#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <LiquidCrystal.h>
#include <RTClib.h>
#include <DHT.h>

#define DHTPIN 2    // Pin where the DHT22 is connected
#define DHTTYPE DHT22   // Type of DHT sensor
#define LEDRED 9
LiquidCrystal_I2C lcd(0x27, 20, 4); // Address for the LCD I2C module may vary
RTC_DS1307 rtc;
DHT dht(DHTPIN, DHTTYPE);

//custom text
byte degree[8] = {
  B00110,
  B01001,
  B01001,
  B00110,
  B00000,
  B00000,
  B00000,
  B00000
};

void setup() {
  lcd.init();                      // Initialize LCD
  lcd.backlight();                 // Turn on backlight
  pinMode(LEDRED, OUTPUT);
  Wire.begin();
  rtc.begin();
  dht.begin();
  lcd.createChar(0, degree);
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // Uncomment the following line if you need to set the time
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {
  DateTime now = rtc.now();   // Get current time
  
  // Print time in 12-hour format
  lcd.setCursor(0, 0);
  lcd.print("Time: ");
  lcd.print(now.hour() > 12 ? now.hour() - 12 : now.hour()); // Convert to 12-hour format
  lcd.print(':');
  if (now.minute() < 10) lcd.print('0'); // Add leading zero for single-digit minutes
  lcd.print(now.minute());
  lcd.print(':');
  if (now.second() < 10) lcd.print('0'); // Add leading zero for single-digit seconds
  lcd.print(now.second());
  lcd.print(' ');
  lcd.print(now.hour() >= 12 ? "GABI" : "UMAGA"); // Print AM or PM based on the hour
  
  // Read temperature from DHT22 sensor

  float temperature = dht.readTemperature(); 
  float humidity = dht.readHumidity(); 
  //Temperature
  lcd.setCursor(0, 2);
  lcd.print("Temperature: ");
  lcd.print(temperature); // Print temperature as whole number
  lcd.write(byte(0));
  lcd.print(" ");
  lcd.print("C"); // Celsius sign
  //Humidity
  lcd.setCursor(0, 3);
  lcd.print("Humidity: ");
  lcd.print(humidity); // Print temperature w/ decimal
  //lcd.print(int(humidity)); // Print temperature as whole number
  lcd.print(" ");
  lcd.print("%"); // percent sign
  // Print the day of the week in Tagalog
  lcd.setCursor(0, 1);
  switch (now.dayOfTheWeek()) {
    case 1:
      lcd.print("LUNES");
      break;
    case 2:
      lcd.print("MARTES");
      break;
    case 3:
      lcd.print("MIYERKULES");
      break;
    case 4:
      lcd.print("HUWEBES");
      break;
    case 5:
      lcd.print("BIYERNES");
      break;
    case 6:
      lcd.print("SABADO");
      break;
    case 7:
      lcd.print("LINGGO");
      break;
  }
  
if(temperature >= 41){
  digitalWrite(LEDRED, HIGH);  // turn the LED on (HIGH is the voltage level)
}
if(temperature <= 40.9){
  digitalWrite(LEDRED, LOW);  // turn the LED on (HIGH is the voltage level)
}
  // Print the date (month and day)
  lcd.print(' ');
  if (now.month() < 10) lcd.print('0'); // Add leading zero for single-digit months
  lcd.print(now.month());
  lcd.print('/');
  if (now.day() < 10) lcd.print('0'); // Add leading zero for single-digit days
  lcd.print(now.day());
  lcd.print('/');
  if (now.year() < 10) lcd.print('0'); // Add leading zero for single-digit days
  lcd.print(now.year());
  delay(1000);  // Delay for 1 second
}