#!/usr/bin/php
<?php
/*
 * Copyright (C) 2005		Rodolphe Quiedeville <rodolphe@quiedeville.org>
 * Copyright (C) 2005-2013	Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2013		Juanjo Menent <jmenent@2byte.es>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

/**
 *      \file       scripts/invoices/email_unpaid_invoices_to_customers.php
 *      \ingroup    facture
 *      \brief      Script to send a mail to customers with unpaid invoices
 */

$sapi_type = php_sapi_name();
$script_file = basename(__FILE__);
$path=dirname(__FILE__).'/';

// Test si mode batch
$sapi_type = php_sapi_name();
if (substr($sapi_type, 0, 3) == 'cgi') {
    echo "Error: You are using PHP for CGI. To execute ".$script_file." from command line, you must use PHP for CLI mode.\n";
	exit(-1);
}

if (! isset($argv[2]) || ! $argv[2] || ! in_array($argv[1],array('test','confirm')) || ! in_array($argv[2],array('thirdparties','contacts')))
{
	print "Usage: $script_file (test|confirm) (thirdparties|contacts) [delay] [after]\n";
	print "\n";
	print "Send an email to customers to remind all unpaid customer invoices.\n";
	print "If you choose 'test' mode, no emails are sent.\n";
	print "If you add param delay (nb of days), only invoice with due date < today + delay are included.\n";
	print "If you add param after (nb of days), only invoice with due date >= today + delay are included.\n";
	exit(-1);
}
$mode=$argv[1];
$targettype=$argv[2];


require($path."../../htdocs/master.inc.php");
require_once (DOL_DOCUMENT_ROOT."/core/class/CMailFile.class.php");

$langs->load('main');

// Global variables
$version=DOL_VERSION;
$error=0;



/*
 * Main
 */

@set_time_limit(0);
print "***** ".$script_file." (".$version.") pid=".getmypid()." *****\n";
dol_syslog($script_file." launched with arg ".join(',',$argv));

$now=dol_now('tzserver');
$duration_value=isset($argv[3])?$argv[3]:'none';
$duration_value2=isset($argv[4])?$argv[4]:'none';

$error = 0;
print $script_file." launched with mode ".$mode." default lang=".$langs->defaultlang.(is_numeric($duration_value)?" delay=".$duration_value:"").(is_numeric($duration_value2)?" after=".$duration_value2:"")."\n";

if ($mode != 'confirm') $conf->global->MAIN_DISABLE_ALL_MAILS=1;

$sql = "SELECT f.facnumber, f.total_ttc, f.date_lim_reglement as due_date,";
$sql.= " s.rowid as sid, s.nom as name, s.email, s.default_lang";
if ($targettype == 'contacts') $sql.= ", sp.rowid as cid, sp.firstname as cfirstname, sp.lastname as clastname, sp.email as cemail";
$sql.= " FROM ".MAIN_DB_PREFIX."facture as f, ".MAIN_DB_PREFIX."societe as s";
if ($targettype == 'contacts') $sql.= ", ".MAIN_DB_PREFIX."socpeople as sp";
$sql.= " WHERE f.fk_statut = 1 AND f.paye = 0";
$sql.= " AND f.fk_soc = s.rowid";
if (is_numeric($duration_value2)) $sql.= " AND f.date_lim_reglement >= '".$db->idate(dol_time_plus_duree($now, $duration_value2, "d"))."'";
if (is_numeric($duration_value)) $sql.= " AND f.date_lim_reglement < '".$db->idate(dol_time_plus_duree($now, $duration_value, "d"))."'";
if ($targettype == 'contacts') $sql.= " AND s.rowid = sp.fk_soc";
$sql.= " ORDER BY";
if ($targettype == 'contacts') $sql.= " sp.email, sp.rowid,";
$sql.= " s.email ASC, s.rowid ASC, f.facnumber ASC";	// Order by email to allow one message per email

//print $sql;
$resql=$db->query($sql);
if ($resql)
{
    $num = $db->num_rows($resql);
    $i = 0;
    $oldemail = 'none'; $oldsid = 0; $oldcid = 0; $oldlang='';
    $total = 0; $foundtoprocess = 0;
    $trackthirdpartiessent = array();

	print "We found ".$num." couples (unpayed validated invoices-".$targettype.") qualified\n";
    dol_syslog("We found ".$num." couples (unpayed validated invoices-".$targettype.") qualified");
	$message='';

    if ($num)
    {
        while ($i < $num)
        {
            $obj = $db->fetch_object($resql);

            $newemail=empty($obj->cemail)?$obj->email:$obj->cemail;

            // Check if this record is a break after previous one
            $startbreak=false;
			if ($newemail <> $oldemail || $oldemail == 'none') $startbreak=true;
			if ($obj->sid && $obj->sid <> $oldsid) $startbreak=true;
			if ($obj->cid && $obj->cid <> $oldcid) $startbreak=true;

            if ($startbreak)
            {
                // Break onto sales representative (new email or cid)
                if (dol_strlen($oldemail) && $oldemail != 'none' && empty($trackthirdpartiessent[$oldsid.'|'.$oldemail]))
                {
                   	envoi_mail($mode,$oldemail,$message,$total,$oldlang,$oldtarget);
                   	$trackthirdpartiessent[$oldsid.'|'.$oldemail]='contact id '.$oldcid;
                }
                else
				{
                	if ($oldemail != 'none')
                	{
                		if (empty($trackthirdpartiessent[$oldsid.'|'.$oldemail])) print "- No email sent for '".$oldtarget."', total: ".$total."\n";
                		else print "- No email sent for '".$oldtarget."', total: ".$total." (already sent to ".$trackthirdpartiessent[$oldsid.'|'.$oldemail].")\n";
                	}
                }
                $oldemail = $newemail;
                $oldsid  = $obj->sid;
                $oldcid  = $obj->cid;
                $oldlang = $obj->lang;
                $oldtarget=(empty($obj->cfirstname) && empty($obj->clastname))?$obj->name:($obj->clastname." ".$obj->cfirstname);
                $message = '';
                $total   = 0;
                $foundtoprocess = 0;
                $target=(empty($obj->cfirstname) && empty($obj->clastname))?$obj->name:($obj->clastname." ".$obj->cfirstname);
                //if (empty($newemail)) print "Warning: Customer ".$target." has no email. Notice disabled.\n";
            }

            // Define line content
            $outputlangs=new Translate('',$conf);
            $outputlangs->setDefaultLang(empty($obj->default_lang)?$langs->defaultlang:$obj->default_lang);	// By default language of customer
            $outputlangs->load("bills");
            $outputlangs->load("main");

            if (dol_strlen($newemail))
            {
            	$message .= $outputlangs->trans("Invoice")." ".$obj->facnumber." : ".price($obj->total_ttc,0,$outputlangs,0,0,-1,$conf->currency)."\n";
            	dol_syslog("email_unpaid_invoices_to_customers.php: ".$newemail." ".$message);
            	$foundtoprocess++;
            }
            print "Unpaid invoice ".$obj->facnumber.", price ".price2num($obj->total_ttc).", due date ".dol_print_date($db->jdate($obj->due_date),'day').", customer id ".$obj->sid." ".$obj->name.", ".($obj->cid?"contact id ".$obj->cid." ".$obj->clastname." ".$obj->cfirstname.", ":"")."email ".$newemail.", lang ".$outputlangs->defaultlang.": ";
            if (dol_strlen($newemail)) print "qualified.";
            else print "disqualified (no email).";
            print "\n";

            unset($outputlangs);

            $total += $obj->total_ttc;

            $i++;
        }

        // Si il reste des envois en buffer
        if ($foundtoprocess)
        {
            if (dol_strlen($oldemail) && $oldemail != 'none' && empty($trackthirdpartiessent[$oldsid.'|'.$oldemail]))	// Break onto email (new email)
            {
       			envoi_mail($mode,$oldemail,$message,$total,$oldlang,$oldtarget);
       			$trackthirdpartiessent[$oldsid.'|'.$oldemail]='contact id '.$oldcid;
            }
            else
			{
            	if ($oldemail != 'none')
            	{
            		if (empty($trackthirdpartiessent[$oldsid.'|'.$oldemail])) print "- No email sent for '".$oldtarget."', total: ".$total."\n";
            		else print "- No email sent for '".$oldtarget."', total: ".$total." (already sent to ".$trackthirdpartiessent[$oldsid.'|'.$oldemail].")\n";
            	}
            }
        }
    }
    else
	{
        print "No unpaid invoices found\n";
    }

    exit(0);
}
else
{
    dol_print_error($db);
    dol_syslog("email_unpaid_invoices_to_customers.php: Error");

    exit(-1);
}


/**
 * 	Send email
 *
 * 	@param	string	$mode			Mode (test | confirm)
 *  @param	string	$oldemail		Target email
 * 	@param	string	$message		Message to send
 * 	@param	string	$total			Total amount of unpayed invoices
 *  @param	string	$userlang		Code lang to use for email output.
 *  @param	string	$oldtarget		Target name
 * 	@return	int						<0 if KO, >0 if OK
 */
function envoi_mail($mode,$oldemail,$message,$total,$userlang,$oldtarget)
{
    global $conf,$langs;

    if (getenv('DOL_FORCE_EMAIL_TO')) $oldemail=getenv('DOL_FORCE_EMAIL_TO');

    $newlangs=new Translate('',$conf);
    $newlangs->setDefaultLang(empty($userlang)?(empty($conf->global->MAIN_LANG_DEFAULT)?'auto':$conf->global->MAIN_LANG_DEFAULT):$userlang);
    $newlangs->load("main");
    $newlangs->load("bills");

    $subject = (empty($conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_SUBJECT)?$newlangs->trans("ListOfYourUnpaidInvoices"):$conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_SUBJECT);
    $sendto = $oldemail;
    $from = $conf->global->MAIN_MAIL_EMAIL_FROM;
    $errorsto = $conf->global->MAIN_MAIL_ERRORS_TO;
	$msgishtml = -1;

    print "- Send email to '".$oldtarget."' (".$oldemail."), total: ".$total."\n";
    dol_syslog("email_unpaid_invoices_to_customers.php: send mail to ".$oldemail);

    $usehtml=0;
    if (dol_textishtml($conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_FOOTER)) $usehtml+=1;
    if (dol_textishtml($conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_HEADER)) $usehtml+=1;

    $allmessage='';
    if (! empty($conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_HEADER))
    {
    	$allmessage.=$conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_HEADER;
    }
    else
    {
    	$allmessage.= "Dear customer".($usehtml?"<br>\n":"\n").($usehtml?"<br>\n":"\n");
    	$allmessage.= "Please, find a summary of the bills with pending payments from you.".($usehtml?"<br>\n":"\n").($usehtml?"<br>\n":"\n");
    	$allmessage.= "Note: This list contains only unpaid invoices.".($usehtml?"<br>\n":"\n");
    }
    $allmessage.= $message.($usehtml?"<br>\n":"\n");
    $allmessage.= $langs->trans("Total")." = ".price($total,0,$userlang,0,0,-1,$conf->currency).($usehtml?"<br>\n":"\n");
    if (! empty($conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_FOOTER))
    {
    	$allmessage.=$conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_FOOTER;
    	if (dol_textishtml($conf->global->SCRIPT_EMAIL_UNPAID_INVOICES_CUSTOMERS_FOOTER)) $usehtml+=1;
    }

    $mail = new CMailFile(
        $subject,
        $sendto,
        $from,
        $allmessage,
        array(),
        array(),
        array(),
        '',
        '',
        0,
        $msgishtml
    );

    $mail->errors_to = $errorsto;

    // Send or not email
    if ($mode == 'confirm')
    {
    	$result=$mail->sendfile();
    	if (! $result)
    	{
    		print "Error sending email ".$mail->error."\n";
    		dol_syslog("Error sending email ".$mail->error."\n");
    	}
    }
    else
    {
    	print "No email sent (test mode)\n";
    	dol_syslog("No email sent (test mode)");
    	$mail->dump_mail();
    	$result=1;
    }

    unset($newlangs);
    if ($result)
    {
        return 1;
    }
    else
    {
        return -1;
    }
}