Public interfaces for calendar API

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

lib/public/Calendar/ICalendar.php

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+<?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 OCP\Calendar;
+
+/**
+ * Interface ICalendar
+ *
+ * @package OCP
+ * @since 13.0.0
+ */
+interface ICalendar {
+
+	/**
+	 * @return string defining the technical unique key
+	 * @since 13.0.0
+	 */
+	public function getKey();
+
+	/**
+	 * In comparison to getKey() this function returns a human readable (maybe translated) name
+	 * @return null|string
+	 * @since 13.0.0
+	 */
+	public function getDisplayName();
+
+	/**
+	 * @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 $offset - offset for paging of search results
+	 * @return array an array of events/journals/todos which are arrays of key-value-pairs
+	 * @since 13.0.0
+	 */
+	public function search($pattern, $searchProperties=[], $options=[], $limit, $offset);
+
+	/**
+	 * @return integer build up using \OCP\Constants
+	 * @since 13.0.0
+	 */
+	public function getPermissions();
+}

lib/public/Calendar/IManager.php

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+<?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 OCP\Calendar;
+
+/**
+ * This class provides access to the Nextcloud CalDAV backend.
+ * Use this class exclusively if you want to access calendars.
+ *
+ * Events/Journals/Todos in general will be expressed as an array of key-value-pairs.
+ * The keys will match the property names defined in https://tools.ietf.org/html/rfc5545
+ *
+ * [
+ *   'id' => 123,
+ *   'type' => 'VEVENT',
+ *   'objects' => [
+ *     [
+ *       'SUMMARY' => ['FooBar', []],
+ *       'DTSTART' => ['20171001T123456', ['TZID' => 'EUROPE/BERLIN']],
+ *       'DURATION' => ['P1D', []],
+ * 	     'ATTENDEE' => [
+ *         ['mailto:bla@blub.com', ['CN' => 'Mr. Bla Blub']]
+ *       ],
+ *       'VALARM' => [
+ * 	       [
+ *           'TRIGGER' => ['19980101T050000Z', ['VALUE' => DATE-TIME]]
+ *         ]
+ *       ]
+ *     ],
+ *   ]
+ * ]
+ *
+ * @since 13.0.0
+ */
+interface IManager {
+
+	/**
+	 * 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 $offset - offset for paging of search results
+	 * @return array an array of events/journals/todos which are arrays of arrays of key-value-pairs
+	 * @since 13.0.0
+	 */
+	public function search($pattern, $searchProperties=[], $options=[], $limit = null, $offset = 0);
+
+	/**
+	 * Check if calendars are available
+	 *
+	 * @return bool true if enabled, false if not
+	 * @since 13.0.0
+	 */
+	public function isEnabled();
+
+	/**
+	 * Registers a calendar
+	 *
+	 * @param ICalendar $calendar
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function registerCalendar(ICalendar $calendar);
+
+	/**
+	 * Unregisters a calendar
+	 *
+	 * @param ICalendar $calendar
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function unregisterCalendar(ICalendar $calendar);
+
+	/**
+	 * 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);
+
+	/**
+	 * @return array
+	 * @since 13.0.0
+	 */
+	public function getCalendars();
+
+	/**
+	 * removes all registered calendar instances
+	 * @return void
+	 * @since 13.0.0
+	 */
+	public function clear();
+}