Add Pi-hole blocked percentage and date widgets

apis/pihole/pihole.go

@@ -41,6 +41,9 @@ func (ph *PiHConnector) post(endpoint string, body io.Reader) []byte {
 }
 
 func (ph *PiHConnector) do(method string, endpoint string, body io.Reader) []byte {
+	if ph.Host == "" {
+		return make([]byte, 0)
+	}
 	var requestString = "http://" + ph.Host + "/api/" + endpoint
 
 	client := &http.Client{}
@@ -67,7 +70,12 @@ func (ph *PiHConnector) do(method string, endpoint string, body io.Reader) []byt
 	return respBody
 }
 
+var connector *PiHConnector
+
 func Connect() PiHConnector {
+	if connector != nil {
+		return *connector
+	}
 	cfg := &configFile{}
 	config.LoadConfig(cfg)
 	client := &http.Client{}
@@ -93,8 +101,9 @@ func Connect() PiHConnector {
 	if err != nil {
 		log.Fatal(err)
 	}
-	return PiHConnector{
+	connector = &PiHConnector{
 		Host:    cfg.Pihole.Host,
 		Session: s.Session,
 	}
+	return *connector
 }