<?php
/* Copyright (C) 2009-2013 Laurent Destailleur  <eldy@users.sourceforge.net>
 *
 * 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 <https://www.gnu.org/licenses/>.
 * or see https://www.gnu.org/
 */

/**
 *      \file       htdocs/core/lib/invoice2.lib.php
 *      \ingroup    facture
 *      \brief      Function to rebuild PDF and merge PDF files into one
 */

require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
require_once DOL_DOCUMENT_ROOT.'/core/lib/pdf.lib.php';


/**
 * Function to build a compiled PDF
 *
 * @param	DoliDB		$db						Database handler
 * @param	Translate	$langs					Object langs
 * @param	Conf		$conf					Object conf
 * @param	string		$diroutputpdf			Dir to output file
 * @param	string		$newlangid				Lang id
 * @param 	array		$filter					Array with filters
 * @param 	integer		$dateafterdate			Invoice after date
 * @param 	integer 	$datebeforedate			Invoice before date
 * @param 	integer		$paymentdateafter		Payment after date (must includes hour)
 * @param 	integer		$paymentdatebefore		Payment before date (must includes hour)
 * @param	int			$usestdout				Add information onto standard output
 * @param	int			$regenerate				''=Use existing PDF files, 'nameofpdf'=Regenerate all PDF files using the template
 * @param	string		$filesuffix				Suffix to add into file name of generated PDF
 * @param	string		$paymentbankid			Only if payment on this bank account id
 * @param	array		$thirdpartiesid			List of thirdparties id when using filter excludethirdpartiesid	or onlythirdpartiesid
 * @param	string		$fileprefix				Prefix to add into filename of generated PDF
 * @return	int									Error code
 */
function rebuild_merge_pdf($db, $langs, $conf, $diroutputpdf, $newlangid, $filter, $dateafterdate, $datebeforedate, $paymentdateafter, $paymentdatebefore, $usestdout, $regenerate = 0, $filesuffix = '', $paymentbankid = '', $thirdpartiesid = '', $fileprefix = 'mergedpdf')
{
	$sql = "SELECT DISTINCT f.rowid, f.ref";
	$sql .= " FROM ".MAIN_DB_PREFIX."facture as f";
	$sqlwhere = '';
	$sqlorder = '';
	if (in_array('all', $filter))
	{
		$sqlorder = " ORDER BY f.ref ASC";
	}
	if (in_array('date', $filter))
	{
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= " f.fk_statut > 0";
		$sqlwhere .= " AND f.datef >= '".$db->idate($dateafterdate)."'";
		$sqlwhere .= " AND f.datef <= '".$db->idate($datebeforedate)."'";
		$sqlorder = " ORDER BY f.datef ASC";
	}
	if (in_array('nopayment', $filter))
	{
		$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."paiement_facture as pf ON f.rowid = pf.fk_facture";
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= " f.fk_statut > 0";
		$sqlwhere .= " AND pf.fk_paiement IS NULL";
	}
	if (in_array('payments', $filter) || in_array('bank', $filter))
	{
		$sql .= ", ".MAIN_DB_PREFIX."paiement_facture as pf, ".MAIN_DB_PREFIX."paiement as p";
		if (in_array('bank', $filter)) $sql .= ", ".MAIN_DB_PREFIX."bank as b";
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= " f.fk_statut > 0";
		$sqlwhere .= " AND f.rowid = pf.fk_facture";
		$sqlwhere .= " AND pf.fk_paiement = p.rowid";
		if (in_array('payments', $filter))
		{
			$sqlwhere .= " AND p.datep >= '".$db->idate($paymentdateafter)."'";
			$sqlwhere .= " AND p.datep <= '".$db->idate($paymentdatebefore)."'";
		}
		if (in_array('bank', $filter))
		{
			$sqlwhere .= " AND p.fk_bank = b.rowid";
			$sqlwhere .= " AND b.fk_account = ".$paymentbankid;
		}
		$sqlorder = " ORDER BY p.datep ASC";
	}
	if (in_array('nodeposit', $filter))
	{
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= ' type <> 3';
	}
	if (in_array('noreplacement', $filter))
	{
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= ' type <> 1';
	}
	if (in_array('nocreditnote', $filter))
	{
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= ' type <> 2';
	}
	if (in_array('excludethirdparties', $filter) && is_array($thirdpartiesid))
	{
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= ' f.fk_soc NOT IN ('.join(',', $thirdpartiesid).')';
	}
	if (in_array('onlythirdparties', $filter) && is_array($thirdpartiesid))
	{
		if (empty($sqlwhere)) $sqlwhere = ' WHERE ';
		else $sqlwhere .= " AND";
		$sqlwhere .= ' f.fk_soc IN ('.join(',', $thirdpartiesid).')';
	}
	if ($sqlwhere) $sql .= $sqlwhere;
	if ($sqlorder) $sql .= $sqlorder;

	//print $sql; exit;
	dol_syslog("scripts/invoices/rebuild_merge.php:", LOG_DEBUG);

	if ($usestdout) print '--- start'."\n";

	// Start of transaction
	//$db->begin();

	$error = 0;
	$result = 0;
	$files = array(); // liste les fichiers

	dol_syslog("scripts/invoices/rebuild_merge.php", LOG_DEBUG);
	if ($resql = $db->query($sql))
	{
		$num = $db->num_rows($resql);
		$cpt = 0;
		$oldemail = '';
		$message = '';
		$total = '';

		if ($num)
		{
			// First loop on each resultset to build PDF
			// -----------------------------------------

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

				$fac = new Facture($db);
				$result = $fac->fetch($obj->rowid);
				if ($result > 0)
				{
					$outputlangs = $langs;
					if (!empty($newlangid))
					{
						if ($outputlangs->defaultlang != $newlangid)
						{
							$outputlangs = new Translate("", $conf);
							$outputlangs->setDefaultLang($newlangid);
						}
					}
					$filename = $conf->facture->dir_output.'/'.$fac->ref.'/'.$fac->ref.'.pdf';
					if ($regenerate || !dol_is_file($filename))
					{
						if ($usestdout) print "Build PDF for invoice ".$obj->ref." - Lang = ".$outputlangs->defaultlang."\n";
						$result = $fac->generateDocument($regenerate ? $regenerate : $fac->modelpdf, $outputlangs);
					}
					else {
						if ($usestdout) print "PDF for invoice ".$obj->ref." already exists\n";
					}

					// Add file into files array
					$files[] = $filename;
				}

				if ($result <= 0)
				{
					$error++;
					if ($usestdout) print "Error: Failed to build PDF for invoice ".($fac->ref ? $fac->ref : ' id '.$obj->rowid)."\n";
					else dol_syslog("Failed to build PDF for invoice ".($fac->ref ? $fac->ref : ' id '.$obj->rowid), LOG_ERR);
				}

				$cpt++;
			}


			// Define format of output PDF
			$formatarray = pdf_getFormat($langs);
			$page_largeur = $formatarray['width'];
			$page_hauteur = $formatarray['height'];
			$format = array($page_largeur, $page_hauteur);

			if ($usestdout) print "Using output PDF format ".join('x', $format)."\n";
			else dol_syslog("Using output PDF format ".join('x', $format), LOG_ERR);


			// Now, build a merged files with all files in $files array
			//---------------------------------------------------------

			// Create empty PDF
			$pdf = pdf_getInstance($format);
			if (class_exists('TCPDF'))
			{
				$pdf->setPrintHeader(false);
				$pdf->setPrintFooter(false);
			}
			$pdf->SetFont(pdf_getPDFFont($langs));

			if ($conf->global->MAIN_DISABLE_PDF_COMPRESSION) $pdf->SetCompression(false);
			//$pdf->SetCompression(false);

			// Add all others
			foreach ($files as $file)
			{
				if ($usestdout) print "Merge PDF file for invoice ".$file."\n";
				else dol_syslog("Merge PDF file for invoice ".$file);

				// Charge un document PDF depuis un fichier.
				$pagecount = $pdf->setSourceFile($file);
				for ($i = 1; $i <= $pagecount; $i++)
				{
					 $tplidx = $pdf->importPage($i);
					 $s = $pdf->getTemplatesize($tplidx);
					 $pdf->AddPage($s['h'] > $s['w'] ? 'P' : 'L');
					 $pdf->useTemplate($tplidx);
				}
			}

			// Create output dir if not exists
			dol_mkdir($diroutputpdf);

			// Save merged file
			$filename = $fileprefix;
			if (empty($filename)) $filename = 'mergedpdf';
			if (!empty($filesuffix)) $filename .= '_'.$filesuffix;
			$file = $diroutputpdf.'/'.$filename.'.pdf';

			if (!$error && $pagecount)
			{
				$pdf->Output($file, 'F');
				if (!empty($conf->global->MAIN_UMASK))
					@chmod($file, octdec($conf->global->MAIN_UMASK));
			}

			if ($usestdout)
			{
				if (!$error) print "Merged PDF has been built in ".$file."\n";
				else print "Can't build PDF ".$file."\n";
			}

			$result = 1;
		}
		else
		{
			if ($usestdout) print "No invoices found for criteria.\n";
			else dol_syslog("No invoices found for criteria");
			$result = 0;
		}
	}
	else
	{
		dol_print_error($db);
		dol_syslog("scripts/invoices/rebuild_merge.php: Error");
		$error++;
	}

	if ($error) return -1;
	else return $result;
}
