#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

int buttonState = LOW;     
int lastButtonState = LOW; 
bool systemState = false;
const int button = 19;
const int DHTPin = 4;
const int led1 = 5;
const int led2 = 18;
float temperature;
float humidity;

DHT dht(DHTPin, DHT22);
LiquidCrystal_I2C led(0x27, 16, 2);
// © Copyright by Ararya Arka XII5
String staticMessage = "ATS ICT XII";
const int delayTime = 500;
const int scrollingTime = 100;
const int bgColor = SSD1306_WHITE;
const int offColor = SSD1306_BLACK;

void setup() {
  Serial.begin(115200);
  pinMode(button, INPUT_PULLUP);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  oled.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  led.init();
  led.backlight();
  dht.begin();
  // © Copyright by Ararya Arka XII5
  led.setCursor(0, 0);
  led.print(staticMessage);
  led.setCursor(0, 1);
  led.print("Initializing...");
  delay(2000);
}

void displayData(float temp, float hum, bool useOLED) {
  if (useOLED) {
    oled.clearDisplay();
    oled.setTextSize(2);
    oled.setTextColor(SSD1306_BLACK);
    oled.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, bgColor);
    oled.setCursor(0, 0);
    oled.print("Temp:"+String(temp, 1) +"C");
  // © Copyright by Ararya Arka XII5
    oled.setCursor(0, 30);
    oled.print("Hum:" + String(hum, 1) +"%");
  
    oled.display();
  } else {
    led.clear();
    led.setCursor(0, 0);
    (temp > 15 ) ? led.print("High Temperature") : led.print("Low Temperature");
    led.setCursor(0, 1);
    (temp > 15 ) ? led.print("Panas Bet Woe!") : led.print("Santaii ^_^");
    delay(2000);
    // © Copyright by Ararya Arka XII5
    led.clear();
    led.setCursor(0, 1);
    led.print("Temp: ");
    led.print(temp, 1);
    led.print("Celc");
  
    led.setCursor(0, 0);
    led.print("Humidity: ");
    led.print(hum, 1);
    led.print("%");
  // © Copyright by Ararya Arka XII5
  }
}


void turnOff(const int green,const int red){
   oled.clearDisplay();
   oled.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, offColor);
   oled.display();
   led.clear();
   digitalWrite(green, LOW);
   digitalWrite(red, LOW);
}

void lampOn(const int green,const int red){

  if(temperature <= 15){
    digitalWrite(red, LOW);
    digitalWrite(green, HIGH);
  }
  if(temperature > 15){
    digitalWrite(green, LOW);
    digitalWrite(red, HIGH);
  }
  // © Copyright by Ararya Arka XII5
}

void loop() {
  temperature = dht.readTemperature();
  humidity = dht.readHumidity();
// © Copyright by Ararya Arka XII5
  buttonState = digitalRead(button);

  if (buttonState != lastButtonState) {
    if (buttonState == HIGH) {
      systemState = !systemState;
      if (systemState) {
        displayData(temperature, humidity, true); 
        displayData(temperature, humidity, false); 
        lampOn(led1, led2);
        Serial.println("System ON");
      } else {
        turnOff(led1, led2);
        Serial.println("System OFF");
      }
    }
    delay(50);
  }
  lastButtonState = buttonState;
}


// © Copyright by Ararya Arka XII5