(ns distractionless.config
  (:require ["dart:io" :as io]
            [cljd.reader :as cljdreader]))

(defn read-from-file [^io/File file]
  (->> (.readAsStringSync file)
       cljdreader/read-string))

(defn write-to-file! [^io/File file content reloader]
  (->> content
       pr-str
       (.writeAsStringSync file))
  (when (some? reloader)
    (reset! reloader (when (= @reloader 0)
                       1
                       0))))

(defn update-config! [^io/File file func reloader]
  (let [new-content (-> (read-from-file file)
                        func)]
    (write-to-file! file new-content reloader)
    new-content))

(defn- init-key! [^io/File file reloader k dv]
  (when-not (contains? (read-from-file file) k)
    (prn (update-config! file #(assoc % k dv) reloader))))

(defn init-config! [^io/File file reloader]
  (when-not (.existsSync file)
    (.createSync file)
    (write-to-file! file {} reloader))
  (init-key! file reloader "favourites" #{})
  (init-key! file reloader "countdowns" {}))