<?php
/*
 * ARBS - Advanced Resource Booking System
 * Copyright (C) 2005-2007 ITMC der TU Dortmund
 * Based on MRBS by Daniel Gardner <http://mrbs.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 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */


function minicals($year, $month, $day, $area, $category) {

// PHP Calendar Class
//  
// Copyright David Wilkinson 2000. All Rights reserved.
// 
// This software may be used, modified and distributed freely
// providing this copyright notice remains intact at the head 
// of the file.
//
// This software is freeware. The author accepts no liability for
// any loss or damages whatsoever incurred directly or indirectly 
// from the use of this script.
//
// URL:   http://www.cascade.org.uk/software/php/calendar/
// Email: hide@address.com

class Calendar{
    var $month;
    var $year;
    var $day;
    var $h;
    var $area;
    var $category;
    
    function Calendar($day, $month, $year, $h, $area,$category){
        $this->day   = $day;
        $this->month = $month;
        $this->year  = $year;
        $this->h     = $h;
        $this->area  = $area;
        $this->category  = $category;
    }
       
    function getCalendarLink($month, $year){
        return "";
    }
    
   function getDateLink($href, $day, $month, $year) {
      return "week.php".$href."year=$year&month=$month&day=$day&area=".$this->area."&category=".$this->category;
   }
    

    function getDaysInMonth($month, $year){
        if ($month < 1 || $month > 12){
            return 0;
        }
    
        $days = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
   
        $d = $days[$month - 1];
   
        if ($month == 2){
            // Check for leap year
            // Forget the 4000 rule, I doubt I'll be around then...
        
            if ($year%4 == 0){
                if ($year%100 == 0){
                    if ($year%400 == 0){
                        $d = 29;
                    }
                }
                else{
                    $d = 29;
                }
            }
        }    
        return $d;
    }

    function getFirstDays(){
      global $weekstarts;

      $basetime = mktime(12,0,0,6,11+$weekstarts,2000);
      for ($i = 0, $s = ""; $i < 7; $i++){
         $show = $basetime + ($i * 24 * 60 * 60);
         $fl = substr(parseDate(strftime('%a',$show)),0,1);
         $s .= "<td align=center valign=top class=\"calendarHeader\">$fl</td>\n";
      }
      return $s;
    }

    function getHTML(){
        global $weekstarts;

        if (!isset($weekstarts)) $weekstarts = 0;
        $s = "";
        
    	$daysInMonth = $this->getDaysInMonth($this->month, $this->year);
    	$date = mktime(12, 0, 0, $this->month, 1, $this->year);
    	
    	$first = (strftime("%w",$date) + 7 - $weekstarts) % 7;
    	$monthName = parseDate(strftime("%B",$date));
    	
    	$prevMonth = $this->getCalendarLink($this->month - 1 >   0 ? $this->month - 1 : 12, $this->month - 1 >   0 ? $this->year : $this->year - 1);
    	$nextMonth = $this->getCalendarLink($this->month + 1 <= 12 ? $this->month + 1 :  1, $this->month + 1 <= 12 ? $this->year : $this->year + 1);
    	
    	$s .= "<table class=\"calendar\">\n";
    	$s .= "<tr>\n";
    	//$s .= "<td align=center valign=top>" . (($prevMonth == "") ? "&nbsp;" : "<a href=\"$prevMonth\">&lt;&lt;</a>")  . "</td>\n";
    	$s .= "<td align=center valign=top class=\"calendarHeader\" colspan=7>$monthName&nbsp;$this->year</td>\n"; 
    	//$s .= "<td align=center valign=top>" . (($nextMonth == "") ? "&nbsp;" : "<a href=\"$nextMonth\">&gt;&gt;</a>")  . "</td>\n";
    	$s .= "</tr>\n";
    	
    	$s .= "<tr>\n";
        $s .= $this->getFirstDays();
    	$s .= "</tr>\n";
    	
    	$d = 1 - $first;
    	   	
    	while ($d <= $daysInMonth){
    	    $s .= "<tr>\n";       
    	    
    	    for ($i = 0; $i < 7; $i++){
    	        $s .= "<td class=\"calendar\" align=right valign=top>";       
    	        if ($d > 0 && $d <= $daysInMonth){
    	            $link = $this->getDateLink($href,$d, $this->month, $this->year);
                    if ($link == "")
                        $s .= $d;
                    elseif (($d == $this->day) and ($this->h))
                        $s .= "<a href=\"$link\"><font color=\"red\">$d</font></a>";
                    else
                        $s .= "<a href=\"$link\">$d</a>";
    	        }
    	        else{
    	            $s .= "&nbsp;";
    	        }
      	        $s .= "</td>\n";       
        	    $d++;
    	    }
    	    $s .= "</tr>\n";    
    	}
    	
    	$s .= "</table>\n";
    	
    	return $s;
    }
}

$lastmonth = mktime(0, 0, 0, $month-1, 1, $year);
$thismonth = mktime(0, 0, 0, $month,   $day, $year);
$nextmonth = mktime(0, 0, 0, $month+1, 1, $year);

echo "<td width='15%'>";
$cal = new Calendar(date("d",$lastmonth), date("m",$lastmonth), date("Y",$lastmonth), 0, $area,$category);
echo $cal->getHTML();
echo "</td>";

echo "<td width='15%'>";
$cal = new Calendar(date("d",$thismonth), date("m",$thismonth), date("Y",$thismonth), 1, $area,$category);
echo $cal->getHTML();
echo "</td>";

echo "<td width='15%'>";
$cal = new Calendar(date("d",$nextmonth), date("m",$nextmonth), date("Y",$nextmonth), 0, $area,$category);
echo $cal->getHTML();
echo "</td>";
}
?>