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<section class="calendar-wrapper">
<?php
function check_in_range($start_date, $end_date, $checkdate) {
$start_ts = strtotime($start_date);
$end_ts = strtotime($end_date);
$ch_ts = strtotime($checkdate);
return (($ch_ts >= $start_ts) && ($ch_ts < $end_ts));
}
// Create a date range between the schedule start and end dates
$begin = new DateTime($schedule[0]['start']);
$end = new DateTime(end($schedule)['start']);
$daterange = new DatePeriod($begin, new DateInterval('P1D'), $end);
?>
<table class="calendar">
<thead>
<tr>
<th></th>
<?php
// Loop over our date range to draw the headers
foreach($daterange as $date){
?>
<th>
<span class="day"><?php echo $date->format("d") ?></span>
<span class="long"><?php echo $date->format("l") ?></span>
<span class="short"><?php echo $date->format("D") ?></span>
</th>
<?php
}
?>
</tr>
</thead>
<tbody>
<?php
// time will count us by 30-min increments through the day
$time = mktime(0, 0, 0, 1, 1);
// Loop over the day in 30 min increments
for ($i = 0; $i < 86400; $i += 1800) {
?>
<tr>
<?php
// Only show row if we're on a full hour block. It's a rowspan 2
if ((($i / 1800) % 2) === 0 ) {
?>
<td class="hour" rowspan="2"><span><?php echo date('H', $time + $i) ?>:00</span></td>
<?php
}
?>
<?php
$now = new DateTime();
$halfhour = new DateInterval('PT30M');
$wrotepointer = false;
// Loop over each day of the week for this 30 min span
foreach($daterange as $date){
// merge date (changing days) and time (incrementing by 30 min) to draw calendar by row.
$merge = new DateTime($date->format('Y-m-d') .' ' .date('H:i:s', $time + $i));
// Set id for this time span, for referencing in JS.
$props = 'id="show-'.$merge->getTimestamp().'"';
// We'll now use $merge to see if any shows are airing at this time
$matchedshow = null;
foreach ($schedule as $show) {
if (check_in_range($show['start'], $show['end'], $merge->format('Y-m-d H:i:s'))) {
$matchedshow = $show;
break;
}
}
$active = false;
if (!$wrotepointer) {
// If current time is in this range, draw pointer.
$end = DateTimeImmutable::createFromMutable($merge)->add($halfhour);
if ($now >= $merge && $now < $end) {
$active = true;
$props .= ' class="active"';
}
}
echo "<td $props>";
if ($matchedshow) {
echo '<div class="show-title">'.$matchedshow['title'].'</div>';
// if no match was found, leave an empty node
}
if ($active) {
// Cell height here should be synced with height of '.calendar tbody tr td' in ../css/calendar.css
$height = 32;
$top = round(date_diff($merge, $now)->format('%i') / 30 * ($height-1));
echo '<div id="pointer" style="top:'.$top.'px"></div>';
$wrotepointer = true;
}
echo "</td>\n";
}
?>
</tr>
<?php
}
?>
</tbody>
</table>
</section>