#include <RTClib.h>
#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <OneWire.h>
#include <DallasTemperature.h>

char daysOfTheWeek[7][12] = {
  "Sunday",
  "Monday",
  "Tuesday",
  "Wednesday",
  "Thursday",
  "Friday",
  "Saturday"
};

#define DHT22_PIN 7
#define DHTTYPE DHT22
#define ONE_WIRE_BUS 2

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
LiquidCrystal_I2C lcd(0x27, 20, 4);
RTC_DS1307 rtc;


LiquidCrystal_I2C MyLCD(0x27, 20, 4); // Creates I2C LCD Object With (Address=0x27, Cols=16, Rows=2)
DHT DHT22_Sensor(DHT22_PIN, DHTTYPE);

byte Degree[] = {
  B00111,
  B00101,
  B00111,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000
};
void setup () {
  Serial.begin(9600);

  // SETUP RTC MODULE
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (1);
  }

  // automatically sets the RTC to the date & time on PC this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

  // manually sets the RTC with an explicit date & time, for example to set
  // January 21, 2021 at 3am you would call:
  // rtc.adjust(DateTime(2021, 1, 21, 3, 0, 0));

  MyLCD.init();
  MyLCD.backlight();
  MyLCD.setCursor(0, 0);
  DHT22_Sensor.begin();

  sensors.begin();
  // Start the LCD and turn on the backlight:
  lcd.init();
  lcd.backlight();
  // Create a custom character:
  lcd.createChar(0, Degree);
}

void loop () {
  DateTime now = rtc.now();
  Serial.print("Date & Time: ");
  Serial.print(now.year(), DEC);
  Serial.print('/');
  Serial.print(now.month(), DEC);
  Serial.print('/');
  Serial.print(now.day(), DEC);
  Serial.print(" (");
  Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
  Serial.print(") ");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.println(now.second(), DEC);

  float DHT22_Humidity = DHT22_Sensor.readHumidity();
  float DHT22_TempC = DHT22_Sensor.readTemperature(); // Read Temperature(°C)
  // Print Temperature Reading To The I2C LCD
  MyLCD.clear();
  MyLCD.print("Humidity: ");
  MyLCD.print((int)DHT22_Humidity);
  MyLCD.print("%");
  MyLCD.setCursor(0, 1);
  MyLCD.print("Temp: ");
  MyLCD.print((int)DHT22_TempC);
  MyLCD.print((char)223); // Show Degree Symbol (º)
  MyLCD.print("C");

  // Send the command for all devices on the bus to perform a temperature conversion:
  sensors.requestTemperatures();

  // Fetch the temperature in degrees Celsius for device index:
  float tempC = sensors.getTempCByIndex(0); // the index 0 refers to the first device

  // Print the temperature on the LCD;
  lcd.setCursor(0,2);
  lcd.print("Water Temp:");
  lcd.print(tempC);
  lcd.write(0); // print the custom character
  lcd.print("C");

  delay(1000);
}