#include <DHT.h>

#define led 2
#define dhtp 15
#define btn 4
#define DHT_TYPE DHT22

DHT dht(dhtp, DHT_TYPE);
bool ledState = false;

/*
bool lbuttonS = LOW;
unsigned long ldTime = 0;
const unsigned long debounceD = 50;
*/

void setup() {
    pinMode(led, OUTPUT);
    pinMode(btn, INPUT_PULLDOWN);
    Serial.begin(115200);
    dht.begin();
}

void loop() {
    static unsigned long sensorRead = 0;
    
    // for button
    /*
    bool currentButtonState = digitalRead(btn);
    if (currentButtonState != lbuttonS) {
        ldTime = millis();
    }
    if ((millis() - ldTime) > debounceD) {
        if (currentButtonState == HIGH && lbuttonS == LOW) {
            ledState = !ledState;
            digitalWrite(led, ledState);
            Serial.println(ledState ? "LED ON" : "LED OFF");
        }
    }
    lbuttonS = currentButtonState;
    */

    if (millis() - sensorRead >= 5000) {
        sensorRead = millis();
        float temperature = dht.readTemperature();
        float humidity = dht.readHumidity();
        
        if (isnan(temperature) || isnan(humidity)) {
            Serial.println("Failed");
            return;
        }
        
        Serial.print("Temperature: ");
        Serial.print(temperature);
        Serial.print(" °C, Humidity: ");
        Serial.print(humidity);
        Serial.println(" %");
        
        if (temperature > 25) {
            digitalWrite(led, HIGH);
        } else {
            digitalWrite(led, LOW);
        }
    }
}