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

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

#define NTP_SERVER     "pool.ntp.org"
#define UTC_OFFSET     7
#define UTC_OFFSET_DST 0
#define LED 2

int sensor = 4;
int val = 0;                 // variable to store the sensor status (value)
int state = LOW;             // by default, no motion detected

const float THRESHOLD = 10;
const int DHT_PIN = 15;
DHTesp dhtSensor;

void printTempAndHumidity() {
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();

  LCD.setCursor(0, 0);
  LCD.println("Temp: " + String(data.temperature, 2) + "C");

  LCD.setCursor(0, 1);
  LCD.println("Humidity: " + String(data.humidity, 1) + "%");

  if(data.temperature > THRESHOLD) {
    digitalWrite(LED, HIGH);
    delay(3000);
  } else {
    digitalWrite(LED, LOW);
    delay(100);
  }

  val = digitalRead(sensor);
  if (val == HIGH) {           // check if the sensor is HIGH
    digitalWrite(LED, HIGH);   // turn LED ON
    delay(100);                // delay 100 milliseconds 
    
    if (state == LOW) {
      Serial.println("Motion detected!"); 
      state = HIGH;       // update variable state to HIGH
    }
  } 
  else {
      digitalWrite(LED, LOW); // turn LED OFF
      delay(200);             // delay 200 milliseconds 
      
      if (state == HIGH){
        Serial.println("Motion stopped!");
        state = LOW;       // update variable state to LOW
    }
  }
}

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  pinMode(LED, OUTPUT);

  pinMode(sensor, INPUT);

  LCD.init();
  LCD.backlight();
}

void loop() {
  printTempAndHumidity();
  delay(250);
}