#include <Arduino.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#include <WiFi.h>
#include <HTTPClient.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";

#define DHTPIN 14     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22   // DHT 22 (AM2302)
DHT dht(DHTPIN, DHTTYPE);

#define I2C_ADDR 0x27 // I2C address for the LCD
#define LCD_COLS 16   // Number of columns on the LCD
#define LCD_ROWS 2    // Number of rows on the LCD

#define LEDYELLOW 12
#define LEDRED 2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLS, LCD_ROWS);

void setup() {
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  }

  pinMode(LEDYELLOW, OUTPUT);
  pinMode(LEDRED, OUTPUT);

  Serial.begin(9600);
  delay(1500);

  Wire.begin();
  lcd.init();
  lcd.backlight();
  dht.begin();
}

void loop() {
  digitalWrite(LEDYELLOW, HIGH);
  digitalWrite(LEDRED, LOW);
  delay(1000);  // Yellow LED on, Red LED off
  digitalWrite(LEDYELLOW, LOW);
  digitalWrite(LEDRED, HIGH);
  delay(1000);  // Yellow LED off, Red LED on

  // Read temperature and humidity from DHT sensor
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Print temperature and humidity to LCD
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print(" C");

  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");
  lcd.print(humidity);
  lcd.print("%");

  delay(1000);
}