117 lines
3.3 KiB
JavaScript
117 lines
3.3 KiB
JavaScript
/*
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* Copyright (C) Noverant, Inc - All Rights Reserved Unauthorized copying of this file, via any
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* medium is strictly prohibited Proprietary and confidential
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*/
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// @flow
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export const SECONDS_PER_SECOND = 1;
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export const SECONDS_PER_MINUTE = 60;
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export const SECONDS_PER_HOUR = 60 * SECONDS_PER_MINUTE;
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export const SECONDS_PER_DAY = 24 * SECONDS_PER_HOUR;
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const designations = [
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['D', SECONDS_PER_DAY],
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['H', SECONDS_PER_HOUR],
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['M', SECONDS_PER_MINUTE],
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['S', SECONDS_PER_SECOND],
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];
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/**
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* Converts a Number to a String of HH:MM:SS
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*
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* @param totalSeconds
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* @returns {string}
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*/
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export function getSecondsAsHHMMSS(totalSeconds: Number) {
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// SCORM spec does not deal with negative durations, give zero back
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if(!totalSeconds || totalSeconds <= 0) {
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return '00:00:00';
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}
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let hours = Math.floor(totalSeconds / SECONDS_PER_HOUR);
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let dateObj = new Date(totalSeconds * 1000);
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let minutes = dateObj.getUTCMinutes();
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let seconds = dateObj.getSeconds();
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return hours.toString().padStart(2, '0') + ':' +
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minutes.toString().padStart(2, '0') + ':' +
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seconds.toString().padStart(2, '0');
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}
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/**
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* Calculate the number of seconds from ISO 8601 Duration
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*
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* @param seconds
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* @returns {String}
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*/
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export function getSecondsAsISODuration(seconds: Number) {
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// SCORM spec does not deal with negative durations, give zero back
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if(!seconds || seconds <= 0) {
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return 'P0S';
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}
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let duration = 'P';
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let remainder = seconds;
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designations.forEach(([sign, current_seconds]) => {
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const value = Math.floor(remainder / current_seconds);
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remainder = remainder % current_seconds;
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if (value) {
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duration += `${value}${sign}`;
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}
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});
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return duration;
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}
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/**
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* Calculate the number of seconds from HH:MM:SS.DDDDDD
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*
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* @param timeString
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* @param timeRegex
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* @returns {number}
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*/
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export function getTimeAsSeconds(timeString: String, timeRegex: RegExp) {
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if(!timeString || typeof timeString !== 'string' || !timeString.match(timeRegex)) {
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return 0;
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}
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const parts = timeString.split(':');
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const hours = Number(parts[0]);
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const minutes = Number(parts[1]);
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const seconds = Number(parts[2]);
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return (hours * 3600) + (minutes * 60) + seconds;
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}
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/**
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* Calculate the number of seconds from ISO 8601 Duration
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*
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* @param duration
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* @param durationRegex
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* @returns {number}
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*/
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export function getDurationAsSeconds(duration: String, durationRegex: RegExp) {
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if(!duration || !duration.match(durationRegex)) {
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return 0;
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}
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let [,years,months,,days,hours,minutes,seconds] = new RegExp(durationRegex).exec(duration) || [];
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let now = new Date();
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let anchor = new Date(now);
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anchor.setFullYear(anchor.getFullYear() + Number(years || 0));
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anchor.setMonth(anchor.getMonth() + Number(months || 0));
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anchor.setDate(anchor.getDate() + Number(days || 0));
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anchor.setHours(anchor.getHours() + Number(hours || 0));
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anchor.setMinutes(anchor.getMinutes() + Number(minutes || 0));
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anchor.setSeconds(anchor.getSeconds() + Number(seconds || 0));
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if(seconds) {
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let milliseconds = Number(Number(seconds) % 1).toFixed(6) * 1000.0;
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anchor.setMilliseconds(anchor.getMilliseconds() + milliseconds);
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}
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return (anchor - now) / 1000.0;
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}
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