<?php

namespace Taxus;

class Taxus
{
    protected PermissionGrantInterface $gate;

    public function __construct(PermissionGrantInterface $gate)
    {
        $this->gate = $gate;
    }

    /**
     * @var array
     */
    protected $list;

    public function add(...$privileges) : self
    {
        foreach($privileges as $item) {
            $item = (array) $item;

            if ( ! $item[0] instanceof Privilege ) {
                throw new \InvalidArgumentException("First element must be an instance of '" . Privilege::class . "'");
            }

            if ( ( $item[1] ?? false ) && ! is_string($item[1]) ) {
                throw new \InvalidArgumentException("Second element must be a callable function from your Permission Handler");
            }

            $this->list[ $item[0]->name ] = $item;
        }

        return $this;
    }

    public function granted($name, ...$arguments) : bool
    {
        if ( ! isset($this->list[$name]) ) {
            throw new \InvalidArgumentException("Privilege '{$name}' could not be found. Did you forgot to add it to your Taxus object ?");
        }

        $obj = $this->list[$name][0];

        $callback = $this->list[$name][1] ?? 'default';

        return $this->gate->$callback(...$arguments);
    }
}