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

const int DHT_PIN = 15;
const int BUZZER = 18;
const int LED_RED = 5;
const int BUTTON_PIN = 13; // Assuming button is connected to pin 13

DHTesp dhtSensor;
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Custom characters for background effect
byte backgroundChar[8] = { 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111, 0b11111 }; // Full block
byte emptyChar[8] = { 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b00000, 0b00000 }; // Empty block

void setup() {
  Serial.begin(115200);
  pinMode(BUZZER, OUTPUT); // Buzzer
  pinMode(LED_RED, OUTPUT); // Red LED
  pinMode(BUTTON_PIN, INPUT_PULLUP); // Button as input with internal pull-up
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  lcd.init();
  lcd.backlight();

  // Create custom characters
  lcd.createChar(0, backgroundChar); // Create background character
  lcd.createChar(1, emptyChar); // Create empty character
}

void loop() {
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
  
  // Display temperature and humidity on Serial Monitor
  Serial.println("Temp: " + String(data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(data.humidity, 1) + "%");
  Serial.println("---");

  // Clear the LCD and set background
  lcd.clear();
  
  // Set background effect
  for (int i = 0; i < 16; i++) {
    lcd.setCursor(i, 0);
    lcd.write(byte(0)); // Write the background character
  }
  
  // Display temperature on the LCD
  lcd.setCursor(0, 1);
  lcd.print("Temp: " + String(data.temperature, 2) + " C");
  delay(1000);
  
  // Clear the second line and display message based on temperature
  lcd.setCursor(0, 1);
  bool buttonPressed = digitalRead(BUTTON_PIN) == LOW; // Button pressed when LOW
  
  if (data.temperature < 20) {
    lcd.print("AMAN");
    digitalWrite(LED_RED, LOW);
    noTone(BUZZER);
  } 
  else if (data.temperature > 32 && !buttonPressed) {
    lcd.print("UDARA TDK BAIK");
    digitalWrite(LED_RED, HIGH);
    tone(BUZZER, 165); // Buzzer alert
  } 
  else if (data.temperature > 20 && data.temperature < 32) {
    lcd.print("UDARA BAGUS");
    digitalWrite(LED_RED, LOW);
    noTone(BUZZER);
  }

  // Override buzzer if the button is pressed
  if (buttonPressed) {
    noTone(BUZZER);
    digitalWrite(LED_RED, LOW); // Optional: turn off LED if button pressed
  }

  delay(2000); // Adjust as needed
}