// setting up all my constants / variables. Naming, Pin assignment, etc.
int s1Status = LOW;
const int s1statusPin = 9;
const int coolantButtonPin = 7;
const int coolantLedPin = 13;
int coolantButtonState = 0; 
int powerButtonState = 0;
int coolantVal = 0;
int coolantPin = A5;
#include <LiquidCrystal.h>
#include <LiquidCrystal_I2C.h> // Library for LCD
LiquidCrystal_I2C lcd2(0x27, 16, 2); // I2C address 0x27, 16 column and 2 rows

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET     4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

//servo stuff
#include <Servo.h>

Servo myservo;  // create servo object to control a servo
// twelve servo objects can be created on most boards

int pos = 0;    // variable to store the servo position


void setup() {
  
  lcd2.init(); //initialize the lcd
  myservo.attach(14);  // attaches the servo on pin 9 to the servo object


  //recognizing the pins as either outputs / inputs
  pinMode(coolantLedPin, OUTPUT);
  pinMode(coolantButtonPin, INPUT);
  pinMode(s1statusPin, INPUT);
  Serial.begin(9600);
  Serial.println("hello");

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  

  

// nice Greeting For the User
  lcd.begin(16, 2);
  lcd.print("Hello!");
  delay(1000);
  lcd.clear();
  lcd.print("Please fill");
  lcd.setCursor(0, 1);
  lcd.print("Coolant Before");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Turning on");
  lcd.setCursor(0,1);
  lcd.print("Sensor.");
  delay(1000);
  lcd.clear();
}

void loop() {

  Serial.print(s1Status);
  Serial.println(digitalRead(s1statusPin));
  
  delay(100);

  // reads the state of each button:
  s1Status = digitalRead(s1statusPin);
  coolantButtonState = digitalRead(coolantButtonPin);


  // checks if the coolant button is pressed. If it is, the buttonState is HIGH (which means on):
  if (coolantButtonState == HIGH) { //this setup allows the user to simulate with or without a cup of water next to them lol.

    lcd.setCursor(0, 1);
    lcd.print("Coolant Cycling."); 
    lcd2.setCursor(0,0);
    lcd2.print("Chiller On");
  
    
  } else {
    // turn LED off:
    lcd.setCursor(0, 1);
    lcd.print("No Coolant Flow.");
    lcd2.clear();
    delay(100);
  }
 
  if (s1Status == HIGH and coolantButtonState == HIGH) {
    pos = random(0,179);
    myservo.write(pos); 
    delay(1000);                    
    }
   

  }