#include <Wire.h>
#include <hd44780.h>                       // main hd44780 header
#include <hd44780ioClass/hd44780_I2Cexp.h> // i2c expander i/o class header

hd44780_I2Cexp lcd; // declare lcd object: auto locate & auto config expander chip

// LCD geometry
const int LCD_COLS = 16;


const int buttonPin = 13; // the number of the button pin
const int switch1Pin = 11; // the number of the switch1 pin
const int switch2Pin = 12; // the number of the switch2 pin
const int motorPin =  6; // the number of the motor pin
const int LED = 8; // light up the blue led
int buttonState = 0;  // variable for reading the button's status
int switch1State = 0;  // variable for reading the switch1 status
int switch2State = 0;  // variable for reading the switch2 status
const int motorPin2 =  7; // the number of the motor pin
int i = 1; //Holds the value for the menu

void setup() {
   // put your setup code here, to run once:
  lcd.begin(16, 2);// set up the number of columns and rows on the LCD
  lcd.print("  LITTLE BEER");
  lcd.setCursor(0,1);
  lcd.print("   DISPENSER");
   // initialize the inputs and outputs
   // initialize the motor pin as an output:
  pinMode(motorPin, OUTPUT);
  pinMode(motorPin2, OUTPUT);
  // initialize the switch pin as an input:
  pinMode(buttonPin, INPUT);
  pinMode(LED, OUTPUT); 
  Serial.begin(6000);
  delay(5000); 
  }


void loop() {
  // read the state of the switch1 and switch2 value:
  switch1State = digitalRead(switch1Pin); 
  switch2State = digitalRead(switch2Pin); {
    if (switch1State == HIGH) { 
      // enter liquor 43 purge/clean mode:
      
      // read the state of the button value:
      buttonState = digitalRead(buttonPin); {
        if (buttonState == HIGH) {
          // turn motor on:
          lcd.clear();
          lcd.print("PURGING");
          lcd.setCursor(0,1);
          lcd.print("LIQUOR 43...");
          digitalWrite(motorPin, HIGH);
          digitalWrite(motorPin2, LOW);
          digitalWrite(LED, HIGH);
          delay(500);
        } 
        else {
          digitalWrite(motorPin, LOW);
          digitalWrite(motorPin2, LOW);
          lcd.clear();
          lcd.print("*LIQUOR43 PURGE*");
          lcd.setCursor(0,1);
          lcd.print("  PRESS BUTTON");
          digitalWrite(LED, HIGH);
          delay(100);
          digitalWrite(LED, LOW);
          delay(200);
        }
      }
    }
  
    else if (switch2State == HIGH) {
      // enter cream purge/clean mode:
      
      // read the state of the button value:
      buttonState = digitalRead(buttonPin); {
        if (buttonState == HIGH) {
          // turn motor on:
          lcd.clear();
          lcd.print("PURGING");
          lcd.setCursor(0,1);
          lcd.print("CREAM...");
          digitalWrite(motorPin, LOW);
          digitalWrite(motorPin2, HIGH);
          digitalWrite(LED, HIGH);
          delay(500);
        } 
        else {
          digitalWrite(motorPin, LOW);
          digitalWrite(motorPin2, LOW);
          lcd.clear();
          lcd.print(" *CREAM  PURGE*");
          lcd.setCursor(0,1);
          lcd.print("  PRESS BUTTON");
          digitalWrite(LED, HIGH);
          delay(100);
          digitalWrite(LED, LOW);
          delay(200);
        }
      }
    }

    else {
    // read the state of the button value:
    lcd.clear();
    lcd.print("PRESS BUTTON");
    lcd.setCursor(0,1);
    lcd.print("TO DISPENSE...");
    delay(500);
    buttonState = digitalRead(buttonPin); {
      if (buttonState == HIGH) {
       // turn motor on:
       lcd.clear();
       lcd.print("DISPENSING IN 3");
       delay(1000);
       lcd.clear();
       lcd.print("DISPENSING IN 2");
       delay(1000);
       lcd.clear();
       lcd.print("DISPENSING IN 1");
       delay(1000);
       lcd.clear();
       lcd.print("DISPENSING");
       lcd.setCursor(0,1);
       lcd.print("LIQUOR 43...");
       digitalWrite(motorPin, HIGH);
       digitalWrite(motorPin2, LOW);
       digitalWrite(LED, HIGH);
       delay(10000); // liquor 43 control amount
       lcd.clear();
       lcd.print("DISPENSING");
       lcd.setCursor(0,1);
       lcd.print("HEAVY CREAM...");
       digitalWrite(motorPin, LOW);
       digitalWrite(motorPin2, HIGH);
       digitalWrite(LED, HIGH);
       delay(4000); // heavy cream control amount
       digitalWrite(motorPin, LOW);
       digitalWrite(motorPin2, LOW);
       digitalWrite(LED, HIGH);
       lcd.clear();
       lcd.print("LITTLE BEERS!!!!!");
       delay(7000);
       lcd.clear();
       lcd.print("READY FOR MORE?");
       lcd.setCursor(0,1);
       lcd.print("PUSH THE BUTTON!");
      }
   
      else {
       // turn motor off:
       digitalWrite(motorPin, LOW);
       digitalWrite(motorPin2, LOW);
       digitalWrite(LED, HIGH);    
       }
     }
   }
 }
}