<?php namespace Komma\KMS\Core\Sections\Tabs;

use Komma\KMS\Core\Attributes\Attribute;
use Illuminate\Support\Collection;
use Illuminate\Support\MessageBag;

/**
 * Class SectionTab
 *
 * Represents one of the tabs off a section.
 *
 * @package App\Kms\Core\Sections
 */
class SectionTab implements SectionTabInterface
{
    /** @var string */
    private $name;

    /** @var Collection */
    private $items;

    /** @var bool $isLanguageTab */
    private $isLanguageTab;

    /**
     * SectionTab constructor.
     * @param string $name
     */
    public function __construct(string $name)
    {
        $this->name = $name;
        $this->items = new Collection();
        $this->isLanguageTab = false;
    }

    /**
     * @return string
     */
    public function getName(): string
    {
        return $this->name;
    }

    /**
     * @return Collection of SectionTabItems
     */
    public function getItems(): Collection
    {
        return $this->items;
    }

    /**
     * @return SectionTabInterface
     */
    public function clearItems(): SectionTabInterface {
        $this->items = new Collection();
        return $this;
    }

    /**
     * @param $item
     * @return SectionTabInterface
     */
    public function addItem($item):SectionTabInterface
    {
        $this->items->push($item);
        return $this;
    }

    /**
     * @param Collection $items
     * @return SectionTabInterface
     */
    public function setItems(Collection $items): SectionTabInterface
    {
        $this->items = $items;
        return $this;
    }

    /**
     * @return bool
     */
    public function isLanguageTab(): bool
    {
        return $this->isLanguageTab;
    }

    /**
     * @param bool $isLanguageTab
     * @return SectionTab
     */
    public function setIsLanguageTab(bool $isLanguageTab): SectionTab
    {
        $this->isLanguageTab = $isLanguageTab;
        return $this;
    }

    /**
     * For determining if the tab has an error or not.
     *
     * @param MessageBag $messageBag
     * @return bool
     */
    public function hasErrors(MessageBag $messageBag): bool
    {
        $hasErrors = false;
        $this->items->each(function($item) use(&$hasErrors, $messageBag) {
           if(is_a($item, Attribute::class)) {
               /** @var Attribute $item */
                if($messageBag->has((string) $item->getKey())) {
                    $hasErrors = true;
                }
           }
        });
        return $hasErrors;
    }
}