Forked from sergiodxa/human-readable-duration-format.js
Created
March 21, 2019 13:30
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Human readable duration format
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const messages = { | |
year: { singular: 'year', plural: 'years', denominator: 365, inSeconds: 31536000 }, | |
day: { singular: 'day', plural: 'days', denominator: 24, inSeconds: 86400 }, | |
hour: { singular: 'hour', plural: 'hours', denominator: 60, inSeconds: 3600 }, | |
minute: { singular: 'minute', plural: 'minutes', denominator: 60, inSeconds: 60 }, | |
second: { singular: 'second', plural: 'seconds', inSeconds: 1 } | |
} | |
function pluralize(value, unit) { | |
if (value === 1) return messages[unit].singular; | |
return messages[unit].plural; | |
} | |
function isFloat(value) { | |
return value % 1 !== 0; | |
} | |
function format(value, unit) { | |
return `${parseInt(value, 10)} ${pluralize(parseInt(value, 10), unit)}` | |
} | |
function remainings(seconds, value, unit) { | |
return isFloat(value) | |
? (seconds - parseInt(value, 10) * messages[unit].inSeconds) | |
: 0 | |
} | |
function getTimeFromSeconds(seconds, unit) { | |
const quantity = seconds / messages[unit].inSeconds; | |
const remaining = remainings(seconds, quantity, unit) | |
return { quantity: parseInt(quantity), remaining }; | |
} | |
function formatDuration(_seconds) { | |
if (_seconds === 0) return 'now'; | |
if (_seconds === 1) return `1 ${messages.second.singular}`; | |
if (_seconds < 60) return `${seconds} ${messages.second.plural}`; | |
const message = []; | |
let year = getTimeFromSeconds(_seconds, 'year') | |
let day = getTimeFromSeconds(year.remaining, 'day') | |
let hours = getTimeFromSeconds(day.remaining, 'hour') | |
let minutes = getTimeFromSeconds(hours.remaining, 'minute') | |
let seconds = minutes.remaining | |
if (year.quantity > 0) { | |
message.push(format(year.quantity, 'year')); | |
} | |
if (day.quantity > 0) { | |
message.push(format(day.quantity, 'day')); | |
} | |
if (hours.quantity > 0) { | |
message.push(format(hours.quantity, 'hour')); | |
} | |
if (minutes.quantity > 0) { | |
message.push(format(minutes.quantity, 'minute')); | |
} | |
if (seconds > 0) { | |
message.push(format(seconds, 'second')); | |
} | |
return message.length > 2 | |
? message.slice(0, message.length - 1).join(', ') + " and " + message[message.length - 1] | |
: message.join(' and '); | |
} |
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