implement CalendarManager

Signed-off-by: Georg Ehrke <developer@georgehrke.com>

1 files changed, 140 insertions, 0 deletions

diff --git a/lib/private/Calendar/Manager.php b/lib/private/Calendar/Manager.php
new file mode 100644
index 00000000000..85d501f8ea0
--- /dev/null
+++ b/lib/private/Calendar/Manager.php
@@ -0,0 +1,140 @@
+<?php
+/**
+ * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\Calendar;
+
+use OCP\Calendar\ICalendar;
+
+class Manager implements \OCP\Calendar\IManager {
+
+	/**
+	 * @var ICalendar[] holds all registered calendars
+	 */
+	private $calendars=[];
+
+	/**
+	 * @var \Closure[] to call to load/register calendar providers
+	 */
+	private $calendarLoaders=[];
+
+	/**
+	 * This function is used to search and find objects within the user's calendars.
+	 * In case $pattern is empty all events/journals/todos will be returned.
+	 *
+	 * @param string $pattern which should match within the $searchProperties
+	 * @param array $searchProperties defines the properties within the query pattern should match
+	 * @param array $options - optional parameters:
+	 * 	['timerange' => ['start' => new DateTime(...), 'end' => new DateTime(...)]]
+	 * @param integer|null $limit - limit number of search results
+	 * @param integer|null $offset - offset for paging of search results
+	 * @return array an array of events/journals/todos which are arrays of arrays of key-value-pairs
+	 * @since 13.0.0
+	 */
+	public function search($pattern, array $searchProperties=[], array $options=[], $limit=null, $offset=null) {
+		$this->loadCalendars();
+		$result = [];
+		foreach($this->calendars as $calendar) {
+			$r = $calendar->search($pattern, $searchProperties, $options, $limit, $offset);
+			foreach($r as $o) {
+				$o['calendar-key'] = $calendar->getKey();
+				$result[] = $o;
+			}
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Check if calendars are available
+	 *
+	 * @return bool true if enabled, false if not
+	 * @since 13.0.0
+	 */
+	public function isEnabled() {
+		return !empty($this->calendars) || !empty($this->calendarLoaders);
+	}
+
+	/**
+	 * Registers a calendar
+	 *
+	 * @param ICalendar $calendar
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function registerCalendar(ICalendar $calendar) {
+		$this->calendars[$calendar->getKey()] = $calendar;
+	}
+
+	/**
+	 * Unregisters a calendar
+	 *
+	 * @param ICalendar $calendar
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function unregisterCalendar(ICalendar $calendar) {
+		unset($this->calendars[$calendar->getKey()]);
+	}
+
+	/**
+	 * In order to improve lazy loading a closure can be registered which will be called in case
+	 * calendars are actually requested
+	 *
+	 * @param \Closure $callable
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function register(\Closure $callable) {
+		$this->calendarLoaders[] = $callable;
+	}
+
+	/**
+	 * @return ICalendar[]
+	 * @since 13.0.0
+	 */
+	public function getCalendars() {
+		$this->loadCalendars();
+
+		return array_values($this->calendars);
+	}
+
+	/**
+	 * removes all registered calendar instances
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function clear() {
+		$this->calendars = [];
+		$this->calendarLoaders = [];
+	}
+
+	/**
+	 * loads all calendars
+	 */
+	private function loadCalendars() {
+		foreach($this->calendarLoaders as $callable) {
+			$callable($this);
+		}
+		$this->calendarLoaders = [];
+	}
+}