import { ILogger } from '@lenovo-software/lsa-clients-common';

export class LocalizeUtils {
    public static isLanguageRTL() {
        let uiLang = chrome.i18n.getUILanguage();
        return uiLang === 'ar';
    }

    public static localizeDialog() {
        let elements = document.getElementsByTagName('html');
        for (let i = 0; i < elements.length; i++) {
            let element = elements[i];
            let currentStr = element.innerHTML.toString();
            let newStr = currentStr.replace(/__MSG_(\w+)__/g, (match, v1) => {
                return v1 ? chrome.i18n.getMessage(v1) : '';
            });

            if (newStr !== currentStr) {
                element.innerHTML = newStr;
            }
        }

        if (document && document.body) {
            document.body.dir = this.isLanguageRTL() ? 'rtl' : 'ltr';
        }
    }

    public static getLanguageOnly(fromLocale: string) {
        if (!fromLocale || fromLocale.length === 0) {
            return '';
        }

        let n = fromLocale.indexOf('_');
        if (n < 0) {
            n = fromLocale.indexOf('-');
        }

        if (n < 0) {
            return fromLocale;
        }

        return fromLocale.substr(0, n);
    }

    public static getLanguage(logger?: ILogger) {
        let uiLang = chrome.i18n.getUILanguage();
        logger?.logMessage('Browser language: ' + uiLang);
        let lang = this.getLanguageOnly(uiLang);
        logger?.logMessage('Language returned from getLanguage(): ' + lang);
        return lang;
    }
}