<?php
/**
*    2014 - 2017 MDWeb - Terms of Sale Send
*
*  @author    MDWeb
*  @version   1.3.0
*  @copyright MDWeb 2014 - 2017
*  @license   Commerciale
*/

class MDToSSend extends Module
{
    public function __construct()
    {
        $this->name = 'mdtossend';
        $this->tab = 'checkout';
        $this->version = '1.3.0';
        $this->author = 'MDWeb';
        $this->module_key = '929fa9fa0938030f19c5002cbcf3f385';
        $this->need_instance = 0;
        $this->config = Configuration::get('MD_PDF_CGV');
        parent::__construct();
        $this->displayName = $this->l('Terms of Sale Send');
        $this->description = $this->l('Send your Terms of Sale to your customers when they order');

        /* Backward compatibility */
        if (_PS_VERSION_ < '1.5')
            require(_PS_MODULE_DIR_.$this->name.'/backward_compatibility/backward.php');

        if (!isset($this->config) || empty($this->config))
            $this->warning = $this->l('Please configure '.$this->displayName.' to use it.');
    }
    public function install()
    {
        if (parent::install() == false || !$this->installDb())
            return false;
        //Procedure d'installation pour Prestashop 1.5 et plus
        if (version_compare(_PS_VERSION_, 1.5, '>'))
        {
            if (!$this->registerHook('actionObjectCmsUpdateAfter'))
                return false;
            if (!$this->registerHook('actionValidateOrder'))
                return false;
            if (!$this->registerHook('displayPDFInvoice'))
                return false;

            // Copie du fichier personnalisé Mail en sauvegardant celui d'origine
            if (is_file( _PS_ROOT_DIR_.'/override/classes/Mail.php'))
            {
                if (!copy ( _PS_ROOT_DIR_.'/override/classes/Mail.php', _PS_ROOT_DIR_.'/modules/mdtossend/install/Mail_save.php' ))
                    return false;
            }
            else
            {
                if (!copy ( _PS_ROOT_DIR_.'/modules/mdtossend/install/Mail.php', _PS_ROOT_DIR_.'/override/classes/Mail.php' ))
                    return false;
            }
        }
        //Procedure d'installation pour Prestashop 1.4
        if (version_compare(_PS_VERSION_, 1.4, '>=') && version_compare(_PS_VERSION_, 1.5, '<'))
        {
            if (!$this->registerHook('newOrder'))
                return false;
            //Create hook : actionObjectCmsUpdateAfter
            $sql = 'INSERT INTO  `'._DB_PREFIX_.'hook` (
                        `id_hook` ,
                        `name` ,
                        `title` ,
                        `description` ,
                        `position`
                        )
                        VALUES (
                        NULL ,  \'actionObjectCmsUpdateAfter\',  \'actionObjectCmsUpdateAfter\', NULL ,  0);';
            if (!Db::getInstance()->execute($sql))
            {
                if (!Db::getInstance()->execute('DELETE FROM '._DB_PREFIX_.'hook WHERE name = \'actionObjectCmsUpdateAfter\''))
                    return false;
                if (!Db::getInstance()->execute($sql))
                    return false;
            }
            if (!$this->registerHook('actionObjectCmsUpdateAfter'))
                return false;
            // Copie du fichier personnalisé CMS en sauvegardant celui d'origine
            if (is_file( _PS_ROOT_DIR_.'/override/classes/CMS.php'))
            {
                if (!copy ( _PS_ROOT_DIR_.'/override/classes/CMS.php', _PS_ROOT_DIR_.'/modules/mdtossend/install/CMS_save.php' ))
                    return false;
            }
            else
            {
                if (!copy ( _PS_ROOT_DIR_.'/modules/mdtossend/install/CMS.php', _PS_ROOT_DIR_.'/override/classes/CMS.php' ))
                    return false;
            }
        }
        return true;
    }
    private function installDb()
    {
        $sql = 'CREATE TABLE IF NOT EXISTS `'._DB_PREFIX_.'mdtossend` (
                  `filename` varchar(250) NOT NULL,
                  `id_lang` int(2) NOT NULL,
                  `datetime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
                  PRIMARY KEY (`filename`)
                ) ENGINE='._MYSQL_ENGINE_.' DEFAULT CHARSET=utf8;';
        Db::getInstance()->execute($sql);
        // Create history for PDF Invoice if Prestashop version is up to 1.5
        if (version_compare(_PS_VERSION_, 1.5, '>'))
        {
            $sql_history = 'CREATE TABLE IF NOT EXISTS '._DB_PREFIX_.'mdtossend_history (
                                    `id_cms` INT NOT NULL ,
                                    `id_lang` INT NOT NULL ,
                                    `date_add` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
                                    `meta_title` VARCHAR(255) NOT NULL ,
                                    `content` LONGTEXT NOT NULL ,
                                    PRIMARY KEY (  `id_cms` ,  `id_lang` ,  `date_add` )
                                    ) ENGINE = '._MYSQL_ENGINE_.' DEFAULT CHARSET=utf8 ;';
            Db::getInstance()->execute($sql_history);
        }
        return true;
    }
    public function uninstall()
    {
        if (!parent::uninstall() || !$this->uninstallDb())
            return false;
        return true;
    }
    public function uninstallDb()
    {
        if (!Configuration::deleteByName('MD_PDF_CGV') 
            || !Configuration::deleteByName('MD_CGV_INVOICE') 
            || !Configuration::deleteByName('MD_CGV_INVOICE_WITHDRAWAL') 
            || !Configuration::deleteByName('MD_CGV_WITHDRAWALFORM'))
            return false;

        if (!Db::getInstance()->execute('DROP TABLE IF EXISTS '._DB_PREFIX_.'mdtossend'))
            return false;

        if (version_compare(_PS_VERSION_, 1.5, '>'))
            if (!Db::getInstance()->execute('DROP TABLE IF EXISTS '._DB_PREFIX_.'mdtossend_history'))
                return false;
        
        return true;
    }
    public function hookActionValidateOrder($params)
    {
        // if ((Configuration::get('MD_CGV_INVOICE') == 0) || (version_compare(_PS_VERSION_, 1.4, '>=') && version_compare(_PS_VERSION_, 1.5, '<')))
        if (version_compare(_PS_VERSION_, 1.4, '>=') && version_compare(_PS_VERSION_, 1.5, '<'))
        {
            $iso = Language::getIsoById((int)$params['order']->id_lang);
            $mail_iso = $iso;
            $pdf = '';
            if (version_compare(_PS_VERSION_, 1.5, '>'))
            {
                $id_shop = $this->context->shop->id;
                $pdf = dirname(__FILE__).'/pdf/cgv_'.$iso.'_'.$id_shop.'.pdf';
                if (!is_file($pdf))
                {
                    $iso = Language::getIsoById((int)Configuration::get('PS_LANG_DEFAULT'));
                    $pdf = dirname(__FILE__).'/pdf/cgv_'.$iso.'_'.$id_shop.'.pdf';
                }
            }
            else
            {
                $pdf = dirname(__FILE__).'/pdf/cgv_'.$iso.'.pdf';
                if (!is_file($pdf))
                {
                    $iso = Language::getIsoById((int)Configuration::get('PS_LANG_DEFAULT'));
                    $pdf = dirname(__FILE__).'/pdf/cgv_'.$iso.'.pdf';
                }
            }
            if (!in_array($mail_iso, array('fr', 'en')))
                $mail_iso = Language::getIsoById((int)Configuration::get('PS_LANG_DEFAULT'));
            if (!in_array($mail_iso, array('fr', 'en')))
                $mail_iso = 'en';
            if (is_file($pdf) && $mail_iso)
            {
                $pdf = array('content' => Tools::file_get_contents($pdf),
                    'name' => 'cgv.pdf',
                    'mime' => 'application/pdf');
                Mail::Send(Language::getIdByIso($mail_iso),
                    'conditions',
                    $this->l('TOS for our shop', false, (int)Language::getIdByIso($mail_iso)),
                    array(),
                    pSQL($params['customer']->email),
                    null,
                    null,
                    null,
                    $pdf,
                    null,
                    dirname(__FILE__).'/mails/');
            }
            if (Configuration::get('MD_CGV_INVOICE_WITHDRAWAL') == 1 && $file = Configuration::get('MD_CGV_WITHDRAWALFORM'))
            {
                $pdf = dirname(__FILE__).'/form/'.$file;
                if (is_file($pdf) && $mail_iso)
                {
                    $pdf = array('content' => Tools::file_get_contents($pdf),
                        'name' => 'withdrawal_form.pdf',
                        'mime' => 'application/pdf');
                    Mail::Send(Language::getIdByIso($mail_iso),
                        'formulaire',
                        $this->l('Withdrawal form'),
                        array(),
                        pSQL($params['customer']->email),
                        pSQL($params['customer']->firstname).' '.pSQL($params['customer']->lastname),
                        null,
                        null,
                        $pdf,
                        null,
                        dirname(__FILE__).'/mails/');
                }
            }
        }
        return true;
    }
    /*Hook to Add Extra Content into the PDF Invoice
    Add in V1.1*/
    public function hookDisplayPDFInvoice($params)
    {
        if ((Configuration::get('MD_CGV_INVOICE') == 1) && (version_compare(_PS_VERSION_, 1.5, '>')))
        {
            $order_details = Db::getInstance()->getRow('select id_lang,date_add FROM '._DB_PREFIX_.'orders WHERE id_order = '.$params['object']->id_order);
            $id_lang = $order_details['id_lang'];
            $date_order = $order_details['date_add'];
            $cms = Db::getInstance()->getRow('SELECT content,meta_title FROM '._DB_PREFIX_.'mdtossend_history
            WHERE id_cms ='.Configuration::get('MD_PDF_CGV').'
            AND id_lang = '.$id_lang.' AND \''.$date_order.'\' >= date_add ORDER BY date_add DESC ');
            $title_cms = $cms['meta_title'];
            $content_cms = $cms['content'];
            //Si title_cms ou content_cms ne renvoie rien on ne rajoute rien au PDF. Par exemple si une commande a été passée avant le premier historique.
            if ($title_cms || $content_cms)
                return '<tcpdf method="AddPage"/><br pagebreak="true"><div align="center"><h1>'.$title_cms.'</h1></div>'.$content_cms;
        }
    }
    public function hookNewOrder($params)
    {
        return $this->hookActionValidateOrder($params);
    }
    public function getContent()
    {
        $html = $this->addCSSJS();
        $html .= $this->postProcess();
        $html .= '<div id="md"'.(version_compare(_PS_VERSION_, 1.5, '<') ?  'style="min-height: 250px !important;"' : ' ' ).'>
        <h2 style="margin-left:30px"><img src="'.__PS_BASE_URI__.'modules/mdtossend/views/img/mdweb.gif"/>'.$this->displayName.'</h2>';
        $html .= '<ul id="tabs">
                            <li><a href="#settings" data-toggle="tab">'.$this->l('Settings').'</a></li>
                            <li><a href="#history" data-toggle="tab">'.$this->l('History').'</a></li>
                        </ul>';
        $html .= '<div id="contenus-onglets"><div id="settings">'.$this->displayForm().'</div>';
        $html .= '<div id="history">'.$this->history().'</div></div>';
        $html .= '<div id="md_footer"><p><a href="http://addons.prestashop.com/fr/90_mdweb" target="_blank">'.$this->l('Our Shop').'</a></p>
                        </div>';
        $html .= '</div>';
        return $html;
    }
    public function hookActionObjectCmsUpdateAfter($params)
    {
        if (Configuration::get('MD_PDF_CGV') == $params['object']->id)
            $this->generatePDFDispatcher( $params['object']->id );
    }
    private function generatePDFDispatcher($id_cms)
    {
        if (version_compare(_PS_VERSION_, 1.5, '>'))
        {
            $this->generatePDF($id_cms);
            $sql = 'SELECT meta_title,content, id_lang FROM '._DB_PREFIX_.'cms_lang WHERE id_cms ='.$id_cms;
            $content_cms = Db::getInstance()->executeS($sql);
            foreach ($content_cms as $cms)
            {
                $meta_title = addslashes($cms['meta_title']);
                $content = addslashes($cms['content']);
                if (version_compare(_PS_VERSION_, 1.7, '>='))
                {
                    $sql = 'INSERT INTO '._DB_PREFIX_.'mdtossend_history (id_cms, id_lang,meta_title,content) VALUES
                    ('.(int)$id_cms.','.(int)$cms['id_lang'].', \''.pSQL($meta_title).'\', \''.pSQL($content, true).'\');';
                }
                else
                {
                    $sql = 'INSERT INTO '._DB_PREFIX_.'mdtossend_history (id_cms, id_lang,meta_title,content) VALUES
                    ('.(int)$id_cms.','.(int)$cms['id_lang'].', \''.pSQL($meta_title).'\', \''.pSQL($content).'\');';
                }
                Db::getInstance()->execute($sql);
            }
        }
        if (version_compare(_PS_VERSION_, 1.4, '>=') && version_compare(_PS_VERSION_, 1.5, '<'))
            return $this->generatePDF14($id_cms);
    }
    private function postProcess()
    {
        $post = '';
        //CMS ID
        if (Tools::isSubmit('submitSettings') && ($gai = Tools::getValue('chooseID')))
        {
            Configuration::updateValue('MD_PDF_CGV', $gai);
            $success = $this->generatePDFDispatcher($gai);
            if ($success == 'ok' || $success == '')
            {
                $post .= '
                <div class="conf confirm width4" style="margin-left: auto;margin-right: auto;">
                    '.$this->l('Settings updated').'
                </div>';
            }
            else
            {
                $post .= '
                <div class="error width4" style="margin-left: auto;margin-right: auto;">
                    '.$success.'
                </div>';
            }
        }
        //Check option for PDF Invoice
        if (Tools::isSubmit('submitSettings') && (Tools::getValue('invoice')))
            Configuration::updateValue('MD_CGV_INVOICE', Tools::getValue('invoice'));
        elseif (Tools::isSubmit('submitSettings') && (Tools::getValue('invoice') == 0))
            Configuration::updateValue('MD_CGV_INVOICE', Tools::getValue('invoice'));

        //Check option for withdrawal Invoice
        if (Tools::isSubmit('submitSettings') && (Tools::getValue('invoice_withdrawal')))
            Configuration::updateValue('MD_CGV_INVOICE_WITHDRAWAL', Tools::getValue('invoice_withdrawal'));
        elseif (Tools::isSubmit('submitSettings') && (Tools::getValue('invoice_withdrawal') == 0))
            Configuration::updateValue('MD_CGV_INVOICE_WITHDRAWAL', Tools::getValue('invoice_withdrawal'));

        //Withdrawal form upload
        if (Tools::isSubmit('submitSettings') && $_FILES['withdrawalform']['error'] === 0)
        {
            $finfo = finfo_open(FILEINFO_MIME_TYPE);
            $mime = finfo_file($finfo, $_FILES['withdrawalform']['tmp_name']);
            if ($mime == 'application/pdf')
            {
                $uploaddir = _PS_ROOT_DIR_.'/modules/mdtossend/form/';
                $uploadfile = $uploaddir.basename($_FILES['withdrawalform']['name']);
                if (move_uploaded_file($_FILES['withdrawalform']['tmp_name'], $uploadfile))
                    Configuration::updateValue('MD_CGV_WITHDRAWALFORM', $_FILES['withdrawalform']['name']);
                else
                {
                    $post .= '<div class="error width4" style="margin-left: auto;margin-right: auto;">
                    '.$this->l('Directory is not writable. Please check the folder permissions: ').$uploaddir.'</div>';
                }
            }
            else
                $post .= '<div class="error width4" style="margin-left: auto;margin-right: auto;">'.$this->l('Upload a PDF File').'</div>';
        }
        return $post;
    }
    private function generatePDF14($id_cms)
    {
        include_once( _PS_ROOT_DIR_.'/modules/mdtossend/tcpdf/tcpdf.php');
        $directory = _PS_ROOT_DIR_.'/modules/mdtossend/pdf/';
        if ($id_cms != null)
        {
            $sql = 'SELECT content, cms.id_lang FROM '._DB_PREFIX_.'cms_lang cms INNER JOIN '._DB_PREFIX_.'lang l on cms.id_lang = l.id_lang
            WHERE cms.id_cms ='.$id_cms.' AND l.active = 1';
            $content_cms = Db::getInstance()->executeS($sql);
            foreach ($content_cms as $cms)
            {
                $pdf = new TCPDF('P', 'mm', 'A4', true, 'UTF-8', false, false);
                $pdf->setHeaderData('', 0, date('d/m/Y - H:i:s').' '.Configuration::get('PS_SHOP_NAME'), null, null);
                $pdf->SetHeaderMargin(2);
                $pdf->SetFooterMargin(8);
                $pdf->setMargins(10, 40, 10);
                $pdf->SetAutoPageBreak(true, PDF_MARGIN_BOTTOM);
                $pdf->AddPage();
                $pdf->writeHTML($cms['content'], true, false, true, false, '');
                $code_iso = Language::getIsoById($cms['id_lang']);
                if (is_writable($directory))
                {
                    $filename = 'cgv_'.$code_iso.'_'.date('dmY_His').'.pdf';
                    $pdf->Output($directory.$filename, 'F');
                    $insert_pdf = 'INSERT INTO '._DB_PREFIX_.'mdtossend (filename,id_lang) VALUES (\''.pSQL($filename).'\','.(int)$cms['id_lang'].');';
                    if (!Db::getInstance()->execute($insert_pdf))
                        return $this->l('Could not insert in the database');
                    $filename = 'cgv_'.$code_iso.'.pdf';
                    $pdf->Output($directory.$filename, 'F');
                }
                else
                    return $this->l('Directory is not writable. Please check the folder permissions: ').$directory;
            }
        }
        return 'ok';
    }
    private function generatePDF($id_cms)
    {
        $directory = _PS_ROOT_DIR_.'/modules/mdtossend/pdf/';
        if ($id_cms != null)
        {
            $sql = 'SELECT content, cms.id_lang FROM '._DB_PREFIX_.'cms_lang cms INNER JOIN '._DB_PREFIX_.'lang l on cms.id_lang = l.id_lang
            WHERE cms.id_cms ='.$id_cms.' AND l.active = 1';
            $content_cms = Db::getInstance()->executeS($sql);
            foreach ($content_cms as $cms)
            {
                $pdf = new PDFGenerator();
                $contenu = htmlentities($cms['content'], null, 'utf-8');
                $contenu = str_replace(utf8_encode('&ensp;'), '', $contenu);
                $contenu = $pdf->unhtmlentities($contenu);
                $pdf->createHeader(date('d/m/Y - H:i:s').' '.$this->context->shop->name);
                $pdf->createContent($contenu);
                $pdf->writePage();
                $code_iso = Language::getIsoById($cms['id_lang']);
                $id_shop = $this->context->shop->id;
                if (is_writable($directory))
                {
                    $filename = 'cgv_'.$code_iso.'_'.$id_shop.'_'.date('Ymd_His').'.pdf';
                    $pdf->Output($directory.$filename, 'F');
                    $insert_pdf = 'INSERT INTO '._DB_PREFIX_.'mdtossend (filename,id_lang) VALUES (\''.pSQL($filename).'\','.(int)$cms['id_lang'].');';
                    if (!Db::getInstance()->execute($insert_pdf))
                        return $this->l('Could not insert in the database');
                    $filename = 'cgv_'.$code_iso.'_'.$id_shop.'.pdf';
                    $pdf->Output($directory.$filename, 'F');
                }
                else
                    return $this->l('Directory is not writable. Please check the folder permissions: ').$directory;
            }
        }
        return 'ok';
    }
    public function history()
    {
        $history = '<table id="historyTable">';
        $history .= '<thead><tr><th>'.$this->l('Filename').'</th><th>'.$this->l('Language').'</th>
        <th>'.$this->l('Date / Time').'</th><th>'.$this->l('Remove').'</th></tr></thead>';
        $sql = 'SELECT filename, id_lang,datetime FROM '._DB_PREFIX_.'mdtossend';
        $history_pdf = Db::getInstance()->executeS($sql);
        foreach ($history_pdf as $file)
        {
            $lang = Language::getLanguage($file['id_lang']);
            $history .= '<tr id="'.$file['filename'].'"><td><a href="/modules/mdtossend/pdf/'.$file['filename'].'" >&nbsp;'.$file['filename'].'<a/></td>';
            $history .= '<td>'.$lang['name'].'</td><td>'.$file['datetime'].'</td>';
            $history .= '<td><input class="css-checkbox" type="checkbox" name="'.$file['filename'].'" id="'.Tools::substr($file['filename'], 0, -4).'"
            value="'.$file['filename'].'"><label for="'.Tools::substr($file['filename'], 0, -4).'" class="css-label"></label></td></tr>';
        }
        $history .= '</table>';
        return $history;
    }
    private function addCSSJS()
    {
            return '
                    <link type="text/css" rel="stylesheet" href="'.__PS_BASE_URI__.'modules/mdtossend/views/css/style.css"/>
                    <link type="text/css" rel="stylesheet" href="'.__PS_BASE_URI__.'modules/mdtossend/views/css/jquery.dataTables.css"/>
                    <script src="'.__PS_BASE_URI__.'modules/mdtossend/views/js/jquery.dataTables.min.js"></script>
                    <script src="'.__PS_BASE_URI__.'modules/mdtossend/views/js/jquery.tabs-min.js"></script>
                    <script src="'.__PS_BASE_URI__.'modules/mdtossend/views/js/removePDF.js"></script>
                    <script>
                        $(document).ready(function($) {
                           $(\'#md\').tabs();
                        });
                    </script>
                    <script type="text/javascript">
                        $(document).ready(function() {
                            $(\'#historyTable\').dataTable();
                        } );</script>';
    }
    private function displayForm()
    {
        //CMS choose
        $all_cms = CMS::getCMSPages($this->context->employee->id_lang);
        $default = Configuration::get('MD_PDF_CGV');
        $default = (empty($default)) ? 'selected' : '';
        $form = '<form enctype="multipart/form-data" action="'.$_SERVER['REQUEST_URI'].'" method="post">
                <label>'.$this->l('Select your CMS').'</label>
                <select name="chooseID"><option value="0" disabled="disabled" '.$default.'>'.$this->l('Choose ...').'</option>';
        foreach ($all_cms as $cmspage)
        {
            $select = ($cmspage['id_cms'] == Configuration::get('MD_PDF_CGV')) ? 'selected' : '';
            $form .= '<option value="'.$cmspage['id_cms'].'" '.$select.'>'.$cmspage['meta_title'].'</option>';
        }
        $form .= '</select><p class="help-block"'.(version_compare(_PS_VERSION_, 1.5, '<') ?  'style="margin-left: 250px !important;"' :  ' ' ).'>
        '.$this->l('Choose the CMS page which correspond to your Terms of Sale').'</p>
        <!--<input type="submit"  name="submitID" value="'.$this->l('Select').'" class="button" />-->';
        //TOS to PDF invoice
        if (version_compare(_PS_VERSION_, 1.5, '>'))
        {
            $form .= '<label>'.$this->l('Add TOS to PDF invoice').'</label>
            <input class="radio" type="radio" name="invoice" id="invoice_on" value="1"
            '.(Tools::getValue('invoice', Configuration::get('MD_CGV_INVOICE')) ? 'checked="checked" ' : '').'/>
            <label class="t" for="invoice_on">'.$this->l('Yes').'</label>
            <input class="radio" type="radio" name="invoice" id="invoice_off" value="0"
            '.(!Tools::getValue('invoice', Configuration::get('MD_CGV_INVOICE')) ? 'checked="checked" ' : '').'/>
            <label class="t" for="invoice_off">'.$this->l('No').'</label><br>
            <p class="help-block">'.$this->l('Add your Terms of Sale after the PDF Invoice instead of a new mail').'</p>';
        }
        //Withdrawal form
        $form .= '<label>'.$this->l('Send Withdrawal form').'</label><input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
        <input name="withdrawalform" type="file" />';
        if ($file = Configuration::get('MD_CGV_WITHDRAWALFORM'))
            $form .= '<p class="help-block"'.(version_compare(_PS_VERSION_, 1.5, '<') ?  'style="margin-left: 250px !important;"' :  ' ' ).'>
        '.$this->l('Current withdrawal form').': <a href="http://'.$_SERVER['HTTP_HOST'].'/modules/mdtossend/form/'.$file.'">'.$file.'</a></p>';
        else
        {
            $form .= '<p class="help-block"'.(version_compare(_PS_VERSION_, 1.5, '<') ?  'style="margin-left: 250px !important;"' :  ' ' ).'>
            '.$this->l('No withdrawal form').'</p>';
        }
        $form .= '<label>'.$this->l('Send the Withdrawal form').'</label>
            <input class="radio" type="radio" name="invoice_withdrawal" id="invoice_withdrawal_on" value="1"
            '.(Tools::getValue('invoice_withdrawal', Configuration::get('MD_CGV_INVOICE_WITHDRAWAL')) ? 'checked="checked" ' : '').'/>
            <label class="t" for="invoice_withdrawal_on">'.$this->l('Yes').'</label>
            <input class="radio" type="radio" name="invoice_withdrawal" id="invoice_withdrawal_off" value="0"
            '.(!Tools::getValue('invoice_withdrawal', Configuration::get('MD_CGV_INVOICE_WITHDRAWAL')) ? 'checked="checked" ' : '').'/>
            <label class="t" for="invoice_withdrawal_off">'.$this->l('No').'</label><br>
            <p class="help-block"'.(version_compare(_PS_VERSION_, 1.5, '<') ?  'style="margin-left: 250px !important;"' :  ' ' ).'>
            '.$this->l('Send the withdrawal form with the PDF invoice').'</p>';
        $form .= '<input id="bigbutton" type="submit" name="submitSettings" value="'.$this->l('Save').'"  /></form>';
        return $form;
    }
}