1 files changed, 58 insertions, 0 deletions
diff --git a/mod/groups/actions/discussion/reply/save.php b/mod/groups/actions/discussion/reply/save.php
new file mode 100644
index 000000000..f8be8aa2c
--- /dev/null
+++ b/mod/groups/actions/discussion/reply/save.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * Post a reply to discussion topic
+ *
+ */
+
+// Get input
+$entity_guid = (int) get_input('entity_guid');
+$text = get_input('group_topic_post');
+$annotation_id = (int) get_input('annotation_id');
+
+// reply cannot be empty
+if (empty($text)) {
+	register_error(elgg_echo('grouppost:nopost'));
+	forward(REFERER);
+}
+
+$topic = get_entity($entity_guid);
+if (!$topic) {
+	register_error(elgg_echo('grouppost:nopost'));
+	forward(REFERER);
+}
+
+$user = elgg_get_logged_in_user_entity();
+
+$group = $topic->getContainerEntity();
+if (!$group->canWriteToContainer()) {
+	register_error(elgg_echo('groups:notmember'));
+	forward(REFERER);
+}
+
+// if editing a reply, make sure it's valid
+if ($annotation_id) {
+	$annotation = elgg_get_annotation_from_id($annotation_id);
+	if (!$annotation->canEdit()) {
+		register_error(elgg_echo('groups:notowner'));
+		forward(REFERER);
+	}
+
+	$annotation->value = $text;
+	if (!$annotation->save()) {
+		system_message(elgg_echo('groups:forumpost:error'));
+		forward(REFERER);
+	}
+	system_message(elgg_echo('groups:forumpost:edited'));
+} else {
+	// add the reply to the forum topic
+	$reply_id = $topic->annotate('group_topic_post', $text, $topic->access_id, $user->guid);
+	if ($reply_id == false) {
+		system_message(elgg_echo('groupspost:failure'));
+		forward(REFERER);
+	}
+
+	add_to_river('river/annotation/group_topic_post/reply', 'reply', $user->guid, $topic->guid, "", 0, $reply_id);
+	system_message(elgg_echo('groupspost:success'));
+}
+
+forward(REFERER);