#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

// Define Circular LED Ring
#define LED_1_PIN 2
#define LED_2_PIN 3
#define LED_3_PIN 4
#define LED_4_PIN 5
#define LED_5_PIN 6

#define LED_NUMBER 5

#define POTENTIOMETER_PIN A0

// Define LED Matrix

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW
#define MAX_DEVICES 4
#define CS_PIN 10
#define DATA_PIN 11
#define CLK_PIN 12

MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

void setup()
{
  pinMode(LED_1_PIN, OUTPUT);
  pinMode(LED_2_PIN, OUTPUT);
  pinMode(LED_3_PIN, OUTPUT);
  pinMode(LED_4_PIN, OUTPUT);
  pinMode(LED_5_PIN, OUTPUT);

  // Intialize LED Matrix:
  myDisplay.begin();
  // Set the intensity
  myDisplay.setIntensity(0);
  // Clear the display
  myDisplay.displayClear();

}

void loop()
{
  int potentiometerValue = analogRead(POTENTIOMETER_PIN);
  int ledChoice = potentiometerValue / (1024 / LED_NUMBER);
  
  if (ledChoice > LED_NUMBER - 1) {
    ledChoice = LED_NUMBER - 1;
  }
  myDisplay.setTextAlignment(PA_CENTER);
  myDisplay.print("1");
  delay(2000);
  myDisplay.setTextAlignment(PA_LEFT);
  myDisplay.print("2");
  delay(2000);
  myDisplay.setTextAlignment(PA_RIGHT);
  myDisplay.print("3");
  delay(2000);
  myDisplay.setTextAlignment(PA_CENTER);
  myDisplay.setInvert(true);
  myDisplay.print("4");
  delay(2000);
  myDisplay.setInvert(false);
  myDisplay.print(5);
  delay(2000);

  if (ledChoice == 0) {
    digitalWrite(LED_1_PIN, HIGH);
    digitalWrite(LED_2_PIN, LOW);
    digitalWrite(LED_3_PIN, LOW);
    digitalWrite(LED_4_PIN, LOW);
    digitalWrite(LED_5_PIN, LOW);
    
  }
  else if (ledChoice == 1) {
    digitalWrite(LED_1_PIN, LOW);
    digitalWrite(LED_2_PIN, HIGH);
    digitalWrite(LED_3_PIN, LOW);
    digitalWrite(LED_4_PIN, LOW);
    digitalWrite(LED_5_PIN, LOW); 
  }
  else if (ledChoice == 2) {
    digitalWrite(LED_1_PIN, LOW);
    digitalWrite(LED_2_PIN, LOW);
    digitalWrite(LED_3_PIN, HIGH);
    digitalWrite(LED_4_PIN, LOW);
    digitalWrite(LED_5_PIN, LOW); 
  }
  else if (ledChoice == 3) {
    digitalWrite(LED_1_PIN, LOW);
    digitalWrite(LED_2_PIN, LOW);
    digitalWrite(LED_3_PIN, LOW);
    digitalWrite(LED_4_PIN, HIGH);
    digitalWrite(LED_5_PIN, LOW); 
  }
  else {
    digitalWrite(LED_1_PIN, LOW);
    digitalWrite(LED_2_PIN, LOW);
    digitalWrite(LED_3_PIN, LOW);
    digitalWrite(LED_4_PIN, LOW);
    digitalWrite(LED_5_PIN, HIGH);

  }

}