import localeStrings from "@/nls/index.js";

/**
 * @param {String} strToLocalize
 * @returns
 */

let localeStringsSubset = [];

export function localize(strToLocalize) {
    return localeStringsSubset[strToLocalize] || strToLocalize;
}

export function _setUserLocale(user, config) {
    const global_locale =
        config.default_locale && config.default_locale != "auto" ? config.default_locale.toLowerCase() : false;

    let extra_user_preferences = {};
    if (user && user.attributes.preferences && "extra_user_preferences" in user.attributes.preferences) {
        extra_user_preferences = JSON.parse(user.attributes.preferences.extra_user_preferences);
    }

    let user_locale =
        "localization|locale" in extra_user_preferences
            ? extra_user_preferences["localization|locale"].toLowerCase()
            : false;

    if (user_locale == "auto") {
        user_locale = false;
    }

    const nav_locale =
        typeof navigator === "undefined"
            ? "__root"
            : (navigator.language || navigator.userLanguage || "__root").toLowerCase();

    const locale = user_locale || nav_locale || global_locale;

    sessionStorage.setItem("currentLocale", locale);
}

export function _getUserLocale(user, config) {
    let locale = null;
    if (Object.prototype.hasOwnProperty.call(localeStrings, "__root")) {
        locale = sessionStorage.getItem("currentLocale");
        if (locale) {
            localeStringsSubset =
                localeStrings["__" + locale] || localeStrings["__" + locale.split("-")[0]] || localeStrings.__root;
        }
    }
    return locale;
}

export default localize;