<?php

namespace bff\extend;

use Component;

/**
 * Hook instance
 * @copyright Tamaranga
 */
class Hook extends Component
{
    protected $callback = null;

    protected $scoped = false;

    public function __construct($callback = null, $scoped = false)
    {
        if (is_callable($callback)) {
            $this->setCallback($callback);
        }

        $this->setScoped($scoped);
    }

    /**
     * Set callback
     * @param callable $callback
     * @return void
     */
    public function setCallback(callable $callback)
    {
        $this->callback = $callback;
    }

    /**
     * Mark hook as scoped
     * @param bool $scoped
     */
    public function setScoped($scoped)
    {
        $this->scoped = $scoped;
    }

    /**
     * Is scoped hook
     * @return bool
     */
    public function isScoped()
    {
        return $this->scoped;
    }

    public function __invoke()
    {
        $args = func_get_args();
        if (! is_null($this->callback)) {
            return call_user_func_array($this->callback, $args);
        }
        return ($args[0] ?? '');
    }
}