#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
#include <NTPClient.h>

#define OLED_RESET 0  // Reset pin for the OLED (not used in all SSD1306 displays)
Adafruit_SSD1306 display(OLED_RESET);

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

const long utcOffsetInSeconds = 3600;  // Change this to your UTC offset in seconds (e.g., 3600 for UTC+1)
const unsigned long interval = 2 * 60 * 60 * 1000; // 2 hours in milliseconds

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "europe.pool.ntp.org", utcOffsetInSeconds);

void setup() {
  // Initialize OLED display
  display.begin(SSD1306_I2C_ADDRESS, 4, 5);
  display.display();
  delay(2000);  // Pause for 2 seconds

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // Set up NTP client
  timeClient.begin();
  timeClient.update();
}

void loop() {
  if (millis() - timeClient.getLastUpdate() >= interval) {
    timeClient.forceUpdate();
    display.clearDisplay();
    display.setTextSize(1);
    display.setTextColor(SSD1306_WHITE);
    display.setCursor(0, 0);
    display.println("Current Time:");
    display.setTextSize(2);
    display.setCursor(0, 16);
    display.println(timeClient.getFormattedTime());
    display.display();
  }
}