WiFiSwitch/src/WiFiSwitch/config.ino

//const char* deviceName = DEVICE_NAME;
//const char* mqtt_server = MQTT_SERVER;
//const int mqtt_port = MQTT_PORT;
//const char* mqtt_topic_in = MQTT_TOPIC_IN;
//const char* mqtt_topic_out = MQTT_TOPIC_OUT;
//const char* mqtt_topic_out_hold[3] = { BUTTON1_HOLD_TOPIC_OUT, BUTTON2_HOLD_TOPIC_OUT, BUTTON3_HOLD_TOPIC_OUT };
//const char* mqtt_payload_out_hold[3] = { BUTTON1_HOLD_PAYLOAD_OUT, BUTTON2_HOLD_PAYLOAD_OUT, BUTTON3_HOLD_PAYLOAD_OUT };
//const int domoticzIdx[3] = {DOMOTICZ_IDX_1, DOMOTICZ_IDX_2, DOMOTICZ_IDX_3}; // initially set to 0, must be defined in config


bool loadConfig() {
  File configFile = SPIFFS.open("/config.json", "r");
  if (!configFile) {
    Serial.println("Failed to open config file");
    return false;
  }

  size_t size = configFile.size();
  if (size > 1024) {
    Serial.println("Config file size is too large");
    return false;
  }

  // Allocate a buffer to store contents of the file.
  std::unique_ptr<char[]> buf(new char[size]);

  // We don't use String here because ArduinoJson library requires the input
  // buffer to be mutable. If you don't use ArduinoJson, you may as well
  // use configFile.readString instead.
  configFile.readBytes(buf.get(), size);

  StaticJsonBuffer<200> jsonBuffer;
  JsonObject& json = jsonBuffer.parseObject(buf.get());

  if (!json.success()) {
    Serial.println("Failed to parse config file");
    return false;
  }

  deviceName = json["deviceName"];
  mqtt_server = json["mqtt_server"];
  mqtt_port = atoi(json["mqtt_port"]);
  mqtt_topic_in = json["mqtt_topic_in"];
  mqtt_topic_out = json["mqtt_topic_out"];
  mqtt_topic_out_hold[0] = json["mqtt_topic_out_hold_1"];
  mqtt_topic_out_hold[1] = json["mqtt_topic_out_hold_2"];
  mqtt_topic_out_hold[2] = json["mqtt_topic_out_hold_3"];
  mqtt_payload_out_hold[0] = json["mqtt_payload_out_hold_1"];
  mqtt_payload_out_hold[1] = json["mqtt_payload_out_hold_2"];
  mqtt_payload_out_hold[2] = json["mqtt_payload_out_hold_3"];
  domoticzIdx[0] = atoi(json["domoticzIdx_1"]);
  domoticzIdx[1] = atoi(json["domoticzIdx_2"]);
  domoticzIdx[2] = atoi(json["domoticzIdx_3"]);

  Serial.println("Loaded config values:");
  Serial.print("mqtt_server: ");
  Serial.println(mqtt_server);
  Serial.print("mqtt_port: ");
  Serial.println(mqtt_port);
  Serial.print("mqtt_topic_in: ");
  Serial.println(mqtt_topic_in);
  Serial.print("mqtt_topic_out: ");
  Serial.println(mqtt_topic_out);
  Serial.print("mqtt_topic_out_hold_1: ");
  Serial.println(mqtt_topic_out_hold[0]);
  Serial.print("mqtt_topic_out_hold_2: ");
  Serial.println(mqtt_topic_out_hold[1]);
  Serial.print("mqtt_topic_out_hold_3: ");
  Serial.println(mqtt_topic_out_hold[2]);
  Serial.print("mqtt_payload_out_hold_1: ");
  Serial.println(mqtt_payload_out_hold[0]);
  Serial.print("mqtt_payload_out_hold_2: ");
  Serial.println(mqtt_payload_out_hold[1]);
  Serial.print("mqtt_payload_out_hold_3: ");
  Serial.println(mqtt_payload_out_hold[2]);
  Serial.print("domoticzIdx_1: ");
  Serial.println(domoticzIdx[0]);
  Serial.print("domoticzIdx_2: ");
  Serial.println(domoticzIdx[1]);
  Serial.print("domoticzIdx_3: ");
  Serial.println(domoticzIdx[2]);
//  Serial.print(": ");
//  Serial.println();
//  Serial.print(": ");
//  Serial.println();
//  Serial.print(": ");
//  Serial.println();
  return true;
}



bool saveConfig() {
  StaticJsonBuffer<200> jsonBuffer;
  JsonObject& json = jsonBuffer.createObject();
  
  json["deviceName"] = deviceName;
  json["mqtt_server"] = mqtt_server;
  json["mqtt_port"] = mqtt_port;
  json["mqtt_topic_in"] = mqtt_topic_in;
  json["mqtt_topic_out"] = mqtt_topic_out;
  json["mqtt_topic_out_hold_1"] = mqtt_topic_out_hold[0];
  json["mqtt_topic_out_hold_2"] = mqtt_topic_out_hold[1];
  json["mqtt_topic_out_hold_3"] = mqtt_topic_out_hold[2];
  json["mqtt_payload_out_hold_1"] = mqtt_payload_out_hold[0];
  json["mqtt_payload_out_hold_2"] = mqtt_payload_out_hold[1];
  json["mqtt_payload_out_hold_3"] = mqtt_payload_out_hold[2];
  json["domoticzIdx_1"] = domoticzIdx[0];
  json["domoticzIdx_2"] = domoticzIdx[1];
  json["domoticzIdx_3"] = domoticzIdx[2]; 
  

  File configFile = SPIFFS.open("/config.json", "w");
  if (!configFile) {
    Serial.println("Failed to open config file for writing");
    return false;
  }

  json.printTo(configFile);
  return true;
}