#define BLYNK_TEMPLATE_ID "TMPL5jAAC7V56"
#define BLYNK_TEMPLATE_NAME "Environmental Monitoring System"
#define BLYNK_AUTH_TOKEN "5DMlmnMK58SNBmXO5afi7iOIMcRCatG0"

#include <LiquidCrystal_I2C.h>
#include <DHTesp.h>
#include <ESP32Servo.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define LED_PIN 14
#define BUZZ_PIN 12
#define PIR_SENS 17
#define SERVO 32
#define BUTTON 13
//the pin does matter when using the DHT-22 sensor
const double DHT_SENS = 16;

DHTesp dhtSensor;
BlynkTimer timer;
Servo myServo;
LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Blynk.begin(auth,ssid,pass);
  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZ_PIN, OUTPUT);
  pinMode(PIR_SENS, INPUT);
  pinMode(BUTTON, INPUT);
  myServo.attach(SERVO);
  
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temperature:");
  lcd.setCursor(0,2);
  lcd.print("Humidity:");

  dhtSensor.setup(DHT_SENS, DHTesp::DHT22);
}

void loop() {
  // put your main code here, to run repeatedly:
  Blynk.run();
  int PIR_status = digitalRead(PIR_SENS);
  int BUTTON_status = digitalRead(BUTTON);
  TempAndHumidity  data = dhtSensor.getTempAndHumidity();
  int temp = data.temperature;
  int humid = data.humidity;

  Blynk.virtualWrite(V0, temp);
  Blynk.virtualWrite(V1, humid);
  Blynk.virtualWrite(V2, PIR_status);
  Blynk.virtualWrite(V3, BUTTON_status);

  if(PIR_status == HIGH){
    digitalWrite(LED_PIN, HIGH);
    digitalWrite(BUZZ_PIN, HIGH);
    Serial.println("Motion Detected!");
  }
  else{
    digitalWrite(LED_PIN, LOW);
    digitalWrite(BUZZ_PIN, LOW);
  }

  if(BUTTON_status == LOW){
    myServo.write(90);
    Serial.println("Door is locked!");
  }
  else{
    myServo.write(0);
    Serial.println("Door is unlocked!");
  }

  lcd.setCursor(15,0);
  lcd.print(temp);
  lcd.setCursor(15,2);
  lcd.print(humid);

  delay(1000);
}