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<?php |
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namespace smtech\CanvasICSSync\SyncIntoCanvas; |
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use vevent; |
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class Event extends Syncable |
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{ |
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/** |
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* Wrapped VEVENT |
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* @var vevent |
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*/ |
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protected $vevent; |
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/** |
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* Calendar ID |
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* @var string |
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*/ |
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protected $calendar; |
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/** |
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* Unique hash identifying this event |
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* @var string |
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*/ |
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protected $hash; |
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protected $canvasId; |
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public function __construct($veventOrHash, $calendar, $calendarEventId = null) |
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{ |
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if (empty($veventOrHash)) { |
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throw new Exception("Valid VEVENT or hash required"); |
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} |
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if (is_a($veventOrHash, vevent::class)) { |
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$this->vevent = $veventOrHash; |
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} else { |
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$this->hash = (string) $veventOrHash; |
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} |
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if (empty($calendar)) { |
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throw new Exception("Calendar ID required"); |
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} |
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$this->calendar = (string) $calendar; |
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$this->getHash(); |
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} |
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public function getProperty($property) |
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{ |
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return (empty($this->vevent) ? false : $this->vevent->getProperty($property)); |
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} |
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const FIELD_MAP = [ |
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'calendar_event[title]' => 'SUMMARY', |
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'calendar_event[description]' => 'DESCRIPTION', |
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'calendar_event[start_at]' => [ |
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0 => 'X-CURRENT-DTSTART', |
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1 => 'DTSTART' |
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], |
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'calendar_event[end_at]' => [ |
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0 => 'X-CURRENT-DTEND', |
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1 => 'DTEND' |
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], |
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'calendar_event[location_name]' => 'LOCATION' |
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]; |
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/** |
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* Generate a hash of this version of an event to cache in the database |
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**/ |
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public function getHash($algorithm = 'md5') |
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{ |
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if (empty($this->hash)) { |
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$blob = ''; |
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foreach (static::$FIELD_MAP as $field) { |
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if (is_array($field)) { |
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foreach ($field as $option) { |
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if (!empty($property = $this->getProperty($option))) { |
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$blob .= serialize($property); |
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break; |
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} |
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} |
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} else { |
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if (!empty($property = $this->getProperty($field))) { |
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$blob .= serialize($property); |
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} |
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} |
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} |
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$this->hash = hash($algorithm, $blob); |
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} |
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return $this->hash; |
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} |
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public function isCached() |
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{ |
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return !empty(static::load($this->getHash(), $this->calendar)); |
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} |
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public function save() |
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{ |
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$db = static::getDatabase(); |
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$find = $db->prepare( |
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"SELECT * |
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FROM `events` |
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WHERE |
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`event_hash` = :event_hash AND |
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`calendar` = :calendar" |
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); |
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$update = $db->prepare( |
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"UPDATE `events` |
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SET |
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`calendar` = :calendar, |
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`calendar_event[id]` = :calendar_event_id" |
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) |
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} |
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public static function load($id, $calendar) |
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{ |
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$find = static::getDatabase()->prepare( |
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"SELECT * |
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FROM `events` |
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WHERE |
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`event_hash` = :event_hash AND |
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`calendar` = :calendar" |
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); |
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$find->execute([ |
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'event_hash' => $id, |
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'calendar' => $calendar |
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]); |
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if (($cache = $find->fetch()) !== false) { |
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return new Event($cache['event_hash'], $cache['calendar']); |
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} |
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return null; |
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} |
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} |
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smtech /
canvas-ics-sync
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