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import * as logger from "https://deno.land/std@0.139.0/log/mod.ts";import dayjs from "https://cdn.skypack.dev/dayjs@1.11.2";import isBetween from "https://cdn.skypack.dev/dayjs@1.11.2/plugin/isBetween.js";import customParseFormat from "https://cdn.skypack.dev/dayjs@1.11.2/plugin/customParseFormat.js";
dayjs.extend(customParseFormat);dayjs.extend(isBetween);
interface StopTimes {  start: string;  end: string;}export interface Options {  interval?: number;  logging?: boolean;  stopTimes?: StopTimes;}
function isStopTime(stopTimes: StopTimes): boolean {  const { start, end } = stopTimes;  const format = 'HH:mm';
  if (!start || !end) {    logger.warning('Both a start/end stop time must be defined.');    return true;  }
  const current = dayjs();  const startTime = dayjs(start, format);  const endTime = dayjs(end, format);
  return current.isBetween(startTime, endTime);};
/** * Ping the URL of an Heroku application periodically * @param {string} url - Heroku application url * @param {Options} options - options object. */export function wakeDyno(url: string, options: Options = {}) {  const { interval = 29, logging = true, stopTimes } = options;  const milliseconds = interval * 60000;
  setTimeout(() => {    if (stopTimes && isStopTime(stopTimes)) {      wakeDyno(url, options);    } else {      fetch(url)        .then(() => logging && logger.info('Successfully woke the dyno'))        .catch((error: Error) => logging && logger.error(`Attempting to wake the dyno : ${error.message}`))        .finally(() => wakeDyno(url, options));    }  }, milliseconds);}
/** * Ping multiple Heroku application URLs periodically * @param {string[]} urls - Heroku application urls * @param {Options} options - options object. */export function wakeDynos(urls: string[], options: Options) {  const { interval = 29, logging = true, stopTimes } = options;  const milliseconds = interval * 60000;
  setTimeout(() => {    if (stopTimes && isStopTime(stopTimes)) {      wakeDynos(urls, options);    } else {      const promises = urls.map((url) => fetch(url));      Promise.all(promises)        .then(() => logging && logger.info('Successfully woke all dynos'))        .catch((error: Error) => logging && logger.error(`Attempting to wake the dyno : ${error.message}`))        .finally(() => wakeDynos(urls, options));    }  }, milliseconds);};