#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// C++ code
//

void displayTemp();
int setTemp(int num);
int setTime(int number);
int inputValue(int num);

const int input8 = 13;
const int input4 = 12;
const int input2 = 11;
const int input1 = 10;

int inputState8 = 0;
int inputState4 = 0;
int inputState2 = 0;
int inputState1 = 0;

int counter = 0;

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup()
{
  lcd.begin(16,2);
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  
  pinMode(input8,INPUT);
  pinMode(input4,INPUT);
  pinMode(input2,INPUT);
  pinMode(input1,INPUT);
}

void loop()
{
  inputState8 = digitalRead(input8);
  inputState4 = digitalRead(input4);
  inputState2 = digitalRead(input2);
  inputState1 = digitalRead(input1);

  int num;
  int time = 0;
    
       if(inputState8==LOW && inputState4==LOW && inputState2==LOW && inputState1==HIGH)
  {num = 0;}
  else if(inputState8==LOW && inputState4==LOW && inputState2==HIGH && inputState1==LOW)
  {num = 1;}
  else if(inputState8==LOW && inputState4==LOW && inputState2==HIGH && inputState1==HIGH)
  {num = 2;}
  else if(inputState8==LOW && inputState4==HIGH && inputState2==LOW && inputState1==LOW)
  {num = 3;}
  else if(inputState8==LOW && inputState4==HIGH && inputState2==LOW && inputState1==HIGH)
  {num = 4;}
  else if(inputState8==LOW && inputState4==HIGH && inputState2==HIGH && inputState1==LOW)
  {num = 5;}
  else if(inputState8==LOW && inputState4==HIGH && inputState2==HIGH && inputState1==HIGH)
  {num = 6;}
  else if(inputState8==HIGH && inputState4==LOW && inputState2==LOW && inputState1==LOW)
  {num = 7;}
  else if(inputState8==HIGH && inputState4==LOW && inputState2==LOW && inputState1==HIGH)
  {num = 8;}
  else if(inputState8==HIGH && inputState4==LOW && inputState2==HIGH && inputState1==LOW)
  {num = 9;}
  else if(inputState8==HIGH && inputState4==LOW && inputState2==HIGH && inputState1==HIGH)
  {num = 10;}//decimal
  else if(inputState8==HIGH && inputState4==HIGH && inputState2==LOW && inputState1==LOW)
  {num = 11;}//mode
  
  if(num==11)
  {counter=counter + 1;}
  
  if(counter==1)
  {displayTemp();
   delay(300);}
  
  if(counter==2)
  {setTemp(num);
   delay(300);}
  
  if(counter==3)
  {setTime(num);
   delay(300);}
  
  if(counter>3)
  {counter = 0;}
  
  Serial.print(counter);
  Serial.println();
  
  
}

void displayTemp()
 {lcd.clear();
  lcd.noCursor();
  lcd.setCursor(0,0);
  lcd.print("Temp:");
  lcd.setCursor(0,1);
  lcd.print("Humid:");
  delay(300);}
  
int setTemp(int num)
 {lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Set Temp");
  lcd.cursor();
  delay(5000);
  lcd.setCursor(0,1);
  int arr1;
  int arr2;
  int arr3;
  int arr4;
  int res;
  
  lcd.print("-");
  arr1=num;
  lcd.print(arr1);
  delay(5000);

  lcd.print("-");
  arr2=num;
  lcd.print(arr2);
  delay(5000);

  lcd.print("-");
  arr3=num;
  lcd.print(arr3);
  delay(5000);

  lcd.print("-");
  arr4=num;
  lcd.print(arr4);
  delay(5000);
  res = (arr1*1000 + arr2*100 + arr3*10 + arr4)/100.0;

  char resStr[7];
  dtostrf(res,5,2,resStr);

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Set Temp");
  lcd.setCursor(0,1);
  lcd.print(resStr);
  delay(3000);
}


int setTime(int number)
{
 lcd.clear();
 lcd.setCursor(0,0);
 lcd.print("Set Time: ");
 delay(300); 
  int num = 0;
  
//  if(num==1)
//  {lcd.setCursor(1,1);
//   lcd.print("Hour(s): ");
//   lcd.print(1);
//   number = 1;}
//  
  int ar[3];
  lcd.setCursor(0,1);
  for(int i = 0 ; i < 4 ; i++)
  {
    ar[i]=num;
    lcd.print(ar[i]);
    if (i==1){
      lcd.print(":");
    }
  }
 }