<?php
class Calendar
{
public $ical;
private $categories = [];
public static function setup()
{
$pageName = 'Kalender';
$page_exists = get_page_by_path($pageName, OBJECT, 'page');
// Wenn die Seite nicht existiert, erstelle sie
if (!$page_exists) {
$page_id = wp_insert_post(array(
'post_title' => $pageName,
'post_content' => '{{calendar}}',
'post_status' => 'publish',
'post_type' => 'page',
));
update_option('bdp_calendar_source_url', 'https://wiki.sachsen.pfadfinden.de/rest/calendar-services/1.0/calendar/export/subcalendar/private/ff69f5a689391ac0d7f78a70189cfde7c48cb923.ics');
}
}
public static function printCalendar($content) {
// Der zu ersetzende String
$original_string = '{{calendar}}';
$calendar = new Calendar();
// Der Ersatzstring
$replacement_string = $calendar->show();
// Ersetze den Originalstring durch den Ersatzstring im Seiteninhalt
$content = str_replace($original_string, $replacement_string, $content);
return $content;
}
/**
* Constructor
*/
public function __construct()
{
$categories = get_option('bdp_calendar_categories', null);
if (null !== $categories) {
$categories = json_decode($categories, true);
} else {
$categories = [
'yellow' => 'Meute',
'blue' => 'Sippe',
'red' => 'Runde',
'green' => 'StaFü',
'fuchsia' => '',
'orange' => ''
];
}
foreach ($categories as $color => $keyname) {
$this->categories[$keyname] = $color;
}
$calendarUrl = get_option('bdp_calendar_source_url', 'https://wiki.sachsen.pfadfinden.de/rest/calendar-services/1.0/calendar/export/subcalendar/private/ff69f5a689391ac0d7f78a70189cfde7c48cb923.ics');
$this->ical = new \ICal('', array(
'defaultSpan' => 2, // Default value
'defaultTimeZone' => '',
'defaultWeekStart' => 'MO', // Default value
'disableCharacterReplacement' => false, // Default value
'filterDaysAfter' => null, // Default value
'filterDaysBefore' => null, // Default value
'httpUserAgent' => null, // Default value
'skipRecurrence' => false, // Default value
));
$this->ical->initUrl($calendarUrl);
$this->ical->events();
$this->naviHref = htmlentities($_SERVER['PHP_SELF']);
}
/********************* PROPERTY ********************/
private $dayLabels = array("Mon", "Die", "Mit", "Don", "Fre", "Sam", "Son");
private $monthLabels = ['', 'Januar', 'Februar', 'März', 'April', 'Mai', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'Dezember'];
private $currentYear = 0;
private $currentMonth = 0;
private $currentDay = 0;
private $currentDate = null;
private $daysInMonth = 0;
private $naviHref = null;
/********************* PUBLIC **********************/
/**
* print out the calendar
*/
public function show()
{
$year = null;
$month = null;
if (null == $year && isset($_GET['year'])) {
$year = $_GET['year'];
} else if (null == $year) {
$year = date("Y", time());
}
if (null == $month && isset($_GET['month'])) {
$month = $_GET['month'];
} else if (null == $month) {
$month = date("m", time());
}
$this->currentYear = $year;
$this->currentMonth = $month;
$this->daysInMonth = $this->_daysInMonth($month, $year);
$content = ' <div id="calendarContainer"><div id="calendar">' .
'<div class="box">' .
$this->_createNavi() .
'</div>' .
'<div class="box-content">' .
'<table style=" border-collapse: collapse; border-spacing: 0; table-layout: fixed;width: 100%;">
<tr>' . $this->_createLabels() . '</tr>';
$weeksInMonth = $this->_weeksInMonth($month, $year);
// Create weeks in a month
for ($i = 0; $i < $weeksInMonth; $i++) {
//Create days in a week
for ($j = 1; $j <= 7; $j++) {
if ($j % 7 == 1) {
$content .= '</tr><tr class="bdp_cal_day">';
}
$content .= $this->_showDay($i * 7 + $j);
}
}
$content .= '</table></div>';
return $content;
}
private function getCssClass($category)
{
$cssClass = 'bdp_cal_event_' . ($this->categories[$category] ?? 'grey');
return $cssClass;
}
private function getEvent($date)
{
$eventString = '<ul>';
#echo '<pre>';
foreach ($this->ical->filterByDate($date) as $curEvent) {
$time = $curEvent->getEventTime() ?? 'Ganztags';
#print_r($curEvent);
$eventString .= '<li class="' . $this->getCssClass($curEvent->category) . '">' .
$time . ':<br />' .
$curEvent->summary . '</li>';
}
return $eventString;
}
/********************* PRIVATE **********************/
/**
* create the li element for ul
*/
private function _showDay($cellNumber)
{
if ($this->currentDay == 0) {
$firstDayOfTheWeek = date('N', strtotime($this->currentYear . '-' . $this->currentMonth . '-01'));
if (intval($cellNumber) == intval($firstDayOfTheWeek)) {
$this->currentDay = 1;
}
}
if (($this->currentDay != 0) && ($this->currentDay <= $this->daysInMonth)) {
$date =
str_pad($this->currentDay, 2, '0', STR_PAD_LEFT) . '.' .
str_pad($this->currentMonth, 2, '0', STR_PAD_LEFT) . '.' .
$this->currentYear;
$this->currentDate = date('Y-m-d', strtotime($this->currentYear . '-' . $this->currentMonth . '-' . ($this->currentDay)));
$cellContent = '<span class="bdp_cal_day">' . $this->currentDay . '</span>' . $this->getEvent($date);
$this->currentDay++;
} else {
$this->currentDate = null;
$cellContent = null;
}
return '<td style="padding-top: 5px; border-color: #a0a0a0; height: 120px; border-style: solid; border-width:1px; vertical-align: top;">' . $cellContent . '</td>';
}
/**
* create navigation
*/
private function _createNavi()
{
$nextMonth = $this->currentMonth == 12 ? 1 : intval($this->currentMonth) + 1;
$nextYear = $this->currentMonth == 12 ? intval($this->currentYear) + 1 : $this->currentYear;
$preMonth = $this->currentMonth == 1 ? 12 : intval($this->currentMonth) - 1;
$preYear = $this->currentMonth == 1 ? intval($this->currentYear) - 1 : $this->currentYear;
return
'<div class="header">' .
'<a class="prev" href="javascript:void(0);" onclick="loadCalendar(' . $preMonth . ',' . $preYear . ');"><< Vorheriger Monat</a>' .
'<span class="title">' . $this->monthLabels[(int)date('m', strtotime($this->currentYear . '-' . $this->currentMonth . '-1'))] . ' ' . date('Y', strtotime($this->currentYear . '-' . $this->currentMonth . '-1')) . '</span>' .
'<a class="next" href="javascript:void(0);" onclick="loadCalendar(' . $nextMonth . ',' . $nextYear . ');">Nächster Monat >></a>' .
'</div>';
}
/**
* create calendar week labels
*/
private function _createLabels()
{
$content = '';
foreach ($this->dayLabels as $index => $label) {
$content .= '<td style="max-width: 14.287%;">' . $label . '</td>';
}
return $content;
}
/**
* calculate number of weeks in a particular month
*/
private function _weeksInMonth($month = null, $year = null)
{
if (null == ($year)) {
$year = date("Y", time());
}
if (null == ($month)) {
$month = date("m", time());
}
// find number of days in this month
$daysInMonths = $this->_daysInMonth($month, $year);
$numOfweeks = ($daysInMonths % 7 == 0 ? 0 : 1) + intval($daysInMonths / 7);
$monthEndingDay = date('N', strtotime($year . '-' . $month . '-' . $daysInMonths));
$monthStartDay = date('N', strtotime($year . '-' . $month . '-01'));
if ($monthEndingDay < $monthStartDay) {
$numOfweeks++;
}
return $numOfweeks;
}
/**
* calculate number of days in a particular month
*/
private function _daysInMonth($month = null, $year = null)
{
if (null == ($year))
$year = date("Y", time());
if (null == ($month))
$month = date("m", time());
return date('t', strtotime($year . '-' . $month . '-01'));
}
}