#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include "DHTesp.h"

// Define the I2C pins
#define SDA 21 // SDA_PIN = GPIO_NUM_21;
#define SCL 22 // SCL_PIN = GPIO_NUM_22;

const char* ssid = "Airtel-arvi-6035";      // Replace with your WiFi network name
const char* password = "air26289";  // Replace with your WiFi password

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

const int DHT_PIN = 15;
DHTesp dhtSensor;

LiquidCrystal_I2C lcd(0x27, 20, 4);  // 0x27 is the I2C address, adjust if necessary

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, ntpServer, gmtOffset_sec, daylightOffset_sec);

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

  // LCD initialization
  lcd.init();
  lcd.backlight();

  // Display for Time
  lcd.setCursor(0, 0);
  lcd.print("Time: 9 16");

  // Display for Date
  lcd.setCursor(0, 1);
  lcd.print("Date:31 oct 23");

  // Display for Temperature and Humidity
  lcd.setCursor(0, 2);
  lcd.print("Temp: --.-C");
  lcd.setCursor(0, 3);
  lcd.print("Humidity: ---%");
  lcd.setCursor(0, 3);
  lcd.print("by arvind patil");

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

  // NTP client setup
  timeClient.begin();
  timeClient.setTimeOffset(0);

  // DHT sensor setup
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
}

void loop() {
  // Update NTP time
  timeClient.update();

  // Display time on LCD
  lcd.setCursor(6, 0);
  lcd.print(timeClient.getFormattedTime());

  // Display date on LCD
  lcd.setCursor(6, 1);
  lcd.print("31 Oct 23");  // Replace with your date format

  // Temperature and Humidity readings
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");

  // Display temperature on LCD
  lcd.setCursor(6, 2);
  lcd.print(String(data.temperature, 2) + "C");

  // Display humidity on LCD
  lcd.setCursor(9, 3);
  lcd.print(String(data.humidity, 1) + "%");

  delay(1000);  // Update every second
}