<?php
if (!defined('_PS_VERSION_'))
	exit;

class Privatesales_similarproducts extends Module
{
	const HAS_ACCESSORIES_UNKNOWN = 0;
	const HAS_ACCESSORIES_YES = 1;
	const HAS_ACCESSORIES_NO = 2;

	private $has_accessories_state = self::HAS_ACCESSORIES_UNKNOWN;
	private $family = null;
	private $label = '';

	private $hooks = array(
			'similarProduct' => array('Accessories or similar products', 'Called on displaying similar product in product details'),
			'simlarProductTabLabel' => array('Tab labl accessories or similar products', 'Called on displaying tab in product details'
				)
		);

	public function __construct()
	{
		$this->name = 'privatesales_similarproducts';
		$this->tab = 'front_office_features';
		$this->version = '1.0';
		$this->author = 'Antadis';
		$this->need_instance = 0;

		parent::__construct();

		$this->displayName = $this->l('Produits complémentaires ou similaires');
		$this->description = $this->l('Ajoute un bloc affichant les produits complémentaires (accessoires) ou les meilleures ventes de la famille d\'un produit.');
	}

	/**
	 * @see ModuleCore::install()
	 */
	public function install()
	{
		// Add custom hooks
		foreach($this->hooks as $k => $v) {
			if(count(Db::getInstance()->ExecuteS('
				SELECT `id_hook`
				FROM `'._DB_PREFIX_.'hook`
				WHERE `name` = "'.$k.'"
				LIMIT 1
			')) == 0) {
				Db::getInstance()->ExecuteS('
					INSERT INTO `'._DB_PREFIX_.'hook`
					VALUES (DEFAULT, "'.$k.'", "'.$v[0].'", "'.$v[1].'", 0, 0)
				');
			}
		}

		$install_success = parent::install();
		if ($install_success) {
			foreach($this->hooks as $k => $v) {
				$install_success = $this->registerHook($k);
				if (!$install_success) {
					break;
				}
			}
		}

		if (!$install_success) {
			$this->uninstall();
			return false;
		}
		return true;
	}

	public function uninstall()
	{
		// Remove custom hooks
		foreach($this->hooks as $k => $v) {
			Db::getInstance()->Execute('
				DELETE FROM `'._DB_PREFIX_.'hook`
				WHERE `name` = "'.$k.'"
			');
		}
		parent::uninstall();
	}

	public function hookSimilarProduct($params)
	{
		if(_PS_MOBILE_) {
			return false;
		}
		$this->initFromHook($params);

		if ($this->has_accessories_state == self::HAS_ACCESSORIES_YES) {
			return $this->displayAccessories($params);
		}

		if ($this->has_accessories_state == self::HAS_ACCESSORIES_NO) {
			return $this->displayBestVPSalesSameFamily($params);
		}
		return '';
	}

	public function hookSimlarProductTabLabel($params)
	{
		if(_PS_MOBILE_) {
			return false;
		}

		$this->initFromHook($params);
		return $this->label;
	}

	private function initFromHook(array &$params)
	{
		if ($this->has_accessories_state != self::HAS_ACCESSORIES_UNKNOWN) {
			return;
		}

		$query = '
			SELECT COUNT(`id_product_2`)
			FROM `'._DB_PREFIX_.'accessory`
			JOIN `'._DB_PREFIX_.'product` p ON p.`id_product` = `id_product_2`
			WHERE `id_product_1` = '.(int)$params['product']->id.'
			AND p.`active` = 1
			';

		if (Db::getInstance()->getValue($query)>0) {
			$this->has_accessories_state = self::HAS_ACCESSORIES_YES;
			$this->label = $this->l('Produits complémentaires');
		}
		else {
			$this->has_accessories_state = self::HAS_ACCESSORIES_NO;
			$this->family = ProductSale::getCategoryFamily($params['category'], $params['sale']->id, $params['cookie']->id_lang);
			if (!empty($this->family)) {
				$bestsellers = ProductSale::getFamilyBestSales($this->family['id_category_family'], $params['cookie']->id_lang,3, 10,$params['product']->id);
				//$this->label = $this->l('Autres produits dans').' '.$this->family['name'];
				if(is_array($bestsellers) && !empty($bestsellers)) {
					$this->label = $this->l('À découvrir');
				}
			}
		}
	}


	private function displayAccessories($params)
	{
		global $smarty;

		$cache_id = (int)$params['cookie']->id_lang.'_'.(int)$params['product']->id;

		if (!$this->isTemplateCached($cache_id)) {
			$other_products = array();

			$accessories = $params['product']->getAccessories($params['cookie']->id_lang);
			if(is_array($accessories)) {

				$currency = new Currency((int)($params['cookie']->id_currency));

				foreach ($accessories AS $accessory)
				{
					$accessory['price'] = Tools::displayPrice(Product::getPriceStatic((int)($accessory['id_product'])), $currency);
					$other_products[] = $accessory;
				}
			}

			if (empty($other_products)) {
				return '';
			}

			$smarty->assign(
				array(
					'label' => $this->label,
					'ps_other_products' => $other_products,
				)
			);
		}

		return $this->flushTemplateCache($cache_id);
	}


	private function displayBestVPSalesSameFamily($params)
	{
		global $smarty;

		$cache_id = (int)$params['cookie']->id_lang.'_'.(int)$params['product']->id;

		if (!$this->isTemplateCached($cache_id)) {
			$currency = new Currency((int)($params['cookie']->id_currency));

			// get all best sales of the product family
			$other_products = array();

			$bestsellers = ProductSale::getFamilyBestSales(
				$this->family['id_category_family'],
				$params['cookie']->id_lang,
				3, 10,
				$params['product']->id
				);

			if(is_array($bestsellers)) {
				foreach ($bestsellers AS $bestseller) {
					$bestseller['price'] = Tools::displayPrice(Product::getPriceStatic((int)($bestseller['id_product'])), $currency);
					$other_products[] = $bestseller;
				}
			}

			if (empty($other_products)) {
				return '';
			}

			$smarty->assign(
				array(
					'label' => $this->label,
					'ps_other_products' => $other_products,
				)
			);
		}

		return $this->flushTemplateCache($cache_id);

	}

	private function isTemplateCached(&$cache_id)
	{
		global $smarty;

		Tools::enableCache();
	 	$smarty->cache_lifetime = 3600;

	 	return $this->isCached('front_similarproducts.tpl', $cache_id);
	}

	private function flushTemplateCache($cache_id)
	{
		global $smarty;

		$display = $this->display(__FILE__, 'front_similarproducts.tpl', $cache_id);
		Tools::restoreCacheSettings();
		$smarty->cache_lifetime = -1;
		return $display;
	}
}