#define BLYNK_TEMPLATE_ID "TMPL6Z-cRmHnz"
#define BLYNK_TEMPLATE_NAME "IOT"
#define BLYNK_AUTH_TOKEN "3XkK6xirg815jxIhNEjcooXjnEB0aV97"

#include <Arduino.h>
#include <DHT.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

#define DHT_PIN 2
#define LED_PIN 4
#define BUZZER_PIN 5
#define BUTTON_PIN 14

DHT dht(DHT_PIN, DHT22);
char auth[] = "3XkK6xirg815jxIhNEjcooXjnEB0aV97";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

bool ledState = false;
bool buzzerState = false;
bool buttonState = false;

void setup() {
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);

  pinMode(LED_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);

  dht.begin();
}

void loop() {
  Blynk.run();

  float temperature = dht.readTemperature();
  delay(1000);
  Blynk.virtualWrite(V1, temperature);
  Serial.println("nhiet do = ");;
  Serial.print(temperature);  


  if (temperature > 70) {
    ledState = !ledState;
    buzzerState = true;
    Blynk.virtualWrite(V0,"có cháy, mọi người sơ tán");
  } else if (temperature > 50) {
    ledState = true;
    buzzerState = false;
    Blynk.virtualWrite(V0,"nhiệt độ đang cao, nguy hiểm");
  } else {
    ledState = false;
    buzzerState = false;
    Blynk.virtualWrite(V0,"nhiệt độ bình thường");
  }

  digitalWrite(LED_PIN, ledState);

  if (buzzerState) {
    tone(BUZZER_PIN, 1000);
  } else {
    noTone(BUZZER_PIN);
  }

  if (digitalRead(BUTTON_PIN) == LOW) {
    ledState = !ledState;
    buzzerState = true;
  }
}