class FormatDate

class FormatDate extends ProcessPluginBase {
    
    /**
     * {@inheritdoc}
     */
    public function transform($value, MigrateExecutableInterface $migrate_executable, Row $row, $destination_property) {
        if (empty($value) && $value !== '0' && $value !== 0) {
            return '';
        }
        // Validate the configuration.
        if (empty($this->configuration['from_format'])) {
            throw new MigrateException('Format date plugin is missing from_format configuration.');
        }
        if (empty($this->configuration['to_format'])) {
            throw new MigrateException('Format date plugin is missing to_format configuration.');
        }
        $fromFormat = $this->configuration['from_format'];
        $toFormat = $this->configuration['to_format'];
        if (isset($this->configuration['timezone'])) {
            @trigger_error('Configuration key "timezone" is deprecated in 8.4.x and will be removed before Drupal 9.0.0, use "from_timezone" and "to_timezone" instead. See https://www.drupal.org/node/2885746', E_USER_DEPRECATED);
            $from_timezone = $this->configuration['timezone'];
            $to_timezone = isset($this->configuration['to_timezone']) ? $this->configuration['to_timezone'] : NULL;
        }
        else {
            $system_timezone = date_default_timezone_get();
            $default_timezone = !empty($system_timezone) ? $system_timezone : 'UTC';
            $from_timezone = isset($this->configuration['from_timezone']) ? $this->configuration['from_timezone'] : $default_timezone;
            $to_timezone = isset($this->configuration['to_timezone']) ? $this->configuration['to_timezone'] : $default_timezone;
        }
        $settings = isset($this->configuration['settings']) ? $this->configuration['settings'] : [];
        // Older versions of Drupal where omitting certain granularities (also known
        // as "collected date attributes") resulted in invalid timestamps getting
        // stored.
        if ($fromFormat === 'Y-m-d\\TH:i:s') {
            $value = str_replace([
                '-00-00T',
                '-00T',
            ], [
                '-01-01T',
                '-01T',
            ], $value);
        }
        // Attempts to transform the supplied date using the defined input format.
        // DateTimePlus::createFromFormat can throw exceptions, so we need to
        // explicitly check for problems.
        try {
            $transformed = DateTimePlus::createFromFormat($fromFormat, $value, $from_timezone, $settings)->format($toFormat, [
                'timezone' => $to_timezone,
            ]);
        } catch (\InvalidArgumentException $e) {
            throw new MigrateException(sprintf("Format date plugin could not transform '%s' using the format '%s' for destination '%s'. Error: %s", $value, $fromFormat, $destination_property, $e->getMessage()), $e->getCode(), $e);
        } catch (\UnexpectedValueException $e) {
            throw new MigrateException(sprintf("Format date plugin could not transform '%s' using the format '%s' for destination '%s'. Error: %s", $value, $fromFormat, $destination_property, $e->getMessage()), $e->getCode(), $e);
        }
        return $transformed;
    }

}