#ifndef STORAGE_H
#define STORAGE_H
#include <Arduino.h>
#include <LittleFS.h> //Built-in ESP32 library for file system management

class Storage {
public:
  /**
   * @brief Initialice LittleFS and read configuration file.
   * @return String with the JSON content or an empty string if the file does not exist or cannot be read.
   */
  static String readConfigFile() {
    if(!LittleFS.begin(true)) {
        Serial.println("[Storage] Error to initialize LittleFS");
        return "";
    }
    if (!LittleFS.exists("/config.json")) {
        Serial.println("[Storage] Configuration file does not exist");
        return "";
    }
    File file = LittleFS.open("/config.json", "r");
    if (!file) {
        Serial.println("[Storage] Error opening configuration file");
        return "";
    }
    String content = file.readString();
    file.close();
    return content;
  }
  static void saveConfigFile(const String& jsonConfig) {
    File file = LittleFS.open("/config.json", "w");
    if (!file) {
        Serial.println("[Storage] Error opening configuration file for writing");
        return;
    }
    file.print(jsonConfig);
    file.close();
    Serial.println("[Storage] Configuration file saved");
  }
};
#endif