date-time-formatter.php

<?php

use Brick\DateTime\LocalDate;
use Brick\DateTime\LocalTime;
use Brick\DateTime\LocalDateTime;

/**
 * Formatter for date-time classes.
 */
class DateTimeFormatter
{
    /**
     * @param LocalDate $date
     * @param string    $locale
     *
     * @return string
     */
    public function formatLocalDate(LocalDate $date, string $locale) : string
    {
        $formatter = new \IntlDateFormatter($locale, \IntlDateFormatter::SHORT, \IntlDateFormatter::NONE);
        $formatter->setTimeZone('UTC');

        $datetime = new \DateTime(null, new \DateTimeZone('UTC'));
        $datetime->setDate($date->getYear(), $date->getMonth(), $date->getDay());

        return $formatter->format($datetime);
    }

    /**
     * @todo only supports HH:MM right now. Automatically switch between HH:MM & HH:MM:SS depending on SS==00?
     * @todo same for nanos?
     *
     * @param LocalTime $time
     * @param string    $locale
     *
     * @return string
     */
    public function formatLocalTime(LocalTime $time, string $locale) : string
    {
        $formatter = new \IntlDateFormatter($locale, \IntlDateFormatter::NONE, \IntlDateFormatter::SHORT);
        $formatter->setTimeZone('UTC');

        $datetime = new \DateTime(null, new \DateTimeZone('UTC'));
        $datetime->setTime($time->getHour(), $time->getMinute(), $time->getSecond());

        return $formatter->format($datetime);
    }

    /**
     * @param LocalDateTime $dateTime
     * @param string        $locale
     *
     * @return string
     */
    public function formatLocalDateTime(LocalDateTime $dateTime, string $locale) : string
    {
        $formatter = new \IntlDateFormatter($locale, \IntlDateFormatter::SHORT, \IntlDateFormatter::SHORT);
        $formatter->setTimeZone('UTC');

        $datetime = new \DateTime((string) $dateTime, new \DateTimeZone('UTC'));

        return $formatter->format($datetime);
    }
}