/**
* Creates or modifies an existing event
* TODO: detect if we are defining a new recurrence-id
*/
function modify()
{
// Important data to be filled later
$etag = '';
$href = '';
$calendar = '';
$resource = null;
// Default new properties. To be cleaned
// on Icshelper library
$p = $this->input->post(null, TRUE);
// XSS
$this->load->library('form_validation');
$this->form_validation->set_rules('calendar', $this->i18n->_('labels', 'calendar'), 'required');
$this->form_validation->set_rules('summary', $this->i18n->_('labels', 'summary'), 'required');
$this->form_validation->set_rules('start_date', $this->i18n->_('labels', 'startdate'), 'required|callback__valid_date');
$this->form_validation->set_rules('end_date', $this->i18n->_('labels', 'enddate'), 'required|callback__valid_date');
$this->form_validation->set_rules('recurrence_count', $this->i18n->_('labels', 'repeatcount'), 'callback__empty_or_natural_no_zero');
$this->form_validation->set_rules('recurrence_until', $this->i18n->_('labels', 'repeatuntil'), 'callback__empty_or_valid_date');
if ($this->form_validation->run() === FALSE) {
$this->_throw_exception(validation_errors());
}
$this->load->library('caldav');
// DateTime objects
$start = null;
$end = null;
$tz = isset($p['timezone']) ? $this->timezonemanager->getTz($p['timezone']) : $this->timezonemanager->getTz($this->config->item('default_timezone'));
// Additional validations
// 1. All day? If all day, require start_time, end_date and end_time
// If not, generate our own values
if (isset($p['allday']) && $p['allday'] == 'true') {
// Start and end days, 00:00
$start = $this->dates->frontend2datetime($p['start_date'] . ' ' . date($this->time_format, mktime(0, 0)), $this->tz_utc);
$end = $this->dates->frontend2datetime($p['end_date'] . ' ' . date($this->time_format, mktime(0, 0)), $this->tz_utc);
// Add 1 day (iCalendar needs this)
$end->add(new DateInterval('P1D'));
} else {
// Create new form validation rules
$this->form_validation->set_rules('start_time', $this->i18n->_('labels', 'starttime'), 'required|callback__valid_time');
$this->form_validation->set_rules('end_time', $this->i18n->_('labels', 'endtime'), 'required|callback__valid_time');
if ($this->form_validation->run() === FALSE) {
$this->_throw_exception(validation_errors());
}
// 2. Check if start date <= end date
$start = $this->dates->frontend2datetime($p['start_date'] . ' ' . $p['start_time'], $tz);
$end = $this->dates->frontend2datetime($p['end_date'] . ' ' . $p['end_time'], $tz);
if ($end->getTimestamp() < $start->getTimestamp()) {
$this->_throw_exception($this->i18n->_('messages', 'error_startgreaterend'));
}
}
$p['dtstart'] = $start;
$p['dtend'] = $end;
// Recurrence checks
unset($p['rrule']);
if (isset($p['recurrence_type'])) {
if ($p['recurrence_type'] != 'none') {
if (isset($p['recurrence_until']) && !empty($p['recurrence_until'])) {
$p['recurrence_until'] .= date($this->time_format, mktime(0, 0));
// Tricky
}
$rrule = $this->recurrence->build($p, $rrule_err);
if (FALSE === $rrule) {
// Couldn't build rrule
$this->extended_logs->message('ERROR', 'Error building RRULE (' . $rrule_err . ')');
$this->_throw_exception($this->i18n->_('messages', 'error_bogusrepeatrule') . ': ' . $rrule_err);
}
} else {
// Deleted RRULE
// TODO in the future, consider recurrence-id and so
$rrule = '';
}
$p['rrule'] = $rrule;
}
// Reminders
$reminders = array();
// Contains a list of old parseable (visible on UI) reminders.
// Used to remove reminders that were deleted by user
$visible_reminders = isset($p['visible_reminders']) ? $p['visible_reminders'] : array();
if (isset($p['reminders']) && is_array($p['reminders'])) {
$data_reminders = $p['reminders'];
$num_reminders = count($data_reminders['is_absolute']);
for ($i = 0; $i < $num_reminders; $i++) {
$this_reminder = null;
$data_reminders['is_absolute'][$i] = $data_reminders['is_absolute'][$i] == 'true' ? TRUE : FALSE;
if ($data_reminders['is_absolute'][$i]) {
$when = $this->dates->frontend2datetime($data_reminders['tdate'][$i] . ' ' . $data_reminders['ttime'][$i], $this->tz);
$when->setTimezone($this->tz_utc);
$this_reminder = Reminder::createFrom($when);
} else {
$when = array('before' => $data_reminders['before'][$i] == 'true', 'relatedStart' => $data_reminders['relatedStart'][$i] == 'true');
$interval = $data_reminders['interval'][$i];
$when[$interval] = $data_reminders['qty'][$i];
$this_reminder = Reminder::createFrom($when);
}
if (!empty($data_reminders['order'][$i])) {
$this_reminder->order = $data_reminders['order'][$i];
}
log_message('INTERNALS', 'Adding reminder ' . $this_reminder);
$reminders[] = $this_reminder;
}
}
// Is this a new event or a modification?
// Valid destination calendar?
if (!$this->caldav->is_valid_calendar($this->auth->get_user(), $this->auth->get_passwd(), $p['calendar'])) {
$this->_throw_exception($this->i18n->_('messages', 'error_calendarnotfound', array('%calendar' => $p['calendar'])));
} else {
$calendar = $p['calendar'];
}
if (!isset($p['modification'])) {
// New event (resource)
$new_uid = $this->icshelper->new_resource($p, $resource, $this->tz, $reminders);
$href = $new_uid . '.ics';
$etag = '*';
} else {
// Load existing resource
// Valid original calendar?
if (!isset($p['original_calendar'])) {
$this->_throw_exception($this->i18n->_('messages', 'error_interfacefailure'));
} else {
$original_calendar = $p['original_calendar'];
}
if (!$this->caldav->is_valid_calendar($this->auth->get_user(), $this->auth->get_passwd(), $original_calendar)) {
$this->_throw_exception($this->i18n->_('messages', 'error_calendarnotfound', array('%calendar' => $original_calendar)));
}
$uid = $p['uid'];
$href = $p['href'];
$etag = $p['etag'];
$res = $this->caldav->fetch_resource_by_uid($this->auth->get_user(), $this->auth->get_passwd(), $uid, $original_calendar);
if (is_null($res)) {
$this->_throw_error($this->i18n->_('messages', 'error_eventnotfound'));
}
if ($etag != $res['etag']) {
$this->_throw_error($this->i18n->_('messages', 'error_eventchanged'));
}
$resource = $this->icshelper->parse_icalendar($res['data']);
$timezones = $this->icshelper->get_timezones($resource);
$vevent = null;
// TODO: recurrence-id?
$modify_pos = $this->icshelper->find_component_position($resource, 'VEVENT', array(), $vevent);
if (is_null($vevent)) {
$this->_throw_error($this->i18n->_('messages', 'error_eventnofound'));
}
$tz = $this->icshelper->detect_tz($vevent, $timezones);
// Change every property
$force_new_value = isset($p['allday']) && $p['allday'] == 'true' ? 'DATE' : 'DATE-TIME';
$vevent = $this->icshelper->make_start($vevent, $tz, $start, null, $force_new_value);
$vevent = $this->icshelper->make_end($vevent, $tz, $end, null, $force_new_value);
$properties = array('summary' => $p['summary'], 'location' => $p['location'], 'description' => $p['description']);
// Only change RRULE when we are able to
if (isset($p['rrule'])) {
$properties['rrule'] = $p['rrule'];
}
// CLASS and TRANSP
if (isset($p['class'])) {
$properties['class'] = $p['class'];
}
if (isset($p['transp'])) {
$properties['transp'] = strtoupper($p['transp']);
}
$vevent = $this->icshelper->change_properties($vevent, $properties);
// Add/change/remove reminders
$vevent = $this->icshelper->set_valarms($vevent, $reminders, $visible_reminders);
$vevent = $this->icshelper->set_last_modified($vevent);
$resource = $this->icshelper->replace_component($resource, 'vevent', $modify_pos, $vevent);
if ($resource === FALSE) {
$this->_throw_error($this->i18n->_('messages', 'error_internalgen'));
}
// Moving event between calendars
if ($original_calendar != $calendar) {
// We will need this etag later
$original_etag = $etag;
$etag = '*';
}
}
// PUT on server
$new_etag = $this->caldav->put_resource($this->auth->get_user(), $this->auth->get_passwd(), $href, $calendar, $resource, $etag);
if (FALSE === $new_etag) {
$code = $this->caldav->get_last_response();
switch ($code[0]) {
case '412':
// TODO new events + already used UIDs!
if (isset($p['modification'])) {
$this->_throw_exception($this->i18n->_('messages', 'error_eventchanged'));
} else {
// Already used UID on new event. What a bad luck!
// TODO propose a solution
$this->_throw_error('Bad luck' . ' Repeated UID');
}
break;
case '403':
$this->_throw_error($this->i18n->_('messages', 'error_denied'));
break;
default:
$this->_throw_error($this->i18n->_('messages', 'error_unknownhttpcode', array('%res' => $code[0])));
break;
}
} else {
// Remove original event
if (isset($p['modification']) && $original_calendar != $calendar) {
$res = $this->caldav->delete_resource($this->auth->get_user(), $this->auth->get_passwd(), $href, $original_calendar, $original_etag);
if ($res === TRUE) {
$this->extended_logs->message('INTERNALS', 'Deleted event (moved) with uid=' . $uid . ' from calendar ' . $original_calendar);
} else {
// There was an error
$this->extended_logs->message('INTERNALS', 'Error deleting event (moved) with uid=' . $uid . ' from calendar ' . $original_calendar . ': ' . $res);
$this->_throw_exception($res);
}
}
// Return a list of affected calendars (original_calendar, new
// calendar)
$affected_calendars = array($calendar);
if (isset($original_calendar) && $original_calendar != $calendar) {
$affected_calendars[] = $original_calendar;
}
$this->_throw_success($affected_calendars);
}
}
/**
* Parses a VEVENT resource VALARM definitions
*
* Returns an associative array ('n1#' => new Reminder, 'n2#' => new
* Reminder...), where 'n#' is the order where this VALARM was found
*/
function parse_valarms($vevent, $timezones = array())
{
$parsed_reminders = array();
$order = 0;
while ($valarm = $vevent->getComponent('valarm')) {
$order++;
// TODO parse more actions
$action = $valarm->getProperty('action');
if ($action == 'DISPLAY') {
$trigger = $valarm->getProperty('trigger');
$reminder = null;
if (isset($trigger['before'])) {
// Related to event start/end
$reminder = Reminder::createFrom($trigger);
} else {
// Absolute date-time trigger
$tz = $this->detect_tz($valarm, $timezones, 'trigger');
$datetime = $this->CI->dates->idt2datetime($trigger, $tz);
// Use default timezone
$datetime->setTimezone($this->tz);
$reminder = Reminder::createFrom($datetime);
$reminder->tdate = $datetime->format($this->date_frontend_format);
$reminder->ttime = $datetime->format($this->time_frontend_format);
}
if ($reminder !== null) {
$reminder->order = $order;
$parsed_reminders[$order] = $reminder;
}
}
}
return $parsed_reminders;
}
