#include "DHTesp.h"

#define LED_PIN 2
#define SW_PIN 4
#define LDR_PIN 34
#define DHT_PIN 14

DHTesp dhtSensor;

int pressCount = 1;
bool lastState = HIGH;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT);
  pinMode(SW_PIN, INPUT_PULLUP);

  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  Serial.println("System Ready...");
}

void loop() {
  bool currentState = digitalRead(SW_PIN);

  // LED ติดค้างเมื่อกดปุ่ม
  if (currentState == LOW) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }

  // ตรวจจับการกด (จากปล่อย → กด)
  if (lastState == HIGH && currentState == LOW) {

    if (pressCount == 1) {
      int LDRvalue = analogRead(LDR_PIN);
      Serial.println("Light Value in the Room = " + String(LDRvalue) + " lux");
    }

    else if (pressCount == 2) {
      TempAndHumidity data = dhtSensor.getTempAndHumidity();
      Serial.println("Humidity Value in the Room = " + String(data.humidity, 1) + " %H");
    }

    else if (pressCount == 3) {
      TempAndHumidity data = dhtSensor.getTempAndHumidity();
      Serial.println("Temperature Value in the Room = " + String(data.temperature, 1) + " °C");
    }

    else if (pressCount == 4) {
      TempAndHumidity data = dhtSensor.getTempAndHumidity();
      float tempF = data.temperature * 1.8 + 32;
      Serial.println("Temperature Value in the Room = " + String(tempF, 1) + " °F");
    }

    pressCount++;

    if (pressCount > 4) {
      pressCount = 1;  // วนกลับครั้งที่ 1 ใหม่
    }

    delay(250); // ลดเด้งปุ่ม
  }

  lastState = currentState;
}