<?php
/* Copyright (C) phpBSM
 * Copyright (C) 2005-2010 Laurent Destailleur  <eldy@users.sourceforge.net>
 * Copyright (C) 2005-2007 Regis Houssin        <regis.houssin@capnetworks.com>
 * Copyright (C) 2014	   Juanjo Menent        <jmenent@2byte.es>
 *
 * This file is a modified version of datepicker.php from phpBSM to fix some
 * bugs, to add new features and to dramatically increase speed.
 *
 * 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       htdocs/core/datepicker.php
 *       \brief      File to manage popup date selector
 */

if (! defined('NOREQUIREUSER'))   define('NOREQUIREUSER','1');	// disabled
//if (! defined('NOREQUIREDB'))   define('NOREQUIREDB','1');	// Not disabled cause need to load personalized language
if (! defined('NOREQUIRESOC'))    define('NOREQUIRESOC','1');
//if (! defined('NOREQUIRETRAN')) define('NOREQUIRETRAN','1');	// Not disabled cause need to do translations
if (! defined('NOCSRFCHECK'))     define('NOCSRFCHECK',1);
if (! defined('NOTOKENRENEWAL'))  define('NOTOKENRENEWAL',1);
if (! defined('NOLOGIN')) define('NOLOGIN',1);					// disabled
if (! defined('NOREQUIREMENU'))   define('NOREQUIREMENU',1);
if (! defined('NOREQUIREHTML'))   define('NOREQUIREHTML',1);

require_once '../main.inc.php';
require_once DOL_DOCUMENT_ROOT.'/core/lib/date.lib.php';

if (GETPOST('lang')) $langs->setDefaultLang(GETPOST('lang'));	// If language was forced on URL by the main.inc.php
$langs->load("main");
$langs->load("agenda");
$right=($langs->trans("DIRECTION")=='rtl'?'left':'right');
$left=($langs->trans("DIRECTION")=='rtl'?'right':'left');

//var_dump($langs->defaultlang);
//var_dump($conf->format_date_short_java);
//var_dump($langs->trans("FormatDateShortJava"));


// URL http://mydolibarr/core/datepicker.php?mode=test&m=10&y=2038 can be used for tests
print '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">'."\n";
print '<html>'."\n";
print '<head>'."\n";
if (GETPOST('mode') && GETPOST('mode') == 'test')
{
	print '<script type="text/javascript" src="'.DOL_URL_ROOT.'/core/js/lib_head.js.php"></script>'."\n";
}
else
{
	print '<title>'.$langs->trans("Calendar").'</title>';
}

// Define tradMonths javascript array (we define this in datapicker AND in parent page to avoid errors with IE8)
$tradTemp=array($langs->trans("January"),
$langs->trans("February"),
$langs->trans("March"),
$langs->trans("April"),
$langs->trans("May"),
$langs->trans("June"),
$langs->trans("July"),
$langs->trans("August"),
$langs->trans("September"),
$langs->trans("October"),
$langs->trans("November"),
$langs->trans("December")
);
print '<script type="text/javascript">';
print 'var tradMonths = [';
foreach($tradTemp as $val)
{
	print '"'.addslashes($val).'",';
}
print '""];';
print '</script>'."\n";
print '</head>'."\n";

print '<body>'."\n";


$qualified=true;

if (! isset($_GET["sd"])) $_GET["sd"]="00000000";

if (! isset($_GET["m"])) $qualified=false;
if (! isset($_GET["y"])) $qualified=false;
if (isset($_GET["m"]) && isset($_GET["y"]))
{
	if ($_GET["m"] < 1)    $qualified=false;
	if ($_GET["m"] > 12)   $qualified=false;
	if ($_GET["y"] < 0)    $qualified=false;
	if ($_GET["y"] > 9999) $qualified=false;
}

// If parameters provided, we show calendar
if ($qualified)
{
	//print $_GET["cm"].",".$_GET["sd"].",".$_GET["m"].",".$_GET["y"];exit;
	displayBox(GETPOST("sd",'alpha'),GETPOST("m",'int'),GETPOST("y",'int'));
}
else
{
	dol_print_error('','ErrorBadParameters');
}


print '</body></html>'."\n";

/**
 * 	Convert date to timestamp
 *
 * 	@param	string		$mysqldate		Date YYYMMDD
 *  @return	integer					Timestamp
 */
function xyzToUnixTimestamp($mysqldate)
{
	$year=substr($mysqldate,0,4);
	$month=substr($mysqldate,4,2);
	$day=substr($mysqldate,6,2);
	$unixtimestamp=dol_mktime(12,0,0,$month,$day,$year);
	return $unixtimestamp;
}

/**
 * Show box
 *
 * @param	string	$selectedDate	Date YYYMMDD
 * @param	int		$month			Month
 * @param 	int		$year			Year
 * @return	void
 */
function displayBox($selectedDate,$month,$year)
{
	global $langs,$conf;

	//print "$selectedDate,$month,$year";
	$thedate=dol_mktime(12,0,0,$month,1,$year);
	//print "thedate=$thedate";
	$today=dol_now();
	$todayArray=dol_getdate($today);
	if($selectedDate != "00000000")
	{
		$selDate=xyzToUnixTimestamp($selectedDate);
		$xyz=dol_print_date($selDate,"%Y%m%d");
	}
	else
	{
		$selDate=0;
		$xyz=0;
	}
	?>
<table class="dp">
	<tr>
		<td colspan="6" class="dpHead"><?php
		$selectMonth = dol_print_date($thedate, '%m');
		$selectYear = dol_print_date($thedate, '%Y');
		echo $langs->trans("Month".$selectMonth).", ".$selectYear;
		?></td>
		<td class="dpHead">
		<button type="button" class="dpInvisibleButtons" id="DPCancel"
			onClick="closeDPBox();">X</button>
		</td>
	</tr>
	<tr>
		<td class="dpButtons"
			onClick="loadMonth('<?php echo DOL_URL_ROOT.'/core/' ?>','<?php echo $month?>','<?php echo $year-1?>','<?php echo $xyz ?>','<?php echo $langs->defaultlang ?>')">&lt;&lt;</td>
		<td class="dpButtons"
			onClick="loadMonth('<?php echo DOL_URL_ROOT.'/core/' ?>','<?php if($month==1) echo "12"; else echo $month-1?>','<?php if($month==1) echo $year-1; else echo $year?>','<?php echo $xyz ?>','<?php echo $langs->defaultlang ?>')">&lt;</td>
		<td colspan="3" class="dpButtons"
			onClick="loadMonth('<?php echo DOL_URL_ROOT.'/core/' ?>','<?php echo (int) dol_print_date($today,'%m')?>','<?php echo $todayArray["year"]?>','<?php echo $xyz ?>','<?php echo $langs->defaultlang ?>')"><?php echo '-' ?></td>
		<td class="dpButtons"
			onClick="loadMonth('<?php echo DOL_URL_ROOT.'/core/' ?>','<?php if($month==12) echo "1"; else echo $month+1?>','<?php if($month==12) echo $year+1; else echo $year;?>','<?php echo $xyz ?>','<?php echo $langs->defaultlang ?>')">&gt;</td>
		<td class="dpButtons"
			onClick="loadMonth('<?php echo DOL_URL_ROOT.'/core/' ?>','<?php echo $month?>','<?php echo $year+1?>','<?php echo $xyz ?>','<?php echo $langs->defaultlang ?>')">&gt;&gt;</td>
	</tr>
	<tr class="dpDayNames">
	<?php
	$startday=isset($conf->global->MAIN_START_WEEK)?$conf->global->MAIN_START_WEEK:1;
	$day_names = array('ShortSunday', 'ShortMonday', 'ShortTuesday', 'ShortWednesday', 'ShortThursday', 'ShortFriday', 'ShortSaturday');
	for( $i=0; $i < 7; $i++ )
	{
		echo '<td width="', (int) (($i+1)*100/7) - (int) ($i*100/7), '%">', $langs->trans($day_names[($i + $startday) % 7]), '</td>', "\n";
	}
	?>
	</tr>
	<?php
	//print "x ".$thedate." y";			// $thedate = first day of month
	$firstdate=dol_getdate($thedate);
	//var_dump($firstdateofweek);
	$mydate=dol_get_first_day_week(1, $month, $year, true);	// mydate = cursor date

	// Loop on each day of month
	$stoploop=0; $day=1; $cols=0;
	while (! $stoploop)
	{
		//print_r($mydate);
		if ($mydate < $firstdate)	// At first run
		{
			echo "<TR class=\"dpWeek\">";
			//echo $conf->global->MAIN_START_WEEK.' '.$firstdate["wday"].' '.$startday;
			$cols=0;
			for ($i = 0; $i < 7; $i++)
			{
				$w = ($i + $startday) % 7;
				if ($w == $firstdate["wday"])
				{
					$mydate = $firstdate;
					break;
				}
				echo "<TD>&nbsp;</TD>";
				$cols++;
			}
		}
		else
		{
			if ($mydate["wday"] == $startday)
			{
				echo "<TR class=\"dpWeek\">";
				$cols=0;
			}
		}

		$dayclass="dpReg";
		if($thedate==$selDate) $dayclass="dpSelected";
		elseif($thedate==$today) $dayclass="dpToday";

		if ($langs->trans("FormatDateShortJavaInput")=="FormatDateShortJavaInput")
		{
		    print "ERROR FormatDateShortJavaInput not defined for language ".$langs->defaultlang;
		    exit;
		}

		// Sur click dans calendrier, appelle fonction dpClickDay
		echo "<TD class=\"".$dayclass."\"";
		echo " onMouseOver=\"dpHighlightDay(".$mydate["year"].",parseInt('".dol_print_date($thedate,"%m")."',10),".$mydate["mday"].",tradMonths)\"";
		echo " onClick=\"dpClickDay(".$mydate["year"].",parseInt('".dol_print_date($thedate,"%m")."',10),".$mydate["mday"].",'".$langs->trans("FormatDateShortJavaInput")."')\"";
		echo ">".sprintf("%02s",$mydate["mday"])."</TD>";
		$cols++;

		if (($mydate["wday"] + 1) % 7 == $startday) echo "</TR>\n";

		//$thedate=strtotime("tomorrow",$thedate);
		$day++;
		$thedate=dol_mktime(12,0,0,$month,$day,$year);
		if ($thedate == '')
		{
			$stoploop=1;
		}
		else
		{
			$mydate=dol_getdate($thedate);
			if ($firstdate["month"] != $mydate["month"]) $stoploop=1;
		}
	}

	if ($cols < 7)
	{
		for($i=6; $i>=$cols; $i--) echo "<TD>&nbsp;</TD>";
		echo "</TR>\n";
	}
	?>
	<tr>
		<td id="dpExp" class="dpExplanation" colspan="7"><?php
		if($selDate)
		{
			$tempDate=dol_getdate($selDate);
			print $langs->trans("Month".$selectMonth)." ";
			print sprintf("%02s",$tempDate["mday"]);
			print ", ".$selectYear;
		}
		else
		{
			print "Click a Date";
		}
		?></td>
	</tr>
</table>
		<?php
}//end function
