<?php
/*
* 2007-2011 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  2007-2011 PrestaShop SA
*  @version  Release: $Revision: 1.4 $
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

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

class StatsSales extends ModuleGraph
{
    private $_html = '';
    private $_query = '';
    private $_query2 = '';
    private $_option = '';
    private $id_country = '';

    function __construct()
    {
        $this->name = 'statssales';
        $this->tab = 'analytics_stats';
        $this->version = 1.0;
		$this->author = 'PrestaShop';
		
		parent::__construct();
		
        $this->displayName = $this->l('Sales and orders');
        $this->description = $this->l('Display the sales evolution and orders by statuses');
    }
	
	public function install()
	{
		return (parent::install() AND $this->registerHook('AdminStatsModules'));
	}
		
	public function hookAdminStatsModules($params)
	{
		global $cookie;
		
		$totals = $this->getTotals();
		$currency = new Currency((int)Configuration::get('PS_CURRENCY_DEFAULT'));
		if (($id_export = (int)Tools::getValue('export')) == 1)
			$this->csvExport(array('layers' => 2, 'type' => 'line', 'option' => '1-'.(int)Tools::getValue('id_country')));
		elseif ($id_export == 2)
			 $this->csvExport(array('layers' => 0, 'type' => 'line', 'option' => '2-'.(int)Tools::getValue('id_country')));
		elseif ($id_export == 3)
			$this->csvExport(array('type' => 'pie', 'option' => '3-'.(int)Tools::getValue('id_country')));
			
		$this->_html = '
		<fieldset class="width3"><legend><img src="../modules/'.$this->name.'/logo.gif" /> '.$this->displayName.'</legend>
			<form action="'.$_SERVER['REQUEST_URI'].'" method="post" style="float: right; margin-left: 10px;">
				<select name="id_country">
					<option value="0"'.((!Tools::getValue('id_order_state')) ? ' selected="selected"' : '').'>'.$this->l('All').'</option>';
		foreach (Country::getCountries($cookie->id_lang) AS $country)
			$this->_html .= '<option value="'.$country['id_country'].'"'.(($country['id_country'] == Tools::getValue('id_country')) ? ' selected="selected"' : '').'>'.$country['name'].'</option>';
		$this->_html .= '</select>
				<input type="submit" name="submitCountry" value="'.$this->l('Filter').'" class="button" />
			</form>
			<p><center><img src="../img/admin/down.gif" />
				'.$this->l('These graphs represent the evolution of your orders and sales turnover for a given period. This tool allows for quick overview of the viability of your shop. You can also keep watch on the difference between time periods (like the holiday season). Only valid orders are included in these two graphs.').'
			</center></p>
			<p>'.$this->l('Orders placed:').' '.(int)($totals['orderCount']).'</p>
			<p>'.$this->l('Products bought:').' '.(int)($totals['products']).'</p>
			<center>'.ModuleGraph::engine(array('type' => 'line', 'option' => '1-'.(int)(Tools::getValue('id_country')), 'layers' => 2)).'</center>
			<p><a href="'.$_SERVER['REQUEST_URI'].'&export=1"><img src="../img/admin/asterisk.gif" alt="" />'.$this->l('CSV Export').'</a></p>
			<p>'.$this->l('Sales:').' '.Tools::displayPrice($totals['orderSum'], $currency).'</p>
			<center>'.ModuleGraph::engine(array('type' => 'line', 'option' => '2-'.(int)(Tools::getValue('id_country')))).'</center></p>
			<p><a href="'.$_SERVER['REQUEST_URI'].'&export=2"><img src="../img/admin/asterisk.gif" alt="" />'.$this->l('CSV Export').'</a></p>
			<p class="space"><img src="../img/admin/down.gif" />
				'.$this->l('You can see the order state distribution below.').'
			</p><br />
			'.($totals['orderCount'] ? ModuleGraph::engine(array('type' => 'pie', 'option' => '3-'.(int)Tools::getValue('id_country'))) : $this->l('No orders for this period.')).'</center>
			<p><a href="'.$_SERVER['REQUEST_URI'].'&export=3"><img src="../img/admin/asterisk.gif" />'.$this->l('CSV Export').'</a></p>
		</fieldset>
		<br class="clear" />
		<fieldset class="width3"><legend><img src="../img/admin/comment.gif" /> '.$this->l('Guide').'</legend>
			<h2>'.$this->l('Various order statuses').'</h2>
			<p>
				'.$this->l('In your back-office, you can find the following order statuses : Awaiting check payment, Payment accepted, Preparation in progress, Shipping, Delivered, Cancelled, Refund, Payment error, Out of stock, and Awaiting bank wire payment.').'<br />
				'.$this->l('Statuses cannot be removed from the back-office, but you have the option to add more.').'
			</p>
		</fieldset>';
		return $this->_html;
	}

	private function getTotals()
	{
		$result1 = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
		SELECT COUNT(o.`id_order`) as orderCount, SUM(o.`total_paid_real` / o.conversion_rate) as orderSum
		FROM `'._DB_PREFIX_.'orders` o
		'.((int)(Tools::getValue('id_country')) ? 'LEFT JOIN `'._DB_PREFIX_.'address` a ON o.id_address_delivery = a.id_address' : '').'
		WHERE o.valid = 1
		'.((int)(Tools::getValue('id_country')) ? 'AND a.id_country = '.(int)Tools::getValue('id_country') : '').'
		AND o.`invoice_date` BETWEEN '.ModuleGraph::getDateBetween());
		
		$result2 = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
		SELECT SUM(od.product_quantity) as products
		FROM `'._DB_PREFIX_.'orders` o
		LEFT JOIN `'._DB_PREFIX_.'order_detail` od ON od.`id_order` = o.`id_order`
		'.((int)(Tools::getValue('id_country')) ? 'LEFT JOIN `'._DB_PREFIX_.'address` a ON o.id_address_delivery = a.id_address' : '').'
		WHERE o.valid = 1
		'.((int)Tools::getValue('id_country') ? 'AND a.id_country = '.(int)Tools::getValue('id_country') : '').'
		AND o.`invoice_date` BETWEEN '.ModuleGraph::getDateBetween());
		return array_merge($result1, $result2);
	}
	
	public function setOption($options, $layers = 1)
	{
		list($this->_option, $this->id_country) = explode('-', $options);
		switch ($this->_option)
		{
			case 1:
				$this->_titles['main'][0] = $this->l('Products and orders');
				$this->_titles['main'][1] = $this->l('Orders');
				$this->_titles['main'][2] = $this->l('Products');
				break;
			case 2:
				$currency = new Currency((int)Configuration::get('PS_CURRENCY_DEFAULT'));
				$this->_titles['main'] = $this->l('Sales in').' '.$currency->iso_code;
				break;
			case 3:
				$this->_titles['main'] = $this->l('Percentage of orders by status');
				break;
		}
	}
	
	protected function getData($layers)
	{
		if ($this->_option == 3)
			return $this->getStatesData();

		$this->_query = '
			SELECT o.`invoice_date`, o.`total_paid_real` / o.conversion_rate AS total_paid_real, SUM(od.product_quantity) as product_quantity
			FROM `'._DB_PREFIX_.'orders` o
			LEFT JOIN `'._DB_PREFIX_.'order_detail` od ON od.`id_order` = o.`id_order`
			'.((int)($this->id_country) ? 'LEFT JOIN `'._DB_PREFIX_.'address` a ON o.id_address_delivery = a.id_address' : '').'
			WHERE o.valid = 1
			'.((int)($this->id_country) ? 'AND a.id_country = '.(int)$this->id_country : '').'
			AND o.`invoice_date` BETWEEN ';
		$this->_query2 = ' GROUP BY o.id_order';
		$this->setDateGraph($layers, true);
	}
	
	protected function setYearValues($layers)
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->ExecuteS($this->_query.$this->getDate().$this->_query2);
		foreach ($result AS $row)
			if ($this->_option == 1)
			{
				$this->_values[0][(int)(substr($row['invoice_date'], 5, 2))] += 1;
				$this->_values[1][(int)(substr($row['invoice_date'], 5, 2))] += $row['product_quantity'];
			}
			else
				$this->_values[(int)(substr($row['invoice_date'], 5, 2))] += $row['total_paid_real'];
	}
	
	protected function setMonthValues($layers)
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->ExecuteS($this->_query.$this->getDate().$this->_query2);
		foreach ($result AS $row)
			if ($this->_option == 1)
			{
				$this->_values[0][(int)(substr($row['invoice_date'], 8, 2))] += 1;
				$this->_values[1][(int)(substr($row['invoice_date'], 8, 2))] += $row['product_quantity'];
			}
			else
				$this->_values[(int)(substr($row['invoice_date'], 8, 2))] += $row['total_paid_real'];
	}

	protected function setDayValues($layers)
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->ExecuteS($this->_query.$this->getDate().$this->_query2);
		foreach ($result AS $row)
			if ($this->_option == 1)
			{
				$this->_values[0][(int)(substr($row['invoice_date'], 11, 2))] += 1;
				$this->_values[1][(int)(substr($row['invoice_date'], 11, 2))] += $row['product_quantity'];
			}
			else
				$this->_values[(int)(substr($row['invoice_date'], 11, 2))] += $row['total_paid_real'];
	}
	
	private function getStatesData()
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->ExecuteS('
		SELECT osl.`name`, COUNT(oh.`id_order`) as total
		FROM `'._DB_PREFIX_.'order_state` os
		LEFT JOIN `'._DB_PREFIX_.'order_state_lang` osl ON (os.`id_order_state` = osl.`id_order_state` AND osl.`id_lang` = '.(int)($this->getLang()).')
		LEFT JOIN `'._DB_PREFIX_.'order_history` oh ON os.`id_order_state` = oh.`id_order_state`
		LEFT JOIN `'._DB_PREFIX_.'orders` o ON o.`id_order` = oh.`id_order`
		'.((int)($this->id_country) ? 'LEFT JOIN `'._DB_PREFIX_.'address` a ON o.id_address_delivery = a.id_address' : '').'
		WHERE oh.`id_order_history` = (
			SELECT ios.`id_order_history`
			FROM `'._DB_PREFIX_.'order_history` ios
			WHERE ios.`id_order` = oh.`id_order`
			ORDER BY ios.`date_add` DESC, oh.`id_order_history` DESC
			LIMIT 1
		)
		'.((int)($this->id_country) ? 'AND a.id_country = '.(int)($this->id_country) : '').'
		AND o.`date_add` BETWEEN '.ModuleGraph::getDateBetween().'
		GROUP BY oh.`id_order_state`');
		foreach ($result as $row)
		{
		    $this->_values[] = $row['total'];
		    $this->_legend[] = $row['name'];
		}
	}
}