// include the library code:
#include <LiquidCrystal.h>
int byteincome = 0;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

//Key message
int adc_key_val[5] ={30, 150, 360, 535, 760 };
String statuses[] = {"Coding", "Doing Homework", "Please Leave", "Away", "Sleeping", "Calling Home", "Gaming", "GET OUT"};
String top[] = {'Status:', 'Adam:', 'Oliver:', 'Adam & Oliver:', 'Awesomeness'. 'OBEY:'};
int NUM_KEYS = 5;
int adc_key_in;
int key=-1;
int oldkey=-1;
int mode = 0;
int blp = 10;
int i = 0;
int j = 0;
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
lcd.setCursor(0, 1);
intro();
Serial.begin(9600);
pinMode(10, OUTPUT);
digitalWrite(blp, HIGH);


}

void loop() {
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):


adc_key_in = analogRead(0); // read the value from the sensor

key = get_key(adc_key_in); // convert into key press
if (key != oldkey) // if keypress is detected
{
delay(50); // wait for debounce time
adc_key_in = analogRead(0); // read the value from the sensor
key = get_key(adc_key_in); // convert into key press
if (key != oldkey)
{
oldkey = key;

if (key==0)
{
  j++;
  if (j>5)
  {
    j = 0;
  }
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(top[j]);
  lcd.setCursor(0, 1);

  lcd.write(statuses[i]);

}
if (key==3)
{
  j--;
  if (j<0)
  {
    j = 5;
  }
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(top[j]);
  lcd.setCursor(0, 1);

  lcd.write(statuses[i]);

}
if (key == 1) //down key
{
  i--;
  if (i == -1)
  {
    i = 7;
  }
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(top[j]);
  lcd.setCursor(0, 1);
  lcd.print(statuses[i]);

}
if (key == 2) //up key
{
  i++;
  if (i>7)
  {
    i = 0;
  }
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print(top[j]);
  lcd.setCursor(0, 1);
  lcd.print(statuses[i]);

}
else if (key == 4)
{
  if (mode == 0)
  {
    mode = 1;
    lcd.noDisplay();
    digitalWrite(10, LOW);
  }
  else if (mode == 1)

  {
    mode = 2;
    lcd.display();
    digitalWrite(10, LOW);
  }

    else if (mode == 2)
  {
    mode = 0;
    lcd.display();
    digitalWrite(10, HIGH);
  }
}
}
}
}

// Convert ADC value to key number
int get_key(unsigned int input)
{ int k;
for (k = 0; k < NUM_KEYS; k++)
{
if (input < adc_key_val[k])
{ return k; }
}
if (k >= NUM_KEYS)
k = -1; // No valid key pressed
return k;


}
int intro()
{
 lcd.setCursor(0, 0);
 lcd.print("Select: Mode");
 lcd.setCursor(0, 1);
  lcd.print("Left/Right: Top");
  delay(1500);
  lcd.clear();
 lcd.setCursor(0, 0);
  lcd.print("Left/Right: Top");
 lcd.setCursor(0, 1);
  lcd.print("Up/Down: Scroll");
   delay(1500);
  lcd.clear();
 lcd.setCursor(0, 0);
  lcd.print("Up/Down: Scroll");
 lcd.setCursor(0, 1);
  lcd.print("Status:");
   delay(1500);
  lcd.clear();
 lcd.setCursor(0, 0);
  lcd.print("Status:");
 lcd.setCursor(0, 1);
  lcd.print("Coding");
  return 0;
}