or swapfile sized to at least RAM —
        zRAM alone is not enough.
      '';
      idleMinutes = lib.mkOption {
        type = lib.types.int;
        default = 30;
        description = "Idle minutes before suspend-then-hibernate fires.";
      };
    };

    laptop = {
      enable = lib.mkOption {
        type = lib.types.bool;
        default = config.nomarchy.system.formFactor == "laptop";
        defaultText = lib.literalExpression ''config.nomarchy.system.formFactor == "laptop"'';
        description = ''
          Laptop power preset: TLP (with sane AC/battery governors),
          `services.upower`, `services.thermald` (x86_64), a brightnessctl
          udev rule, and a logind lid-switch policy. Force-disables
          `services.power-profiles-daemon` (mutually exclusive with TLP).
          Lid-close defers to `nomarchy.system.hibernation.enable`:
          suspend-then-hibernate when on, suspend otherwise. Defaults on
          when `formFactor = "laptop"`.
        '';
      };
      thermald = lib.mkOption {
        type = lib.types.bool;
        default = pkgs.stdenv.hostPlatform.isx86_64;
        defaultText = lib.literalExpression "pkgs.stdenv.hostPlatform.isx86_64";
        description = ''
          Enable `services.thermald` (Intel thermal daemon). Default true on
          x86_64. Harmless no-op on AMD; gated off on aarch64.
        '';
      };
    };

    desktop = {
      enable = lib.mkOption {
        type = lib.types.bool;
        default = config.nomarchy.system.formFactor == "desktop";
        defaultText = lib.literalExpression ''config.nomarchy.system.formFactor == "desktop"'';
        description = ''
          Desktop preset: pins `powerManagement.cpuFreqGovernor` to
          `"performance"` and enables `services.zfs.autoScrub` and
          `services.zfs.trim` so a future ZFS pool gets sensible
          maintenance without further config. The ZFS knobs are no-ops
          until the user adds `boot.supportedFilesystems = [ "zfs" ]`
          and a pool. Defaults on when `formFactor = "desktop"`. Battery
          widget filtering is already handled by `formFactor` itself in
          `features/desktop/waybar/default.nix`.
        '';
      };
    };

    accessibility = {
      enable = lib.mkEnableOption ''
        Accessibility preset: AT-SPI2 framework, the Orca screen reader
        on PATH, and a larger default cursor size. Off by default —
        accessibility is a personal preference, not a hardware-derived
        signal. The Hyprland-side keybinding to launch Orca is a
        separate roadmap item.
      '';
      cursorSize = lib.mkOption {
        type = lib.types.int;
        default = 32;
        description = ''
          XCURSOR_SIZE when accessibility is on. NixOS default is 24;
          32 is a safer floor for low-vision users. Bump to 48 if the
          user explicitly asks.
        '';
      };
    };

    gaming = {
      enable = lib.mkEnableOption ''
        Gaming preset: Steam (with remote-play firewall holes),
        gamemode (CPU governor + nice on Steam launch via the user's
        gamemode group), and flatpak. NOTE: flatpak's flathub remote
        is not added declaratively — after first boot, run
        `flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo`.
        The Hyprland fullscreen-on-Steam-launch window rule is a
        separate roadmap item.
      '';
    };

    containers = {
      enable = lib.mkEnableOption ''
        Rootless Podman with Docker compatibility (`docker` → `podman`),
        plus podman-compose, podman-tui and dive.
      '';
    };

    virtualization = {
      libvirt = {
        enable = lib.mkEnableOption ''
          libvirt daemon + virt-manager + OVMF. The user must be in the
          `libvirtd` group.
        '';
      };
      docker = {
        enable = lib.mkEnableOption ''
          Docker daemon + docker-compose. The user must be in the `docker`
          group.
        '';
      };
    };

    keyring = {
      enable = lib.mkOption {
        type = lib.types.bool;
        default = true;
        description = ''
          Auto-unlock GNOME Keyring at SDDM/Hyprland login and route SSH
          keys through `gcr-ssh-agent`. Default on — near-universal QoL
          improvement.
        '';
      };
    };

    inputMethod = {
      enable = lib.mkEnableOption ''
        fcitx5 input method (CJK / IME). Wires NixOS's i18n.inputMethod and
        autostarts fcitx5-daemon. Adds a small footprint when enabled, so
        most users want this off.
      '';
    };
  };
}