gistfile1.txt

<?php

function arr($config): callable {
    return static function ($value) use ($config) {
        return map(static function($f) use ($value) {
            return $f($value);
        }, $config);
    };
}

$fn = converge(
    merge(),
    [
        arr([
            'contact' => arr([
                'id' => prop('contact_id'),
                'name' => prop('contact_name'),
            ]),
            'unloadingPoint' => ifElse(
                compose(isEmpty(), prop('unloading_point_code')),
                null,
                arr([
                    'id' => prop('unloading_point_code'),
                    'value' => prop('unloading_point_description'),
                ]),
            ),
            'creationDate' => converge(
                join(' '),
                [
                    pipe(prop('creation_date_date'), take(10)),
                    pipe(prop('creation_date_time'), drop(11), take(8)),
                ]
            ),
        ]),
        omit([
            'contact_id', 'contact_name',
            'unloading_point_code', 'unloading_point_description',
            'creation_date_date', 'creation_date_time',
        ]),
    ]
);