/*
Copyright 2020 Brandon Sherwin
*/

// initialize the library with the numbers of the interface pins
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

#include <Servo.h>
Servo myservo;  // create servo object to control a servo

const int buttonPin = 6;     // the number of the pushbutton pin
const int ledPin =  13;      // the number of the LED pin

// variables will change:
int buttonState = 0;  // variable for reading the pushbutton status
int pos = 0;    // variable to store the servo position

void setup() {
  pinMode(ledPin, OUTPUT);  // initialize the LED pin as an output
  pinMode(buttonPin, INPUT);  // initialize the pushbutton pin as an input
  lcd.begin(16, 2);  // set up the LCD's number of columns and rows
  myservo.attach(12);  // attaches the servo on pin 9 to the servo object
}

void loop() {
  lcd.display();  // Turns LCD on
  buttonState = digitalRead(buttonPin);  // reads pushbutton state

  if (buttonState == HIGH) {  // check if the pushbutton is pressed
    lcd.clear();
    delay(10);
    lcd.setCursor(0, 0);  // Display position
    lcd.print("Vending.");
    delay(1000);
    pos = 180;
  myservo.write(pos);  {            // tell servo to go to position in variable 'pos'
  delay(15); }
    lcd.setCursor(0, 0);
    lcd.print("Vending..");
    delay(1000);
    lcd.setCursor(0, 0);
    lcd.print("Vending...");
    delay(1000);
    lcd.clear();
    delay(100);  // Use sensor to verify product was dispensed to display Enjoy
    lcd.print("Enjoy!");
    delay(1000);
    for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees
    myservo.write(pos);
    delay(20);     }            // tell servo to go to position in variable 'pos'
    lcd.clear();
    delay(100);
  } else {
    digitalWrite(9,HIGH);
    lcd.setCursor(0, 0);  // Display position
    lcd.print("Make a selection");
    lcd.setCursor(0, 1);  // Display position
    lcd.print("Credit:");
    lcd.setCursor(8, 1);  // Display position
    lcd.print("$2.00");  // Replace with system to take money
    digitalWrite(ledPin, LOW);
  }
}