<?php
/***************************************************************************
 *  Copyright (C) 2003-2008 Polytechnique.org                              *
 *  http://opensource.polytechnique.org/                                   *
 *                                                                         *
 *  This program is free software; you can redistribute it and/or modify   *
 *  it under the terms of the GNU General Public License as published by   *
 *  the Free Software Foundation; either version 2 of the License, or      *
 *  (at your option) any later version.                                    *
 *                                                                         *
 *  This program is distributed in the hope that it will be useful,        *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 *  GNU General Public License for more details.                           *
 *                                                                         *
 *  You should have received a copy of the GNU General Public License      *
 *  along with this program; if not, write to the Free Software            *
 *  Foundation, Inc.,                                                      *
 *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
 ***************************************************************************/

/* sort en affichant une erreur */
function cb_erreur($text) {
    $mymail = new PlMailer();
    $mymail->addTo($globals->money->email);
    $mymail->setFrom("webmaster@" . $globals->mail->domain);
    $mymail->setSubject("erreur lors d'un télépaiement (CyberPaiement)");
    $mymail->setTxtBody("\n\n".var_export($_REQUEST,true));
    $mymail->send();
    exit;
}

/* sort en affichant une erreur */
function paypal_erreur($text, $send=true)
{
    global $page, $erreur;
    if ($erreur) return;
    $erreur = $text;
    if (!$send) return;

    $mymail = new PlMailer();
    $mymail->addTo($globals->money->email);
    $mymail->setFrom("webmaster@" . $globals->mail->domain);
    $mymail->setSubject("erreur lors d'un télépaiement (PayPal)");
    $mymail->setTxtBody("\n\n".var_export($_REQUEST,true));
    $mymail->send();

    $page->trig($text);
}

/* http://fr.wikipedia.org/wiki/Formule_de_Luhn */
function luhn($nombre) {
    $s = strrev($nombre);
    $sum = 0;
    for ($i = 0; $i < strlen($s); $i++) {
	$dgt = $s{$i};
        $sum += ($i % 2) ? (2*$dgt) % 9 : $dgt;
    }
    return $sum % 10;
}

/* calcule la clé d'acceptation a partir de 5 champs */
function cle_accept($d1,$d2,$d3,$d4,$d5)
{
    $m1 = luhn($d1.$d5);
    $m2 = luhn($d2.$d5);
    $m3 = luhn($d3.$d5);
    $m4 = luhn($d4.$d5);
    $n = $m1 + $m2 + $m3 + $m4;
    $alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    return $alpha{$n-1}.$m1.$m2.$m3.$m4;
}

/* decode the comment */
function comment_decode($comment) {
    $comment = urldecode($comment);
    if (is_utf8($comment)) {
        return $comment;
    } else {
        return utf8_encode($comment);
    }
}


class PaymentModule extends PLModule
{
    function handlers()
    {
        return array(
            'payment'               => $this->make_hook('payment', AUTH_MDP),
            'payment/cyber_return'  => $this->make_hook('cyber_return',  AUTH_PUBLIC),
            'payment/paypal_return' => $this->make_hook('paypal_return',  AUTH_PUBLIC),
            '%grp/paiement'              => $this->make_hook('xnet_payment', AUTH_MDP),
            '%grp/payment'               => $this->make_hook('xnet_payment', AUTH_MDP),
            '%grp/payment/cyber_return'  => $this->make_hook('cyber_return', AUTH_PUBLIC),
            '%grp/payment/paypal_return' => $this->make_hook('paypal_return', AUTH_PUBLIC),
            'admin/payments'        => $this->make_hook('admin', AUTH_MDP, 'admin'),

        );
    }

    function handler_payment(&$page, $ref = -1)
    {
        global $globals;

        require_once 'profil.func.inc.php' ;
        require_once dirname(__FILE__).'/payment/money.inc.php' ;

        if (!empty($GLOBALS['IS_XNET_SITE'])) {
            if (!$globals->asso('id')) {
                return PL_NOT_FOUND;
            }
            $res = XDB::query("SELECT asso_id
                                 FROM paiement.paiements
                                WHERE asso_id = {?} AND id = {?}",
                              $globals->asso('id'), $ref);
            if (!$res->numRows()) {
                return PL_FORBIDDEN;
            }
        }
        $page->changeTpl('payment/index.tpl');
        $page->assign('xorg_title','Polytechnique.org - Télépaiements');

        // initialisation
        $op   = Env::v('op', 'select');
        $meth = new PayMethod(Env::i('methode', -1));
        $pay  = new Payment($ref);

        if($pay->flags->hasflag('old')){
            $page->trig("La transaction selectionnée est périmée.");
            $pay = new Payment();
        }
        $val = Env::v('montant') != 0 ? Env::v('montant') : $pay->montant_def;

        if (($e = $pay->check($val)) !== true) {
            $page->trig($e);
        }

        if ($op=='submit') {
            $pay->init($val, $meth);
            $pay->prepareform($pay);
        } else {
            $res = XDB::iterator("SELECT  timestamp, montant
                                    FROM  paiement.transactions
                                   WHERE  uid = {?} AND ref = {?}
                                ORDER BY  timestamp DESC",
                                 S::v('uid', -1), $ref);

            if ($res->total()) $page->assign('transactions', $res);
        }

        $val = floor($val).".".substr(floor(($val - floor($val))*100+100),1);
        $page->assign('montant',$val);
        $page->assign('comment',Env::v('comment'));

        $page->assign('meth', $meth);
        $page->assign('pay',  $pay);
        $page->assign('evtlink', $pay->event());

        $page->assign('prefix', $globals->money->mpay_tprefix);
    }

    function handler_cyber_return(&$page, $uid = null)
    {
        /* reference banque (numero de transaction) */
        $champ901 = Env::s('CHAMP901');
        /* cle d'acceptation */
        $champ905 = Env::s('CHAMP905');
        /* code retour */
        $champ906 = Env::s('CHAMP906');
        /* email renvoye par la banque */
        $champ104 = Env::s('CHAMP104');
        /* reference complete de la commande */
        $champ200 = Env::s('CHAMP200');
        /* montant de la transaction */
        $champ201 = Env::s('CHAMP201');
        /* devise */
        $champ202 = Env::s('CHAMP202');
        $montant = "$champ201 $champ202";

        /* on extrait les informations sur l'utilisateur */
        $res = XDB::query("
            SELECT  a.prenom,a.nom,a.promo,l.alias,FIND_IN_SET('femme', a.flags)
              FROM  auth_user_md5 AS a
        INNER JOIN  aliases       AS l ON (a.user_id=l.id AND type!='homonyme')
             WHERE  a.user_id={?}", $uid);
        if (!list($prenom,$nom,$promo,$forlife,$femme) = $res->fetchOneRow()) {
            cb_erreur("uid invalide");
        }


        /* on extrait la reference de la commande */
        if (!ereg('-xorg-([0-9]+)$',$champ200,$matches)) {
            cb_erreur("référence de commande invalide");
        }

        echo ($ref = $matches[1]);
        $res = XDB::query("SELECT  mail,text,confirmation
                             FROM  paiement.paiements
                            WHERE  id={?}", $ref);
        if (!list($conf_mail,$conf_title,$conf_text) = $res->fetchOneRow()) {
            cb_erreur("référence de commande inconnue");
        }

        /* on extrait le code de retour */
        if ($champ906 != "0000") {
            $res = XDB::query("SELECT  rcb.text,c.id,c.text
                                 FROM  paiement.codeRCB AS rcb
                            LEFT JOIN  paiement.codeC   AS c ON rcb.codeC=c.id
                                WHERE  rcb.id='$champ906'");
            if (list($rcb_text, $c_id, $c_text) = $res->fetchOneRow()) {
                cb_erreur("erreur lors du paiement : $c_text ($c_id)");
            } else{
                cb_erreur("erreur inconnue lors du paiement");
            }
        }

        /* on fait l'insertion en base de donnees */
        XDB::execute("INSERT INTO  paiement.transactions (id,uid,ref,fullref,montant,cle,comment)
                           VALUES  ({?},{?},{?},{?},{?},{?},{?})",
                     $champ901, $uid, $ref, $champ200, $montant, $champ905,Env::v('comment'));

        /* on genere le mail de confirmation */
        $conf_text = str_replace("<prenom>",$prenom,$conf_text);
        $conf_text = str_replace("<nom>",$nom,$conf_text);
        $conf_text = str_replace("<promo>",$promo,$conf_text);
        $conf_text = str_replace("<montant>",$montant,$conf_text);
        $conf_text = str_replace("<salutation>",$femme ? "Chère" : "Cher",$conf_text);
        $conf_text = str_replace("<cher>",$femme ? "Chère" : "Cher",$conf_text);

        global $globals;
        $mymail = new PlMailer();
        $mymail->setFrom($conf_mail);
        $mymail->addTo("\"$prenom $nom\" <$forlife@" . $globals->mail->domain . '>');
        $mymail->addCc($conf_mail);
        $mymail->setSubject($conf_title);
        $mymail->setWikiBody($conf_text);
        $mymail->send(S::v('mail_fmt') == 'html');

        /* on envoie les details de la transaction à telepaiement@ */
        $mymail = new PlMailer();
        $mymail->setFrom("webmaster@" . $globals->mail->domain);
        $mymail->addTo($globals->money->email);
        $mymail->setSubject($conf_title);
        $msg = "utilisateur : $prenom $nom ($uid)\n".
               "mail : $forlife@polytechnique.org\n\n".
               "paiement : $conf_title ($conf_mail)\n".
               "reference : $champ200\n".
               "montant : $montant\n\n".
               "dump de REQUEST:\n".
               var_export($_REQUEST,true);
        $mymail->setTxtBody($msg);
        $mymail->send();
        exit;
    }

    function handler_paypal_return(&$page, $uid = null)
    {
        $page->changeTpl('payment/retour_paypal.tpl');

        /* reference banque (numero de transaction) */
        $no_transaction = Env::s('tx');
        /* token a renvoyer pour avoir plus d'information */
        $clef = Env::s('sig');
        /* code retour */
        $status = Env::s('st');
        /* raison */
        $reason = ($status == 'Pending')? Env::s('pending_reason'): Env::s('reason_code');
        /* reference complete de la commande */
        $fullref = Env::s('cm');
        /* montant de la transaction */
        $montant_nb = Env::s('amt');
        /* devise */
        $montant_dev = Env::s('cc');
        $montant = "$montant_nb $montant_dev";

        /* on extrait le code de retour */
        if ($status != "Completed") {
            if ($status)
                paypal_erreur("erreur lors du paiement : $status - $reason");
            else
                paypal_erreur("Paiement annulé", false);
        }

        /* on extrait les informations sur l'utilisateur */
        $res = XDB::query("
            SELECT  a.prenom,a.nom,a.promo,l.alias,FIND_IN_SET('femme', a.flags)
              FROM  auth_user_md5 AS a
        INNER JOIN  aliases       AS l ON (a.user_id=l.id AND type!='homonyme')
             WHERE  a.user_id={?}", $uid);
        if (!list($prenom,$nom,$promo,$forlife,$femme) = $res->fetchOneRow()) {
            paypal_erreur("uid invalide");
        }

        /* on extrait la reference de la commande */
        if (!ereg('-xorg-([0-9]+)$',$fullref,$matches)) {
            paypal_erreur("référence de commande invalide");
        }

        $ref = $matches[1];
        $res = XDB::query("SELECT  mail,text,confirmation
                             FROM  paiement.paiements
                            WHERE  id={?}", $ref);
        if (!list($conf_mail,$conf_title,$conf_text) = $res->fetchOneRow()) {
            paypal_erreur("référence de commande inconnue");
        }

        /* on fait l'insertion en base de donnees */
        XDB::execute("INSERT INTO  paiement.transactions (id,uid,ref,fullref,montant,cle,comment)
                           VALUES  ({?},{?},{?},{?},{?},{?},{?})",
                    $no_transaction, $uid, $ref, $fullref, $montant, $clef, Env::v('comment'));

        /* on genere le mail de confirmation */
        $conf_text = str_replace("<prenom>",$prenom,$conf_text);
        $conf_text = str_replace("<nom>",$nom,$conf_text);
        $conf_text = str_replace("<promo>",$promo,$conf_text);
        $conf_text = str_replace("<montant>",$montant,$conf_text);
        $conf_text = str_replace("<salutation>",$femme ? "Chère" : "Cher",$conf_text);
        $conf_text = str_replace("<cher>",$femme ? "Chère" : "Cher",$conf_text);

        global $globals;
        $mymail = new PlMailer();
        $mymail->setFrom($conf_mail);
        $mymail->addTo("\"$prenom $nom\" <$forlife@" . $globals->mail->domain . '>');
        $mymail->addCc($conf_mail);
        $mymail->setSubject($conf_title);
        $mymail->setWikiBody($conf_text);
        $mymail->send(S::v('mail_fmt') == 'html');

        /* on envoie les details de la transaction à telepaiement@ */
        $mymail = new PlMailer();
        $mymail->setFrom("webmaster@" . $globals->mail->domain);
        $mymail->addTo($globals->money->email);
        $mymail->setSubject($conf_title);
        $msg = "utilisateur : $prenom $nom ($uid)\n".
               "mail : $forlife@polytechnique.org\n\n".
               "paiement : $conf_title ($conf_mail)\n".
               "reference : $no_transaction\n".
               "montant : $montant\n\n".
               "dump de REQUEST:\n".
               var_export($_REQUEST,true);
        $mymail->setTxtBody($msg);
        $mymail->send();

        $page->assign('texte', $conf_text);
        $page->assign('erreur', $erreur);
    }

    function handler_xnet_payment(&$page, $pid = null)
    {
        global $globals;

        $perms = S::v('perms');
        if (!$perms->hasFlag('groupmember')) {
            if (is_null($pid)) {
                return PL_FORBIDDEN;
            }
            $res = XDB::query("SELECT  1
                                 FROM  groupex.evenements AS e
                           INNER JOIN  groupex.evenements_participants AS ep ON (ep.eid = e.eid AND uid = {?})
                                WHERE  e.paiement_id = {?} AND e.asso_id = {?}",
                              S::i('uid'), $pid, $globals->asso('id'));
            if ($res->numRows() == 0) {
                return PL_FORBIDDEN;
            }
        }

        if (!is_null($pid)) {
            return  $this->handler_payment($page, $pid);
        }
        $page->changeTpl('payment/xnet.tpl');

        $res = XDB::query(
                "SELECT  id, text, url
                   FROM  {$globals->money->mpay_tprefix}paiements
                  WHERE  asso_id = {?} AND NOT FIND_IN_SET('old', flags)
               ORDER BY  id DESC", $globals->asso('id'));
        $tit = $res->fetchAllAssoc();
        $page->assign('titres', $tit);

        $order = Env::v('order', 'timestamp');
        $orders = array('timestamp', 'nom', 'promo', 'montant', 'comment');
        if (!in_array($order, $orders)) {
            $order = 'timestamp';
        } elseif ($order == 'comment') {
            $order = 't.comment';
        }
        $inv_order = Env::v('order_inv', 0);
        $page->assign('order', $order);
        $page->assign('order_inv', !$inv_order);

        if ($order == 'timestamp') {
            $inv_order = !$inv_order;
        }

        if ($inv_order) {
            $inv_order = ' DESC';
        } else {
            $inv_order = '';
        }
        if ($order == 'montant') {
            $order = 'LENGTH(montant) '.$inv_order.', montant';
        }

        $orderby = 'ORDER BY '.$order.$inv_order;
        if ($order != 'nom') {
            $orderby .= ', nom'; $inv_order = '';
        }
        $orderby .= ', prenom'.$inv_order;
        if ($order != 'timestamp') {
            $orderby .= ', timestamp DESC';
        }

        $trans = array();
        $event = array();
        foreach($tit as $foo) {
            $pid = $foo['id'];
            if (may_update()) {
                $res = XDB::query("SELECT  IF(u.nom_usage<>'', u.nom_usage, u.nom) AS nom,
                                           u.prenom, u.promo, a.alias, timestamp AS `date`, t.comment, montant
                                     FROM  {$globals->money->mpay_tprefix}transactions AS t
                               INNER JOIN  auth_user_md5  AS u ON ( t.uid = u.user_id )
                               INNER JOIN  aliases        AS a ON ( t.uid = a.id AND a.type='a_vie' )
                                    WHERE  ref = {?} ".$orderby, $pid);
                    $trans[$pid] = $res->fetchAllAssoc();
                    $sum = 0;
                    foreach ($trans[$pid] as $i => $t) {
                        $sum += strtr(substr($t['montant'], 0, strpos($t['montant'], 'EUR')), ',', '.');
                        $trans[$pid][$i]['montant'] = str_replace('EUR', '€', $t['montant']);
                    }
                    $trans[$pid][] = array('nom' => 'somme totale',
                                           'montant' => strtr($sum, '.', ',').' €');
            }
            $res = XDB::iterRow("SELECT e.eid, e.short_name, e.intitule, ep.nb, ei.montant, ep.paid
                                   FROM groupex.evenements AS e
                              LEFT JOIN groupex.evenements_participants AS ep ON (ep.eid = e.eid AND uid = {?})
                             INNER JOIN groupex.evenements_items AS ei ON (ep.eid = ei.eid AND ep.item_id = ei.item_id)
                                  WHERE e.paiement_id = {?}",
                                 S::v('uid'), $pid);
            $event[$pid] = array();
            $event[$pid]['paid'] = 0;
            if ($res->total()) {
                $event[$pid]['topay'] = 0;
                while(list($eid, $shortname, $title, $nb, $montant, $paid) = $res->next()) {
                    $event[$pid]['topay']     += ($nb * $montant);
                    $event[$pid]['eid']       = $eid;
                    $event[$pid]['shortname'] = $shortname;
                    $event[$pid]['title']     = $title;
                    $event[$pid]['ins']       = !is_null($nb);
                    $event[$pid]['paid']      = $paid;
                }
            }
            $res = XDB::query("SELECT montant
                                 FROM {$globals->money->mpay_tprefix}transactions AS t
                                WHERE ref = {?} AND uid = {?}", $pid, S::v('uid'));
            $montants = $res->fetchColumn();

            foreach ($montants as $m) {
                $p = strtr(substr($m, 0, strpos($m, 'EUR')), ',', '.');
                $event[$pid]['paid'] += trim($p);
            }
        }
        $page->register_modifier('decode_comment', 'decode_comment');
        $page->assign('trans', $trans);
        $page->assign('event', $event);
    }

    function handler_admin(&$page, $action = 'list', $id = null) {
        $page->assign('xorg_title','Polytechnique.org - Administration - Paiements');
        $page->assign('title', 'Gestion des télépaiements');
        $table_editor = new PLTableEditor('admin/payments','paiement.paiements','id');
        $table_editor->add_join_table('paiement.transactions','ref',true);
        $table_editor->add_sort_field('flags');
        $table_editor->add_sort_field('id', true, true);
        $table_editor->on_delete("UPDATE paiement.paiements SET flags = 'old' WHERE id = {?}", "Le paiement a été archivé");
        $table_editor->describe('text','intitulé',true);
        $table_editor->describe('url','site web',false);
        $table_editor->describe('montant_def','montant par défaut',false);
        $table_editor->describe('montant_min','montant minimum',false);
        $table_editor->describe('montant_max','montant maximum',false);
        $table_editor->describe('mail','email contact',true);
        $table_editor->describe('confirmation','message confirmation',false);
        $table_editor->apply($page, $action, $id);
    }
}

// vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
?>