<?php

/*
 * This file is part of the Fxp Composer Asset Plugin package.
 *
 * (c) François Pluchino <francois.pluchino@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Fxp\Composer\AssetPlugin\Converter;

/**
 * Utils for NPM package converter.
 *
 * @author François Pluchino <francois.pluchino@gmail.com>
 */
abstract class NpmPackageUtil
{
    /**
     * Convert the author section.
     *
     * @param string|null $value The current value
     *
     * @return array
     */
    public static function convertAuthor($value)
    {
        if (null !== $value) {
            $value = array($value);
        }

        return $value;
    }

    /**
     * Convert the contributors section.
     *
     * @param string|null $value     The current value
     * @param string|null $prevValue The previous value
     *
     * @return array
     */
    public static function convertContributors($value, $prevValue)
    {
        $mergeValue = is_array($prevValue) ? $prevValue : array();
        $mergeValue = array_merge($mergeValue, is_array($value) ? $value : array());

        if (count($mergeValue) > 0) {
            $value = $mergeValue;
        }

        return $value;
    }

    /**
     * Convert the dist section.
     *
     * @param string|null $value The current value
     *
     * @return array
     */
    public static function convertDist($value)
    {
        if (is_array($value)) {
            $data = (array) $value;
            $value = array();

            foreach ($data as $type => $url) {
                if ('shasum' === $type) {
                    $value[$type] = $url;
                } else {
                    $value['type'] = 'tarball' === $type ? 'tar' : $type;
                    $value['url'] = $url;
                }
            }
        }

        return $value;
    }
}