<?php
/*
* 2007-2013 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  2007-2013 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 StatsBestCustomers extends ModuleGrid
{
	private $_html;
	private $_query;
	private $_columns;
	private $_defaultSortColumn;
	private $_defaultSortDirection;
	private $_emptyMessage;
	private $_pagingMessage;

	public function __construct()
	{
		$this->name = 'statsbestcustomers';
		$this->tab = 'analytics_stats';
		$this->version = 1.0;
		$this->author = 'PrestaShop';
		$this->need_instance = 0;
		
		parent::__construct();
		
		$this->_defaultSortColumn = 'totalMoneySpent';
		$this->_defaultSortDirection = 'DESC';
		$this->_emptyMessage = $this->l('Empty recordset returned');
		$this->_pagingMessage = sprintf($this->l('Displaying %1$s of %2$s'), '{0} - {1}', '{2}');

		$currency = new Currency(Configuration::get('PS_CURRENCY_DEFAULT'));
		
		$this->_columns = array(
			array(
				'id' => 'lastname',
				'header' => $this->l('Last Name'),
				'dataIndex' => 'lastname',
				'align' => 'center'
			),
			array(
				'id' => 'firstname',
				'header' => $this->l('First Name'),
				'dataIndex' => 'firstname',
				'align' => 'center'
			),
			array(
				'id' => 'email',
				'header' => $this->l('Email'),
				'dataIndex' => 'email',
				'align' => 'center'
			),
			array(
				'id' => 'totalVisits',
				'header' => $this->l('Visits'),
				'dataIndex' => 'totalVisits',
				'align' => 'center'
			),
			array(
				'id' => 'totalValidOrders',
				'header' => $this->l('Valid orders'),
				'dataIndex' => 'totalValidOrders',
				'align' => 'center'
			),
			array(
				'id' => 'totalMoneySpent',
				'header' => $this->l('Money spent').' ('.Tools::safeOutput($currency->iso_code).')',
				'dataIndex' => 'totalMoneySpent',
				'align' => 'center'
			)
		);

		$this->displayName = $this->l('Best customers');
		$this->description = $this->l('A list of best customers.');
	}

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

	public function hookAdminStatsModules($params)
	{
		$engineParams = array(
			'id' => 'id_customer',
			'title' => $this->displayName,
			'columns' => $this->_columns,
			'defaultSortColumn' => $this->_defaultSortColumn,
			'defaultSortDirection' => $this->_defaultSortDirection,
			'emptyMessage' => $this->_emptyMessage,
			'pagingMessage' => $this->_pagingMessage
		);
		if (Tools::getValue('export'))
			$this->csvExport($engineParams);
		$this->_html = '
		<div class="panel-heading">
			'.$this->displayName.'
		</div>
		<h4>'.$this->l('Guide').'</h4>
			<div class="alert alert-warning">
				<h4>'.$this->l('Develop clients\' loyalty').'</h4>
				<p>
					'.$this->l('Keeping a client is more profitable than gaining a new one. That is one of the many reasons it is necessary to cultivate customer loyalty.').' <br />
					'.$this->l('Word of mouth is also a means for getting new, satisfied clients. A dissatisfied customer can hurt your e-reputation and obstruct future sales goals.').'<br />
					'.$this->l('In order to achieve this goal, you can organize:').'
					<ul>
						<li>'.$this->l('Punctual operations: commercial rewards (personalized special offers, product or service offered), non commercial rewards (priority handling of an order or a product), pecuniary rewards (bonds, discount coupons, payback).').'</li>
						<li>'.$this->l('Sustainable operations: loyalty points or cards, which not only justify communication between merchant and client, but also offer advantages to clients (private offers, discounts).').'</li>
					</ul>
					'.$this->l('These operations encourage clients to buy products and visit your e-store regularly.').'
				</p>
			</div>
		'.$this->engine($engineParams).'
		<a class="btn btn-default export-csv" href="'.htmlentities($_SERVER['REQUEST_URI']).'&export=1">
			<i class="icon-cloud-upload"></i> '.$this->l('CSV Export').'
		</a>';
		return $this->_html;
	}

	public function getData()
	{
		$this->_query = '
		SELECT SQL_CALC_FOUND_ROWS c.`id_customer`, c.`lastname`, c.`firstname`, c.`email`,
			COUNT(co.`id_connections`) as totalVisits,
			IFNULL((
				SELECT ROUND(SUM(IFNULL(o.`total_paid_real`, 0) / cu.conversion_rate), 2) 
				FROM `'._DB_PREFIX_.'orders` o
				LEFT JOIN `'._DB_PREFIX_.'currency` cu ON o.id_currency = cu.id_currency
				WHERE o.id_customer = c.id_customer
				AND o.invoice_date BETWEEN '.$this->getDate().'
				AND o.valid
			), 0) as totalMoneySpent,
			IFNULL((
				SELECT COUNT(*)
				FROM `'._DB_PREFIX_.'orders` o
				WHERE o.id_customer = c.id_customer
				AND o.invoice_date BETWEEN '.$this->getDate().'
				AND o.valid
			), 0) as totalValidOrders
		FROM `'._DB_PREFIX_.'customer` c
		LEFT JOIN `'._DB_PREFIX_.'guest` g ON c.`id_customer` = g.`id_customer`
		LEFT JOIN `'._DB_PREFIX_.'connections` co ON g.`id_guest` = co.`id_guest`
		WHERE co.date_add BETWEEN '.$this->getDate()
			.Shop::addSqlRestriction(Shop::SHARE_CUSTOMER, 'c').
		'GROUP BY c.`id_customer`, c.`lastname`, c.`firstname`, c.`email`';
		if (Validate::IsName($this->_sort))
		{
			$this->_query .= ' ORDER BY `'.$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))
			$this->_query .= ' LIMIT '.$this->_start.', '.($this->_limit);
		$this->_values = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($this->_query);
		$this->_totalCount = Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('SELECT FOUND_ROWS()');
	}
}
