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<?php

namespace SAREhub\Commons\Misc;

/**
 * Factory with registry of available creators
 */
class GenericFactory
{

    /** @var array */
    private $creators = [];

    /**
     * @param string $creatorName
     * @param mixed $data
     * @return mixed
     * @throws \Exception
     */
    public function create($creatorName, $data = null)
    {
        if ($creator = $this->getCreator($creatorName)) {
            return $creator($data);
        }

        throw new \Exception("creator with name '" . $creatorName . "' not registered");
    }

    /**
     * @param string $name
     * @return bool
     */
    public function hasCreator($name)
    {
        return isset($this->creators[$name]);
    }

    /**
     * @param string $name
     * @return callable|null
     */
    public function getCreator($name)
    {
        return $this->hasCreator($name) ? $this->creators[$name] : null;
    }

    /**
     * @param string $name
     * @param callable $creator
     * @return self
     */
    public function registerCreator($name, callable $creator)
    {
        $this->creators[$name] = $creator;
        return $this;
    }

    /**
     * @param array $creators
     * @return self
     */
    public function registerCreators(array $creators)
    {
        foreach ($creators as $name => $creator) {
            $this->registerCreator($name, $creator);
        }

        return $this;
    }


}