egroupware/calendar/inc/class.calendar_import_ical.inc.php

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<?php
/**
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* EGroupWare iCal import plugin
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package calendar
* @subpackage importexport
* @link http://www.egroupware.org
* @author Nathan Gray
* @copyright Nathan Gray
* @version $Id$
*/
use \EGroupware\Api;
/**
* import ical for calendar
*/
class calendar_import_ical implements importexport_iface_import_plugin {
private static $plugin_options = array(
'fieldsep', // char
'charset', // string
'owner', // int
'update_cats', // string {override|add} overides record
// with cat(s) from csv OR add the cat from
// csv file to exeisting cat(s) of record
'num_header_lines', // int number of header lines
'field_conversion', // array( $csv_col_num => conversion)
'field_mapping', // array( $csv_col_num => adb_filed)
'conditions', /* => array containing condition arrays:
'type' => exists, // exists
'string' => '#kundennummer',
'true' => array(
'action' => update,
'last' => true,
),
'false' => array(
'action' => insert,
'last' => true,
),*/
);
/**
* actions wich could be done to data entries
*/
protected static $actions = array();
/**
* conditions for actions
*
* @var array
*/
protected static $conditions = array();
/**
* @var definition
*/
private $definition;
/**
* @var bo
*/
private $bo;
/**
* For figuring out if an entry has changed
*/
protected $tracking;
/**
* @var bool
*/
private $dry_run = false;
/**
* @var bool is current user admin?
*/
private $is_admin = false;
/**
* @var int
*/
private $user = null;
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/**
* List of import warnings
*/
protected $warnings = array();
/**
* List of import errors
*/
protected $errors = array();
/**
* List of actions, and how many times that action was taken
*/
protected $results = array();
/**
* imports entries according to given definition object.
* @param resource $_stream
* @param string $_charset
* @param definition $_definition
*/
public function import( $_stream, importexport_definition $_definition ) {
$this->definition = $_definition;
// user, is admin ?
$this->user = $GLOBALS['egw_info']['user']['account_id'];
// dry run?
$this->dry_run = isset( $_definition->plugin_options['dry_run'] ) ? $_definition->plugin_options['dry_run'] : false;
// fetch the addressbook bo
$this->bo= new calendar_boupdate();
// Failures
$this->errors = array();
@set_time_limit(0); // try switching execution time limit off
$calendar_ical = new calendar_ical;
$calendar_ical->setSupportedFields('file', '');
if($this->dry_run)
{
// No real dry run for iCal
echo lang("No preview for iCal");
return;
}
// switch off notifications by default
$plugin_options = $_definition->plugin_options;
if (!array_key_exists('no_notification', $_definition->plugin_options))
{
$plugin_options['no_notification'] = true;
$_definition->plugin_options = $plugin_options;
}
// Set owner, if not set will be null (current user)
$owner = $plugin_options['cal_owner'];
// Purge
if($plugin_options['empty_before_import'])
{
$remove_past = new Api\DateTime();
$remove_future = new Api\DateTime();
$plugin_options = array_merge(array('remove_past' => 100, 'remove_future' => 365), $plugin_options);
foreach(array('remove_past','remove_future') as $date)
{
${$date}->add( (($date == 'remove_past' ? -1 : 1) * (int)$plugin_options[$date]) . ' days');
}
$this->purge_calendar(
$owner,
array('from' => $remove_past, 'to' => $remove_future),
$plugin_options['no_notification']
);
}
// User wants conflicting events to not be imported
if($_definition->plugin_options['skip_conflicts'])
{
$calendar_ical->conflict_callback = array($this, 'conflict_warning');
}
if (!$calendar_ical->importVCal($_stream, -1,null,false,0,'',$owner,null,null,$_definition->plugin_options['no_notification']))
{
$this->errors[] = lang('Error: importing the iCal');
}
else
{
$this->results['imported'] += $calendar_ical->events_imported;
}
return $calendar_ical->events_imported;
}
/**
* Add a warning message about conflicting events
*
* @param int $record_num Current record index
* @param Array $conflicts List of found conflicting events
*/
public function conflict_warning(&$event, &$conflicts)
{
$warning = EGroupware\Api\DateTime::to($event['start']) . ' ' . $event['title'] . ' ' . lang('Conflicts') . ':';
foreach($conflicts as $conflict)
{
$warning .= "<br />\n" . EGroupware\Api\DateTime::to($conflict['start']) . "\t" . $conflict['title'];
}
$this->warnings[] = $warning;
// iCal will always count as imported, even if it wasn't
$this->results['imported'] -= 1;
$this->results['skipped']++;
}
/**
* Empty the calendar before importing
*
* @param string $owner
* @param array|string $timespan
*/
protected function purge_calendar($owner, $timespan, $skip_notification)
{
if(!$owner)
{
$owner = $GLOBALS['egw_info']['user']['account_id'];
}
if(!is_array($timespan))
{
$timespan = importexport_helper_functions::date_rel2abs($timespan);
}
if (!$timespan)
{
return;
}
// Get events in timespan
$events = $this->bo->search(array(
'start' => $timespan['from'],
'end' => $timespan['to'],
'users' => $owner,
'num_rows' => -1
));
// Delete
foreach($events as $event)
{
$result = $this->bo->delete($event['id'], $event['recur_date'], true, $skip_notification);
if($result)
{
$this->results['deleted']++;
}
}
}
/**
* returns translated name of plugin
*
* @return string name
*/
public static function get_name() {
return lang('Calendar iCal import');
}
/**
* returns translated (user) description of plugin
*
* @return string descriprion
*/
public static function get_description() {
return lang("Imports events into your Calendar from an iCal File.");
}
/**
* retruns file suffix(s) plugin can handle (e.g. csv)
*
* @return string suffix (comma seperated)
*/
public static function get_filesuffix() {
return 'ics';
}
/**
* return etemplate components for options.
* @abstract We can't deal with etemplate objects here, as an uietemplate
* objects itself are scipt orientated and not "dialog objects"
*
* @return array (
* name => string,
* content => array,
* sel_options => array,
* preserv => array,
* )
*/
public function get_options_etpl() {
// lets do it!
}
/**
* returns etemplate name for slectors of this plugin
*
* @return string etemplate name
*/
public function get_selectors_etpl() {
// lets do it!
}
/**
* Filter while importing
*
* The only one currently supported is purge range, nothing on actual fields
*
* @see importexport_helper_functions::get_filter_fields
*
* @param array $fields
*/
public function get_filter_fields(&$fields) {
$fields = array(
'purge' => array(
'type' => 'date',
'name' =>'purge',
'label'=>'Empty target calendar before importing',
'empty_label' => 'No'
)
);
}
/**
* Get the class name for the egw_record to use
*
* @return string;
*/
public static function get_egw_record_class()
{
return 'calendar_egw_record';
}
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/**
* Returns warnings that were encountered during importing
* Maximum of one warning message per record, but you can append if you need to
*
* @return Array (
* record_# => warning message
* )
*/
public function get_warnings() {
return $this->warnings;
}
/**
* Returns errors that were encountered during importing
* Maximum of one error message per record, but you can append if you need to
*
* @return Array (
* record_# => error message
* )
*/
public function get_errors() {
return $this->errors;
}
/**
* Returns a list of actions taken, and the number of records for that action.
* Actions are things like 'insert', 'update', 'delete', and may be different for each plugin.
*
* @return Array (
* action => record count
* )
*/
public function get_results() {
return $this->results;
}
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}