import * as plugins from './smartntml.plugins.js';
import * as deesElement from '@designestate/dees-element';

export class Smartntml {
  // STATIC
  public static async create() {
    const smartntml = new Smartntml();
    return smartntml;
  }

  private static smartntmlSingletonDeferred: plugins.smartpromise.Deferred<Smartntml>;
  public static async createSingleton() {
    if (this.smartntmlSingletonDeferred) {
      return this.smartntmlSingletonDeferred.promise;
    }
    this.smartntmlSingletonDeferred = plugins.smartpromise.defer();
    const smartntmlInstance = await this.create();
    this.smartntmlSingletonDeferred.resolve(smartntmlInstance);
    return this.smartntmlSingletonDeferred.promise;
  }

  // INSTANCE
  private render = deesElement.render;
  public html = deesElement.html;
  public unsafeHTML = deesElement.unsafeHTML;

  constructor() {
  }

  public async renderTemplateResult(templateResult: deesElement.TemplateResult, stripCommentsArg = true) {
    const element = document.createElement('div');
    this.render(templateResult, element);
    let stringResult = element.innerHTML;
    if (stripCommentsArg) {
      stringResult = stringResult.replace(/<!--(.*?)-->/g, '');
    }
    return stringResult;
  }
}