<?php
/*
* 2007-2015 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2015 PrestaShop SA
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

if (!defined('_PS_VERSION_'))
	exit;

class StatsBestCategories extends ModuleGrid
{
	private $html;
	private $query;
	private $columns;
	private $default_sort_column;
	private $default_sort_direction;
	private $empty_message;
	private $paging_message;

	public function __construct()
	{
		$this->name = 'statsbestcategories';
		$this->tab = 'analytics_stats';
		$this->version = '1.5.0';
		$this->author = 'PrestaShop';
		$this->need_instance = 0;

		parent::__construct();

		$this->default_sort_column = 'totalPriceSold';
		$this->default_sort_direction = 'DESC';
		$this->empty_message = $this->l('Empty recordset returned');
		$this->paging_message = sprintf($this->l('Displaying %1$s of %2$s'), '{0} - {1}', '{2}');

		$this->columns = array(
			array(
				'id' => 'name',
				'header' => $this->l('Name'),
				'dataIndex' => 'name',
				'align' => 'left'
			),
			array(
				'id' => 'totalQuantitySold',
				'header' => $this->l('Total Quantity Sold'),
				'dataIndex' => 'totalQuantitySold',
				'align' => 'center'
			),
			array(
				'id' => 'totalPriceSold',
				'header' => $this->l('Total Price'),
				'dataIndex' => 'totalPriceSold',
				'align' => 'right'
			),
			array(
				'id' => 'totalWholeSalePriceSold',
				'header' => $this->l('Total Margin'),
				'dataIndex' => 'totalWholeSalePriceSold',
				'align' => 'center'
			),
			array(
				'id' => 'totalPageViewed',
				'header' => $this->l('Total Viewed'),
				'dataIndex' => 'totalPageViewed',
				'align' => 'center'
			)
		);

		$this->displayName = $this->l('Best categories');
		$this->description = $this->l('Adds a list of the best categories to the Stats dashboard.');
		$this->ps_versions_compliancy = array('min' => '1.6', 'max' => _PS_VERSION_);
	}

	public function install()
	{
		return (parent::install() && $this->registerHook('AdminStatsModules'));
	}

	public function hookAdminStatsModules($params)
	{
        $onlyChildren = (int)Tools::getValue('onlyChildren');
        
		$engine_params = array(
			'id' => 'id_category',
			'title' => $this->displayName,
			'columns' => $this->columns,
			'defaultSortColumn' => $this->default_sort_column,
			'defaultSortDirection' => $this->default_sort_direction,
			'emptyMessage' => $this->empty_message,
			'pagingMessage' => $this->paging_message,
            'customParams' => array(
                'onlyChildren' => $onlyChildren,
            )
		);

		if (Tools::getValue('export'))
			$this->csvExport($engine_params);

		$this->html = '
			<div class="panel-heading">
				<i class="icon-sitemap"></i> '.$this->displayName.'
			</div>
			'.$this->engine($engine_params).'
            <div class="row form-horizontal">
                <div class="col-md-3">
                    <a class="btn btn-default export-csv" href="'.Tools::safeOutput($_SERVER['REQUEST_URI'].'&export=1').'">
                        <i class="icon-cloud-upload"></i> '.$this->l('CSV Export').'
                    </a>
                </div>
                <div class="col-md-9">
                    <div class="checkbox">
                        <label for="onlyChildren">
                            <input type="checkbox" name="onlyChildren" id="onlyChildren" value="1" '.($onlyChildren == 1 ? 'checked="checked"' : '').'>
                            '.$this->l('Display final level categories only (that have no child categories)').'
                        </label>
                    </div>

                </div>
            </div>
            <script type="text/javascript">
                $(function(){
                    $("#onlyChildren").change(function(){
                        $("#calendar_form").append($(this).clone().css("display", "none")).submit();
                    });
                });
            </script>';

		return $this->html;
	}

	public function getData()
	{
		$currency = new Currency(Configuration::get('PS_CURRENCY_DEFAULT'));
		$date_between = $this->getDate();
		$id_lang = $this->getLang();

		//If column 'order_detail.original_wholesale_price' does not exist, create it
		Db::getInstance(_PS_USE_SQL_SLAVE_)->query('SHOW COLUMNS FROM `'._DB_PREFIX_.'order_detail` LIKE "original_wholesale_price"');
		if (Db::getInstance()->NumRows() == 0) {
			Db::getInstance()->execute('ALTER TABLE `'._DB_PREFIX_.'order_detail` ADD `original_wholesale_price` DECIMAL( 20, 6 ) NOT NULL DEFAULT  "0.000000"');
		}

		// If a shop is selected, get all children categories for the shop
		$categories = array();
		if (Shop::getContext() != Shop::CONTEXT_ALL)
		{
			$sql = 'SELECT c.nleft, c.nright
					FROM '._DB_PREFIX_.'category c
					WHERE c.id_category IN (
						SELECT s.id_category
						FROM '._DB_PREFIX_.'shop s
						WHERE s.id_shop IN ('.implode(', ', Shop::getContextListShopID()).')
					)';
			if ($result = Db::getInstance()->executeS($sql))
			{
				$ntree_restriction = array();
				foreach ($result as $row)
					$ntree_restriction[] = '(nleft >= '.$row['nleft'].' AND nright <= '.$row['nright'].')';

				if ($ntree_restriction)
				{
					$sql = 'SELECT id_category
							FROM '._DB_PREFIX_.'category
							WHERE '.implode(' OR ', $ntree_restriction);
					if ($result = Db::getInstance()->executeS($sql))
					{
						foreach ($result as $row)
							$categories[] = $row['id_category'];
					}
				}
			}
		}

        $onlyChildren = '';
        if ((int)Tools::getValue('onlyChildren') == 1) {
            $onlyChildren = 'AND NOT EXISTS (SELECT NULL FROM '._DB_PREFIX_.'category WHERE id_parent = ca.id_category)';
        }

		// Get best categories
		if (version_compare(_PS_VERSION_, '1.6.1.1', '>=')) {
			$this->query = '
				SELECT SQL_CALC_FOUND_ROWS ca.`id_category`, CONCAT(parent.name, \' > \', calang.`name`) as name,
				IFNULL(SUM(t.`totalQuantitySold`), 0) AS totalQuantitySold,
				ROUND(IFNULL(SUM(t.`totalPriceSold`), 0), 2) AS totalPriceSold,
				ROUND(IFNULL(SUM(t.`totalWholeSalePriceSold`), 0), 2) AS totalWholeSalePriceSold,
				(
					SELECT IFNULL(SUM(pv.`counter`), 0)
					FROM `'._DB_PREFIX_.'page` p
					LEFT JOIN `'._DB_PREFIX_.'page_viewed` pv ON p.`id_page` = pv.`id_page`
					LEFT JOIN `'._DB_PREFIX_.'date_range` dr ON pv.`id_date_range` = dr.`id_date_range`
					LEFT JOIN `'._DB_PREFIX_.'product` pr ON CAST(p.`id_object` AS UNSIGNED INTEGER) = pr.`id_product`
					LEFT JOIN `'._DB_PREFIX_.'category_product` capr2 ON capr2.`id_product` = pr.`id_product`
					WHERE capr.`id_category` = capr2.`id_category`
					AND p.`id_page_type` = 1
					AND dr.`time_start` BETWEEN '.$date_between.'
					AND dr.`time_end` BETWEEN '.$date_between.'
				) AS totalPageViewed,
				(
                    SELECT COUNT(id_category) FROM '._DB_PREFIX_.'category WHERE `id_parent` = ca.`id_category`
			    ) AS hasChildren
			FROM `'._DB_PREFIX_.'category` ca
			LEFT JOIN `'._DB_PREFIX_.'category_lang` calang ON (ca.`id_category` = calang.`id_category` AND calang.`id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('calang').')
			LEFT JOIN `'._DB_PREFIX_.'category_lang` parent ON (ca.`id_parent` = parent.`id_category` AND parent.`id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('parent').')
			LEFT JOIN `'._DB_PREFIX_.'category_product` capr ON ca.`id_category` = capr.`id_category`
			LEFT JOIN (
				SELECT pr.`id_product`, t.`totalQuantitySold`, t.`totalPriceSold`, t.`totalWholeSalePriceSold`
				FROM `'._DB_PREFIX_.'product` pr
				LEFT JOIN (
					SELECT pr.`id_product`, pa.`wholesale_price`,
						IFNULL(SUM(cp.`product_quantity`), 0) AS totalQuantitySold,
						IFNULL(SUM(cp.`product_price` * cp.`product_quantity`), 0) / o.conversion_rate AS totalPriceSold,
						IFNULL(SUM(
							CASE
								WHEN cp.`original_wholesale_price` <> "0.000000"
								THEN cp.`original_wholesale_price` * cp.`product_quantity`
								WHEN pa.`wholesale_price` <> "0.000000"
								THEN pa.`wholesale_price` * cp.`product_quantity`
								WHEN pr.`wholesale_price` <> "0.000000"
								THEN pr.`wholesale_price` * cp.`product_quantity`
							END
						), 0) / o.conversion_rate AS totalWholeSalePriceSold
					FROM `'._DB_PREFIX_.'product` pr
					LEFT OUTER JOIN `'._DB_PREFIX_.'order_detail` cp ON pr.`id_product` = cp.`product_id`
					LEFT JOIN `'._DB_PREFIX_.'orders` o ON o.`id_order` = cp.`id_order`
					LEFT JOIN `'._DB_PREFIX_.'product_attribute` pa ON pa.`id_product_attribute` = cp.`product_attribute_id`
					'.Shop::addSqlRestriction(Shop::SHARE_ORDER, 'o').'
					WHERE o.valid = 1
					AND o.invoice_date BETWEEN '.$date_between.'
					GROUP BY pr.`id_product`
				) t ON t.`id_product` = pr.`id_product`
			) t	ON t.`id_product` = capr.`id_product`
			'.(($categories) ? 'WHERE ca.id_category IN ('.implode(', ', $categories).')' : '').'
			'.$onlyChildren.'
			GROUP BY ca.`id_category`
			HAVING ca.`id_category` != 1';
		}else{
			$this->query = '
			SELECT SQL_CALC_FOUND_ROWS ca.`id_category`, CONCAT(parent.name, \' > \', calang.`name`) as name,
				IFNULL(SUM(t.`totalQuantitySold`), 0) AS totalQuantitySold,
				ROUND(IFNULL(SUM(t.`totalPriceSold`), 0), 2) AS totalPriceSold,
				(
					SELECT IFNULL(SUM(pv.`counter`), 0)
					FROM `' . _DB_PREFIX_ . 'page` p
					LEFT JOIN `' . _DB_PREFIX_ . 'page_viewed` pv ON p.`id_page` = pv.`id_page`
					LEFT JOIN `' . _DB_PREFIX_ . 'date_range` dr ON pv.`id_date_range` = dr.`id_date_range`
					LEFT JOIN `' . _DB_PREFIX_ . 'product` pr ON CAST(p.`id_object` AS UNSIGNED INTEGER) = pr.`id_product`
					LEFT JOIN `' . _DB_PREFIX_ . 'category_product` capr2 ON capr2.`id_product` = pr.`id_product`
					WHERE capr.`id_category` = capr2.`id_category`
					AND p.`id_page_type` = 1
					AND dr.`time_start` BETWEEN ' . $date_between . '
					AND dr.`time_end` BETWEEN ' . $date_between . '
				) AS totalPageViewed,
				(
                    SELECT COUNT(id_category) FROM '._DB_PREFIX_.'category WHERE `id_parent` = ca.`id_category`
			    ) AS hasChildren
			FROM `' . _DB_PREFIX_ . 'category` ca
			LEFT JOIN `' . _DB_PREFIX_ . 'category_lang` calang ON (ca.`id_category` = calang.`id_category` AND calang.`id_lang` = ' . (int)$id_lang . Shop::addSqlRestrictionOnLang('calang') . ')
			LEFT JOIN `' . _DB_PREFIX_ . 'category_lang` parent ON (ca.`id_parent` = parent.`id_category` AND parent.`id_lang` = ' . (int)$id_lang . Shop::addSqlRestrictionOnLang('parent') . ')
			LEFT JOIN `' . _DB_PREFIX_ . 'category_product` capr ON ca.`id_category` = capr.`id_category`
			LEFT JOIN (
				SELECT pr.`id_product`, t.`totalQuantitySold`, t.`totalPriceSold`
				FROM `' . _DB_PREFIX_ . 'product` pr
				LEFT JOIN (
					SELECT pr.`id_product`,
					IFNULL(SUM(cp.`product_quantity`), 0) AS totalQuantitySold,
					IFNULL(SUM(cp.`product_price` * cp.`product_quantity`), 0) / o.conversion_rate AS totalPriceSold
					FROM `' . _DB_PREFIX_ . 'product` pr
					LEFT OUTER JOIN `' . _DB_PREFIX_ . 'order_detail` cp ON pr.`id_product` = cp.`product_id`
					LEFT JOIN `' . _DB_PREFIX_ . 'orders` o ON o.`id_order` = cp.`id_order`
					' . Shop::addSqlRestriction(Shop::SHARE_ORDER, 'o') . '
					WHERE o.valid = 1
					AND o.invoice_date BETWEEN ' . $date_between . '
					GROUP BY pr.`id_product`
				) t ON t.`id_product` = pr.`id_product`
			) t	ON t.`id_product` = capr.`id_product`
			' . (($categories) ? 'WHERE ca.id_category IN (' . implode(', ', $categories) . ')' : '') . '
			'.$onlyChildren.'
			GROUP BY ca.`id_category`
			HAVING ca.`id_category` != 1';
		}

		if (Validate::IsName($this->_sort))
		{
			$this->query .= ' ORDER BY `'.bqSQL($this->_sort).'`';
			if (isset($this->_direction) && Validate::isSortDirection($this->_direction))
				$this->query .= ' '.$this->_direction;
		}

		if (($this->_start === 0 || Validate::IsUnsignedInt($this->_start)) && Validate::IsUnsignedInt($this->_limit))
			$this->query .= ' LIMIT '.(int)$this->_start.', '.(int)$this->_limit;

		$values = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($this->query);
		foreach ($values as &$value){

            if ((int)Tools::getIsset('export') == false) {
                $parts = explode('>', $value['name']);
                $value['name'] = '<i class="icon-folder-open"></i> '.trim($parts[0]).' > ';
                if ((int)$value['hasChildren'] == 0) {
                    $value['name'] .= '&bull; ';
                } else {
                    $value['name'] .= '<i class="icon-folder-open"></i> ';
                }
                $value['name'] .= trim($parts[1]);
            }

			if (isset($value['totalWholeSalePriceSold'])) {
				$value['totalWholeSalePriceSold'] = Tools::displayPrice($value['totalPriceSold'] - $value['totalWholeSalePriceSold'], $currency);
			}
			$value['totalPriceSold'] = Tools::displayPrice($value['totalPriceSold'], $currency);
		}

		$this->_values = $values;
		$this->_totalCount = Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('SELECT FOUND_ROWS()');
	}
}
