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<?php
/* Copyright (C) 2005-2008 Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2005-2009 Regis Houssin        <regis.houssin@inodbox.com>
 * Copyright (C) 2013-2018 Philippe Grand       <philippe.grand@atoo-net.com>
 * Copyright (C) 2016      Alexandre Spangaro   <aspangaro@open-dsi.fr>
 *
 * 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/>.
 * or see http://www.gnu.org/
 */

/**
 *    	\file       htdocs/core/modules/supplier_invoice/mod_facture_fournisseur_cactus.php
 *		\ingroup    supplier invoice
 *		\brief      File containing class for the numbering module Cactus
 */

require_once DOL_DOCUMENT_ROOT .'/core/modules/supplier_invoice/modules_facturefournisseur.php';


/**
 *  Cactus Class of numbering models of suppliers invoices references
 */
class mod_facture_fournisseur_cactus extends ModeleNumRefSuppliersInvoices
{
    /**
     * Dolibarr version of the loaded document
     * @var string
     */
    public $version = 'dolibarr';		// 'development', 'experimental', 'dolibarr'

	/**
     * @var string Error code (or message)
     */
    public $error = '';

	/**
	 * @var string Nom du modele
	 * @deprecated
	 * @see name
	 */
	public $nom='Cactus';

	/**
	 * @var string model name
	 */
	public $name='Cactus';

	public $prefixinvoice='SI';

	public $prefixcreditnote='SA';

	public $prefixdeposit='SD';


    /**
     *  Return description of numbering model
     *
     *  @return     string      Text with description
     */
    public function info()
    {
        global $langs;
        $langs->load("bills");
        return $langs->trans("CactusNumRefModelDesc1", $this->prefixinvoice, $this->prefixcreditnote, $this->prefixdeposit);
    }


    /**
     *  Returns a numbering example
     *
     *  @return     string      Example
     */
    public function getExample()
    {
        return $this->prefixinvoice."1301-0001";
    }


	/**
	 * 	Tests if the numbers already in force in the database do not cause conflicts that would prevent this numbering.
	 *
	 *  @return     boolean     false if conflict, true if ok
	 */
	public function canBeActivated()
	{
		global $conf,$langs,$db;

		$langs->load("bills");

		// Check invoice num
		$siyymm=''; $max='';

		$posindice=8;
		$sql = "SELECT MAX(CAST(SUBSTRING(ref FROM ".$posindice.") AS SIGNED)) as max";
		$sql.= " FROM ".MAIN_DB_PREFIX."facture_fourn";
		$sql.= " WHERE ref LIKE '".$db->escape($this->prefixinvoice)."____-%'";
		$sql.= " AND entity = ".$conf->entity;
		$resql=$db->query($sql);
		if ($resql)
		{
			$row = $db->fetch_row($resql);
			if ($row) { $siyymm = substr($row[0], 0, 6); $max=$row[0]; }
		}
		if ($siyymm && ! preg_match('/'.$this->prefixinvoice.'[0-9][0-9][0-9][0-9]/i', $siyymm))
		{
			$langs->load("errors");
			$this->error=$langs->trans('ErrorNumRefModel', $max);
			return false;
		}

		// Check credit note num
		$siyymm='';

		$posindice=8;
		$sql = "SELECT MAX(CAST(SUBSTRING(ref FROM ".$posindice.") AS SIGNED)) as max";	// This is standard SQL
		$sql.= " FROM ".MAIN_DB_PREFIX."facture_fourn";
		$sql.= " WHERE ref LIKE '".$db->escape($this->prefixcreditnote)."____-%'";
		$sql.= " AND entity = ".$conf->entity;

		$resql=$db->query($sql);
		if ($resql)
		{
			$row = $db->fetch_row($resql);
			if ($row) { $siyymm = substr($row[0], 0, 6); $max=$row[0]; }
		}
		if ($siyymm && ! preg_match('/'.$this->prefixcreditnote.'[0-9][0-9][0-9][0-9]/i', $siyymm))
		{
			$this->error=$langs->trans('ErrorNumRefModel', $max);
			return false;
		}

		// Check deposit num
		$siyymm='';

		$posindice=8;
		$sql = "SELECT MAX(CAST(SUBSTRING(ref FROM ".$posindice.") AS SIGNED)) as max";	// This is standard SQL
		$sql.= " FROM ".MAIN_DB_PREFIX."facture_fourn";
		$sql.= " WHERE ref LIKE '".$db->escape($this->prefixdeposit)."____-%'";
		$sql.= " AND entity = ".$conf->entity;

		$resql=$db->query($sql);
		if ($resql)
		{
			$row = $db->fetch_row($resql);
			if ($row) { $siyymm = substr($row[0], 0, 6); $max=$row[0]; }
		}
		if ($siyymm && ! preg_match('/'.$this->prefixdeposit.'[0-9][0-9][0-9][0-9]/i', $siyymm))
		{
			$this->error=$langs->trans('ErrorNumRefModel', $max);
			return false;
		}
    }

    /**
     * Return next value
     *
     * @param	Societe		$objsoc     Object third party
     * @param  	Object		$object		Object invoice
     * @param   string		$mode       'next' for next value or 'last' for last value
     * @return 	string      			Value if OK, 0 if KO
     */
    public function getNextValue($objsoc, $object, $mode = 'next')
    {
        global $db,$conf;

        if ($object->type == 2) $prefix=$this->prefixcreditnote;
        elseif ($facture->type == 3) $prefix=$this->prefixdeposit;
        else $prefix=$this->prefixinvoice;

        // D'abord on recupere la valeur max
        $posindice=8;
        $sql = "SELECT MAX(CAST(SUBSTRING(ref FROM ".$posindice.") AS SIGNED)) as max";	// This is standard SQL
        $sql.= " FROM ".MAIN_DB_PREFIX."facture_fourn";
        $sql.= " WHERE ref LIKE '".$prefix."____-%'";
        $sql.= " AND entity = ".$conf->entity;

        $resql=$db->query($sql);
        dol_syslog(get_class($this)."::getNextValue", LOG_DEBUG);
        if ($resql)
        {
        	$obj = $db->fetch_object($resql);
        	if ($obj) $max = intval($obj->max);
        	else $max=0;
        }
        else
        {
        	return -1;
        }

        if ($mode == 'last')
        {
    		if ($max >= (pow(10, 4) - 1)) $num=$max;	// If counter > 9999, we do not format on 4 chars, we take number as it is
    		else $num = sprintf("%04s", $max);

        	$ref='';
        	$sql = "SELECT ref as ref";
        	$sql.= " FROM ".MAIN_DB_PREFIX."facture_fourn";
        	$sql.= " WHERE ref LIKE '".$prefix."____-".$num."'";
        	$sql.= " AND entity = ".$conf->entity;

        	dol_syslog(get_class($this)."::getNextValue", LOG_DEBUG);
        	$resql=$db->query($sql);
        	if ($resql)
        	{
        		$obj = $db->fetch_object($resql);
        		if ($obj) $ref = $obj->ref;
        	}
        	else dol_print_error($db);

        	return $ref;
        }
        elseif ($mode == 'next')
        {
        	$date=$object->date;	// This is invoice date (not creation date)
        	$yymm = strftime("%y%m", $date);

        	if ($max >= (pow(10, 4) - 1)) $num=$max+1;	// If counter > 9999, we do not format on 4 chars, we take number as it is
        	else $num = sprintf("%04s", $max+1);

        	dol_syslog(get_class($this)."::getNextValue return ".$prefix.$yymm."-".$num);
        	return $prefix.$yymm."-".$num;
        }
        else dol_print_error('', 'Bad parameter for getNextValue');
    }


    /**
     * Return next free value
     *
     * @param	Societe		$objsoc     	Object third party
     * @param	string		$objforref		Object for number to search
     * @param   string		$mode       	'next' for next value or 'last' for last value
     * @return  string      				Next free value
     */
	public function getNumRef($objsoc, $objforref, $mode = 'next')
	{
		return $this->getNextValue($objsoc, $objforref, $mode);
	}
}