prevent duplicate likes

diff --git a/include/items.php b/include/items.php
index 3c55fbb4f09c6ce6ee8bf938b73230c111de15d4..fdff6b642fa33139681f4aa48c7e4f087ffed721 100755 (executable)
--- a/include/items.php
+++ b/include/items.php
@@ -1595,6 +1595,14 @@ function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0)
                                if((activity_match($datarray['verb'],ACTIVITY_LIKE)) || (activity_match($datarray['verb'],ACTIVITY_DISLIKE))) {
                                        $datarray['type'] = 'activity';
                                        $datarray['gravity'] = GRAVITY_LIKE;
+                                       // only one like or dislike per person
+                                       $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 limit 1",
+                                               intval($datarray['uid']),
+                                               intval($datarray['contact-id']),
+                                               dbesc($datarray['verb'])
+                                       );
+                                       if($r && count($r))
+                                               continue; 
                                }
 
                                if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
@@ -2148,6 +2156,14 @@ function local_delivery($importer,$data) {
                                        $datarray['type'] = 'activity';
                                        $datarray['gravity'] = GRAVITY_LIKE;
                                        $datarray['last-child'] = 0;
+                                       // only one like or dislike per person
+                                       $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 limit 1",
+                                               intval($datarray['uid']),
+                                               intval($datarray['contact-id']),
+                                               dbesc($datarray['verb'])
+                                       );
+                                       if($r && count($r))
+                                               continue; 
                                }
 
                                if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {
@@ -2297,6 +2313,15 @@ function local_delivery($importer,$data) {
                                if(($datarray['verb'] == ACTIVITY_LIKE) || ($datarray['verb'] == ACTIVITY_DISLIKE)) {
                                        $datarray['type'] = 'activity';
                                        $datarray['gravity'] = GRAVITY_LIKE;
+                                       // only one like or dislike per person
+                                       $r = q("select id from item where uid = %d and `contact-id` = %d and verb ='%s' and deleted = 0 limit 1",
+                                               intval($datarray['uid']),
+                                               intval($datarray['contact-id']),
+                                               dbesc($datarray['verb'])
+                                       );
+                                       if($r && count($r))
+                                               continue; 
+
                                }
 
                                if(($datarray['verb'] === ACTIVITY_TAG) && ($datarray['object-type'] === ACTIVITY_OBJ_TAGTERM)) {