Implement Undo(Like) and Undo(EmojiRact)

src/controller/inbox.c

@@ -59,12 +59,46 @@ static bool route_undo_Announce( struct ap_object* act )
 }
 static bool route_undo_Like( struct ap_object* act )
 {
+	bool result = false;
 	struct status* s = NULL;
+	struct account* a = NULL;
+
 	s = status_from_uri( act->object.ptr->id );
-	if( !s ) { return true; } // Satus not local, discard
+	if( !s ) { goto discard; } // Satus not local, discard
+
+	a = account_from_uri( act->actor );
+	if( !a )
 
+	status_remove_like( s, a );
+	goto cleanup;
+cleanup:
 	status_free(s);
-	return false;
+	account_free(a);
+	return result;
+discard:
+	result = true;
+	goto cleanup;
+}
+static bool route_undo_EmojiReact( struct ap_object* act )
+{
+	bool result = false;
+	struct status* s = NULL;
+	struct account* a = NULL;
+	s = status_from_uri( act->object.ptr->id );
+	if( !s ) { goto discard; }
+
+	a = account_from_uri( act->object.ptr->actor );
+	if( !a ) { goto discard; }
+
+	status_remove_react( s, act->object.ptr->content.content, a );
+	goto discard;
+cleanup:
+	account_free(a);
+	status_free(s);
+	return result;
+discard:
+	result = true;
+	goto cleanup;
 }
 
 static bool route_undo_activity( struct ap_object* act )
@@ -81,7 +115,8 @@ static bool route_undo_activity( struct ap_object* act )
 	switch( act->object.ptr->type ) {
 		case ap_Follow:		return route_undo_follow( act );
 		case ap_Announce:		return route_undo_Announce( act );
-		case ap_Like:		return route_undo_Like( act );
+		case ap_Like:			return route_undo_Like( act );
+		case pleroma_EmojiReact:	return route_undo_EmojiReact(act);
 		default:
 			printf( "Unhandled object activity type %d in undo\n", act->object.ptr->type );
 			return false;

src/model/status.c

@@ -772,6 +772,28 @@ void status_add_like( struct status* s, struct account* a )
 
 	status_save(s);
 }
+void status_remove_like( struct status* s, struct account* a )
+{
+	for( int i = 0; i < s->likes.count; ++i ) {
+		if( s->likes.items[i] == a->id ) {
+			// Swap with last element
+			s->likes.items[i] = s->likes.items[ s->likes.count-1 ];
+
+			// Then discard the last element
+			s->likes.count -= 1;
+
+			break;
+		}
+	}
+	if( !s->stub ) {
+		if( a->id == owner_account_id ) {
+			// TODO: undo activity
+			// activity_like( s );
+		}
+	}
+
+	status_save(s);
+}
 void status_set_bookmark( struct status* s )
 {
 	s->bookmarked = true;