Start working on calendar activities

Signed-off-by: Joas Schilling <coding@schilljs.com>

3 files changed, 351 insertions, 1 deletions

diff --git a/apps/dav/lib/AppInfo/Application.php b/apps/dav/lib/AppInfo/Application.php
index 2bdcff9cf84..d073131f00e 100644
--- a/apps/dav/lib/AppInfo/Application.php
+++ b/apps/dav/lib/AppInfo/Application.php
@@ -24,6 +24,7 @@
  */
 namespace OCA\DAV\AppInfo;
 
+use OCA\DAV\CalDAV\Activity;
 use OCA\DAV\CalDAV\BirthdayService;
 use OCA\DAV\Capabilities;
 use OCA\DAV\CardDAV\ContactsManager;
@@ -88,6 +89,11 @@ class Application extends App {
 				);
 			}
 		});
+
+		$aM = $this->getContainer()->getServer()->getActivityManager();
+		$aM->registerExtension(function() {
+			return $this->getContainer()->query(Activity::class);
+		});
 	}
 
 	public function getSyncService() {
diff --git a/apps/dav/lib/CalDAV/Activity.php b/apps/dav/lib/CalDAV/Activity.php
new file mode 100644
index 00000000000..2f27a5bf071
--- /dev/null
+++ b/apps/dav/lib/CalDAV/Activity.php
@@ -0,0 +1,250 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.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 OCA\DAV\CalDAV;
+
+use OCP\Activity\IExtension;
+use OCP\Activity\IManager;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\L10N\IFactory;
+
+class Activity implements IExtension {
+	const APP = 'dav';
+	/**
+	 * Filter with all sharing related activities
+	 */
+	const CALENDAR = 'calendar';
+
+	/**
+	 * Activity types known to this extension
+	 */
+	const SUBJECT_ADD = 'calendar_add';
+	const SUBJECT_UPDATE = 'calendar_update';
+	const SUBJECT_DELETE = 'calendar_delete';
+
+	/**
+	 * Subject keys for translation of the subjections
+	 */
+
+	/** @var IFactory */
+	protected $languageFactory;
+
+	/** @var IURLGenerator */
+	protected $URLGenerator;
+
+	/**
+	 * @param IFactory $languageFactory
+	 * @param IURLGenerator $URLGenerator
+	 */
+	public function __construct(IFactory $languageFactory, IURLGenerator $URLGenerator) {
+		$this->languageFactory = $languageFactory;
+		$this->URLGenerator = $URLGenerator;
+	}
+
+	protected function getL10N($languageCode = null) {
+		return $this->languageFactory->get(self::APP, $languageCode);
+	}
+
+	/**
+	 * The extension can return an array of additional notification types.
+	 * If no additional types are to be added false is to be returned
+	 *
+	 * @param string $languageCode
+	 * @return array|false
+	 */
+	public function getNotificationTypes($languageCode) {
+		$l = $this->getL10N($languageCode);
+
+		return array(
+			self::CALENDAR => (string) $l->t('A <strong>calendar</strong> was modified'),
+		);
+	}
+
+	/**
+	 * For a given method additional types to be displayed in the settings can be returned.
+	 * In case no additional types are to be added false is to be returned.
+	 *
+	 * @param string $method
+	 * @return array|false
+	 */
+	public function getDefaultTypes($method) {
+		$defaultTypes = [];
+		if ($method === self::METHOD_STREAM) {
+			$defaultTypes[] = self::CALENDAR;
+		}
+
+		return $defaultTypes;
+	}
+
+	/**
+	 * A string naming the css class for the icon to be used can be returned.
+	 * If no icon is known for the given type false is to be returned.
+	 *
+	 * @param string $type
+	 * @return string|false
+	 */
+	public function getTypeIcon($type) {
+		switch ($type) {
+			case self::CALENDAR:
+				return 'icon-calendar-dark';
+		}
+
+		return false;
+	}
+
+	/**
+	 * The extension can translate a given message to the requested languages.
+	 * If no translation is available false is to be returned.
+	 *
+	 * @param string $app
+	 * @param string $text
+	 * @param array $params
+	 * @param boolean $stripPath
+	 * @param boolean $highlightParams
+	 * @param string $languageCode
+	 * @return string|false
+	 */
+	public function translate($app, $text, $params, $stripPath, $highlightParams, $languageCode) {
+		if ($app !== self::APP) {
+			return false;
+		}
+
+		$l = $this->getL10N($languageCode);
+
+		switch ($text) {
+			case self::SUBJECT_ADD:
+				return (string) $l->t('%1$s created calendar %2$s', $params);
+			case self::SUBJECT_ADD . '_self':
+				return (string) $l->t('You created calendar %2$s', $params);
+			case self::SUBJECT_DELETE:
+				return (string) $l->t('%1$s deleted calendar %2$s', $params);
+			case self::SUBJECT_DELETE . '_self':
+				return (string) $l->t('You deleted calendar %2$s', $params);
+			case self::SUBJECT_UPDATE:
+				return (string) $l->t('%1$s updated calendar %2$s', $params);
+			case self::SUBJECT_UPDATE . '_self':
+				return (string) $l->t('You updated calendar %2$s', $params);
+		}
+
+		return false;
+	}
+
+	/**
+	 * The extension can define the type of parameters for translation
+	 *
+	 * Currently known types are:
+	 * * file		=> will strip away the path of the file and add a tooltip with it
+	 * * username	=> will add the avatar of the user
+	 *
+	 * @param string $app
+	 * @param string $text
+	 * @return array|false
+	 */
+	public function getSpecialParameterList($app, $text) {
+		if ($app === self::APP) {
+			switch ($text) {
+				case self::SUBJECT_ADD:
+				case self::SUBJECT_DELETE:
+				case self::SUBJECT_UPDATE:
+					return [
+						0 => 'username',
+						//1 => 'calendar',
+					];
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * The extension can define the parameter grouping by returning the index as integer.
+	 * In case no grouping is required false is to be returned.
+	 *
+	 * @param array $activity
+	 * @return integer|false
+	 */
+	public function getGroupParameter($activity) {
+		return false;
+	}
+
+	/**
+	 * The extension can define additional navigation entries. The array returned has to contain two keys 'top'
+	 * and 'apps' which hold arrays with the relevant entries.
+	 * If no further entries are to be added false is no be returned.
+	 *
+	 * @return array|false
+	 */
+	public function getNavigation() {
+		$l = $this->getL10N();
+		return [
+			'apps' => [
+				self::CALENDAR => [
+					'id' => self::CALENDAR,
+					'icon' => 'icon-calendar-dark',
+					'name' => (string) $l->t('Calendar'),
+					'url' => $this->URLGenerator->linkToRoute('activity.Activities.showList', ['filter' => self::CALENDAR]),
+				],
+			],
+			'top' => [],
+		];
+	}
+
+	/**
+	 * The extension can check if a custom filter (given by a query string like filter=abc) is valid or not.
+	 *
+	 * @param string $filterValue
+	 * @return boolean
+	 */
+	public function isFilterValid($filterValue) {
+		return $filterValue === self::CALENDAR;
+	}
+
+	/**
+	 * The extension can filter the types based on the filter if required.
+	 * In case no filter is to be applied false is to be returned unchanged.
+	 *
+	 * @param array $types
+	 * @param string $filter
+	 * @return array|false
+	 */
+	public function filterNotificationTypes($types, $filter) {
+		switch ($filter) {
+			case self::CALENDAR:
+				return array_intersect([self::CALENDAR], $types);
+		}
+		return false;
+	}
+
+	/**
+	 * For a given filter the extension can specify the sql query conditions including parameters for that query.
+	 * In case the extension does not know the filter false is to be returned.
+	 * The query condition and the parameters are to be returned as array with two elements.
+	 * E.g. return array('`app` = ? and `message` like ?', array('mail', 'ownCloud%'));
+	 *
+	 * @param string $filter
+	 * @return array|false
+	 */
+	public function getQueryForFilter($filter) {
+		return false;
+	}
+
+}
diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index 07b61285eca..40488a2c752 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -31,6 +31,8 @@ use OCA\DAV\Connector\Sabre\Principal;
 use OCA\DAV\DAV\Sharing\Backend;
 use OCP\IConfig;
 use OCP\IDBConnection;
+use OCP\IGroup;
+use OCP\IGroupManager;
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\Security\ISecureRandom;
@@ -613,7 +615,11 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 			$query->setValue($column, $query->createNamedParameter($value));
 		}
 		$query->execute();
-		return $query->getLastInsertId();
+		$calendarId = $query->getLastInsertId();
+
+		$this->triggerActivity(Activity::SUBJECT_ADD, $calendarId, $values);
+
+		return $calendarId;
 	}
 
 	/**
@@ -661,6 +667,8 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 
 			$this->addChange($calendarId, "", 2);
 
+			$this->triggerActivity(Activity::SUBJECT_UPDATE, $calendarId, $mutations);
+
 			return true;
 		});
 	}
@@ -672,6 +680,8 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 	 * @return void
 	 */
 	function deleteCalendar($calendarId) {
+		$this->triggerActivity(Activity::SUBJECT_DELETE, $calendarId);
+
 		$stmt = $this->db->prepare('DELETE FROM `*PREFIX*calendarobjects` WHERE `calendarid` = ?');
 		$stmt->execute([$calendarId]);
 
@@ -1722,4 +1732,88 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 		}
 		return $principalUri;
 	}
+
+	protected function triggerActivity($action, $calendarId, array $changedProperties = []) {
+		$aM = \OC::$server->getActivityManager();
+		$userSession = \OC::$server->getUserSession();
+
+		$properties = $this->getCalendarById($calendarId);
+		if (!isset($properties['principaluri'])) {
+			return;
+		}
+
+		$principaluri = explode('/', $properties['principaluri']);
+		$owner = array_pop($principaluri);
+
+		$currentUser = $userSession->getUser();
+		if ($currentUser instanceof IUser) {
+			$currentUser = $currentUser->getUID();
+		} else {
+			$currentUser = $owner;
+		}
+
+		$event = $aM->generateEvent();
+		$event->setApp('dav')
+			->setObject(Activity::CALENDAR, $calendarId)
+			->setType(Activity::CALENDAR)
+			->setAuthor($currentUser);
+
+		$changedVisibleInformation = array_intersect([
+			'{DAV:}displayname',
+			'{http://apple.com/ns/ical/}calendar-color'
+		], array_keys($changedProperties));
+
+		if ($action === Activity::SUBJECT_UPDATE && empty($changedVisibleInformation)) {
+			$users = [$owner];
+		} else {
+			$users = $this->getUsersForCalendar($calendarId);
+			$users[] = $owner;
+		}
+
+		foreach ($users as $user) {
+			$event->setAffectedUser($user)
+				->setSubject(
+					$user === $currentUser ? $action . '_self' : $action,
+					[
+						$currentUser,
+						$properties['{DAV:}displayname'],
+					]
+				);
+			$aM->publish($event);
+		}
+	}
+
+	/**
+	 * Get all users that have access to a given calendar
+	 *
+	 * @param int $calendarId
+	 * @return string[]
+	 */
+	protected function getUsersForCalendar($calendarId) {
+		$gM = \OC::$server->getGroupManager();
+
+		$users = $groups = [];
+		$shares = $this->getShares($calendarId);
+		foreach ($shares as $share) {
+			$prinical = explode('/', $share['{http://owncloud.org/ns}principal']);
+			if ($prinical[1] === 'users') {
+				$users[] = $prinical[2];
+			} else if ($prinical[1] === 'groups') {
+				$groups[] = $prinical[2];
+			}
+		}
+
+		if (!empty($groups)) {
+			foreach ($groups as $gid) {
+				$group = $gM->get($gid);
+				if ($group instanceof IGroup) {
+					foreach ($group->getUsers() as $user) {
+						$users[] = $user->getUID();
+					}
+				}
+			}
+		}
+
+		return $users;
+	}
 }