add-to-calendar-button/dist/module/unstyle/index.js

A convenient JavaScript snippet, which lets you create beautiful buttons, where people can add events to their calendars.

import { tzlib_get_ical_block, tzlib_get_offset, tzlib_get_timezones } from 'timezones-ical-library';
/*!
 *  @preserve
 *
 *  ++++++++++++++++++++++
 *  Add to Calendar Button
 *  ++++++++++++++++++++++
 *
 *  Version: 2.8.8
 *  Creator: Jens Kuerschner (https://jekuer.com)
 *  Project: https://github.com/add2cal/add-to-calendar-button
 *  License: Elastic License 2.0 (ELv2) (https://github.com/add2cal/add-to-calendar-button/blob/main/LICENSE.txt)
 *  Note:    DO NOT REMOVE THE COPYRIGHT NOTICE ABOVE!
 *
 */
const atcbVersion = '2.8.8';
const atcbCssTemplate = {};
const atcbIsBrowser = () => {
  if (typeof window === 'undefined') {
    return false;
  } else {
    return true;
  }
};
const atcbIsiOS = atcbIsBrowser()
  ? () => {
      if (/iPad|iPhone|iPod/i.test(navigator.userAgent) && !/MSStream/i.test(navigator.userAgent)) {
        return true;
      } else {
        return false;
      }
    }
  : () => {
      return false;
    };
const atcbIsAndroid = atcbIsBrowser()
  ? () => {
      if (/android/i.test(navigator.userAgent) && !/MSStream/i.test(navigator.userAgent)) {
        return true;
      } else {
        return false;
      }
    }
  : () => {
      return false;
    };
/*const atcbIsChrome = atcbIsBrowser()
  ? () => {
      if (/chrome|chromium|crios|google inc/i.test(navigator.userAgent)) {
        return true;
      } else {
        return false;
      }
    }
  : () => {
      return false;
    };*/
const atcbIsSafari = atcbIsBrowser()
  ? () => {
      if (/^(?:(?!chrome|android|crios|fxios).)*safari/i.test(navigator.userAgent)) {
        return true;
      } else {
        return false;
      }
    }
  : () => {
      return false;
    };
const atcbIsMobile = () => {
  if (atcbIsAndroid() || atcbIsiOS()) {
    return true;
  } else {
    return false;
  }
};
const atcbIsWebView = atcbIsBrowser()
  ? () => {
      if (/; ?wv|(?:iPhone|iPod|iPad).*AppleWebKit(?!.*Safari)/i.test(navigator.userAgent)) {
        return true;
      } else {
        return false;
      }
    }
  : () => {
      return false;
    };
const atcbIsProblematicWebView = atcbIsBrowser()
  ? () => {
      if (/Instagram/i.test(navigator.userAgent)) {
        return true;
      } else {
        return false;
      }
    }
  : () => {
      return false;
    };
const atcbDefaultTarget = atcbIsWebView() ? '_system' : '_blank';
const atcbOptions = ['apple', 'google', 'ical', 'ms365', 'outlookcom', 'msteams', 'yahoo'];
const atcbValidRecurrOptions = ['apple', 'google', 'ical'];
const atcbInvalidSubscribeOptions = ['msteams'];
const atcbIOSInvalidOptions = ['ical'];
const atcbAndroidInvalidOptions = ['apple'];
const atcbStates = [];
const atcbWcParams = [
  'debug',
  'proOverride',
  'cspnonce',
  'identifier',
  'name',
  'dates',
  'description',
  'startDate',
  'startTime',
  'endDate',
  'endTime',
  'timeZone',
  'useUserTZ',
  'location',
  'status',
  'uid',
  'organizer',
  'attendee',
  'icsFile',
  'images',
  'recurrence',
  'recurrence_until',
  'recurrence_byDay',
  'recurrence_byMonth',
  'recurrence_byMonthDay',
  'recurrence_weekstart',
  'sequence',
  'recurrence_interval',
  'recurrence_count',
  'availability',
  'created',
  'updated',
  'subscribe',
  'options',
  'optionsMobile',
  'optionsIOS',
  'iCalFileName',
  'listStyle',
  'buttonStyle',
  'trigger',
  'hideIconButton',
  'hideIconList',
  'hideIconModal',
  'hideTextLabelButton',
  'hideTextLabelList',
  'buttonsList',
  'hideBackground',
  'hideCheckmark',
  'hideBranding',
  'size',
  'label',
  'inline',
  'inlineRsvp',
  'customLabels',
  'customCss',
  'lightMode',
  'language',
  'hideRichData',
  'bypassWebViewCheck',
  'blockInteraction',
  'styleLight',
  'styleDark',
  'disabled',
  'hidden',
  'hideButton',
  'pastDateHandling',
  'proxy',
  'fakeMobile',
  'fakeIOS',
  'fakeAndroid',
  'forceOverlay',
  'rsvp',
  'ty',
  'customVar',
  'domain',
  'dev',
];
const atcbWcProParams = [
  'debug',
  'proOverride',
  'cspnonce',
  'attendee',
  'images',
  'size',
  'inline',
  'inlineRsvp',
  'customLabels',
  'customCss',
  'lightMode',
  'language',
  'bypassWebViewCheck',
  'blockInteraction',
  'styleLight',
  'styleDark',
  'disabled',
  'hidden',
  'fakeMobile',
  'fakeIOS',
  'fakeAndroid',
  'forceOverlay',
  'customVar',
  'proxy',
  'domain',
  'dev',
];
const atcbWcBooleanParams = [
  'debug',
  'proOverride',
  'useUserTZ',
  'hideIconButton',
  'hideIconList',
  'hideIconModal',
  'hideTextLabelButton',
  'hideTextLabelList',
  'subscribe',
  'hideBackground',
  'hideCheckmark',
  'hideBranding',
  'inlineRsvp',
  'hideRichData',
  'buttonsList',
  'inline',
  'bypassWebViewCheck',
  'blockInteraction',
  'disabled',
  'hidden',
  'hideButton',
  'proxy',
  'fakeMobile',
  'fakeIOS',
  'fakeAndroid',
  'forceOverlay',
  'dev',
];
const atcbWcObjectParams = ['customLabels', 'ty', 'rsvp', 'customVar'];
const atcbWcObjectArrayParams = ['dates'];
const atcbWcArrayParams = ['images', 'options', 'optionsMobile', 'optionsIOS'];
const atcbWcNumberParams = ['sequence', 'recurrence_interval', 'recurrence_count'];
const atcbIcon = {
  trigger:
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  apple:
    '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 245.657"><path d="M167.084 130.514c-.308-31.099 25.364-46.022 26.511-46.761-14.429-21.107-36.91-24.008-44.921-24.335-19.13-1.931-37.323 11.27-47.042 11.27-9.692 0-24.67-10.98-40.532-10.689-20.849.308-40.07 12.126-50.818 30.799-21.661 37.581-5.54 93.281 15.572 123.754 10.313 14.923 22.612 31.688 38.764 31.089 15.549-.612 21.433-10.073 40.242-10.073s24.086 10.073 40.546 9.751c16.737-.308 27.34-15.214 37.585-30.187 11.855-17.318 16.714-34.064 17.009-34.925-.372-.168-32.635-12.525-32.962-49.68l.045-.013zm-30.917-91.287C144.735 28.832 150.524 14.402 148.942 0c-12.344.503-27.313 8.228-36.176 18.609-7.956 9.216-14.906 23.904-13.047 38.011 13.786 1.075 27.862-7.004 36.434-17.376z"/></svg>',
  google:
    '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><path d="M152.637 47.363H47.363v105.273h105.273z" fill="#fff"/><path d="M152.637 200L200 152.637h-47.363z" fill="#f72a25"/><path d="M200 47.363h-47.363v105.273H200z" fill="#fbbc04"/><path d="M152.637 152.637H47.363V200h105.273z" fill="#34a853"/><path d="M0 152.637v31.576A15.788 15.788 0 0 0 15.788 200h31.576v-47.363z" fill="#188038"/><path d="M200 47.363V15.788A15.79 15.79 0 0 0 184.212 0h-31.575v47.363z" fill="#1967d2"/><path d="M15.788 0A15.79 15.79 0 0 0 0 15.788v136.849h47.363V47.363h105.274V0z" fill="#4285f4"/><path d="M68.962 129.02c-3.939-2.653-6.657-6.543-8.138-11.67l9.131-3.76c.83 3.158 2.279 5.599 4.346 7.341 2.051 1.742 4.557 2.588 7.471 2.588 2.995 0 5.55-.911 7.699-2.718 2.148-1.823 3.223-4.134 3.223-6.934 0-2.865-1.139-5.208-3.402-7.031s-5.111-2.718-8.496-2.718h-5.273v-9.033h4.736c2.913 0 5.387-.781 7.389-2.376 2.002-1.579 2.995-3.743 2.995-6.494 0-2.441-.895-4.395-2.686-5.859s-4.053-2.197-6.803-2.197c-2.686 0-4.818.716-6.396 2.148s-2.767 3.255-3.451 5.273l-9.033-3.76c1.204-3.402 3.402-6.396 6.624-8.984s7.34-3.89 12.337-3.89c3.695 0 7.031.716 9.977 2.148s5.257 3.418 6.934 5.941c1.676 2.539 2.507 5.387 2.507 8.545 0 3.223-.781 5.941-2.327 8.187-1.546 2.23-3.467 3.955-5.729 5.143v.537a17.39 17.39 0 0 1 7.34 5.729c1.904 2.572 2.865 5.632 2.865 9.212s-.911 6.771-2.718 9.57c-1.823 2.799-4.329 5.013-7.52 6.624s-6.787 2.425-10.775 2.425c-4.622 0-8.887-1.318-12.826-3.988zm56.087-45.312l-10.026 7.243-5.013-7.601 17.985-12.972h6.901v61.198h-9.847z" fill="#1a73e8"/></svg>',
  ical: '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200.016"><path d="M132.829 7.699c0-4.248 4.199-7.699 9.391-7.699s9.391 3.451 9.391 7.699v33.724c0 4.248-4.199 7.699-9.391 7.699s-9.391-3.451-9.391-7.699zm-25.228 161.263c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm-81.803-59.766c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.902 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.902 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.918 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zM25.798 139.079c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.902 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.902 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.918 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zM25.798 168.962c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zm40.902 0c-.553 0-.993-2.327-.993-5.208s.439-5.208.993-5.208h25.7c.553 0 .993 2.327.993 5.208s-.439 5.208-.993 5.208zM48.193 7.699C48.193 3.451 52.393 0 57.585 0s9.391 3.451 9.391 7.699v33.724c0 4.248-4.199 7.699-9.391 7.699s-9.391-3.451-9.391-7.699zM10.417 73.763h179.15V34.945c0-1.302-.537-2.49-1.4-3.369-.863-.863-2.051-1.4-3.369-1.4h-17.155c-2.881 0-5.208-2.327-5.208-5.208s2.327-5.208 5.208-5.208h17.171c4.183 0 7.975 1.709 10.726 4.46S200 30.762 200 34.945v44.043 105.843c0 4.183-1.709 7.975-4.46 10.726s-6.543 4.46-10.726 4.46H15.186c-4.183 0-7.975-1.709-10.726-4.46C1.709 192.79 0 188.997 0 184.814V78.971 34.945c0-4.183 1.709-7.975 4.46-10.726s6.543-4.46 10.726-4.46h18.343c2.881 0 5.208 2.327 5.208 5.208s-2.327 5.208-5.208 5.208H15.186c-1.302 0-2.49.537-3.369 1.4-.863.863-1.4 2.051-1.4 3.369zm179.167 10.433H10.417v100.618c0 1.302.537 2.49 1.4 3.369.863.863 2.051 1.4 3.369 1.4h169.629c1.302 0 2.49-.537 3.369-1.4.863-.863 1.4-2.051 1.4-3.369zM82.08 30.176c-2.881 0-5.208-2.327-5.208-5.208s2.327-5.208 5.208-5.208h34.977c2.881 0 5.208 2.327 5.208 5.208s-2.327 5.208-5.208 5.208z"/></svg>',
  msteams:
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  outlookcom:
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async function atcb_decorate_data(data) {
  data = atcb_decorate_data_boolean(data);
  data.timeZone = atcb_decorate_data_timezone(data.timeZone);
  data = atcb_decorate_data_rrule(data);
  data = atcb_decorate_data_options(data);
  data = atcb_decorate_data_style(data);
  data.sizes = atcb_decorate_sizes(data.size);
  data.lightMode = atcb_decorate_light_mode(data.lightMode);
  data = atcb_decorate_data_i18n(data);
  data = atcb_decorate_data_dates(data);
  data = atcb_decorate_data_meta(data);
  data = atcb_decorate_data_extend(data);
  data = atcb_decorate_data_button_status_handling(data);
  data = await atcb_decorate_data_rsvp(data);
  return data;
}
function atcb_decorate_data_boolean(data) {
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    const attr = atcbWcBooleanParams[`${i}`];
    if (data[`${attr}`]) {
      if (typeof data[`${attr}`] !== 'boolean') {
        const val = data[`${attr}`].toString().trim().toLowerCase() || '';
        data[`${attr}`] = val === '' || val === 'true' ? true : false;
      }
    } else {
      data[`${attr}`] = false;
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  }
  return data;
}
function atcb_decorate_data_timezone(tz = null) {
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}
function atcb_decorate_data_rrule(data) {
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    if (!/^(?:RRULE:[\w=;,:+\-/\\]+|daily|weekly|monthly|yearly)$/im.test(data.recurrence)) {
      data.recurrence = '!wrong rrule format!';
    } else {
      if (/^RRULE:/i.test(data.recurrence)) {
        data.recurrence_simplyfied = false;
        const rruleParts = data.recurrence.substring(6).split(';');
        const rruleObj = new Object();
        rruleParts.forEach(function (rule) {
          rruleObj[rule.split('=')[0]] = rule.split('=')[1];
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        data.recurrence_until = rruleObj.UNTIL ? rruleObj.UNTIL : '';
        data.recurrence_count = rruleObj.COUNT ? rruleObj.COUNT : '';
        data.recurrence_byDay = rruleObj.BYDAY ? rruleObj.BYDAY : '';
        data.recurrence_byMonth = rruleObj.BYMONTH ? rruleObj.BYMONTH : '';
        data.recurrence_byMonthDay = rruleObj.BYMONTHDAY ? rruleObj.BYMONTHDAY : '';
        data.recurrence_interval = rruleObj.INTERVAL ? rruleObj.INTERVAL : 1;
        data.recurrence_frequency = rruleObj.FREQ ? rruleObj.FREQ : '';
      } else {
        data.recurrence_simplyfied = true;
        if (!data.recurrence_interval || data.recurrence_interval === '') {
          data.recurrence_interval = 1;
        }
        if (!data.recurrence_weekstart || (data.recurrence_weekstart === '') | (data.recurrence_weekstart.length > 2)) {
          data.recurrence_weekstart = 'MO';
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        data.recurrence_frequency = data.recurrence;
        data.recurrence = 'RRULE:FREQ=' + data.recurrence + ';WKST=' + data.recurrence_weekstart + ';INTERVAL=' + data.recurrence_interval;
        if (data.recurrence_until && data.recurrence_until !== '') {
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            data.recurrence = data.recurrence + ';UNTIL=' + data.recurrence_until.replace(/-/g, '').slice(0, 8);
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          data.recurrence = data.recurrence + ';BYDAY=' + data.recurrence_byDay;
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        if (data.recurrence_byMonthDay && data.recurrence_byMonthDay !== '') {
          data.recurrence = data.recurrence + ';BYMONTHDAY=' + data.recurrence_byMonthDay;
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}
function atcb_decorate_data_options(data) {
  const theOptions = (function () {
    if (atcbIsiOS() || data.fakeIOS) {
      if (data.optionsIOS && data.optionsIOS.length > 0) {
        return data.optionsIOS;
      }
      if (data.optionsMobile && data.optionsMobile.length > 0) {
        return data.optionsMobile;
      }
    }
    if ((atcbIsAndroid() || data.fakeMobile || data.fakeAndroid) && data.optionsMobile && data.optionsMobile.length > 0) {
      return data.optionsMobile;
    }
    return data.options || ['ical'];
  })();
  let newOptions = [];
  let iCalGiven = false;
  let appleGiven = false;
  for (let i = 0; i < theOptions.length; i++) {
    const cleanOption = theOptions[`${i}`].split('|');
    const optionName = cleanOption[0].toLowerCase().replace('microsoft', 'ms').replace(/\./, '');
    if (optionName === 'apple') {
      appleGiven = true;
    }
    if (optionName === 'ical') {
      iCalGiven = true;
    }
    if (
      ((atcbIsiOS() || data.fakeIOS) && atcbIOSInvalidOptions.includes(optionName)) ||
      ((atcbIsAndroid() || data.fakeAndroid) && atcbAndroidInvalidOptions.includes(optionName)) ||
      (data.recurrence && data.recurrence !== '' && (!atcbValidRecurrOptions.includes(optionName) || (data.recurrence_until && data.recurrence_until !== '' && (optionName === 'apple' || optionName === 'ical')) || ((atcbIsiOS() || data.fakeIOS) && optionName === 'google'))) ||
      (data.subscribe && atcbInvalidSubscribeOptions.includes(optionName))
    ) {
      continue;
    }
    if ((atcbIsMobile() || data.fakeMobile) && data.subscribe && (optionName === 'ms365' || optionName === 'outlookcom')) {
      continue;
    }
    newOptions.push(optionName);
  }
  if (data.subscribe && data.icsFile && data.icsFile.startsWith('https://calendar.google.com/calendar/') && !data.icsFile.endsWith('.ics')) {
    newOptions = ['google'];
  }
  if (newOptions.length === 0) {
    if (!atcbIsiOS() && !data.fakeIOS) {
      newOptions.push('ical');
    }
    iCalGiven = true;
  }
  if ((atcbIsiOS() || data.fakeIOS) && iCalGiven && !appleGiven) {
    newOptions.push('apple');
  }
  if ((atcbIsAndroid() || data.fakeAndroid) && appleGiven && !iCalGiven) {
    newOptions.push('ical');
  }
  newOptions.sort();
  data.options = newOptions;
  return data;
}
function atcb_decorate_data_style(data) {
  if (data.inlineRSVP) {
    data.inline = true;
  }
  if (!data.listStyle || data.listStyle === '') {
    data.listStyle = 'dropdown';
  }
  if (data.listStyle === 'modal') {
    data.trigger = 'click';
  }
  if (data.buttonStyle && data.buttonStyle !== '' && data.buttonStyle != 'default') {
    if (data.buttonStyle == 'round' || data.buttonStyle == 'text' || data.buttonStyle == 'date' || data.buttonStyle == 'neumorphism') {
      data.trigger = 'click';
    }
  } else {
    data.buttonStyle = 'default';
  }
  if ((data.buttonStyle == 'default' || data.buttonStyle == '3d' || data.buttonStyle == 'flat') && !data.hideTextLabelList && data.hideTextLabelButton && (data.listStyle == 'dropdown' || data.listStyle == 'dropdown-static' || data.listStyle == 'dropup-static')) {
    data.listStyle = 'overlay';
  }
  if (data.buttonsList && data.buttonStyle == 'date') {
    data.buttonsList = false;
  }
  return data;
}
function atcb_decorate_sizes(size) {
  const sizes = [];
  sizes['l'] = sizes['m'] = sizes['s'] = 16;
  if (size && size !== '') {
    const sizeParts = size.split('|');
    for (let i = 0; i < sizeParts.length; i++) {
      sizeParts[`${i}`] = parseInt(sizeParts[`${i}`]);
    }
    if (sizeParts[0] >= 0 && sizeParts[0] < 11) {
      sizes['l'] = sizes['m'] = sizes['s'] = 10 + sizeParts[0];
    }
    if (sizeParts.length > 2) {
      if (sizeParts[1] >= 0 && sizeParts[1] < 11) {
        sizes['m'] = 10 + sizeParts[1];
      }
      if (sizeParts[2] >= 0 && sizeParts[2] < 11) {
        sizes['s'] = 10 + sizeParts[2];
      }
    } else if (sizeParts.length == 2) {
      if (sizeParts[1] >= 0 && sizeParts[1] < 11) {
        sizes['m'] = sizes['s'] = 10 + sizeParts[1];
      }
    }
  }
  return sizes;
}
function atcb_decorate_light_mode(lightMode = '') {
  if (lightMode == 'system' && atcbIsBrowser()) {
    const prefersDarkScheme = window.matchMedia('(prefers-color-scheme: dark)');
    return prefersDarkScheme.matches ? 'dark' : 'light';
  }
  if (lightMode != 'bodyScheme' && lightMode != 'dark') {
    return 'light';
  }
  return lightMode;
}
function atcb_decorate_data_i18n(data) {
  if (!data.language || data.language === '' || !availableLanguages.includes(data.language)) {
    data.language = 'en';
  }
  if (data.language.length > 2) {
    data.language = data.language.substring(0, 2);
  }
  if (rtlLanguages.includes(data.language)) {
    data.rtl = true;
  } else {
    data.rtl = false;
  }
  return data;
}
function atcb_decorate_data_dates(data) {
  if (data.dates && data.dates.length > 0) {
    for (let i = 0; i < data.dates.length; i++) {
      if (!data.dates[`${i}`].timeZone && data.timeZone) {
        data.dates[`${i}`].timeZone = data.timeZone;
      }
      if (!data.dates[`${i}`].useUserTZ && data.useUserTZ) {
        data.dates[`${i}`].useUserTZ = data.useUserTZ;
      }
      const cleanedUpDates = atcb_date_cleanup(data.dates[`${i}`]);
      data.dates[`${i}`].startDate = cleanedUpDates.startDate;
      data.dates[`${i}`].endDate = cleanedUpDates.endDate;
      data.dates[`${i}`].startTime = cleanedUpDates.startTime;
      data.dates[`${i}`].endTime = cleanedUpDates.endTime;
      data.dates[`${i}`].timeZone = cleanedUpDates.timeZone;
      data.dates[`${i}`].timestamp = atcb_date_specials_calculation('timestamp', data.dates[`${i}`].startDate, data.dates[`${i}`].startTime, data.dates[`${i}`].timeZone);
      data.dates[`${i}`].overdue = atcb_date_specials_calculation('overdue', data.dates[`${i}`].endDate, data.dates[`${i}`].endTime, data.dates[`${i}`].timeZone);
    }
  } else {
    data.dates = [];
    data.dates[0] = new Object();
    if (data.useUserTZ) data.dates[0].useUserTZ = data.useUserTZ;
    const cleanedUpDates = atcb_date_cleanup(data);
    data.startDate = data.dates[0].startDate = cleanedUpDates.startDate;
    data.endDate = data.dates[0].endDate = cleanedUpDates.endDate;
    data.startTime = data.dates[0].startTime = cleanedUpDates.startTime;
    data.endTime = data.dates[0].endTime = cleanedUpDates.endTime;
    data.timeZone = data.dates[0].timeZone = cleanedUpDates.timeZone;
    if (!data.recurrence) {
      data.dates[0].overdue = atcb_date_specials_calculation('overdue', data.endDate, data.endTime, data.timeZone);
    } else {
      data.dates[0].overdue = false;
    }
  }
  const now = new Date();
  if (!data.created || data.created === '') {
    data.created = atcb_format_datetime(now, 'clean', true);
  }
  if (!data.updated || data.updated === '') {
    data.updated = atcb_format_datetime(now, 'clean', true);
  }
  return data;
}
function atcb_decorate_data_meta(data) {
  if (!data.status || data.status === '') {
    data.status = 'CONFIRMED';
  }
  if (!data.sequence || data.sequence === '') {
    data.sequence = 0;
  }
  return data;
}
function atcb_decorate_data_description(data, i) {
  const cleanDescription = (desc) => desc.replace(/(\\r\\n|\\n|\\r|<br(\s*\/?)>)/g, '');
  let description = data.dates[`${i}`].description || data.description || '';
  if (description) {
    description = cleanDescription(description);
    if (data.customVar) {
      for (const key in data.customVar) {
        const sanitizedKey = '%%' + key.replace(/[^\w\-.]/g, '') + '%%';
        // eslint-disable-next-line security/detect-non-literal-regexp
        description = description.replace(new RegExp(sanitizedKey, 'gi'), data.customVar[`${key}`]);
      }
    }
    const descriptionHtmlFree = atcb_rewrite_html_elements(description, true);
    const descriptionHtmlFreeICal = atcb_rewrite_html_elements(description, true, true);
    description = atcb_rewrite_html_elements(description);
    data.dates[`${i}`] = { ...data.dates[`${i}`], description, descriptionHtmlFree, descriptionHtmlFreeICal };
  } else {
    data.dates[`${i}`].descriptionHtmlFree = data.dates[`${i}`].descriptionHtmlFreeICal = data.dates[`${i}`].description = '';
  }
  return data;
}
function atcb_decorate_data_extend(data) {
  for (let i = 0; i < data.dates.length; i++) {
    data = atcb_decorate_data_description(data, i);
    if (!data.dates[`${i}`].name || data.dates[`${i}`].name === '') {
      data.dates[`${i}`].name = data.name;
    }
    if (!data.dates[`${i}`].status) {
      data.dates[`${i}`].status = data.status.toUpperCase();
    } else {
      data.dates[`${i}`].status = data.dates[`${i}`].status.toUpperCase();
    }
    if (!data.dates[`${i}`].sequence) {
      data.dates[`${i}`].sequence = data.sequence;
    }
    if (!data.dates[`${i}`].organizer && data.organizer) {
      data.dates[`${i}`].organizer = data.organizer;
    }
    if (!data.dates[`${i}`].attendee && data.attendee) {
      data.dates[`${i}`].attendee = data.attendee;
    }
    if (!data.dates[`${i}`].availability && data.availability) {
      data.dates[`${i}`].availability = data.availability.toLowerCase();
    } else if (data.dates[`${i}`].availability) {
      data.dates[`${i}`].availability = data.dates[`${i}`].availability.toLowerCase();
    }
    if (!data.dates[`${i}`].location && data.location) {
      data.dates[`${i}`].location = data.location;
    }
    if (data.dates[`${i}`].location && data.dates[`${i}`].location.startsWith('http')) {
      data.dates[`${i}`].onlineEvent = true;
    } else {
      data.dates[`${i}`].onlineEvent = false;
    }
    if (!data.dates[`${i}`].uid) {
      if (i === 0 && data.uid && data.uid !== '') {
        data.dates[0].uid = data.uid;
      } else {
        if (data.uid && data.uid !== '') {
          data.dates[`${i}`].uid = data.uid + '-' + (i + 1);
        } else {
          data.dates[`${i}`].uid = atcb_generate_uuid();
        }
      }
    }
    if (data.customVar) {
      for (const key in data.customVar) {
        const sanitizedKey = '%%' + key.replace(/[^\w\-.]/g, '') + '%%';
        // eslint-disable-next-line security/detect-non-literal-regexp
        data.dates[`${i}`].name = data.dates[`${i}`].name.replace(new RegExp(sanitizedKey, 'gi'), data.customVar[`${key}`]);
        // eslint-disable-next-line security/detect-non-literal-regexp
        data.dates[`${i}`].location = data.dates[`${i}`].location.replace(new RegExp(sanitizedKey, 'gi'), data.customVar[`${key}`]);
      }
    }
  }
  if (data.recurrence && data.recurrence !== '') {
    data.dates[0].recurrence = data.recurrence;
  }
  if (data.dates.length > 1) {
    data.dates.sort((a, b) => a.timestamp - b.timestamp);
  }
  return data;
}
function atcb_date_cleanup(dateTimeData) {
  function isValidDateFormat(dateStr) {
    return /^\d\d\d\d-\d\d-\d\d(?:T\d\d:\d\d)?(?::\d\d)?(?:.\d\d\d)?Z?$/i.test(dateStr);
  }
  function isValidTodayFormat(dateStr) {
    return /^today(?:\+(?:\d|\d\d|\d\d\d|\d\d\d\d))?$/i.test(dateStr);
  }
  if (!dateTimeData.endDate || dateTimeData.endDate === '') {
    dateTimeData.endDate = dateTimeData.startDate;
  }
  const endpoints = ['start', 'end'];
  endpoints.forEach(function (point) {
    const dateStr = dateTimeData[point + 'Date'];
    if (!isValidDateFormat(dateStr) && !isValidTodayFormat(dateStr)) {
      dateTimeData[point + 'Date'] = 'badly-formed';
    } else {
      if (isValidTodayFormat(dateStr)) dateTimeData[point + 'Date'] = atcb_date_calculation(dateStr);
      if (dateTimeData[point + 'Date']) {
        const tmpSplitStartDate = dateTimeData[point + 'Date'].split('T');
        if (tmpSplitStartDate[1]) {
          dateTimeData[point + 'Date'] = tmpSplitStartDate[0];
          dateTimeData[point + 'Time'] = tmpSplitStartDate[1];
        }
      }
      if (dateTimeData[point + 'Time'] && dateTimeData[point + 'Time'].length > 5) {
        dateTimeData[point + 'Time'] = dateTimeData[point + 'Time'].substring(0, 5);
      }
    }
  });
  if (dateTimeData.timeZone === 'currentBrowser' || dateTimeData.useUserTZ) {
    const browserTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone || 'GMT';
    if (dateTimeData.useUserTZ && dateTimeData.startTime && dateTimeData.startTime !== '' && dateTimeData.endTime && dateTimeData.endTime !== '') {
      const newStartDateTime = atcb_translate_via_time_zone(dateTimeData.startDate, dateTimeData.startTime, dateTimeData.timeZone, browserTimezone);
      const newEndDateTime = atcb_translate_via_time_zone(dateTimeData.endDate, dateTimeData.endTime, dateTimeData.timeZone, browserTimezone);
      dateTimeData.startDate = newStartDateTime[0];
      dateTimeData.startTime = newStartDateTime[1];
      dateTimeData.endDate = newEndDateTime[0];
      dateTimeData.endTime = newEndDateTime[1];
    }
    dateTimeData.timeZone = browserTimezone;
  }
  return dateTimeData;
}
function atcb_date_specials_calculation(type, dateString, timeString = null, timeZone) {
  try {
    const tmpDate = (function () {
      if (timeString) {
        const offsetEnd = tzlib_get_offset(timeZone, dateString, timeString);
        return new Date(dateString + ' ' + timeString + ':00 GMT' + offsetEnd);
      }
      return new Date(dateString);
    })();
    if (type === 'timestamp') {
      return tmpDate.getTime();
    }
    if (!timeString) {
      tmpDate.setDate(tmpDate.getDate() + 1);
    }
    const currentUtcDate = new Date().toISOString();
    return tmpDate.getTime() < new Date(currentUtcDate).getTime();
  } catch {
    return false;
  }
}
function atcb_date_calculation(dateString) {
  const today = new Date();
  const todayString = today.getUTCFullYear() + '-' + (today.getUTCMonth() + 1) + '-' + today.getUTCDate();
  dateString = dateString.replace(/today/gi, todayString);
  const dateStringParts = dateString.split('+');
  const dateParts = dateStringParts[0].split('-');
  const newDate = new Date(Date.UTC(dateParts[0], dateParts[1] - 1, dateParts[2].substring(0, 2)));
  if (dateStringParts[1] && dateStringParts[1] > 0) {
    newDate.setDate(newDate.getDate() + parseInt(dateStringParts[1]));
  }
  try {
    return newDate.toISOString().replace(/T(\d{2}:\d{2}:\d{2}\.\d{3})Z/g, '');
  } catch {
    return false;
  }
}
function atcb_decorate_data_button_status_handling(data) {
  if (!data.pastDateHandling || (data.pastDateHandling != 'disable' && data.pastDateHandling != 'hide')) {
    data.pastDateHandling = 'none';
  }
  data.allOverdue = (function () {
    for (let i = 0; i < data.dates.length; i++) {
      if (!data.dates[`${i}`].overdue) {
        return false;
      }
    }
    return true;
  })();
  if (data.allOverdue) {
    if (data.pastDateHandling == 'disable') {
      data.disabled = true;
    } else if (data.pastDateHandling == 'hide') {
      data.hidden = true;
    }
  }
  data.allCancelled = (function () {
    for (let i = 0; i < data.dates.length; i++) {
      if (!data.dates[`${i}`].status || data.dates[`${i}`].status.toLowerCase() !== 'cancelled') {
        return false;
      }
    }
    return true;
  })();
  if (data.disabled || data.hidden) {
    data.blockInteraction = true;
  }
  return data;
}
async function atcb_decorate_data_rsvp(data) {
  if (typeof atcb_check_bookings !== 'function' || !data.rsvp || !data.proKey || Object.keys(data.rsvp).length === 0) return data;
  data.rsvp.expired = (function () {
    if (data.rsvp && data.rsvp.expires && new Date(data.rsvp.expires) < new Date()) {
      return true;
    }
    return false;
  })();
  if (data.rsvp.max) {
    const bookings = await atcb_check_bookings(data.proKey, data.dev);
    data.rsvp.seatsLeft = data.rsvp.max - bookings;
    if (data.rsvp.seatsLeft < 1) {
      data.rsvp.bookedOut = true;
    }
    if (data.rsvp.expired || data.rsvp.bookedOut) {
      data.blockInteraction = true;
    }
    if (data.blockInteraction) {
      data.disabled = true;
    }
  }
  return data;
}


async function atcb_check_required(data) {
  if (!data.name || data.name === '') {
    throw new Error('Add to Calendar Button generation failed: required name information missing');
  }
  if (data.dates != null && data.dates.length > 0) {
    if (data.subscribe === true && data.dates.length > 1) {
      throw new Error('Add to Calendar Button generation failed: a subscription calendar cannot be a multi-date setup');
    }
    const requiredMultiField = ['name', 'startDate'];
    const requiredMultiFieldFlex = ['name'];
    return requiredMultiField.every(function (field) {
      for (let i = 0; i < data.dates.length; i++) {
        if (
          (!requiredMultiFieldFlex.includes(`${field}`) && (!data.dates[`${i}`][`${field}`] || data.dates[`${i}`][`${field}`] === '')) ||
          (requiredMultiFieldFlex.includes(`${field}`) && (!data.dates[`${i}`][`${field}`] || data.dates[`${i}`][`${field}`] === '') && (!data[`${field}`] || data[`${field}`] === ''))
        ) {
          if (!data.subscribe || field !== 'startDate') {
            throw new Error('Add to Calendar Button generation failed: required setting missing [dates array object #' + (i + 1) + '/' + data.dates.length + '] => [' + field + ']');
          } else {
            data.dates[`${i}`].startDate = 'today';
          }
        }
      }
      return true;
    });
  } else {
    const requiredSingleField = ['startDate'];
    return requiredSingleField.every(function (field) {
      if (!data[`${field}`] || data[`${field}`] === '') {
        if (!data.subscribe || field !== 'startDate') {
          throw new Error('Add to Calendar Button generation failed: required setting missing [' + field + ']');
        } else {
          data.startDate = 'today';
        }
      }
      return true;
    });
  }
}
async function atcb_validate(data) {
  const msgPrefix = 'Add to Calendar Button generation (' + data.identifier + ')';
  try {
    await atcb_validate_icsFile(data, msgPrefix);
    await atcb_validate_buttonStyle(data, msgPrefix);
    await atcb_validate_subscribe(data, msgPrefix);
    await atcb_validate_created(data, msgPrefix);
    await atcb_validate_updated(data, msgPrefix);
    await atcb_validate_options(data, msgPrefix);
    await atcb_validate_date_blocks(data, msgPrefix);
    await atcb_validate_rrule(data, msgPrefix);
    if (data.recurrence_simplyfied) {
      await atcb_validate_rrule_simplyfied(data, msgPrefix);
    }
    return true;
  } catch (e) {
    throw new Error(e.message);
  }
}
async function atcb_validate_icsFile(data, msgPrefix, i = '', msgSuffix = '') {
  const icsFileStr = (function () {
    if (i !== '' && data.dates[`${i}`].icsFile) {
      return data.dates[`${i}`].icsFile;
    }
    if (i === '' && data.icsFile) {
      return data.icsFile;
    }
    return '';
  })();
  if (icsFileStr !== '') {
    if (!atcb_secure_url(icsFileStr, false) || (!data.icsFile.startsWith('https://') && !data.icsFile.startsWith('http://'))) {
      throw new Error(msgPrefix + ' failed: explicit ics file path not valid' + msgSuffix);
    }
  }
  return true;
}
async function atcb_validate_buttonStyle(data, msgPrefix) {
  const availableStyles = ['default', '3d', 'flat', 'round', 'neumorphism', 'text', 'date', 'custom', 'none'];
  if (!availableStyles.includes(data.buttonStyle)) {
    throw new Error(msgPrefix + ' failed: provided buttonStyle invalid');
  }
  if (data.customCss && data.customCss !== '' && (!atcb_secure_url(data.customCss, false) || !/\.css(?:$|\?)/.test(data.customCss))) {
    throw new Error(msgPrefix + ' failed: customCss provided, but no valid url');
  }
  if ((!data.customCss || data.customCss === '') && data.buttonStyle === 'custom') {
    throw new Error(msgPrefix + ' failed: buttonStyle "custom" selected, but no customCss file provided');
  }
  if (data.rsvp && (data.buttonStyle === 'date' || data.buttonStyle === 'none')) {
    throw new Error(msgPrefix + ' failed: buttonStyle ' + data.buttonStyle + ' is not compatible with the RSVP functionality');
  }
  return true;
}
async function atcb_validate_subscribe(data, msgPrefix) {
  if (data.subscribe === true && (!data.icsFile || data.icsFile === '')) {
    throw new Error(msgPrefix + ' failed: a subscription calendar requires a valid explicit ics file as well');
  }
  return true;
}
async function atcb_validate_created(data, msgPrefix) {
  if (!/^\d{8}T\d{6}Z$/.test(data.created)) {
    throw new Error(msgPrefix + ' failed: created date format not valid. Needs to be a full ISO-8601 UTC date and time string, formatted YYYYMMDDTHHMMSSZ');
  }
  return true;
}
async function atcb_validate_updated(data, msgPrefix) {
  if (!/^\d{8}T\d{6}Z$/.test(data.updated)) {
    throw new Error(msgPrefix + ' failed: updated date format not valid. Needs to be a full ISO-8601 UTC date and time string, formatted YYYYMMDDTHHMMSSZ');
  }
  return true;
}
async function atcb_validate_options(data, msgPrefix) {
  const isValid = data.options.every((option) => {
    if (!atcbOptions.includes(option)) {
      throw new Error(`${msgPrefix} failed: invalid option [${option}]`);
    }
    return true;
  });
  return isValid;
}
async function atcb_validate_date_blocks(data, msgPrefix) {
  try {
    for (let i = 0; i < data.dates.length; i++) {
      const msgSuffix = (function () {
        if (data.dates.length === 1) {
          return '';
        } else {
          return ' [dates array object #' + (i + 1) + '/' + data.