From dd12251e43174281c737ca0868d5e6fcb8711558 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Xose=20P=C3=A9rez?= <xose.perez@gmail.com>
Date: Wed, 5 Sep 2018 13:18:22 +0200
Subject: [PATCH] Do not quote numbers in MQTT JSON payloads

---
 code/espurna/mqtt.ino  | 11 ++++++++++-
 code/espurna/utils.ino |  1 +
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/code/espurna/mqtt.ino b/code/espurna/mqtt.ino
index 79f4bff7..017240c2 100644
--- a/code/espurna/mqtt.ino
+++ b/code/espurna/mqtt.ino
@@ -574,7 +574,16 @@ unsigned char _mqttBuildTree(JsonObject& root, char parent) {
             JsonObject& elements = root.createNestedObject(element.topic);
             unsigned char num = _mqttBuildTree(elements, i);
             if (0 == num) {
-                root.set(element.topic, element.message);
+                if (isNumber(element.message)) {
+                    double value = atof(element.message);
+                    if (value == int(value)) {
+                        root.set(element.topic, int(value));
+                    } else {
+                        root.set(element.topic, value);
+                    }
+                } else {
+                    root.set(element.topic, element.message);
+                }
             }
         }
     }
diff --git a/code/espurna/utils.ino b/code/espurna/utils.ino
index ff57da9c..1203788d 100644
--- a/code/espurna/utils.ino
+++ b/code/espurna/utils.ino
@@ -451,6 +451,7 @@ int __get_adc_mode() {
 
 bool isNumber(const char * s) {
     unsigned char len = strlen(s);
+    if (0 == len) return false;
     bool decimal = false;
     for (unsigned char i=0; i<len; i++) {
         if (s[i] == '-') {