From be37104ac63cd25f2eac831ca03d6d2b19976e1c Mon Sep 17 00:00:00 2001
From: cash <cash@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Sun, 22 Aug 2010 21:53:48 +0000
Subject: Merged r6684:6694 from 1.7 branch to trunk (pages plugin was manually
 merged due to standardization of code in trunk but not branch)

git-svn-id: http://code.elgg.org/elgg/trunk@6848 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 mod/notifications/start.php | 86 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)

(limited to 'mod/notifications')

diff --git a/mod/notifications/start.php b/mod/notifications/start.php
index fa36d5d69..3349d0194 100644
--- a/mod/notifications/start.php
+++ b/mod/notifications/start.php
@@ -27,6 +27,10 @@ function notifications_plugin_init() {
 	// update notifications based on relationships changing
 	register_elgg_event_handler('delete', 'member', 'notifications_relationship_remove');
 	register_elgg_event_handler('delete', 'friend', 'notifications_relationship_remove');
+
+	// update notifications when new friend or access collection membership
+	register_elgg_event_handler('create', 'friend', 'notifications_update_friend_notify');
+	register_plugin_hook('access:collections:add_user', 'collection', 'notifications_update_collection_notify');
 }
 
 /**
@@ -88,7 +92,89 @@ function notifications_relationship_remove($event, $object_type, $relationship)
 	}
 }
 
+/**
+ * Turn on notifications for new friends if all friend notifications is on
+ *
+ * @param string $event
+ * @param string $object_type
+ * @param object $relationship
+ */
+function notifications_update_friend_notify($event, $object_type, $relationship) {
+	global $NOTIFICATION_HANDLERS;
+
+	$user_guid = $relationship->guid_one;
+	$friend_guid = $relationship->guid_two;
+
+	$user = get_entity($user_guid);
+
+	// loop through all notification types
+	foreach ($NOTIFICATION_HANDLERS as $method => $foo) {
+		$metaname = 'collections_notifications_preferences_' . $method;
+		$collections_preferences = $user->$metaname;
+		if ($collections_preferences) {
+			if (!empty($collections_preferences) && !is_array($collections_preferences)) {
+				$collections_preferences = array($collections_preferences);
+			}
+			if (is_array($collections_preferences)) {
+				// -1 means all friends is on - should be a define
+				if (in_array(-1, $collections_preferences)) {
+					add_entity_relationship($user_guid, 'notify' . $method, $friend_guid);
+				}
+			}
+		}
+	}
+}
+
+/**
+ * Update notifications for changes in access collection membership.
+ *
+ * This function assumes that only friends can belong to access collections.
+ *
+ * @param string $event
+ * @param string $object_type
+ * @param bool $returnvalue
+ * @param array $params
+ */
+function notifications_update_collection_notify($event, $object_type, $returnvalue, $params) {
+	global $NOTIFICATION_HANDLERS;
+
+	// only update notifications for user owned collections
+	$collection_id = $params['collection_id'];
+	$collection = get_access_collection($collection_id);
+	$user = get_entity($collection->owner_guid);
+	if (!($user instanceof ElggUser)) {
+		return $returnvalue;
+	}
 
+	$member_guid = $params['user_guid'];
+
+	// loop through all notification types
+	foreach ($NOTIFICATION_HANDLERS as $method => $foo) {
+		$metaname = 'collections_notifications_preferences_' . $method;
+		$collections_preferences = $user->$metaname;
+		if (!$collections_preferences) {
+			continue;
+		}
+		if (!is_array($collections_preferences)) {
+			$collections_preferences = array($collections_preferences);
+		}
+		if (in_array(-1, $collections_preferences)) {
+			// if "all friends" notify is on, we don't change any notifications
+			// since must be a friend to be in an access collection
+			continue;
+		}
+		if (in_array($collection_id, $collections_preferences)) {
+			// notifications are on for this collection so we add/remove
+			if ($event == 'access:collections:add_user') {
+				add_entity_relationship($user->guid, "notify$method", $member_guid);
+			} elseif ($event == 'access:collections:remove_user') {
+				// removing someone from an access collection is not a guarantee
+				// that they should be removed from notifications
+				//remove_entity_relationship($user->guid, "notify$method", $member_guid);
+			}
+		}
+	}
+}
 
 register_elgg_event_handler('init', 'system', 'notifications_plugin_init', 1000);
 
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