;; SPDX-License-Identifier: Apache-2.0
;; SPDX-FileCopyrightText: 2022 Sebastian Crane <seabass-labrax@gmx.com>

(ns system
  (:require [clojure.data.json :as json]
            [clj-yaml.core :as yaml]))

(defn json-data-reader [key value]
  (if (= key :games)
    (into (empty value)
          (map #(hash-map (first %)
                          (set (second %)))
               value))
    value))

(defn load-state [f]
  (try
    (with-open [datafile (clojure.java.io/reader f)]
      (json/read datafile
                 :value-fn json-data-reader
                 :key-fn keyword))
    (catch Exception e nil)))

(defn save-state [f data]
  (try
    (with-open [datafile (clojure.java.io/writer f)]
      (json/write data datafile))
    (catch Exception e nil)))

(defn load-config [f]
  (try
    (with-open [datafile (clojure.java.io/reader f)]
      (yaml/parse-stream datafile))
    (catch Exception e nil)))