#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <NTPClient.h>
#include <WiFiUdp.h> //handles sending and receiving of UDP packages
#include <ESP8266WiFi.h> // provides ESP8266 specific Wi-Fi routines we are calling to connect to network

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define OLED_MOSI   13
#define OLED_CLK   14
#define OLED_DC    4
#define OLED_CS    15
#define OLED_RESET 0
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT,OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);

const char *ssid     = "*********";
const char *password = "*********";

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", 19800,60000);
String arr_days[]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
String date_time;
// You can specify the time server pool and the offset (in seconds, can be
// changed later with setTimeOffset() ). Additionaly you can specify the
// update interval (in milliseconds, can be changed using setUpdateInterval() ).
  

void setup(){
Serial.begin(115200);
WiFi.begin(ssid, password);

  while ( WiFi.status() != WL_CONNECTED ) {
    delay ( 500 );
    Serial.print ( "." );
  }
  
if(!oled.begin(SSD1306_SWITCHCAPVCC))
{
  Serial.println(F("SSD1306 allocation failed"));
  for(;;);
}

  oled.clearDisplay();
  oled.setTextSize(1); // Draw 2X-scale text
  oled.setTextColor(WHITE);
  oled.setCursor(5, 2);
  oled.println("AYUBOWAN.!");
  oled.println("Prabuddha");
  oled.println("  Srimal");
  oled.display();
  delay(3000);
  timeClient.begin();
  
}

void loop(){
  timeClient.update();
  
  oled.clearDisplay();
  
  Serial.println(timeClient.getFormattedTime());
  
  oled.setTextSize(3); // Draw 2X-scale text
  oled.setTextColor(WHITE);
  oled.setCursor(0, 2);
  int hh = timeClient.getHours();
  int mm = timeClient.getMinutes();
  int ss = timeClient.getSeconds();
  
  if(hh>12)
  {
    hh=hh-12;
    oled.print(hh);
    oled.print(":");
    oled.print(mm);
    oled.print(":");
    oled.println("pm");
  }
  else
  {
    oled.print(hh);
    oled.print(":");
    oled.print(mm);
    oled.print(":");
    oled.println("am");   
  }

  int day = timeClient.getDay();
  oled.println(""+arr_days[day]+"");

  oled.display();      // Show initial text
}

//@ApePanthiya ICT