function clash_process(CAppUI $AppUI)
{
global $do_include;
$obj = new CEvent();
$obj->bind($_SESSION['add_event_post']);
$attendees = $_SESSION['add_event_attendees'];
$users = array();
if (isset($attendees) && $attendees) {
$users = explode(',', $attendees);
}
array_push($users, $obj->event_owner);
// First remove any duplicates
$users = array_unique($users);
// Now remove any null entries, so implode doesn't create a dud SQL
// Foreach is safer as it works on a copy of the array.
foreach ($users as $key => $user) {
if (!$user) {
unset($users[$key]);
}
}
$start_date = new w2p_Utilities_Date($_POST['event_start_date'] . "000000");
$end_date = new w2p_Utilities_Date($_POST['event_end_date'] . "235959");
// First find any events in the range requested.
$event_list = $obj->getEventsInWindow($start_date->format(FMT_DATETIME_MYSQL), $end_date->format(FMT_DATETIME_MYSQL), (int) ($_POST['start_time'] / 100), (int) ($_POST['end_time'] / 100), $users);
$event_start_date = new w2p_Utilities_Date($_POST['event_start_date'] . $_POST['start_time']);
$event_end_date = new w2p_Utilities_Date($_POST['event_end_date'] . $_POST['end_time']);
if (!$event_list || !count($event_list)) {
// First available date/time is OK, seed addEdit with the details.
$obj->event_start_date = $event_start_date->format(FMT_DATETIME_MYSQL);
$obj->event_end_date = $event_end_date->format(FMT_DATETIME_MYSQL);
$_SESSION['add_event_post'] = get_object_vars($obj);
$AppUI->setMsg('No clashes in suggested timespan', UI_MSG_OK);
$_SESSION['event_is_clash'] = true;
$_GET['event_id'] = $obj->event_id;
$do_include = W2P_BASE_DIR . "/modules/calendar/addedit.php";
return;
}
// Now we grab the events, in date order, and compare against the
// required start and end times.
// Working in 30 minute increments from the start time, and remembering
// the end time stipulation, find the first hole in the times.
// Determine the duration in hours/minutes.
$start_hour = (int) ($_POST['start_time'] / 10000);
$start_minutes = (int) ($_POST['start_time'] % 10000 / 100);
$start_time = $start_hour * 60 + $start_minutes;
$end_hour = (int) ($_POST['end_time'] / 10000);
$end_minutes = (int) ($_POST['end_time'] % 10000 / 100);
$end_time = $end_hour * 60 + $end_minutes - $_POST['duration'];
// First, build a set of "slots" that give us the duration
// and start/end times we need
$first_day = $start_date->format('%E');
$end_day = $end_date->format('%E');
$days_between = $end_day + 1 - $first_day;
$oneday = new Date_Span(array(1, 0, 0, 0));
$slots = array();
$slot_count = 0;
$first_date = new w2p_Utilities_Date($start_date);
for ($i = 0; $i < $days_between; $i++) {
if ($first_date->isWorkingDay()) {
$slots[$i] = array();
for ($j = $start_time; $j <= $end_time; $j += 30) {
$slot_count++;
$slots[$i][] = array('date' => $first_date->format('%Y-%m-%d'), 'start_time' => $j, 'end_time' => $j + $_POST['duration'], 'committed' => false);
}
}
$first_date->addSpan($oneday);
}
// Now process the events list
foreach ($event_list as $event) {
$sdate = new w2p_Utilities_Date($event['event_start_date']);
$edate = new w2p_Utilities_Date($event['event_end_date']);
$sday = $sdate->format('%E');
$day_offset = $sday - $first_day;
// Now find the slots on that day that match
list($syear, $smonth, $sday, $shour, $sminute, $ssecond) = sscanf($event['event_start_date'], "%4d-%2d-%2d %2d:%2d:%2d");
list($eyear, $emonth, $eday, $ehour, $eminute, $esecond) = sscanf($event['event_start_date'], "%4d-%2d-%2d %2d:%2d:%2d");
$start_mins = $shour * 60 + $sminute;
$end_mins = $ehour * 60 + $eminute;
if (isset($slots[$day_offset])) {
foreach ($slots[$day_offset] as $key => $slot) {
if ($start_mins <= $slot['end_time'] && $end_mins >= $slot['start_time']) {
$slots[$day_offset][$key]['committed'] = true;
}
}
}
}
// Third pass through, find the first uncommitted slot;
foreach ($slots as $day_offset => $day_slot) {
foreach ($day_slot as $slot) {
if (!$slot['committed']) {
$hour = (int) ($slot['start_time'] / 60);
$min = $slot['start_time'] % 60;
$ehour = (int) ($slot['end_time'] / 60);
$emin = $slot['end_time'] % 60;
$obj->event_start_date = $slot['date'] . ' ' . sprintf("%02d:%02d:00", $hour, $min);
$obj->event_end_date = $slot['date'] . ' ' . sprintf("%02d:%02d:00", $ehour, $emin);
$_SESSION['add_event_post'] = get_object_vars($obj);
$AppUI->setMsg('First available time slot', UI_MSG_OK);
$_SESSION['event_is_clash'] = true;
$_GET['event_id'] = $obj->event_id;
$do_include = W2P_BASE_DIR . '/modules/calendar/addedit.php';
return;
}
}
}
// If we get here we have found no available slots
clear_clash();
$AppUI->setMsg('No times match your parameters', UI_MSG_ALERT);
$AppUI->redirect();
}
