import { AppComponent } from '../app.component';

/*
Generator Should Check:
  -html
    translate(str, ...)
  -ts
    translate(str, ...)
*/
// @dynamic
export class Localization {
  private static shownErrors = [];

  private static error = function (error) {
    if (!Localization.shownErrors[error]) { // show error only one time
      console.error(error);
      Localization.shownErrors[error] = true;
    }
  }

  private static putArguments(str: string, args: string[]) {
    var result = str;

    var index = result.indexOf("{");
    while (index >= 0) {
      var endIndex = result.indexOf("}", index);
      var arg = Number(result.substring(index + 1, endIndex));

      if (isNaN(arg) || arg < 0 || arg >= args.length) {
        Localization.error("Localization: invalid argument '" + result.substring(index + 1, endIndex) + "'");
        return "---";
      }

      result = result.substring(0, index) + args[arg] + result.substring(endIndex + 1);
      index = result.indexOf("{");
    }

    return result;
  }

  static translate = function (str: string, ...args: string[]): string {
    if (AppComponent.user.language == AppComponent.client.localizations.default) return Localization.putArguments(str, args);

    var localizationFile = AppComponent.client.localizations[AppComponent.user.language];
    if (!localizationFile) {
      Localization.error("Localization: file not found! Language: '" + AppComponent.user.language + "'");
      return "---";
    }

    var translation = localizationFile[str];
    if (!translation) {
      Localization.error("Localization '" + AppComponent.user.language + "': missing item: '" + str + "'");
      translation = "---";
    }

    return Localization.putArguments(translation, args);
  }

  // framework default language is english. this translation is needed to convert them to default language, if default is a different language.
  static translateEn = function (str: string) {
    if (AppComponent.user.language == "en") return str;

    var localizationFile = AppComponent.client.localizations[AppComponent.user.language];
    if (!localizationFile) {
      Localization.error("Localization: file not found! Language: '" + AppComponent.user.language + "'");
      return "---";
    }

    if (!localizationFile[str]) {
      Localization.error("Localization '" + AppComponent.user.language + "': missing item: '" + str + "'");
      return "---";
    }

    return localizationFile[str];
  }
}