Initialisation depot

include/MqttManager.h

@@ -0,0 +1,24 @@
+#pragma once
+#include <functional>
+#include <PubSubClient.h>
+#include <WiFiClient.h>
+
+class MqttManager {
+public:
+  using MessageCallback = std::function<void(char*, uint8_t*, unsigned int)>;
+  MqttManager();
+  void begin(const char* server, uint16_t port, MessageCallback cb);
+  void loop();
+  bool publish(const char* topic, const char* payload);
+  bool subscribe(const char* topic);
+  bool connected();
+private:
+  WiFiClient espClient;
+  PubSubClient client{espClient};
+  MessageCallback messageCb;
+  const char* serverAddr = nullptr;
+  uint16_t serverPort = 0;
+  static MqttManager* instance;
+  static void staticCallback(char* topic, byte* payload, unsigned int length);
+  void connect();
+};