#include <TM1637Display.h>
#include "RTClib.h"
#include <WiFi.h>
#include <NTPClient.h>          
#include <TimeLib.h>                 

// TM1637 display
#define CLK 5
#define DIO 18
TM1637Display display = TM1637Display(CLK, DIO);

// DS1307 RTC time 
RTC_DS1307 MyRTC;

// WiFi
const char *ssid     = "Wokwi-GUEST";
const char *password = "";
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "time.nist.gov", 28800, 60000);

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

  display.clear();
  display.setBrightness(4);

  if (!MyRTC.begin()) {
    Serial.println("Couldn't find RTC");
    while(1);
  }

  // WiFi.begin("danis", "72157200");
  WiFi.begin(ssid, password, 6);
  Serial.print("Connecting.");
  while ( WiFi.status() != WL_CONNECTED ) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("connected");

  timeClient.update();

  timeClient.begin();
  // delay(1000);

  timeClient.update();
  unsigned long unix_epoch = timeClient.getEpochTime();    // Get Unix epoch time from the NTP server
  int minute_ = minute(unix_epoch);
  int hour_   = hour(unix_epoch);
  int day_    = day(unix_epoch);
  int month_  = month(unix_epoch);
  int year_   = year(unix_epoch);

  //delay(1000); 

  //MyRTC.adjust(DateTime(2023, 8, 20, 19, 38));
  MyRTC.adjust(DateTime(year_, month_, day_, hour_, minute_));
  
}

void loop() {
  DateTime now = MyRTC.now();

  int wkt = (now.hour()*100) + now.minute(); 

//  display.showNumberDec((now.hour()*100)+now.minute()); 
  display.showNumberDecEx(wkt,0b11100000, false, 4, 0);
  // display.showNumberDec(wkt);


  delay(2000);

  display.clear();
}