#ifndef RTC_TASK_H
#define RTC_TASK_H

#include <Arduino.h>
#include <SoftWire.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
#include <freertos/semphr.h>
#include "config.h"

// RTC status
struct RTCStatus {
  bool available;       // DS3231 detected on I2C
  bool timeSynced;      // RTC has been set with valid time
  uint32_t syncCount;   // Number of RTC → System syncs
  float temperature;    // DS3231 internal temperature
};

extern RTCStatus rtcStatus;
extern SemaphoreHandle_t rtcMutex;

// Initialize DS3231 and read time
bool rtcInit();

// Read time from DS3231 → returns epoch (0 = fail)
time_t rtcReadTime();

// Write time to DS3231 from epoch
bool rtcWriteTime(time_t epoch);

// Sync: RTC → ESP32 system clock
bool rtcSyncToSystem();

// Sync: ESP32 system clock → RTC
bool rtcSyncFromSystem();

// Read DS3231 temperature (°C, ±0.25 resolution)
float rtcReadTemperature();

// RTC periodic sync task
void rtcSyncTask(void *param);

// Start RTC task
void rtcTaskInit();

#endif // RTC_TASK_H