#include <WiFi.h>
#include <ESP32Time.h>
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 rtc;
int i = 0;
ESP32Time Irtc(3600);
const char* ssid = "Wokwi-GUEST";
const char* password = "";

void setup() {
  Serial.begin(115200);

  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1) delay(10);
  }


  WiFi.begin(ssid, password);
  while(WiFi.status() != WL_CONNECTED) {
    delay (1000);
    i +=1;
    if (i > 9){
      Serial.println("Sono passati 10 secondi senza connessione WIFI - Recupero Orario da DS1307");
      //rtc.adjust(DateTime(2024, 9, 20, 13, 20, 0)); //DateTime(Irtc.getEpoch())+utcOffsetInSeconds
      SetTimeFromDS1307();
      break;
    }
  }  
  if (WiFi.status() == WL_CONNECTED) {
    Serial.println("Connessione Internet OK. Recupero Orario da server NTP ed aggiorno DS1307 e timer ESP32");
    NTPUpdate();
  }  
  
  

  
  //Irtc.setTime(30, 24, 15, 17, 1, 2021);  // 17th Jan 2021 15:24:30


}

void loop() {
  if (Serial.available()) {
   char myFirstCharacter = Serial.read();
      if (myFirstCharacter == 'U'){
        Serial.println("Update");
        NTPUpdate();
      }
  }

  Serial.print("Internal : ");
  Serial.print(Irtc.getTime()); //  (String) 15:24:38
  Serial.print(" ");
  Serial.println(Irtc.getDate());          //  (String) Sun, Jan 17 2021

 Serial.print("DS1307 : ");
  DateTime now = rtc.now(); 
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.print(now.second(), DEC);
  Serial.print(' ');
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.println();


  delay(1000);
}

void NTPUpdate() {
  configTime(0, 0, "ntp1.inrim.it");
  struct tm timeinfo;
  if (getLocalTime(&timeinfo)){
   setenv("TZ","CET-1CEST,M3.5.0/2,M10.5.0/3",1);  //  Now adjust the TZ.  Clock settings are adjusted to show the new local time
   tzset();  
   Irtc.setTimeStruct(timeinfo);
   Serial.println("Success!"); 
  }
  delay(3000);
  rtc.adjust(Irtc.getEpoch());
  //rtc.adjust(DateTime(Irtc.getYear(), Irtc.getMonth()+1, Irtc.getDay(), Irtc.getHour(), Irtc.getMinute(), Irtc.getSecond())); //DateTime(Irtc.getEpoch())+utcOffsetInSeconds
}

void SetTimeFromDS1307() {
  DateTime now = rtc.now();
  setenv("TZ","CET-1CEST,M3.5.0/2,M10.5.0/3",1);  //  Now adjust the TZ.  Clock settings are adjusted to show the new local time
  tzset();  
  Irtc.setTime(now.second(),now.minute(),now.hour(),now.day(),now.month(),now.year());  
}