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#ifndef MqttSettingsService_h
#define MqttSettingsService_h
#include <StatefulService.h>
#include <HttpEndpoint.h>
#include <FSPersistence.h>
#include <AsyncMqttClient.h>
#include <ESPUtils.h>
#define MQTT_RECONNECTION_DELAY 5000
#define MQTT_SETTINGS_FILE "/config/mqttSettings.json"
#define MQTT_SETTINGS_SERVICE_PATH "/rest/mqttSettings"
#ifndef FACTORY_MQTT_ENABLED
#define FACTORY_MQTT_ENABLED false
#endif
#ifndef FACTORY_MQTT_HOST
#define FACTORY_MQTT_HOST "test.mosquitto.org"
#endif
#ifndef FACTORY_MQTT_PORT
#define FACTORY_MQTT_PORT 1883
#endif
#ifndef FACTORY_MQTT_USERNAME
#define FACTORY_MQTT_USERNAME ""
#endif
#ifndef FACTORY_MQTT_PASSWORD
#define FACTORY_MQTT_PASSWORD ""
#endif
#ifndef FACTORY_MQTT_CLIENT_ID
#define FACTORY_MQTT_CLIENT_ID generateClientId()
#endif
#ifndef FACTORY_MQTT_KEEP_ALIVE
#define FACTORY_MQTT_KEEP_ALIVE 16
#endif
#ifndef FACTORY_MQTT_CLEAN_SESSION
#define FACTORY_MQTT_CLEAN_SESSION true
#endif
#ifndef FACTORY_MQTT_MAX_TOPIC_LENGTH
#define FACTORY_MQTT_MAX_TOPIC_LENGTH 128
#endif
static String generateClientId() { #ifdef ESP32
return ESPUtils::defaultDeviceValue("esp32-"); #elif defined(ESP8266)
return ESPUtils::defaultDeviceValue("esp8266-"); #endif
}
class MqttSettings { public: // host and port - if enabled
bool enabled; String host; uint16_t port;
// username and password
String username; String password;
// client id settings
String clientId;
// connection settings
uint16_t keepAlive; bool cleanSession; uint16_t maxTopicLength;
static void read(MqttSettings& settings, JsonObject& root) { root["enabled"] = settings.enabled; root["host"] = settings.host; root["port"] = settings.port; root["username"] = settings.username; root["password"] = settings.password; root["client_id"] = settings.clientId; root["keep_alive"] = settings.keepAlive; root["clean_session"] = settings.cleanSession; root["max_topic_length"] = settings.maxTopicLength; }
static StateUpdateResult update(JsonObject& root, MqttSettings& settings) { settings.enabled = root["enabled"] | FACTORY_MQTT_ENABLED; settings.host = root["host"] | FACTORY_MQTT_HOST; settings.port = root["port"] | FACTORY_MQTT_PORT; settings.username = root["username"] | FACTORY_MQTT_USERNAME; settings.password = root["password"] | FACTORY_MQTT_PASSWORD; settings.clientId = root["client_id"] | FACTORY_MQTT_CLIENT_ID; settings.keepAlive = root["keep_alive"] | FACTORY_MQTT_KEEP_ALIVE; settings.cleanSession = root["clean_session"] | FACTORY_MQTT_CLEAN_SESSION; settings.maxTopicLength = root["max_topic_length"] | FACTORY_MQTT_MAX_TOPIC_LENGTH; return StateUpdateResult::CHANGED; } };
class MqttSettingsService : public StatefulService<MqttSettings> { public: MqttSettingsService(AsyncWebServer* server, FS* fs, SecurityManager* securityManager); ~MqttSettingsService();
void begin(); void loop(); bool isEnabled(); bool isConnected(); const char* getClientId(); AsyncMqttClientDisconnectReason getDisconnectReason(); AsyncMqttClient* getMqttClient();
protected: void onConfigUpdated();
private: HttpEndpoint<MqttSettings> _httpEndpoint; FSPersistence<MqttSettings> _fsPersistence;
// Pointers to hold retained copies of the mqtt client connection strings.
// This is required as AsyncMqttClient holds refrences to the supplied connection strings.
char* _retainedHost; char* _retainedClientId; char* _retainedUsername; char* _retainedPassword;
// variable to help manage connection
bool _reconfigureMqtt; unsigned long _disconnectedAt;
// connection status
AsyncMqttClientDisconnectReason _disconnectReason;
// the MQTT client instance
AsyncMqttClient _mqttClient;
#ifdef ESP32
void onStationModeGotIP(WiFiEvent_t event, WiFiEventInfo_t info); void onStationModeDisconnected(WiFiEvent_t event, WiFiEventInfo_t info); #elif defined(ESP8266)
WiFiEventHandler _onStationModeDisconnectedHandler; WiFiEventHandler _onStationModeGotIPHandler; void onStationModeGotIP(const WiFiEventStationModeGotIP& event); void onStationModeDisconnected(const WiFiEventStationModeDisconnected& event); #endif
void onMqttConnect(bool sessionPresent); void onMqttDisconnect(AsyncMqttClientDisconnectReason reason); void configureMqtt(); };
#endif // end MqttSettingsService_h
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