#include <LiquidCrystal.h>
#include <LiquidMenu.h>
#include "RTClib.h"

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
RTC_DS1307 rtc;


//ENCODER
const int leftButtonPin = 14;
const int rightButtonPin = 15;
const int enterButtonPin = 16;
#define PIN_TRIG 4
#define PIN_ECHO 3

String petOptions[] = {"Dog", "Cat", "Hamster", "Bird"};
int weightOptions[] = {1, 2, 5, 10, 15, 20};
int feedTimesOptions[] = {1, 2, 3, 4, 5, 6};
int counter1 = 0;
int counter2 = 0;
int counter3 = 0;
String Mylabel ="";
long int LastMeal=0;
int Dif=10;
int _min;
int _seg;
int dist;
int n=0;

char daysOfTheWeek[7][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};

int Day; 
int Month;
int Year; 
int Secs;
int Minutes;
int Hours;

String dofweek; // day of week

String myDate; 
String myTime; 



//lineas pantalla 0
LiquidLine linea1_pant0(1, 0, "Real time");
LiquidLine linea2_pant0(1, 1, "Food Now");
LiquidLine linea3_pant0(1, 0, "Last meal");
LiquidLine linea4_pant0(1, 1, "Box Load");
LiquidLine linea5_pant0(1, 0, "Setup");


//lineas pantalla 5
LiquidLine linea1_pant5(1, 0, "Pet");
LiquidLine linea2_pant5(1, 1, "Weight");
LiquidLine linea3_pant5(1, 0, "Times a day");
LiquidLine linea4_pant5(1, 1, "< Back");



//declaracion de pantallas
LiquidScreen pantalla0;
LiquidScreen pantalla1;
LiquidScreen pantalla2;
LiquidScreen pantalla3;
LiquidScreen pantalla4;
LiquidScreen pantalla5;

LiquidMenu menu(lcd);


void setup() {

  pinMode(leftButtonPin,INPUT_PULLUP);
  pinMode(rightButtonPin,INPUT_PULLUP);
  pinMode(enterButtonPin, INPUT_PULLUP);
  
  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);

  lcd.begin(16, 2);
  lcd.clear();
  lcd.print("   Welcome to   ");
  lcd.setCursor(0, 1);
  lcd.print(" Your Pet Feader ");
  delay(3000);
  lcd.clear();
  lcd.print("  START SETUP   ");
  lcd.setCursor(0, 1);
  lcd.print("Press Enter to->");
  
  

//añadir lineas a pantalla 0
  pantalla0.add_line(linea1_pant0);
  pantalla0.add_line(linea2_pant0);
  pantalla0.add_line(linea3_pant0);
  pantalla0.add_line(linea4_pant0);
  pantalla0.add_line(linea5_pant0);



//añadir lineas a pantalla 5
  pantalla5.add_line(linea1_pant5);
  pantalla5.add_line(linea2_pant5);
  pantalla5.add_line(linea3_pant5);
  pantalla5.add_line(linea4_pant5);
  

  
  //definir posicion del selector lineas de patalla 0
  linea1_pant0.set_focusPosition(Position::LEFT); 
  linea2_pant0.set_focusPosition(Position::LEFT); 
  linea3_pant0.set_focusPosition(Position::LEFT); 
  linea4_pant0.set_focusPosition(Position::LEFT); 
  linea5_pant0.set_focusPosition(Position::LEFT); 

  

  //definir posicion del selector lineas de patalla 5
  linea1_pant5.set_focusPosition(Position::LEFT); 
  linea2_pant5.set_focusPosition(Position::LEFT); 
  linea3_pant5.set_focusPosition(Position::LEFT); 
  linea4_pant5.set_focusPosition(Position::LEFT); 
   


 
  linea1_pant0.attach_function(1, fn_time); 
  linea2_pant0.attach_function(1, fn_fnow); 
  linea3_pant0.attach_function(1, fn_last); 
  linea4_pant0.attach_function(1, fn_dist); 
  linea5_pant0.attach_function(1, fn_ir_a_pantalla5); 

  

  linea1_pant5.attach_function(1, fn_pet); 
  linea2_pant5.attach_function(1, fn_W); 
  linea3_pant5.attach_function(1, fn_tad); 
  linea4_pant5.attach_function(1, fn_back); 
  


  menu.add_screen(pantalla0);
  menu.add_screen(pantalla1);
  menu.add_screen(pantalla2);
  menu.add_screen(pantalla3);
  menu.add_screen(pantalla4);
  menu.add_screen(pantalla5);
  
  pantalla0.set_displayLineCount(2);
  pantalla1.set_displayLineCount(2);
  pantalla2.set_displayLineCount(2);
  pantalla3.set_displayLineCount(2);
  pantalla4.set_displayLineCount(2);
  pantalla5.set_displayLineCount(2);
  
  delay(100);
  while (digitalRead(enterButtonPin)==HIGH){
    
  }
  
  fn_ir_a_pantalla5();
  

  menu.init();
  menu.set_focusedLine(0);
  menu.update();
}

void loop() {

  selectOption();
 
  if (digitalRead(rightButtonPin)==LOW){
    menu.switch_focus(true);
    
  }
  if (digitalRead(leftButtonPin)==LOW){
    menu.switch_focus(false);
  }
  delay(200);
  if (millis()==8640000){ n=0;  }
  
}
 


//Funciones:::::
void selectOption(){
  if(digitalRead(enterButtonPin) == LOW){
      delay(150);
      menu.call_function(1);
      
  }
}
void fn_ir_a_pantalla5(){
  delay(200);
  menu.change_screen(6);
  menu.set_focusedLine(0);
}


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


void fn_fnow(){
  LastMeal=0;
  delay(200);
  lcd.clear();
  lcd.setCursor(0,0);
  
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Meal Serving");
  lcd.setCursor(0,1);
  lcd.print("...");
  fn_serve();
  lcd.clear();
  lcd.print("Meal Served");
  LastMeal=millis();
  //delay(3000);
  
}


void fn_last(){
  delay(300);
  lcd.clear();
  while (digitalRead(enterButtonPin)==HIGH){
    Dif=(millis()-LastMeal)/1000;
    _min=Dif/60;
    _seg=Dif%60;
    lcd.setCursor(0,0);
    lcd.print("Have passed");
    lcd.setCursor(0,1);
    lcd.print(String(_min)+"min  "+String(_seg)+"seg ");
    delay(300);
    _min=0;
    _seg=0;
  }
}

void fn_time(){
  
  rtc.begin();
  while ((digitalRead(enterButtonPin) ==HIGH)){
    DateTime now = rtc.now();
    lcd.clear();        
    Day = now.day(); 
    Month = now.month(); 
    Year = now.year();
    Secs = now.second(); 
    Hours = now.hour(); 
    Minutes = now.minute(); 
    dofweek = daysOfTheWeek[now.dayOfTheWeek()];  

    myDate = myDate +dofweek+ "   "+ Day + "/" + Month + "/" + Year ; 
    myTime = myTime + Hours +":"+ Minutes +":" + Secs ; 
    
    //Print on lcd
    lcd.setCursor(0,0);
    lcd.print(myDate); 
    lcd.setCursor(0,1); 
    lcd.print("Time:");
    lcd.setCursor(6,1);
    lcd.print(myTime); 
    myDate = "";   
    myTime = ""; 
    delay(1000);
  }
  fn_back();
}

void fn_dist(){
  
  lcd.clear();
    
  while(digitalRead(enterButtonPin)==HIGH){
    
    digitalWrite(PIN_TRIG, HIGH);
    delayMicroseconds(10);
    digitalWrite(PIN_TRIG, LOW);

    dist = pulseIn(PIN_ECHO, HIGH);
    dist=dist* 0.034 / 2;

    int per=0;
    if (dist>36){per=0;}
    if (dist>26 && dist<=36){per=25;}
    if (dist>16 && dist<=26){per=50;}
    if (dist>6 && dist<=16){per=75;}
    if (dist<6){per=100;}
    lcd.setCursor(0,0);
    lcd.print("LEFT"); 
    lcd.setCursor(0,1); 
    lcd.print(String(per)+"% ");
    
    delay(200);
    
  }
} 

void fn_pet(){

  lcd.clear();

  while ((digitalRead(enterButtonPin)==HIGH)){
    
    Mylabel="";  
    if(digitalRead(rightButtonPin)==LOW){
      if(counter1==3){
        counter1=0;
      }else{
        counter1++;
      }
    }
    if(digitalRead(leftButtonPin)==LOW){
      if(counter1==0){
        counter1=3;
      }else{
        counter1--;
      }
    }
    lcd.setCursor(0,0);
    lcd.print("PETS");
    Mylabel="<"+String(petOptions[counter1])+">    ";
    lcd.setCursor(0,1);
    lcd.print(Mylabel);
    Mylabel="";
    delay(200);
  }
  
}

void fn_W(){
  
  lcd.clear();

  while ((digitalRead(enterButtonPin)==HIGH)){
    
    Mylabel="";
    if(digitalRead(rightButtonPin)==LOW){
      if(counter2==5){
        counter2=0;
      }else{
        counter2++;
      }
    }
    if(digitalRead(leftButtonPin)==LOW){
      if(counter2==0){
        counter2=5;
      }else{
        counter2--;
      }
    }
    lcd.setCursor(0,0);
    lcd.print("WEIGHT");
    Mylabel="<"+String(weightOptions[counter2])+"  Kg>        ";
    lcd.setCursor(0,1);
    lcd.print(Mylabel);
    Mylabel="";
    delay(200);
  } 
}

void fn_tad(){
  
  lcd.clear();
  
  while ((digitalRead(enterButtonPin)==HIGH)){

    Mylabel="";
    if(digitalRead(rightButtonPin)==LOW){
      if(counter3==5){
        counter3=0;
      }else{
        counter3++;
      }
    }
    if(digitalRead(leftButtonPin)==LOW){
      if(counter3==0){
        counter3=5;
      }else{
        counter3--;
      }
    }
    lcd.setCursor(0,0);
    lcd.print("TIMES A DAY");
    Mylabel="<"+String(feedTimesOptions[counter3])+" /per day>        ";
    lcd.setCursor(0,1);
    lcd.print(Mylabel);
    Mylabel="";
    delay(200);
    
  }
  n=0;
}

void fn_serve(){
  int duration;
  int quant;
  if (counter1==2 || counter1==3){ quant=10 ; }
  if (counter1==0){  quant=21*counter2 - 11,25 ; }
  if (counter1==1){ quant=55 ; }
  duration=quant/counter3;
  if (n<feedTimesOptions[counter3] && Dif>=10){
    n++;
    //atuar motor
    delay(3000);
  }else{
    while ((digitalRead(enterButtonPin)==HIGH)){
      lcd.clear();
      delay(500);
      lcd.setCursor(0,1);
      lcd.print(" >Meal Denied< ");
      delay(500);
    }
    fn_back();
  }
  
}