<?php
/**
 * @see       https://github.com/zendframework/zend-hydrator for the canonical source repository
 * @copyright Copyright (c) 2010-2018 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   https://github.com/zendframework/zend-hydrator/blob/master/LICENSE.md New BSD License
 */

declare(strict_types=1);

namespace Zend\Hydrator\NamingStrategy;

use function array_map;

final class CompositeNamingStrategy implements NamingStrategyInterface
{
    /**
     * @var NamingStrategyInterface[]
     */
    private $namingStrategies = [];

    /**
     * @var NamingStrategyInterface
     */
    private $defaultNamingStrategy;

    /**
     * @param NamingStrategyInterface[]    $strategies            indexed by the name they translate
     */
    public function __construct(array $strategies, ?NamingStrategyInterface $defaultNamingStrategy = null)
    {
        $this->namingStrategies = array_map(
            function (NamingStrategyInterface $strategy) {
                // this callback is here only to ensure type-safety
                return $strategy;
            },
            $strategies
        );

        $this->defaultNamingStrategy = $defaultNamingStrategy ?: new IdentityNamingStrategy();
    }

    /**
     * {@inheritDoc}
     */
    public function extract(string $name, ?object $object = null) : string
    {
        $strategy = $this->namingStrategies[$name] ?? $this->defaultNamingStrategy;
        return $strategy->extract($name);
    }

    /**
     * {@inheritDoc}
     */
    public function hydrate(string $name, ?array $data = null) : string
    {
        $strategy = $this->namingStrategies[$name] ?? $this->defaultNamingStrategy;
        return $strategy->hydrate($name);
    }
}