<?php declare(strict_types=1);


namespace Komma\KMS\Menu;

/**
 * Class Item
 *
 * Represents a menu item
 *
 * @package Komma\KMS\Menu
 */
class Item
{
    /** @var string $name */
    protected $name = '';

    /** @var bool */
    protected $isSeparator = false;

    /** @var bool */
    protected $isActive = false;

    /** @var Item */
    protected $parent;

    /** @var Item[] */
    protected $subItems = [];

    /** @var string */
    protected $url = '#';

    protected $sortOrder = -1;

    /**
     * @var string[]
     */
    private $slugs = [];

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

    /**
     * @param string $name
     * @return Item
     */
    public function setName(string $name): Item
    {
        $this->name = $name;
        return $this;
    }

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

    /**
     * @param bool $isSeparator
     * @return Item
     */
    public function setIsSeparator(bool $isSeparator): Item
    {
        $this->isSeparator = $isSeparator;
        return $this;
    }

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

    /**
     * @param bool $isActive
     * @return Item
     */
    public function setIsActive(bool $isActive): Item
    {
        $this->isActive = $isActive;
        return $this;
    }

    /**
     * @return Item[]
     */
    public function getSubItems(): array
    {
        return $this->subItems;
    }

    /**
     * @param Item[] $subItems
     * @return Item
     */
    public function setSubItems(array $subItems): Item
    {
        $this->subItems = [];
        foreach($subItems as $subItem) $this->addSubItem($subItem, $this);
        return $this;
    }

    /**
     * @param Item $subItem
     * @return $this
     */
    public function addSubItem(Item $subItem)
    {
        $subItem->parent = $this;
        $this->subItems[] = $subItem;
        return $this;
    }

    public function hasSubItems(): bool
    {
        return count($this->subItems) > 0;
    }

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

    /**
     * @param string $url
     * @return Item
     */
    public function setUrl(string $url): Item
    {
        $this->url = $url;
        return $this;
    }

    /**
     * @param string $string
     * @return Item
     */
    public function setSlug(string $string)
    {
        $this->slugs = [$string];
        return $this;
    }

    /**
     * @param array $slugs
     * @return Item
     */
    public function setSlugs(array $slugs)
    {
        foreach($slugs as $slug) $this->addSlug($slug);
        return $this;
    }

    /**
     * @param string $slug
     */
    public function addSlug(string $slug)
    {
        $this->slugs[] = $slug;
    }

    /**
     * @return string[]
     */
    public function getSlugs(): array
    {
        return $this->slugs;
    }

    /**
     * @return string
     */
    public function getSlug(): string
    {
        if(count($this->slugs) == 0) return '';
        else return $this->slugs[0];
    }

    /**
     * @return bool
     */
    public function hasSlugs(): bool
    {
        return (count($this->slugs) != 0);
    }

    /**
     * @return bool
     */
    public function hasActiveSubItems(): bool
    {
        foreach($this->subItems as $subItem) {
            if($subItem->isActive()) return true;
        }
        return false;
    }

    /**
     * @param Item $item
     */
    private function checkIfItemHasActiveSubItems(Item $item)
    {
        if(!$this->hasSubItems()) return; 
        
        foreach($this->subItems as $subItem) {
            if($subItem->isActive()) return true;
            if($subItem->hasSubItems() && $this->checkIfItemHasActiveSubItems($subItem)) return true; 
        }
        return false;
    }

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

    /**
     * @return Item|null
     */
    public function getParent(): ?Item
    {
        return $this->parent;
    }

    /**
     * @return int
     */
    public function getSortOrder(): int
    {
        return $this->sortOrder;
    }

    /**
     * @param int $sortOrder
     * @return Item
     */
    public function setSortOrder(int $sortOrder): Item
    {
        $this->sortOrder = $sortOrder;
        return $this;
    }
}