#include <LiquidCrystal_I2C.h>
#include <stdio.h>
#include "relay.h"

const int lcdAddress = 0x27; 
LiquidCrystal_I2C lcd(lcdAddress, 16, 2);
const String turnOn = "ON";
const String turnOff = "OFF";

void setup() {
  Serial.begin(9600);
  lcd.init();
  lcd.backlight(); 
  redirectLCDOutput();
  printf(">> LED is OFF <<");
  RelayInit();
  RelayOff();
  redirectSerialOutput();
  printf("%s\n", "===== Commands =====");
  printf("%s\n", "ON - turn on the relay");
  printf("%s\n", "OFF - turn off the relay");
  printf("%s\n", "(Status): The relay is currently turned off");
}

void loop() {
  redirectLCDOutput();
  if (Serial.available() > 0) {
    String command = Serial.readStringUntil('\n');
    if (command == "ON" || command == "on") {
      RelayOn(); 
      printf(">> LED is ON <<");
    } else if (command == "OFF" || command == "off") {   
      RelayOff();
      printf(">> LED is OFF <<");
    }
  }
}