(ns status-im.i18n
  (:require
   [status-im.react-native.js-dependencies :as rn-dependencies]
   [clojure.string :as string]
   [status-im.i18n-resources :as i18n-resources]
   [status-im.goog.i18n-module :as goog.i18n]))

(set! (.-locale rn-dependencies/i18n) (name i18n-resources/default-device-language))
(set! (.-fallbacks rn-dependencies/i18n) true)
(set! (.-defaultSeparator rn-dependencies/i18n) "/")

(set! (.-translations rn-dependencies/i18n)
      (clj->js i18n-resources/translations-by-locale))

(defn set-language [lang]
  (i18n-resources/load-language lang)
  (set! (.-locale rn-dependencies/i18n) lang))

;;:zh, :zh-hans-xx, :zh-hant-xx have been added until this bug will be fixed https://github.com/fnando/i18n-js/issues/460

(def delimeters
  "This function is a hack: mobile Safari doesn't support toLocaleString(), so we need to pass
  this map to WKWebView to make number formatting work."
  (let [n          (.toLocaleString (js/Number 1000.1))
        delimiter? (= (count n) 7)]
    (if delimiter?
      {:delimiter (subs n 1 2)
       :separator (subs n 5 6)}
      {:delimiter ""
       :separator (subs n 4 5)})))

(defn label-number [number]
  (when number
    (let [{:keys [delimiter separator]} delimeters]
      (.toNumber rn-dependencies/i18n
                 (string/replace number #"," ".")
                 (clj->js {:precision                 10
                           :strip_insignificant_zeros true
                           :delimiter                 delimiter
                           :separator                 separator})))))

(def default-option-value "<no value>")

(defn label-options [options]
  ;; i18n ignores nil value, leading to misleading messages
  (into {} (for [[k v] options] [k (or v default-option-value)])))

(defn label
  ([path] (label path {}))
  ([path options]
   (if (exists? rn-dependencies/i18n.t)
     (let [options (update options :amount label-number)]
       (.t rn-dependencies/i18n (name path) (clj->js (label-options options))))
     (name path))))

(defn label-pluralize [count path & options]
  (if (exists? rn-dependencies/i18n.t)
    (.p rn-dependencies/i18n count (name path) (clj->js options))
    (name path)))

(def locale
  (.-locale rn-dependencies/i18n))

(def format-currency goog.i18n/format-currency)