initial commit

internal/MqttService/Helpers.go

@@ -0,0 +1,17 @@
+package MqttService
+
+import (
+	"errors"
+	"strings"
+)
+
+func PinNameFromTopic(topic string) (string,error) {
+	topicComponents := strings.Split(topic, "/")
+	if len(topicComponents) >= 2 {
+		gpioCh := topicComponents[len(topicComponents)-2]
+		return gpioCh, nil
+
+	} else {
+		return "", errors.New("invalid topic")
+	}
+}