wip with light and mqtt working

lib/communication/mqtt.cpp

@@ -0,0 +1,91 @@
+#include <PubSubClient.h>
+#include <WiFiClient.h>
+#include "mqtt.h"
+
+constexpr uint16_t BUFFER_SIZE = 2048;
+
+static WiFiClient wifiClient = WiFiClient();
+static PubSubClient mqttClient = PubSubClient(wifiClient);
+std::string Mqtt::brokerIp;
+uint16_t Mqtt::brokerPort;
+std::string Mqtt::clientId;
+std::string Mqtt::username;
+std::string Mqtt::password;
+std::map<std::string, MqttCallback> Mqtt::callbacks;
+bool Mqtt::initialized = false;
+bool Mqtt::isConnected = false;
+
+void Mqtt::mqttCb(char* topic, uint8_t* payload, unsigned int length) {
+    std::string topicStr(topic);
+    if (callbacks.find(topicStr) != callbacks.end()) {
+        callbacks[topicStr](payload, length);
+    }
+}
+
+void Mqtt::subscribe(const std::string& topic, MqttCallback callback) {
+    if (mqttClient.connected()) {
+        if (mqttClient.subscribe(topic.c_str())) {
+            callbacks[topic] = callback;
+            Serial.printf("Subscribed to topic: %s\n", topic.c_str());
+        } else {
+            Serial.printf("Failed to subscribe to topic: %s\n", topic.c_str());
+        }
+    } else {
+        Serial.println("MQTT client is not connected. Cannot subscribe.");
+    }
+}
+
+void Mqtt::publish(const std::string& topic, const std::string& payload, bool retain) {
+    if (mqttClient.connected()) {
+        if (mqttClient.publish(topic.c_str(), payload.c_str(), retain)) {
+        } else {
+            Serial.printf("Failed to publish to topic: %s\n", topic.c_str(), payload.c_str());
+        }
+    } else {
+        Serial.println("MQTT client is not connected. Cannot publish.");
+    }
+}
+
+void Mqtt::poll() {
+    if (mqttClient.connected()) {
+        mqttClient.loop(); // Process incoming messages
+    } else {
+        Serial.println("MQTT client is not connected. Polling skipped.");
+    }
+}
+
+void Mqtt::checkConnection() {
+    if (!mqttClient.connected()) {
+        Serial.println("MQTT client is not connected. Attempting to reconnect...");
+        if (mqttClient.connect(Mqtt::clientId.c_str(), Mqtt::username.c_str(), Mqtt::password.c_str())) {
+            Serial.println("Reconnected to MQTT broker successfully.");
+            for (const auto& callback : Mqtt::callbacks) {
+                mqttClient.subscribe(callback.first.c_str());
+            }
+            Mqtt::isConnected = true;
+        } else {
+            Serial.printf("Failed to reconnect to MQTT broker, rc=%d\n", mqttClient.state());
+            Mqtt::isConnected = false;
+        }
+    }
+}
+
+void Mqtt::connect(std::string brokerIp, uint16_t brokerPort, std::string clientId, std::string username, std::string password) {
+    Mqtt::brokerIp = brokerIp;
+    Mqtt::brokerPort = brokerPort;
+    Mqtt::clientId = clientId;
+    Mqtt::username = username;
+    Mqtt::password = password;
+    mqttClient.setServer(Mqtt::brokerIp.c_str(), Mqtt::brokerPort);
+    mqttClient.setKeepAlive(60);
+    mqttClient.setCallback(mqttCb);
+    mqttClient.setBufferSize(BUFFER_SIZE);
+
+    if (mqttClient.connect(Mqtt::clientId.c_str(), Mqtt::username.c_str(), Mqtt::password.c_str())) {
+        Serial.println("Connected to MQTT broker");
+        Mqtt::initialized = true;
+        Mqtt::isConnected = true;
+    } else {
+        Serial.printf("Failed to connect to MQTT broker, rc=%d\n", mqttClient.state());
+    }
+}

lib/communication/mqtt.h

@@ -0,0 +1,26 @@
+#pragma once
+#include <string>
+#include <functional>
+#include <map>
+
+typedef std::function<void(uint8_t*, int)> MqttCallback;
+
+class Mqtt {
+public:
+    static void connect(std::string brokerIp, uint16_t brokerPort, std::string clientId, std::string username="mqtt", std::string password="mqtt");
+    static void poll();
+    static void checkConnection();
+    static void publish(const std::string& topic, const std::string& payload, bool retain = false);
+    static void subscribe(const std::string& topic, MqttCallback callback);
+    static void mqttCb(char* topic, uint8_t* payload, unsigned int length);
+
+private:
+    static std::string brokerIp;
+    static uint16_t brokerPort;
+    static std::string clientId;
+    static std::string username;
+    static std::string password;
+    static bool initialized;
+    static bool isConnected;
+    static std::map<std::string, MqttCallback> callbacks;
+};