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<?php
/**
 * Landofcoder
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Landofcoder.com license that is
 * available through the world-wide-web at this URL:
 * https://landofcoder.com/license-agreement.html
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade this extension to newer
 * version in the future.
 *
 * @category   Landofcoder
 * @package    Lofmp_Blog
 * @copyright  Copyright (c) 2016 Landofcoder (https://landofcoder.com/)
 * @license    https://landofcoder.com/LICENSE-1.0.html
 */
namespace Lofmp\Blog\Block\Category;

use Lofmp\Blog\Block\AbstractBlock;
use Lofmp\Blog\Model\Category;

class CategoryList extends AbstractBlock
{

	/**
	 * @var \Lofmp\Blog\Model\CategoryFactory
	 */
	protected $_categoryFactory;

	/**
	 * @var Lofmp\Blog\Model\ResourceModel\Category\Collection
	 */
	protected $_colleciton;

	/**
	 * @param \Magento\Framework\View\Element\Template\Context
	 * @param \Lofmp\Blog\Helper\Data $blogHelper
     * @param \Magento\Framework\Registry $registry
	 * @param \Lofmp\Blog\Model\CategoryFactory $category
     * @param \Lofmp\Blog\Model\Url $url
	 * @param array
	 */
	public function __construct(
		\Magento\Framework\View\Element\Template\Context $context,
		\Lofmp\Blog\Helper\Data $blogHelper,
		\Magento\Framework\Registry $registry,
		\Lofmp\Blog\Model\CategoryFactory $categoryFactory,
        \Lofmp\Blog\Model\Url $url,
		array $data = []
		)
    {
		parent::__construct($context, $registry, $blogHelper, $url, $data);
		$this->_categoryFactory = $categoryFactory;
	}

    /**
     * draw item
     *
     * @param mixed $collection
     * @param mixed $cat
     * @param int $level
     * @return mixed
     */
    public function drawItems($collection, $cat, $level = 0)
    {
        foreach ($collection as $_cat) {
            if ($_cat->getParentId() == $cat->getId()) {
                $children[] = $this->drawItems($collection, $_cat, $level+1);
                $cat->setChildren($children);
            }
        }
        $cat->setSelevel($level);
        return $cat;
    }

    /**
     * @inheritdoc
     */
	public function _toHtml()
    {
		if(!$this->_blogHelper->getConfig('general_settings/enable')) return;
		$store = $this->_storeManager->getStore();
		$collection = $this->_categoryFactory->create()
            ->getCollection()
            ->addFieldToFilter('is_active', Category::STATUS_ENABLED)
            ->addFieldToFilter('is_approved', Category::STATUS_APPROVED)
            ->addStoreFilter($store)
            ->setOrder("cat_position", "ASC");
		if ($this->getAuthor()) {
            $collection->addFieldToFilter("seller_id", array(
                array('finset'=> array('0')),
                array('finset'=> array($this->getAuthor()->getData('seller_id'))),
            )
            );
        }

		$cats = [];
        foreach ($collection as $_cat) {
            if (!$_cat->getParentId()) {
                $cats[] = $this->drawItems($collection, $_cat);
            }
        }
		$this->setCollection($cats);
		return parent::_toHtml();
	}

    /**
     * draw item
     *
     * @param mixed $collection
     * @param string $html
     * @return string
     */
	public function drawItem($collection, $html = '')
    {
		foreach ($collection as $_cat) {
			$children = $_cat->getChildren();
			$class = '';
			if ($children) $class = "class='level" . $_cat->getLevel() . "' parent";
			$html .= '<li ' . $class . ' >';
			$html .= '<a href="' . $_cat->getUrl() .'">';
			$html .= $_cat->getName();
			$html .= '</a>';
			if ($children) {
				$html .= '<span class="opener"><i class="fa fa-plus-square-o"></i></span>';
				$html .= '<ul class="level' . $_cat->getLevel() . ' children">';
				$html .= $this->drawItem($children);
				$html .= '</ul>';
			}
			$html .= '</li>';
		}
		return $html;
	}

    /**
     * get category html
     *
     * @return string
     */
	public function getCategoryHtml()
    {
		$collection = $this->getCollection();
		$html = $this->drawItem($collection, '');
		return $html;
	}
}