#include <Wire.h>                 //ไลบารี่ของสายจอ I2C
#include <WiFi.h>
#include "time.h"
#include <Adafruit_GFX.h>         // ไลบารี่จอพวก ตัวอักษรกราฟฟิก
#include <Adafruit_SSD1306.h>     //ไลบารี่ชนิดจอ SSD1306
const char* ssid     = "Wokwi-GUEST";
const char* password = "";

const char* ntpServer = "1.th.pool.ntp.org";
const long  gmtOffset_sec = 0;
const int   daylightOffset_sec = 3600;


#define SCREEN_WIDTH 128    //ขนาดจอ 128 พิกเซล
#define SCREEN_HIGHT 64     //ขนาดจอ 64 พิกเซล
#define OLED_RESET -1    
Adafruit_SSD1306 display(OLED_RESET);   
int s = 0 ;
int m = 0;
void setup() { 
  Serial.begin(9600);

  // Connect to Wi-Fi
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected.");
  
  // Init and get the time
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  printLocalTime();

  //disconnect WiFi as it's no longer needed
  WiFi.disconnect(true);
  WiFi.mode(WIFI_OFF);  
  display.begin();  
  display.display(); 
  delay(500);   
  display.clearDisplay(); 
  display.setTextColor(WHITE);
  display.setTextSize(2);
}

void loop() {  
  

   delay(1000);
  printLocalTime(); 
}
void printLocalTime(){
  struct tm timeinfo;
  if(!getLocalTime(&timeinfo)){
    Serial.println("Failed to obtain time");
    return;
  }
  Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
  Serial.print("Day of week: ");
  Serial.println(&timeinfo, "%A");
  Serial.print("Month: ");
  Serial.println(&timeinfo, "%B");
  Serial.print("Day of Month: ");
  Serial.println(&timeinfo, "%d");
  Serial.print("Year: ");
  Serial.println(&timeinfo, "%Y");
  Serial.print("Hour: ");
  Serial.println(&timeinfo, "%H");
  Serial.print("Hour (12 hour format): ");
  Serial.println(&timeinfo, "%I");
  Serial.print("Minute: ");
  Serial.println(&timeinfo, "%M");
  Serial.print("Second: ");
  Serial.println(&timeinfo, "%S");

  Serial.println("Time variables");
  char timeHour[3];
  strftime(timeHour,3, "%H", &timeinfo);
  Serial.println(timeHour);
  char timeWeekDay[10];
  strftime(timeWeekDay,10, "%A", &timeinfo);
  Serial.println(timeWeekDay);
  Serial.println();

  display.clearDisplay();    
  display.setCursor(0,0);   
  display.display();   
}