General URI Query Param to ClojureScript datastructure function

uri_parser.cljs

;; Remember to (:import goog.Uri) in your ns declaration
;; Example input/output:
;; http://localhost:10555/?model=duck&manual-tick=false&collapse-all=true&capture-first-frame=true&skybox-name=sky1.png&age=30&money=300.30
;; => {:model                "duck",
;;     :tick-first-frame?    false,
;;     :manual-tick?         false,
;;     :collapse-all?        true,
;;     :capture-first-frame? true,
;;     :skybox-name          ["sky1" "png"],
;;     :age                  30,
;;     :money                300.3}
(defn uri-param [parsed-uri param-name & [not-found]]
  (let [v (.getParameterValue parsed-uri param-name)]
    (cond
      (= v "")                          [(keyword param-name) not-found]
      (undefined? v)                    [(keyword param-name) not-found]
      (= v "true")                      [(keyword (str param-name "?")) true]
      (= v "false")                     [(keyword (str param-name "?")) false]
      (= (.toString (js/parseInt v)) v) [(keyword param-name) (js/parseInt v)]
      (re-matches #"^\d+\.\d*" v)       [(keyword param-name) (js/parseFloat v)]
      :else                             [(keyword param-name) v])))

(def initial-query-map
  (let [parsed-uri (goog.Uri. (.. js/window -location -href))
        ks         (.. parsed-uri getQueryData getKeys)
        defaults   {:model                default-model
                    :tick-first-frame?    false
                    :manual-tick?         false
                    :collapse-all?        false
                    :capture-first-frame? false}
        initial    (reduce merge {} (map (partial uri-param parsed-uri) (clj->js ks)))
        ;; Use this if you need to do any fn-based changes, e.g. split on a uri param
        special {:skybox-name (when-let [skybox-name (second (uri-param parsed-uri "skybox-name" "sky1.png"))]
                                (vec (string/split skybox-name ".")))}]
    (merge defaults initial special)))