<?php

class CmsPsCategory extends ObjectModel {

	public $id_category;
	public $id_parent;
	public $date_add;
	public $date_upd;
	public $active;

	public $title;
	public $description;
	public $slug;
	public $meta_title;
	public $meta_desc;
	public $id_category_store;
	
	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'cmsps_categories',
		'primary' => 'id_category',
		'multilang' => TRUE,
		'multilang_shop' => TRUE,
		'fields' => array(
			'id_parent'     =>      array('type' => self::TYPE_INT, 'validate' => 'isInt'),
			'active'        =>      array('type' => self::TYPE_INT, 'validate' => 'isInt'),
			'id_category_store' =>      array('type' => self::TYPE_INT, 'validate' => 'isInt'),

			// Lang fields
			'title'         =>      array('type' => self::TYPE_STRING, 'lang' => TRUE, 'validate' => 'isGenericName', 'required' => TRUE, 'size' => 255),
			'slug'          =>      array('type' => self::TYPE_STRING, 'lang' => TRUE, 'validate' => 'isGenericName'),
			'description'   =>      array('type' => self::TYPE_HTML, 'lang' => TRUE, 'validate' => 'isCleanHtml'),
			'meta_title'    =>      array('type' => self::TYPE_STRING, 'lang' => TRUE, 'validate' => 'isGenericName'),
			'meta_desc'     =>      array('type' => self::TYPE_STRING, 'lang' => TRUE, 'validate' => 'isGenericName'),
			
			'date_add'     =>       array('type' => self::TYPE_DATE),
			'date_upd'     =>       array('type' => self::TYPE_DATE)
		),
	);

	public function __construct($id = NULL, $id_lang = NULL, $id_shop = NULL) {
		parent::__construct($id, $id_lang, $id_shop);
		$this->id_image = ($this->id && file_exists(_CMS_CAT_IMG_DIR_.(int)$this->id.'.jpg')) ? (int)$this->id : false;
		$this->image_dir = _CMS_CAT_IMG_DIR_;
	}

	public static function getAllCategories($id_lang, $id_shop = NULL) {
		$sql = '
			SELECT c.*, lc.*
			FROM `'._DB_PREFIX_.'cmsps_categories` c
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_lang` lc ON c.`id_category` = lc.`id_category`
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_shop` ls ON c.`id_category` = ls.`id_category`
			WHERE lc.`id_lang` = '.(int)$id_lang;

		if ($id_shop) {
			$sql.= ' AND ls.`id_shop` = '.(int)$id_shop;
		}

		return Db::getInstance()->executeS($sql);
	}

	/**
	 * @param  int   $id_lang [description]
	 * @param  int   $id_shop [description]
	 * @return array $parents [only parent with one level child]
	 * -- Thinking to optimize this function to have all levels
	 */
	public static function getCategoriesTree($id_lang, $id_shop = NULL) {
		$sql = '
			SELECT c.*, lc.*
			FROM `'._DB_PREFIX_.'cmsps_categories` c
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_lang` lc ON c.`id_category` = lc.`id_category`
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_shop` ls ON c.`id_category` = ls.`id_category`
			WHERE lc.`id_lang` = '.(int)$id_lang.' AND c.`id_parent`=0';

		if ($id_shop) {
			$sql.= ' AND ls.`id_shop` = '.(int)$id_shop;
		}

		$childSql = '
			SELECT c.`id_category` as parent, child.`id_category`, child.`title` 
			FROM `'._DB_PREFIX_.'cmsps_categories` c 
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_lang` lc ON c.`id_category` = lc.`id_category` 
			RIGHT JOIN (
				SELECT c1.*, lc1.`title` FROM `'._DB_PREFIX_.'cmsps_categories` c1 
				LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_lang` lc1 ON c1.`id_category` = lc1.`id_category` 
				WHERE lc1.`id_lang` = '.(int)$id_lang;
		if ($id_shop)
			$childSql.= ' AND ls.`id_shop` = '.(int)$id_shop; 
		
		$childSql.=	') as child ON (child.`id_parent` = c.`id_category`) 
			WHERE lc.`id_lang` = '.(int)$id_lang;

		if ($id_shop) {
			$childSql.= ' AND ls.`id_shop` = '.(int)$id_shop;
		}

		$parents = Db::getInstance()->executeS($sql);
		$children = Db::getInstance()->executeS($childSql);

		foreach ($parents as &$cat) {
			// $cat['children'] = array();
			foreach ($children as $key => $value) {
				if((int)$value['parent'] == (int)$cat['id_category'])
					$cat['children'][] = $value;
			}
		}
		// echo "<pre>";var_dump($parents[9]);echo "</pre>";die();

		return $parents;

	}

	public static function getParentPossibility($id_lang, $id_shop = NULL, $id_category = NULL) {
		$sql = '
			SELECT c.*, lc.*
			FROM `'._DB_PREFIX_.'cmsps_categories` c
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_lang` lc ON c.`id_category` = lc.`id_category`
			LEFT JOIN `'._DB_PREFIX_.'cmsps_categories_shop` ls ON c.`id_category` = ls.`id_category`
			WHERE lc.`id_lang` = '.(int)$id_lang;

		if ($id_shop) {
			$sql.= ' AND ls.`id_shop` = '.(int)$id_shop;
		}
		if ($id_category) {
			$sql.= ' AND c.`id_category` != '.(int)$id_category 
				.' AND c.`id_parent` !='.(int)$id_category;
		}

		return Db::getInstance()->executeS($sql);
	}

	public function hasChildren() {
		return (bool) Db::getInstance()->getValue('
			SELECT c.`id_category`
			FROM `'._DB_PREFIX_.'cmsps_categories` c
			WHERE c.`id_parent` = '.(int)$this->id
		);
	}

	public function hasPosts() {
		return (bool) Db::getInstance()->getValue('
			SELECT p.`id_post`
			FROM `'._DB_PREFIX_.'cmsps_posts` p
			WHERE p.`id_category` = '.(int)$this->id
		);
	}

	public static function getTipsofDay($id_category, $id_lang)
	{
		$collection_post = new Collection('CmsPsPost', $id_lang);
		$collection_post->where('id_category', '=', $id_category);
		$collection_post->where('active', '=', 1);
		$collection_post->where('trick', '=', 1);
		$collection_post->orderBy('date_add', 'DESC');
		$collection_post->setPageSize(1);
		$tips_category = $collection_post->getFirst();
		return $tips_category;
	}

	public function getArticles($id_lang, $limit = 10, $num_page, $total = FALSE, $order_by = 'date_add', $filter_word = '')
	{
		$collection_post = new Collection('CmsPsPost', $id_lang);
		$collection_post->where('id_category', '=', $this->id_category);		
		$collection_post->where('active', '=', 1);
		$collection_post->orderBy($order_by, 'DESC');
		$collection_post->setPageSize($limit);
		$collection_post->setPageNumber($num_page);

		if ($filter_word) {
			$collection_post->sqlWhere('title LIKE '.'"%'.$filter_word.'%"');
		}

		if ($total) {
			return $collection_post->count();
		}
		
		$articles = $collection_post->getResults();
		return CmsPsPost::injectsData($articles, TRUE);
	}

	
	public function getChildren($id_lang) 
	{
		$collection_categories = new Collection('CmsPsCategory', $id_lang);
		$collection_categories->where('id_parent', '=', $this->id_category);		
		$collection_categories->where('active', '=', 1);
		return $collection_categories->getResults();
	}

	public static function getRootCategory($id_category) {
		$category = new CmsPsCategory($id_category);
		if (self::isRootCategory($category)) {
			return $category;
		} else {
			$parent = new CmsPsCategory($category->id_parent);
			return self::getRootCategory($parent->id_category);
		}
	}

	public static function isRootCategory(CmsPsCategory $category) {
		return (bool) ($category->id_parent == 0) ? true : false;
	}

}