class CcDate {
  constructor(locale) {
    this.locale = locale;

    if (!this.toLocaleDateStringSupportsLocales()) {
      console.log(
        '%cDates: %cBrowser does not support international locales',
        'color:red;font-weight:bold;',
        'color:initial;font-weight:initial;'
      );
      this.locale = 'en-US';
    }
  }

  toLocaleDateStringSupportsLocales() {
    return typeof Intl === 'object' && !!Intl && typeof Intl.DateTimeFormat === 'function';
  }

  render() {
    const today = new Date();
    const options = {
      year: 'numeric',
      month: 'long',
      day: 'numeric',
    };

    const optionsShort = {
      year: 'numeric',
      month: 'short',
      day: 'numeric',
    };
    const elements = document.querySelectorAll(`[data-days-ago]`);

    for (let i = 0; i < elements.length; ++i) {
      const dateCopy = new Date(today);
      const daysAgo = elements[i].dataset.daysAgo;
      const date = dateCopy.setDate(dateCopy.getDate() - daysAgo);
      elements[i].innerHTML = new Date(date).toLocaleString(this.locale, options);
    }

    const elementsShort = document.querySelectorAll(`[data-days-ago-short]`);

    for (let i = 0; i < elementsShort.length; ++i) {
      const dateCopy = new Date(today);
      const daysAgo = elementsShort[i].dataset.daysAgoShort;
      const date = dateCopy.setDate(dateCopy.getDate() - daysAgo);
      elementsShort[i].innerHTML = new Date(date).toLocaleString(this.locale, optionsShort);
    }
  }
}

window.addEventListener('load', () => {
  const userLocale = options.locale;
  const ccDateInstance = new CcDate(userLocale);
  ccDateInstance.render();
});