{ config, pkgs, lib, ... }:
with builtins // lib;
let
  devices = import ../../data/devices.nix;

  hardware = mkOption {
    type = types.strMatching ''^kobo[0-9]+$'';
  };
  deviceID = mkOption {
    type = types.strMatching ''^00000000-0000-0000-0000-000000000[0-9][0-9][0-9]$'';
  };

  deviceInfo = types.submodule {
    options = {
      inherit hardware deviceID;
    };
  };
in {
  options = {
    _allDevices = mkOption {
      default = devices;
      readOnly = true;
      internal = true;
      type = types.attrsOf deviceInfo;
    };

    device = {
      name = mkOption {
        type = types.enum (attrNames devices);
      };

      affiliate = mkOption {
        type = types.enum (import ../../data/affiliates.nix);
        default = "kobo";
      };

      hardware = hardware // {
        default = config._allDevices.${config.device.name}.hardware;
      };

      deviceID = deviceID // {
        default = config._allDevices.${config.device.name}.deviceID;
      };

      serialNumber = mkOption {
        type = types.str;
        default = "N0";
      };
    };
  };
}