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94 lines
2.5 KiB
94 lines
2.5 KiB
'use strict';
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const YEAR = 31536000000
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, MONTH = 2629800000
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, WEEK = 604800000
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, DAY = 86400000
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, HOUR = 3600000
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, MINUTE = 60000
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, SECOND = 1000;
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module.exports = {
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YEAR, MONTH, WEEK, DAY, HOUR, MINUTE, SECOND,
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//ms until next hour
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'nextHour': () => {
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return 3600000 - new Date().getTime() % 3600000;
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},
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//string representing how long since date A to date B
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'relativeString': (now, relativeTo) => {
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let difference = now.getTime() - relativeTo.getTime();
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let amount = 0;
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let ret = '';
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let isFuture = false;
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if (difference < 0) {
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difference = Math.abs(difference);
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isFuture = true;
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}
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if (difference < MINUTE) {
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return 'Now';
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} else if (difference < MINUTE*59.5) {
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amount = Math.round(difference / MINUTE);
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ret += `${amount} minute`;
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} else if (difference < HOUR*23.5) {
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amount = Math.round(difference / HOUR);
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ret += `${amount} hour`;
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} else if (difference < DAY*6.5) {
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amount = Math.round(difference / DAY);
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ret += `${amount} day`;
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} else if (difference < WEEK*3.5) {
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amount = Math.round(difference / WEEK);
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ret += `${amount} week`;
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} else if (difference < MONTH*11.5) {
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amount = Math.round(difference / MONTH);
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ret += `${amount} month`;
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} else {
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amount = Math.round(difference / YEAR);
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ret = `${amount} year`;
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}
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return `${ret}${amount > 1 ? 's' : ''} ${isFuture ? 'from now' : 'ago'}`;
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},
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'relativeColor': (now, relativeTo) => {
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const difference = now.getTime() - relativeTo.getTime();
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const minutesAgo = Math.floor(difference / MINUTE);
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let r = 0
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, g = 0
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, b = 0;
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if (difference < MINUTE) {
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g = 0.7;
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b = 1;
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} else if (difference < HOUR) {
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r = (minutesAgo / 60) * 0.5;
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g = 1;
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} else if (difference < DAY) {
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r = 0.5 + (minutesAgo / 1440) * 0.5;
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g = 1;
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} else if (difference < WEEK) {
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g = 1 - (minutesAgo / 10080) * 0.5;
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r = 1;
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} else if (difference < MONTH) {
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g = 0.5 - (minutesAgo / 43830) * 0.5;
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r = 1;
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} else if (difference < YEAR) {
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r = 1 - (minutesAgo / 525960);
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} //else, leave it black for >1 year
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r = (Math.round(r*255*0.85).toString(16)).padStart(2, '0');
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g = (Math.round(g*255*0.85).toString(16)).padStart(2, '0');
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b = (Math.round(b*255).toString(16)).padStart(2, '0');
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return `#${r}${g}${b}`;
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},
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'durationString': (ms) => {
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const durString = new Date(ms).toISOString();
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if (ms < DAY) {
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return durString.substr(11,8).replace(/^00:/, '');
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} else {
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const hours = Math.floor(ms/HOUR);
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return `${hours}:${durString.substring(14,19)}`;
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}
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}
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};
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