#include <LiquidCrystal_I2C.h>
#include <LiquidMenu.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);


//ENCODER
#define outputA 25
#define outputB 26
#define sw 27

int aState;
int aLastState;  

//LEDS
#define ledPlaca 2
#define led1 0
#define led2 4
#define led3 16


int led_seleccionado = 0;

LiquidLine linea1(1, 0, "Led 1");
LiquidLine linea2(1, 1, "Led 2");
LiquidLine linea3(1, 0, "Led 3");
LiquidLine linea4(1, 1, "Todos");
LiquidScreen pantalla1(linea1,linea2,linea3,linea4);

LiquidLine linea1_2(1, 0, "ON");
LiquidLine linea2_2(1, 1, "OFF");
LiquidLine linea3_2(1, 0, "Atras");
LiquidScreen pantalla2(linea1_2,linea2_2,linea3_2);

LiquidMenu menu(lcd,pantalla1);//,pantalla2);

void setup() {
  // Pins de salida
  pinMode(ledPlaca,OUTPUT);
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT); 
  
  //pinMode(sw,INPUT_PULLUP);

// Inicializar el LCD
// lcd.init();
  
  lcd.begin();

//Encender la luz de fondo.
  lcd.backlight();
  
  menu.init();

  linea1.set_focusPosition(Position::LEFT); 
  linea2.set_focusPosition(Position::LEFT); 
  linea3.set_focusPosition(Position::LEFT); 
  linea4.set_focusPosition(Position::LEFT); 
   
  linea1.attach_function(1, fn_led1); 
  linea2.attach_function(1, fn_led2);
  linea3.attach_function(1, fn_led3);
  linea4.attach_function(1, fn_todos);
  
  menu.add_screen(pantalla1);
  
  linea1_2.set_focusPosition(Position::LEFT); 
  linea2_2.set_focusPosition(Position::LEFT); 
  linea3_2.set_focusPosition(Position::LEFT); 
  
  linea1_2.attach_function(1, fn_on); 
  linea2_2.attach_function(1, fn_off);
  linea3_2.attach_function(1, fn_atras);
   
  menu.add_screen(pantalla2);

  pantalla1.set_displayLineCount(2);
  pantalla2.set_displayLineCount(2);

  menu.set_focusedLine(0);

  menu.update();

  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Arrancando el ESP32..."); 
}


void loop(){ 
   digitalWrite(led1, HIGH);	// Enciende el LED
   delay(1000); 				// Pausa de 1 segundo 
   digitalWrite(led1, LOW); 	// Apaga el LED 
   delay(1000);				// Pausa de 1 segundo 

  selectOption();

  aState = digitalRead(outputA); 
    if (aState != aLastState){     
      if (digitalRead(outputB) != aState) { 
        menu.switch_focus(false);
      } else {
        menu.switch_focus(true);
      }
      menu.update();
      aLastState = aState;
  }

  if (Serial.available()) {
    // wait a bit for the entire message to arrive
    delay(100);
    // clear the screen
    lcd.clear();
    // read all the available characters
    while (Serial.available() > 0) {
      // display each character to the LCD
      lcd.write(Serial.read());
    }
  }
} 



//Funciones:::::
void selectOption(){
  if(digitalRead(sw) == LOW){
      menu.call_function(1);
      delay(500);
  }
}

void fn_led1(){
  menu.change_screen(2);
  menu.set_focusedLine(0);
  led_seleccionado = 1;
}

void fn_led2(){
  menu.change_screen(2);
  menu.set_focusedLine(0);
  led_seleccionado = 2;
}


void fn_led3(){
  menu.change_screen(2);
  menu.set_focusedLine(0);
  led_seleccionado = 3;
}


void fn_todos(){
  menu.change_screen(2);
  menu.set_focusedLine(0);
  led_seleccionado = 0;
}



void fn_on(){

  switch(led_seleccionado){
    case 1:
      digitalWrite(led1,HIGH);
      break;
    case 2:
      digitalWrite(led2,HIGH);
      break; 
    case 3:
      digitalWrite(led3,HIGH);
      break;
    case 0:
      digitalWrite(led1,HIGH);
      digitalWrite(led2,HIGH);
      digitalWrite(led3,HIGH);
      break;   
  }

}


void fn_off(){
  switch(led_seleccionado){
    case 1:
      digitalWrite(led1,LOW);
      break;
    case 2:
      digitalWrite(led2,LOW);
      break; 
    case 3:
      digitalWrite(led3,LOW);
      break;
    case 0:
      digitalWrite(led1,LOW);
      digitalWrite(led2,LOW);
      digitalWrite(led3,LOW);
      break;   
  }
}

void fn_atras(){
  menu.change_screen(1);
  menu.set_focusedLine(0);
}