Check GitHub for updates

Config.h

@@ -1,6 +1,8 @@
 #pragma once
 
 #define NUKI_HUB_VERSION "8.32-pre-3"
+#define GITHUB_LATEST_RELEASE_URL "https://github.com/technyon/nuki_hub/releases/latest"
+#define GITHUB_RELEASE_TAG_URL "https://github.com/technyon/nuki_hub/releases/tag/"
 
 #define MQTT_QOS_LEVEL 1
 #define MQTT_CLEAN_SESSIONS false

MqttTopics.h

@@ -41,6 +41,7 @@
 #define mqtt_topic_info_hardware_version "/info/hardwareVersion"
 #define mqtt_topic_info_firmware_version "/info/firmwareVersion"
 #define mqtt_topic_info_nuki_hub_version "/info/nukiHubVersion"
+#define mqtt_topic_info_nuki_hub_latest "/info/nukiHubLatest"
 
 #define mqtt_topic_keypad "/keypad"
 #define mqtt_topic_keypad_command_action "/keypad/command/action"

Network.cpp

@@ -357,7 +357,26 @@ bool Network::update()
         }
         _lastMaintenanceTs = ts;
     }
+    
+    if(_lastUpdateCheckTs == 0 || (ts - _lastUpdateCheckTs) > 86400000)
+    {
+        _lastUpdateCheckTs = ts;
+        
+        https.collectHeaders(headerKeys, 1);
+        https.setFollowRedirects(HTTPC_DISABLE_FOLLOW_REDIRECTS);
+        https.begin(GITHUB_LATEST_RELEASE_URL);
 
+        int httpResponseCode = https.GET();
+
+        if (httpResponseCode==302) {
+            _latestVersion = https.header("location");
+            _latestVersion.replace(GITHUB_RELEASE_TAG_URL, "");
+            publishString(_maintenancePathPrefix, mqtt_topic_info_nuki_hub_latest, _latestVersion);
+        }
+
+        https.end();
+    }
+    
     for(const auto& gpioTs : _gpioTs)
     {
         uint8_t pin = gpioTs.first;

Network.h

@@ -8,6 +8,7 @@
 #include "networkDevices/IPConfiguration.h"
 #include "MqttTopics.h"
 #include "Gpio.h"
+#include <HTTPClient.h>
 
 enum class NetworkDeviceType
 {
@@ -111,6 +112,10 @@ private:
     char _mqttConnectionStateTopic[211] = {0};
     String _lockPath;
 
+    const char* headerKeys[] = {"location"};
+    String _latestVersion;
+    HTTPClient https;
+
     Preferences* _preferences;
     Gpio* _gpio;
     IPConfiguration* _ipConfiguration = nullptr;
@@ -137,6 +142,7 @@ private:
 
     unsigned long _lastConnectedTs = 0;
     unsigned long _lastMaintenanceTs = 0;
+    unsigned long _lastUpdateCheckTs = 0;
     unsigned long _lastRssiTs = 0;
     bool _mqttEnabled = true;
     static unsigned long _ignoreSubscriptionsTs;