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+;;; device.el --- Physical device information -*- lexical-binding: t -*-
+
+;; Author: William Carroll <wpcarro@gmail.com>
+;; Version: 0.0.1
+;; Package-Requires: ((emacs "25.1"))
+
+;;; Commentary:
+;; Functions for querying device information.
+
+;;; Code:
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Dependencies
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(require 'dash)
+(require 'al)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Library
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; TODO(wpcarro): Consider integrating this with Nix and depot instead of
+;; denormalizing the state.
+(defconst device-hostname->device
+  '(("zeno.lon.corp.google.com" . work-desktop-lon)
+    ("wpcarro.svl.corp.google.com" . work-desktop-svl)
+    ("seneca" . work-laptop)
+    ("marcus" . personal-laptop)
+    ("diogenes" . personal-vm))
+  "Mapping hostname to a device symbol.")
+
+;; TODO: Should I generate these predicates?
+
+(defun device-classify ()
+  "Return the device symbol for the current host or nil if not supported."
+  (al-get system-name device-hostname->device))
+
+(defun device-work-laptop? ()
+  "Return t if current device is work laptop."
+  (equal 'work-laptop
+         (device-classify)))
+
+(defun device-work-desktop? ()
+  "Return t if current device is work desktop."
+  (-contains? '(work-desktop-lon
+                work-desktop-svl)
+              (device-classify)))
+
+(defun device-corporate? ()
+  "Return t if the current device is owned by my company."
+  (-contains? '(work-desktop-lon
+                work-desktop-svl
+                work-laptop)
+              (device-classify)))
+
+(defun device-laptop? ()
+  "Return t if the current device is a laptop."
+  (-contains? '(work-laptop personal-laptop) (device-classify)))
+
+(provide 'device)
+;;; device.el ends here