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

const int DHT_PIN = 15;
DHTesp dhtSensor;
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

const int LED_PIN = 2; // Chọn chân GPIO bạn muốn sử dụng cho đèn LED
const float TEMP_THRESHOLD_HIGH = 28.0; // Nhiệt độ ngưỡng cao (độ C)
const float TEMP_THRESHOLD_LOW = 22.0;  // Nhiệt độ ngưỡng thấp (độ C)
const float HUMIDITY_THRESHOLD_HIGH = 60.0; // Độ ẩm ngưỡng cao (%)
const float HUMIDITY_THRESHOLD_LOW = 40.0;  // Độ ẩm ngưỡng thấp (%)

#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     0
#define UTC_OFFSET_DST 0

void spinner() {
  static int8_t counter = 0;
  const char* glyphs = "\xa1\xa5\xdb";
  LCD.setCursor(15, 1);
  LCD.print(glyphs[counter++]);
  if (counter == strlen(glyphs)) {
    counter = 0;
  }
}

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

  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
  pinMode(LED_PIN, OUTPUT); 
}

void loop() {
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  float temperature = data.temperature;
  float humidity = data.humidity;

 
  if (temperature > TEMP_THRESHOLD_HIGH || humidity > HUMIDITY_THRESHOLD_HIGH) {
    digitalWrite(LED_PIN, HIGH); 
  } else if (temperature < TEMP_THRESHOLD_LOW || humidity < HUMIDITY_THRESHOLD_LOW) {
    digitalWrite(LED_PIN, LOW);
  }
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Temp: " + String(temperature, 2) + "°C");
  LCD.setCursor(0, 1);
  LCD.println("Humidity: " + String(humidity, 1) + "%");
  Serial.println("Temp: " + String(temperature, 2) + "°C");
  Serial.println("Humidity: " + String(humidity, 1) + "%");
  Serial.println("---");
  delay(1000); 
}