add mqtt maintenance section

MqttTopics.h

@@ -26,3 +26,7 @@
 #define mqtt_topic_config_sound_level "/configuration/soundLevel"
 
 #define mqtt_topic_presence "/presence/devices"
+
+#define mqtt_topic_reset "/maintenance/reset"
+#define mqtt_topic_uptime "/maintenance/uptime"
+#define mqtt_topic_freeheap "/maintenance/freeHeap"

Network.cpp

@@ -180,6 +180,14 @@ bool Network::reconnect()
             {
                 _device->mqttClient()->subscribe(topic.c_str());
             }
+            if(_firstConnect)
+            {
+                _firstConnect = false;
+                for(const auto& it : _initTopics)
+                {
+                    _device->mqttClient()->publish(it.first.c_str(), it.second.c_str(), true);
+                }
+            }
         }
         else
         {
@@ -201,6 +209,15 @@ void Network::subscribe(const char* prefix, const char *path)
     _subscribedTopics.push_back(prefixedPath);
 }
 
+void Network::initTopic(const char *prefix, const char *path, const char *value)
+{
+    char prefixedPath[500];
+    buildMqttPath(prefix, path, prefixedPath);
+    String pathStr = prefixedPath;
+    String valueStr = value;
+    _initTopics[pathStr] = valueStr;
+}
+
 void Network::buildMqttPath(const char* prefix, const char* path, char* outPath)
 {
     int offset = 0;
@@ -296,6 +313,15 @@ void Network::publishUInt(const char* prefix, const char *topic, const unsigned
     _device->mqttClient()->publish(path, str, true);
 }
 
+void Network::publishULong(const char* prefix, const char *topic, const unsigned long value)
+{
+    char str[30];
+    utoa(value, str, 10);
+    char path[200] = {0};
+    buildMqttPath(prefix, topic, path);
+    _device->mqttClient()->publish(path, str, true);
+}
+
 void Network::publishBool(const char* prefix, const char *topic, const bool value)
 {
     char str[2] = {0};

Network.h

@@ -2,6 +2,7 @@
 
 #include <Preferences.h>
 #include <vector>
+#include <map>
 #include "networkDevices/NetworkDevice.h"
 #include "MqttReceiver.h"
 
@@ -24,9 +25,11 @@ public:
     void disableAutoRestarts(); // disable on OTA start
 
     void subscribe(const char* prefix, const char* path);
+    void initTopic(const char* prefix, const char* path, const char* value);
     void publishFloat(const char* prefix, const char* topic, const float value, const uint8_t precision = 2);
     void publishInt(const char* prefix, const char* topic, const int value);
     void publishUInt(const char* prefix, const char* topic, const unsigned int value);
+    void publishULong(const char* prefix, const char* topic, const unsigned long value);
     void publishBool(const char* prefix, const char* topic, const bool value);
     bool publishString(const char* prefix, const char* topic, const char* value);
 
@@ -57,11 +60,13 @@ private:
     char _mqttUser[31] = {0};
     char _mqttPass[31] = {0};
     char _mqttPresencePrefix[181] = {0};
-    std::vector<String> _subscribedTopics;
     int _networkTimeout = 0;
     std::vector<MqttReceiver*> _mqttReceivers;
     char* _presenceCsv = nullptr;
     bool _restartOnDisconnect = false;
+    bool _firstConnect = true;
+    std::vector<String> _subscribedTopics;
+    std::map<String, String> _initTopics;
 
     unsigned long _lastConnectedTs = 0;
 };

NetworkLock.cpp

@@ -48,6 +48,21 @@ void NetworkLock::initialize()
     {
         _network->subscribe(_mqttPath, topic);
     }
+
+    _network->subscribe(_mqttPath, mqtt_topic_reset);
+    _network->initTopic(_mqttPath, mqtt_topic_reset, "0");
+}
+
+void NetworkLock::update()
+{
+    unsigned long ts = millis();
+
+    if(_lastMaintenanceTs == 0 || (ts - _lastMaintenanceTs) > 30000)
+    {
+        _lastMaintenanceTs = ts;
+        publishULong(mqtt_topic_uptime, ts / 1000 / 60);
+        publishUInt(mqtt_topic_freeheap, esp_get_free_heap_size());
+    }
 }
 
 void NetworkLock::onMqttDataReceived(char *&topic, byte *&payload, unsigned int &length)
@@ -60,6 +75,13 @@ void NetworkLock::onMqttDataReceived(char *&topic, byte *&payload, unsigned int
         value[i] = payload[i];
     }
 
+    if(comparePrefixedPath(topic, mqtt_topic_reset) && strcmp(value, "1") == 0)
+    {
+        Serial.println(F("Restart requested via MQTT."));
+        delay(200);
+        ESP.restart();
+    }
+
     if(comparePrefixedPath(topic, mqtt_topic_lock_action))
     {
         if(strcmp(value, "") == 0 || strcmp(value, "ack") == 0 || strcmp(value, "unknown_action") == 0) return;
@@ -241,3 +263,9 @@ bool NetworkLock::publishString(const char *topic, const char *value)
 {
     return _network->publishString(_mqttPath, topic, value);
 }
+
+void NetworkLock::publishULong(const char *topic, const unsigned long value)
+{
+    return _network->publishULong(_mqttPath, topic, value);
+}
+

NetworkLock.h

@@ -17,6 +17,7 @@ public:
     virtual ~NetworkLock();
 
     void initialize();
+    void update();
 
     void publishKeyTurnerState(const NukiLock::KeyTurnerState& keyTurnerState, const NukiLock::KeyTurnerState& lastKeyTurnerState);
     void publishAuthorizationInfo(const uint32_t authId, const char* authName);
@@ -36,6 +37,7 @@ private:
     void publishFloat(const char* topic, const float value, const uint8_t precision = 2);
     void publishInt(const char* topic, const int value);
     void publishUInt(const char* topic, const unsigned int value);
+    void publishULong(const char* topic, const unsigned long value);
     void publishBool(const char* topic, const bool value);
     bool publishString(const char* topic, const char* value);
     bool comparePrefixedPath(const char* fullPath, const char* subPath);
@@ -49,6 +51,7 @@ private:
     char _mqttPath[181] = {0};
 
     bool _firstTunerStatePublish = true;
+    unsigned long _lastMaintenanceTs = 0;
 
     bool (*_lockActionReceivedCallback)(const char* value) = nullptr;
     void (*_configUpdateReceivedCallback)(const char* path, const char* value) = nullptr;

main.cpp

@@ -36,16 +36,12 @@ void networkTask(void *pvParameters)
         {
             // Network Device and MQTT is connected. Process all updates.
             case 0:
-                network->update();
-                webCfgServer->update();
-                break;
             case 1:
-                // Network Device is connected, but MQTT isn't. Call network->update() to allow MQTT reconnect and
-                // keep Webserver alive to allow user to reconfigure network settings
+                networkLock->update();
                 network->update();
                 webCfgServer->update();
                 break;
-                // Neither Network Devicce or MQTT is connected
+                // Neither Network Devicc or MQTT is connected. Call network to allow for a reconnect.
             default:
                 network->update();
                 break;