#include <EEPROM.h>

const int EEPROM_ADDRESS = 0;
const int MAX_STRING_LENGTH = 50;

struct EEPROMData {
  String value;

  EEPROMData() : value("") {}
};

void setup() {
  Serial.begin(9600);

  EEPROMData data;
  EEPROM.get(EEPROM_ADDRESS, data);
  // set default values to eeprom only if first value is empty

  if (data.value.length() == 0) {
    Serial.println("EEPROM memory at the first address is empty");
    for (int i = 0; i < 11; i++) {
      EEPROMData defaultData;
      defaultData.value = String(""); // Example data to write
      int address = EEPROM_ADDRESS + i + sizeof(defaultData);
      EEPROM.put(address, defaultData);
    }
  }
}

String getConfigValue(int i) {
  String result = "";
  EEPROMData data;
  int address = EEPROM_ADDRESS + i * sizeof(data);
  Serial.println(address);
  EEPROM.get(address, data);

  if (data.value.length() > 0) {
    result  += data.value;
  }

  return result;
}

void saveValueToEEProm(int index, String value) {
  EEPROMData data;
  data.value = value;
  int address = EEPROM_ADDRESS + index * sizeof(data);
  EEPROM.put(address, data);

}

void loop() {
  
  /**
  for (int i = 0; i < 11; i++) {
      EEPROMData newData;
      int address = EEPROM_ADDRESS + i + sizeof(newData);
      EEPROM.get(address, newData);
      Serial.println(newData.value);
  }
  **/

  saveValueToEEProm(1, String("Hola 1"));
  saveValueToEEProm(2, String("Hola 2"));
  Serial.println("Val 1: ");
  Serial.print(getConfigValue(1));
  Serial.println("Val 2:");
  Serial.print(getConfigValue(2));
  Serial.println("Val 3:");
  Serial.print(getConfigValue(3).length());
  delay(500);
}