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import { sprintf, __ } from '@wordpress/i18n';
import { useEffect, useMemo, useState } from 'react';
import { useLocale } from '../../app/locale';
import { formatDate } from '../../utils/datetime';
function useRelativeTime( date: Date, locale: string, formatOptions?: Intl.DateTimeFormatOptions ) {
const [ now, setNow ] = useState( () => new Date() );
useEffect( () => {
const intervalId = setInterval( () => setNow( new Date() ), 10000 );
return () => clearInterval( intervalId );
}, [] );
return useMemo( () => {
const millisAgo = now.getTime() - date.getTime();
// Handle invalid or future dates
if ( isNaN( date.getTime() ) || millisAgo < 0 ) {
return formatDate( date, locale, formatOptions );
}
const secondsAgo = Math.floor( millisAgo / 1000 );
const minutesAgo = Math.floor( secondsAgo / 60 );
const hoursAgo = Math.floor( minutesAgo / 60 );
const daysAgo = Math.floor( hoursAgo / 24 );
// Just now
if ( secondsAgo < 60 ) {
return __( 'just now' );
}
// Minutes ago (less than 60 minutes)
if ( minutesAgo < 60 ) {
return sprintf(
/* translators: %s is the number of minutes. Example for a resulting string: 2m ago */
__( '%(minutes)dm ago' ),
{
minutes: minutesAgo,
}
);
}
// Hours ago (less than 24 hours)
if ( hoursAgo < 24 ) {
return sprintf(
/* translators: %s is the number of hours. Example for a resulting string: 5h ago */
__( '%(hours)dh ago' ),
{
hours: hoursAgo,
}
);
}
// Days ago (less than 7 days)
if ( daysAgo < 7 ) {
return sprintf(
/* translators: %s is the number of days. Example for a resulting string: 4d ago */
__( '%(days)dd ago' ),
{
days: daysAgo,
}
);
}
// For older dates, use the date format
return formatDate( date, locale, formatOptions );
}, [ now, date, locale, formatOptions ] );
}
export function useTimeSince( timestamp: string, formatOptions?: Intl.DateTimeFormatOptions ) {
const locale = useLocale();
const date = new Date( timestamp );
return useRelativeTime( date, locale, formatOptions );
}
export default function TimeSince( {
timestamp,
dateStyle,
timeStyle,
}: {
timestamp: string;
dateStyle?: 'full' | 'long' | 'medium' | 'short';
timeStyle?: 'full' | 'long' | 'medium' | 'short';
} ) {
const locale = useLocale();
const date = new Date( timestamp );
const formatOptions = dateStyle || timeStyle ? { dateStyle, timeStyle } : undefined;
const fullDate = formatDate( date, locale, formatOptions );
const relativeDate = useRelativeTime( date, locale, formatOptions );
return (
<time dateTime={ timestamp } title={ fullDate }>
{ relativeDate }
</time>
);
}
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